Alert archive / Colorado / Winter Storm Warnings in 2024
Winter Storm Warning 2, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at Jan 11, 2024, 11:59 AM MST for 9 counties in Colorado. It took effect at Jan 11, 2024, 11:00 PM MST. It was in force for 4 days. 60 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 11, 2024, 11:59 AM MST (18:59 UTC)
- In effect from
- Jan 11, 2024, 11:00 PM MST
- Expired
- Jan 15, 2024, 5:00 PM MST
- In force
- 4 days
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 102 km from the middle of the area, began a volume at 19:03 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 12, 8:43 PM MST | SNOW 1 | 2 Se Breckenridge, CO | |
| Jan 12, 8:43 PM MST | SNOW 1 | 2 Se Breckenridge, CO | |
| Jan 12, 11:14 PM MST | SNOW 1 | Poudre Park, CO | |
| Jan 12, 11:14 PM MST | SNOW 1 | Poudre Park, CO | |
| Jan 13, 3:42 AM MST | SNOW 2.3 | 1 Nnw Louisville, CO | |
| Jan 13, 3:42 AM MST | SNOW 2.3 | 1 Nnw Louisville, CO | |
| Jan 13, 3:42 AM MST | SNOW 2.3 | 1 Nnw Louisville, CO | |
| Jan 13, 5:03 AM MST | SNOW 3.5 | 3 Nw Boulder, CO | |
| Jan 13, 5:03 AM MST | SNOW 3.5 | 3 Nw Boulder, CO | |
| Jan 13, 5:40 AM MST | SNOW 2 | 3 W Fort Collins, CO | Cocorahs station CO-LR-1009 Fort Collins 2.8 W. |
| Jan 13, 6:00 AM MST | SNOW 1 | 3 Ssw Evergreen, CO | Cocorahs station CO-JF-565 Evergreen 2.5 SSW. |
| Jan 13, 6:00 AM MST | SNOW 1.2 | 4 Wsw Arvada, CO | Cocorahs station CO-JF-504 Arvada 3.6 WSW. |
| Jan 13, 6:00 AM MST | SNOW 2.4 | 1 Nnw Loveland, CO | Cocorahs station CO-LR-40 Loveland 1.5 N. |
| Jan 13, 6:00 AM MST | SNOW 2.4 | 1 Nnw Loveland, CO | CO-OP Observer station LVDC2 1.3 NW Loveland. |
| Jan 13, 6:00 AM MST | SNOW 2.4 | 4 Ene Nederland, CO | Cocorahs station CO-BO-296 Nederland 3.7 ENE. |
| Jan 13, 6:00 AM MST | SNOW 3.5 | 3 Sse Silver Plume, CO | CO-OP Observer station GCRC2 Georgetown 4 S. |
| Jan 13, 6:30 AM MST | SNOW 3 | 1 Wnw Crescent Village, CO | CO-OP Observer station GRRC2 1.2 W Crescent Village. |
| Jan 13, 6:44 AM MST | SNOW 2.5 | 4 Ne Nederland, CO | |
| Jan 13, 6:44 AM MST | SNOW 2.5 | 4 Ne Nederland, CO | |
| Jan 13, 7:00 AM MST | SNOW 0.5 | 2 Sw Lakewood, CO | Cocorahs station CO-JF-333 Lakewood 1.7 SW. |
| Jan 13, 7:00 AM MST | SNOW 0.5 | 4 W Pinewood Springs, CO | Cocorahs station CO-LR-1307 Lyons 8.9 WNW. |
| Jan 13, 7:00 AM MST | SNOW 0.6 | 2 Ese Lakewood, CO | Cocorahs station CO-JF-179 Lakewood 2.2 ESE. |
| Jan 13, 7:00 AM MST | SNOW 0.6 | 2 Sse Estes Park, CO | Cocorahs station CO-LR-987 Estes Park 1.8 SSE. |
| Jan 13, 7:00 AM MST | SNOW 0.7 | 2 Wnw Chatfield Reservo, CO | Cocorahs station CO-JF-526 1 SW Columbine. |
| Jan 13, 7:00 AM MST | SNOW 0.8 | 6 Nnw Silverthorne, CO | Cocorahs station CO-SU-8 Silverthorne 7.4 NW. |
| Jan 13, 7:00 AM MST | SNOW 0.9 | 2 N Ken Caryl, CO | Cocorahs station CO-JF-212 Littleton 6.4 W. |
| Jan 13, 7:00 AM MST | SNOW 0.9 | 3 Nne Ken Caryl, CO | Cocorahs station CO-JF-376 Littleton 6.0 W. |
| Jan 13, 7:00 AM MST | SNOW 0.9 | 3 Nw Columbine, CO | Cocorahs station CO-JF-414 Littleton 4.7 W. |
| Jan 13, 7:00 AM MST | SNOW 0.9 | 4 Nne Ken Caryl, CO | Cocorahs station CO-JF-518 Ken Caryl 3.5 N. |
| Jan 13, 7:00 AM MST | SNOW 1 | 1 Sw Columbine, CO | Cocorahs station CO-JF-61 Chatfield Dam 2 NW. |
| Jan 13, 7:00 AM MST | SNOW 1 | 2 N Lyons, CO | Cocorahs station CO-BO-137 Lyons 1.8 N. |
| Jan 13, 7:00 AM MST | SNOW 1 | 2 Ssw Brookvale, CO | Cocorahs station CO-CC-1 Evergreen 6.5 WSW. |
| Jan 13, 7:00 AM MST | SNOW 1 | 2 Wsw Lakewood, CO | Cocorahs station CO-JF-340 Lakewood 1.5 WSW. |
| Jan 13, 7:00 AM MST | SNOW 1 | 3 Nne Aspen Park, CO | Cocorahs station CO-JF-157 Evergreen 4.2 SSE. |
| Jan 13, 7:00 AM MST | SNOW 1 | 3 Nne Pleasant View, CO | Cocorahs station CO-JF-290 Wheat Ridge 2.8 WSW. |
| Jan 13, 7:00 AM MST | SNOW 1 | 7 Se Cherokee Park, CO | Cocorahs station CO-LR-672 Virginia Dale 7.2 SSW. |
| Jan 13, 7:00 AM MST | SNOW 1 | Columbine, CO | Cocorahs station CO-JF-1 Denver 11.0 SSW. |
| Jan 13, 7:00 AM MST | SNOW 1.1 | 1 Ssw Fort Collins, CO | Cocorahs station CO-LR-769 Fort Collins 0.7 SSW. |
| Jan 13, 7:00 AM MST | SNOW 1.1 | 2 Nne Loveland, CO | Cocorahs station CO-LR-104 Loveland 3.0 NNE. |
| Jan 13, 7:00 AM MST | SNOW 1.1 | 2 Nw Longmont, CO | Cocorahs station CO-BO-84 Longmont 2.6 NW. |
| Jan 13, 7:00 AM MST | SNOW 1.1 | 2 Wnw Timnath, CO | Cocorahs station CO-LR-1244 Fort Collins 2.4 ESE. |
| Jan 13, 7:00 AM MST | SNOW 1.1 | 3 E Longmont, CO | Cocorahs station CO-BO-581 Longmont 2.8 E. |
| Jan 13, 7:00 AM MST | SNOW 1.2 | 1 Nne Edgewater, CO | Cocorahs station CO-JF-585 Wheat Ridge 2.5 ESE. |
| Jan 13, 7:00 AM MST | SNOW 1.2 | 1 Wsw Wheat Ridge, CO | Cocorahs station CO-JF-428 Wheat Ridge 1.4 WSW. |
| Jan 13, 7:00 AM MST | SNOW 1.2 | 1 W Wheat Ridge, CO | CO-OP Observer station WGEC2 1.0 W Wheat Ridge. |
| Jan 13, 7:00 AM MST | SNOW 1.2 | 1 W Wheat Ridge, CO | |
| Jan 13, 7:00 AM MST | SNOW 1.2 | 1 W Wheat Ridge, CO | |
| Jan 13, 7:00 AM MST | SNOW 1.2 | 2 Ssw Berthoud, CO | Cocorahs station CO-LR-1222 Berthoud 2.0 SSW. |
| Jan 13, 7:00 AM MST | SNOW 1.2 | 2 Wnw Estes Park, CO | Cocorahs station CO-LR-1133 Estes Park 1.7 WNW. |
| Jan 13, 7:00 AM MST | SNOW 1.2 | Lyons, CO | Cocorahs station CO-BO-146 Lyons 0.3 NNE. |
| Jan 13, 7:00 AM MST | SNOW 1.3 | 1 Wsw Wheat Ridge, CO | Cocorahs station CO-JF-343 Wheat Ridge 0.9 WSW. |
| Jan 13, 7:00 AM MST | SNOW 1.3 | 2 E Longmont, CO | Cocorahs station CO-BO-361 Longmont 1.8 E. |
| Jan 13, 7:00 AM MST | SNOW 1.3 | 2 W Owl Canyon, CO | Cocorahs station CO-LR-567 La Porte 10.0 NNW. |
| Jan 13, 7:00 AM MST | SNOW 1.3 | 4 S Cherokee Park, CO | Cocorahs station CO-LR-329 Red Feather 5.9 NE. |
| Jan 13, 7:00 AM MST | SNOW 1.3 | 4 Wsw Drake, CO | Cocorahs station CO-LR-1026 Drake 4.3 WSW. |
| Jan 13, 7:00 AM MST | SNOW 1.3 | Longmont, CO | Cocorahs station CO-BO-531 Longmont 0.4 SW. |
| Jan 13, 7:00 AM MST | SNOW 1.4 | 2 Nnw Marshall, CO | Cocorahs station CO-BO-481 Boulder 3.6 SSE. |
| Jan 13, 7:00 AM MST | SNOW 1.4 | 2 S Fort Collins, CO | Cocorahs station CO-LR-1247 Fort Collins 2.3 S. |
| Jan 13, 7:00 AM MST | SNOW 1.4 | 3 Ene Aspen Park, CO | Cocorahs station CO-JF-407 Aspen Park 2.8 NNE. |
| Jan 13, 7:00 AM MST | SNOW 1.4 | 4 W Arvada, CO | Cocorahs station CO-JF-240 Arvada 3.8 W. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Grand Junction, CO (KGJT), launched 12:00Z, 7.0 hours before the alert went out and 254 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 871 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
313 WWUS45 KBOU 111859 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1159 AM MST Thu Jan 11 2024 COZ031-033-034-120600- /O.CAN.KBOU.WW.Y.0003.000000T0000Z-240112T0000Z/ /O.UPG.KBOU.WS.A.0002.240112T0600Z-240114T0000Z/ /O.NEW.KBOU.WS.W.0002.240112T0600Z-240114T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Berthoud Pass, Cameron Pass, Rabbit Ears Range, Eisenhower Tunnel, Williams Fork Mountains, Laramie and Medicine Bow Mountains, Breckenridge, East Slopes Southern Gore Range, Willow Creek Pass, Rocky Mountain National Park, Indian Peaks, Mount Blue Sky, Kenosha Mountains, East Slopes Mosquito Range, Winter Park, and Mt Zirkel 1159 AM MST Thu Jan 11 2024 ...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 PM MST SATURDAY... ...WINTER WEATHER ADVISORY IS CANCELLED... * WHAT...Heavy snow expected. Total snow accumulations between 6 and 14 inches, with up to 24 inches in the Park Range. Winds gusting in the 50 to 70 mph range over the higher elevations and east slopes. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Heavy snow will develop late tonight in the Park Range and early Friday elsewhere, and continue through Saturday. Additional snowfall is expected through Monday. * IMPACTS...Travel will become difficult to impossible at times due to heavy snowfall and strong winds. Blowing snow could significantly reduce visibility. Travel restrictions are likely, and road closures are possible over the mountain passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Consider delaying travel over the mountains, or traveling today or early Friday before the worst conditions. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ038>051-120600- /O.CON.KBOU.WC.A.0001.240114T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Forder, Highlands Ranch, Kutch, Julesburg, Merino, Roggen, Stoneham, Brush, Amherst, Nunn, Bennett, Elbert, Larkspur, Sterling, Cope, Pawnee Buttes, Fort Lupton, Grover, Hugo, Fort Collins, Holyoke, Parker, Karval, Lakewood, Akron, Brighton, Greeley, Limon, Hereford, Leader, Fondis, Otis, Eaton, Peetz, Arvada, Ovid, Sedgwick, Matheson, Aurora, Briggsdale, Wiggins, Punkin Center, Kiowa, Raymer, Crook, Byers, Longmont, Agate, Denver International Airport, Fort Morgan, Boulder, Golden, Last Chance, Littleton, Haxtun, Goodrich, Castle Rock, Deer Trail, Loveland, and City of Denver 1159 AM MST Thu Jan 11 2024 ...WIND CHILL WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH TUESDAY MORNING... * WHAT...Dangerously cold wind chills possible. Wind chills of 20 below to 30 below zero, with the most severe conditions over the eastern plains. * WHERE...East central and northeast Colorado. * WHEN...From Saturday afternoon through Tuesday morning. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. Take precautions now to provide for outdoor animals. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Gimmestad
14 follow-up statements
420 WWUS45 KBOU 112008 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 108 PM MST Thu Jan 11 2024 COZ031-033-034-121300- /O.CON.KBOU.WS.W.0002.240112T0600Z-240114T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Williams Fork Mountains, Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Kenosha Mountains, Laramie and Medicine Bow Mountains, Rocky Mountain National Park, East Slopes Mosquito Range, Cameron Pass, Mt Zirkel, Breckenridge, Willow Creek Pass, Mount Blue Sky, Berthoud Pass, Winter Park, and Rabbit Ears Range 108 PM MST Thu Jan 11 2024 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 5 PM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations between 6 and 14 inches, with up to 24 inches in the Park Range. Winds gusting in the 50 to 70 mph range over the higher elevations and east slopes. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Heavy snow will develop late tonight in the Park Range and early Friday elsewhere, and continue through Saturday. Additional snowfall is expected through Monday. * IMPACTS...Travel will become difficult to impossible at times due to heavy snowfall and strong winds. Blowing snow could significantly reduce visibility. Travel restrictions are likely, and road closures are possible over the mountain passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Consider delaying travel over the mountains, or traveling today or early Friday before the worst conditions. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ042>045-048>051-121300- /O.EXT.KBOU.WC.A.0001.240113T0700Z-240116T1800Z/ Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- Including the cities of Brush, Eaton, Greeley, Briggsdale, Haxtun, Otis, Grover, Fort Lupton, Leader, Stoneham, Wiggins, Sedgwick, Roggen, Akron, Julesburg, Peetz, Amherst, Goodrich, Bennett, Deer Trail, Pawnee Buttes, Raymer, Last Chance, Merino, Holyoke, Ovid, Cope, Crook, Sterling, Fort Morgan, and Byers 108 PM MST Thu Jan 11 2024 ...WIND CHILL WATCH NOW IN EFFECT FROM LATE FRIDAY NIGHT THROUGH TUESDAY MORNING... * WHAT...Dangerously cold wind chills possible. Wind chills as low as 30 below zero. * WHERE...A portion of northeast Colorado. * WHEN...From late Friday night through Tuesday morning. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ038>041-046-047-121300- /O.CON.KBOU.WC.A.0001.240114T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County- Including the cities of Arvada, Littleton, Boulder, Matheson, Brighton, Loveland, Kutch, Agate, Denver International Airport, Parker, Limon, Nunn, Hereford, Hugo, Fondis, Castle Rock, Fort Collins, Kiowa, Punkin Center, Longmont, Larkspur, Aurora, City of Denver, Karval, Elbert, Lakewood, Highlands Ranch, Golden, and Forder 108 PM MST Thu Jan 11 2024 ...WIND CHILL WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH TUESDAY MORNING... * WHAT...Dangerously cold wind chills possible. Wind chills as low as 30 below zero. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...From Saturday afternoon through Tuesday morning. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Danielson
033 WWUS45 KBOU 120910 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 210 AM MST Fri Jan 12 2024 ...ARCTIC BLAST AND HEAVY MOUNTAIN SNOW... .Snow will increase in the mountains this afternoon and evening. The snow will combine with strong winds gusts of 50 to 75 mph above timberline to produce widespread blowing and drifting snow, poor visibility, and dangerous travel conditions. While the snow may taper off Saturday, another round of even heavier snow is expected develop Saturday night and continue through Sunday. On the plains, arctic cold will settle across the area tonight, with dangerously cold wind chill readings expected to last all the way through Tuesday morning. This will be an extended cold snap, resulting in a heightened risk of frostbite and hypothermia for people with prolonged outdoor exposure, and an increased burden on outdoor animals. COZ038>041-046-047-122300- /O.UPG.KBOU.WC.A.0001.240114T0000Z-240116T1800Z/ /O.NEW.KBOU.WC.W.0001.240113T0700Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County- Including the cities of Matheson, Nunn, City of Denver, Agate, Longmont, Parker, Karval, Limon, Larkspur, Fort Collins, Forder, Littleton, Brighton, Hugo, Hereford, Lakewood, Kiowa, Loveland, Boulder, Kutch, Arvada, Elbert, Aurora, Punkin Center, Fondis, Castle Rock, Highlands Ranch, Denver International Airport, and Golden 210 AM MST Fri Jan 12 2024 ...WIND CHILL WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills expected. Wind chills of 20 below to 30 below zero, with the most severe conditions east of I-25. * WHERE...East central and northeast Colorado. * WHEN...From midnight tonight to 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear several layers of appropriate clothing, a hat, and gloves. Take precautions now to provide shelter for outdoor animals. && $$ COZ042>045-048>051-122300- /O.UPG.KBOU.WC.A.0001.240113T0700Z-240116T1800Z/ /O.NEW.KBOU.WC.W.0001.240113T0700Z-240116T1800Z/ Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- Including the cities of Grover, Julesburg, Crook, Leader, Wiggins, Byers, Sterling, Brush, Eaton, Briggsdale, Pawnee Buttes, Ovid, Goodrich, Otis, Akron, Deer Trail, Stoneham, Raymer, Haxtun, Roggen, Fort Morgan, Cope, Bennett, Fort Lupton, Merino, Peetz, Holyoke, Amherst, Greeley, Sedgwick, and Last Chance 210 AM MST Fri Jan 12 2024 ...WIND CHILL WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills expected. Wind chills as low as 35 below zero. * WHERE...East central and northeast Colorado. * WHEN...From midnight tonight to 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear several layers of appropriate clothing, a hat, and gloves. Take precautions now to provide shelter for outdoor animals. && $$ COZ031-033-034-122300- /O.CON.KBOU.WS.W.0002.000000T0000Z-240114T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, East Slopes Mosquito Range, Mt Zirkel, Rabbit Ears Range, Laramie and Medicine Bow Mountains, Breckenridge, Kenosha Mountains, Rocky Mountain National Park, Mount Blue Sky, Williams Fork Mountains, Berthoud Pass, Cameron Pass, Winter Park, Willow Creek Pass, East Slopes Southern Gore Range, and Eisenhower Tunnel 210 AM MST Fri Jan 12 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow and blowing snow. Total snow accumulations between 6 and 12 inches, with up to 18 inches in the Park Range. Winds gusting in the 50 to 75 mph range over the higher elevations and east slopes. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel will become difficult to impossible at times due to heavy snowfall and strong winds. Blowing snow could significantly reduce visibility. Travel restrictions are likely, and road closures are possible over the mountain passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Consider delaying travel over the mountains, or traveling early today before the worst conditions. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Barjenbruch
210 WWUS45 KBOU 122020 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 120 PM MST Fri Jan 12 2024 COZ031-033-034-130830- /O.EXT.KBOU.WS.W.0002.000000T0000Z-240115T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of East Slopes Southern Gore Range, Rabbit Ears Range, Berthoud Pass, Cameron Pass, Indian Peaks, Willow Creek Pass, Laramie and Medicine Bow Mountains, East Slopes Mosquito Range, Mount Blue Sky, Breckenridge, Eisenhower Tunnel, Kenosha Mountains, Winter Park, Rocky Mountain National Park, Williams Fork Mountains, and Mt Zirkel 120 PM MST Fri Jan 12 2024 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 5 PM MST SUNDAY... * WHAT...Heavy snow is expected tonight, with light to moderate snowfall in addition to strong winds on Saturday. Heavier snow then develops Saturday night and continues into Sunday afternoon. Storm totals of 1 to 2 feet are expected, with around 30 inches possible around Rabbit Ears Pass. Winds gusting as high as 75 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST Sunday. * IMPACTS...Travel may become very difficult to impossible due to heavy snowfall on roadways. Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. Damage to trees and power lines is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ038>051-130830- /O.CON.KBOU.WC.W.0001.240113T0700Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Merino, Bennett, Castle Rock, Briggsdale, Highlands Ranch, Denver International Airport, Roggen, Akron, Fondis, Loveland, Agate, Limon, Fort Morgan, Karval, Hereford, Larkspur, Longmont, Greeley, Eaton, Cope, Otis, Matheson, Lakewood, Fort Collins, Peetz, Aurora, Deer Trail, Forder, Arvada, Parker, Grover, Sterling, Haxtun, Holyoke, Goodrich, City of Denver, Golden, Kutch, Last Chance, Pawnee Buttes, Wiggins, Crook, Nunn, Punkin Center, Julesburg, Brighton, Boulder, Elbert, Raymer, Sedgwick, Brush, Byers, Littleton, Fort Lupton, Stoneham, Ovid, Hugo, Amherst, Kiowa, and Leader 120 PM MST Fri Jan 12 2024 ...WIND CHILL WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills expected. Wind chills as low as 40 below zero. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...From midnight tonight to 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Cooper
477 WWUS45 KBOU 130025 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 525 PM MST Fri Jan 12 2024 COZ031-033-034-131300- /O.CON.KBOU.WS.W.0002.000000T0000Z-240115T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of East Slopes Mosquito Range, Laramie and Medicine Bow Mountains, Eisenhower Tunnel, Cameron Pass, East Slopes Southern Gore Range, Willow Creek Pass, Williams Fork Mountains, Breckenridge, Mt Zirkel, Berthoud Pass, Indian Peaks, Kenosha Mountains, Rabbit Ears Range, Rocky Mountain National Park, Winter Park, and Mount Blue Sky 525 PM MST Fri Jan 12 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... * WHAT...Heavy snow is expected tonight, with light to moderate snowfall in addition to strong winds on Saturday. Heavier snow then develops Saturday night and continues into Sunday afternoon. Storm totals of 1 to 2 feet are expected, with around 30 inches possible around Rabbit Ears Pass. Winds gusting as high as 75 mph. Additional snow is expected on Monday. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST Sunday. * IMPACTS...Travel may become very difficult to impossible due to heavy snowfall on roadways. Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. Damage to trees and power lines is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ038>051-131300- /O.CON.KBOU.WC.W.0001.240113T0700Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Pawnee Buttes, Roggen, Fort Morgan, Fort Lupton, Castle Rock, Briggsdale, Highlands Ranch, Grover, Loveland, Last Chance, Hugo, Nunn, Peetz, Stoneham, Deer Trail, Julesburg, Merino, Kiowa, Aurora, Punkin Center, Haxtun, Fondis, Byers, Amherst, Bennett, Arvada, City of Denver, Eaton, Akron, Sedgwick, Golden, Otis, Parker, Lakewood, Raymer, Leader, Sterling, Wiggins, Brighton, Agate, Larkspur, Limon, Longmont, Boulder, Fort Collins, Hereford, Brush, Kutch, Holyoke, Littleton, Denver International Airport, Forder, Crook, Ovid, Greeley, Goodrich, Cope, Matheson, Elbert, and Karval 525 PM MST Fri Jan 12 2024 ...WIND CHILL WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills expected. Wind chills as low as 40 below zero. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...From midnight tonight to 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ030-032-131300- /O.NEW.KBOU.WW.Y.0004.240113T0025Z-240115T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Grand Lake, North Park, Fraser, Hot Sulphur Springs, Granby, Kremmling, Rand, Gould, Spicer, Dillon, and Walden 525 PM MST Fri Jan 12 2024 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST SUNDAY... * WHAT...Snow is expected tonight, heavy at times, with mostly light snow on Saturday with strong winds. Heavier snow will redevelop Saturday night and continue into Sunday afternoon. Storm totals 5 to 10 inches are expected through Sunday, with local amounts to 12 inches possible near Gould, Grand Lake, and in the Fraser River Valley. Additional snow is expected on Monday. * WHERE...North Park, and Grand and Summit Counties Below 9000 Feet. * WHEN...Until 5 PM MST Sunday. * IMPACTS...Travel could be very difficult at times. Blowing snow Friday night into Saturday could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. Chain and traction laws, as well as road closures, will possibly be enacted for the mountains. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Rodriguez
164 WWUS45 KBOU 131036 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 336 AM MST Sat Jan 13 2024 COZ031-033-034-140000- /O.CON.KBOU.WS.W.0002.000000T0000Z-240115T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Winter Park, Mt Zirkel, Breckenridge, Eisenhower Tunnel, Rabbit Ears Range, Indian Peaks, Mount Blue Sky, East Slopes Southern Gore Range, Kenosha Mountains, Cameron Pass, Willow Creek Pass, Rocky Mountain National Park, East Slopes Mosquito Range, Williams Fork Mountains, Laramie and Medicine Bow Mountains, and Berthoud Pass 336 AM MST Sat Jan 13 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... * WHAT...Heavy snow. Additional snow accumulations between 2 and 21 inches. Winds gusting as high as 70 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST Sunday. * IMPACTS...Travel may become very difficult due to heavy snowfall on roadways. Widespread blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ038>051-140000- /O.CON.KBOU.WC.W.0001.000000T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Akron, Pawnee Buttes, Raymer, Last Chance, Fondis, Arvada, Merino, City of Denver, Denver International Airport, Fort Collins, Brighton, Punkin Center, Amherst, Fort Lupton, Briggsdale, Haxtun, Karval, Hereford, Eaton, Forder, Wiggins, Sedgwick, Bennett, Castle Rock, Parker, Roggen, Aurora, Peetz, Kutch, Elbert, Byers, Highlands Ranch, Julesburg, Fort Morgan, Agate, Grover, Hugo, Golden, Deer Trail, Limon, Boulder, Matheson, Cope, Crook, Longmont, Stoneham, Lakewood, Brush, Greeley, Leader, Sterling, Larkspur, Ovid, Nunn, Loveland, Otis, Holyoke, Kiowa, Littleton, and Goodrich 336 AM MST Sat Jan 13 2024 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 40 below zero. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ030-032-140000- /O.CON.KBOU.WW.Y.0004.000000T0000Z-240115T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Walden, Fraser, Dillon, North Park, Rand, Gould, Kremmling, Spicer, Granby, Grand Lake, and Hot Sulphur Springs 336 AM MST Sat Jan 13 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... * WHAT...Mostly light snow this afternoon with strong winds. Heavy snow will redevelop tonight and continue into Sunday afternoon. Storm totals 5 to 10 inches are expected through Sunday, with local amounts to 12 inches possible near Gould, Grand Lake, and in the Fraser River Valley. Additional snow is expected on Monday. * WHERE...North Park, and Grand and Summit Counties Below 9000 Feet. * WHEN...Until 5 PM MST Sunday. * IMPACTS...Travel could be very difficult at times. Blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. Chain and traction laws will possibly be enacted for the mountains. If traveling to the mountains, be prepared for winter driving conditions. && $$ For more information from the National Weather Service, visit https://weather.gov/bou AD
198 WWUS45 KBOU 131403 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 703 AM MST Sat Jan 13 2024 COZ031-033-034-140015- /O.CON.KBOU.WS.W.0002.000000T0000Z-240115T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Willow Creek Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, East Slopes Southern Gore Range, Mount Blue Sky, Mt Zirkel, Berthoud Pass, Williams Fork Mountains, Cameron Pass, Winter Park, Indian Peaks, East Slopes Mosquito Range, Breckenridge, Rocky Mountain National Park, Kenosha Mountains, and Eisenhower Tunnel 703 AM MST Sat Jan 13 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... * WHAT...Snow and blowing snow today, with heavier snow developing tonight and Sunday. Additional snow accumulations 12 to 24 inches, highest around Rabbit Ears Pass. Winds gusting as high as 70 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST Sunday. * IMPACTS...Travel may become very difficult to impossible due to heavy snowfall on roadways. Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ038>051-140015- /O.CON.KBOU.WC.W.0001.000000T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Parker, Cope, Haxtun, Fondis, Holyoke, Larkspur, Longmont, Amherst, Golden, Brighton, Fort Lupton, Crook, Ovid, Otis, Hereford, Agate, Boulder, Elbert, Greeley, Akron, Last Chance, Loveland, Pawnee Buttes, Karval, Deer Trail, Fort Collins, Hugo, Peetz, Julesburg, Sterling, Bennett, Castle Rock, Briggsdale, Arvada, Goodrich, Kiowa, Brush, City of Denver, Kutch, Raymer, Matheson, Leader, Wiggins, Limon, Aurora, Lakewood, Sedgwick, Nunn, Stoneham, Forder, Merino, Roggen, Fort Morgan, Punkin Center, Littleton, Byers, Eaton, Grover, Highlands Ranch, and Denver International Airport 703 AM MST Sat Jan 13 2024 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 40 below zero. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ030-032-140015- /O.CON.KBOU.WW.Y.0004.000000T0000Z-240115T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Rand, Gould, Spicer, Walden, Fraser, Grand Lake, North Park, Hot Sulphur Springs, Kremmling, Dillon, and Granby 703 AM MST Sat Jan 13 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... * WHAT...Mostly light snow this afternoon with strong winds. Heavy snow will redevelop tonight and continue into Sunday afternoon. Storm totals 5 to 10 inches are expected through Sunday, with local amounts to 12 inches possible near Gould, Grand Lake, and in the Fraser River Valley. Additional snow is expected on Monday. * WHERE...North Park, and Grand and Summit Counties Below 9000 Feet. * WHEN...Until 5 PM MST Sunday. * IMPACTS...Travel could be very difficult at times. Blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. Chain and traction laws, as well as road closures, will possibly be enacted for the mountains. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Cooper
257 WWUS45 KBOU 132127 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 227 PM MST Sat Jan 13 2024 COZ031-033-034-140700- /O.CON.KBOU.WS.W.0002.000000T0000Z-240115T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Willow Creek Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, East Slopes Southern Gore Range, Mount Blue Sky, Mt Zirkel, Berthoud Pass, Williams Fork Mountains, Cameron Pass, Winter Park, Indian Peaks, East Slopes Mosquito Range, Breckenridge, Rocky Mountain National Park, Kenosha Mountains, and Eisenhower Tunnel 227 PM MST Sat Jan 13 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... * WHAT...Snow will increase across the region by late this evening, becoming heavy at times late tonight and Sunday. Additional snow accumulations between 12 and 24 inches. Winds gusting as high as 65 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST Sunday. * IMPACTS...Travel may become very difficult due to heavy snowfall on roadways. Blowing snow could significantly reduce visibility over the higher mountain passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Persons should consider delaying travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ038>051-140700- /O.CON.KBOU.WC.W.0001.000000T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglast Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County-t Including the cities of Parker, Cope, Haxtun, Fondis, Holyoke, Larkspur, Longmont, Amherst, Golden, Brighton, Fort Lupton, Crook, Ovid, Otis, Hereford, Agate, Boulder, Elbert, Greeley, Akron, Last Chance, Loveland, Pawnee Buttes, Karval, Deer Trail, Fort Collins, Hugo, Peetz, Julesburg, Sterling, Bennett, Castle Rock, Briggsdale, Arvada, Goodrich, Kiowa, Brush, City of Denver, Kutch, Raymer, Matheson, Leader, Wiggins, Limon, Aurora, Lakewood, Sedgwick, Nunn, Stoneham, Forder, Merino, Roggen, Fort Morgan, Punkin Center, Littleton, Byers, Eaton, Grover, Highlands Ranch, and Denver International Airport 227 PM MST Sat Jan 13 2024 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY...T * WHAT...Dangerously cold wind chills. Wind chills as low as 40 below zero. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ030-032-140700- /O.CON.KBOU.WW.Y.0004.000000T0000Z-240115T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Rand, Gould, Spicer, Walden, Fraser, Grand Lake, North Park, Hot Sulphur Springs, Kremmling, Dillon, and Granby 227 PM MST Sat Jan 13 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... * WHAT...Snow increasing later this evening, then continuing through Sunday. Additional snow accumulations between 4 and 10 inches. Winds gusting as high as 45 mph. * WHERE...North Park, and Grand and Summit Counties Below 9000 Feet. * WHEN...Until 5 PM MST Sunday. * IMPACTS...Travel could be very difficult, be prepared for snowpacked and slick roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Chain and traction laws will possibly be enacted for the mountains. If traveling to the mountains, be prepared for winter driving conditions. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Cooper
019 WWUS45 KBOU 140903 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 203 AM MST Sun Jan 14 2024 COZ031-033-034-150000- /O.EXT.KBOU.WS.W.0002.000000T0000Z-240116T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Winter Park, Williams Fork Mountains, Mount Blue Sky, Rocky Mountain National Park, Mt Zirkel, East Slopes Southern Gore Range, Cameron Pass, East Slopes Mosquito Range, Laramie and Medicine Bow Mountains, Indian Peaks, Willow Creek Pass, Eisenhower Tunnel, Kenosha Mountains, Rabbit Ears Range, Berthoud Pass, and Breckenridge 203 AM MST Sun Jan 14 2024 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 5 PM MST MONDAY... * WHAT...Heavy snow. Additional snow accumulations between 4 and 26 inches. Winds gusting as high as 60 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST Monday. * IMPACTS...Travel may become very difficult to impossible due to heavy snowfall on roadways. Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ038>051-150000- /O.CON.KBOU.WC.W.0001.000000T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Aurora, Leader, Merino, Hugo, Julesburg, Loveland, Nunn, Denver International Airport, Kiowa, Fondis, Wiggins, Agate, Highlands Ranch, Deer Trail, Last Chance, Amherst, Fort Morgan, City of Denver, Byers, Limon, Greeley, Pawnee Buttes, Sedgwick, Arvada, Otis, Longmont, Kutch, Elbert, Forder, Fort Lupton, Akron, Fort Collins, Holyoke, Ovid, Haxtun, Sterling, Punkin Center, Hereford, Castle Rock, Eaton, Goodrich, Golden, Crook, Cope, Parker, Larkspur, Briggsdale, Brush, Littleton, Stoneham, Raymer, Lakewood, Matheson, Grover, Peetz, Boulder, Karval, Bennett, Brighton, and Roggen 203 AM MST Sun Jan 14 2024 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 35 below zero. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ030-032-150000- /O.EXT.KBOU.WW.Y.0004.000000T0000Z-240116T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Hot Sulphur Springs, Gould, Grand Lake, Walden, Kremmling, North Park, Fraser, Rand, Spicer, Granby, and Dillon 203 AM MST Sun Jan 14 2024 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 PM MST MONDAY... * WHAT...Snow. Additional snow accumulations between 5 and 16 inches. Winds gusting as high as 40 mph. * WHERE...North Park, and Grand and Summit Counties Below 9000 Feet. * WHEN...Until 5 PM MST Monday. * IMPACTS...Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. Chain and traction laws will possibly be enacted for the mountains. If traveling to the mountains, be prepared for winter driving conditions. && $$ For more information from the National Weather Service, visit https://weather.gov/bou AD
302 WWUS45 KBOU 141654 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 954 AM MST Sun Jan 14 2024 COZ031-033-034-150115- /O.CON.KBOU.WS.W.0002.000000T0000Z-240116T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Cameron Pass, Rocky Mountain National Park, Willow Creek Pass, Kenosha Mountains, Laramie and Medicine Bow Mountains, Eisenhower Tunnel, Mount Blue Sky, Williams Fork Mountains, Mt Zirkel, Rabbit Ears Range, East Slopes Mosquito Range, Berthoud Pass, Indian Peaks, East Slopes Southern Gore Range, Winter Park, and Breckenridge 954 AM MST Sun Jan 14 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST MONDAY... * WHAT...Snow, heavy at times. Additional snow accumulations between 10 and 20 inches. Winds gusting as high as 60 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST Monday. * IMPACTS...Travel will be very difficult due to heavy snowfall on roadways. Widespread blowing snow could significantly reduce visibility. The hazardous conditions will likely impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Moderate to heavy snow will continue over the mountains through early this afternoon, then decrease in intensity late this afternoon and evening. Another period of moderate to heavy snow will return later tonight and continue through Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Persons should consider delaying travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ038>051-150115- /O.CON.KBOU.WC.W.0001.000000T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Roggen, Hugo, Highlands Ranch, Aurora, Castle Rock, Sedgwick, Brighton, Byers, Kiowa, Kutch, Forder, Leader, Hereford, Eaton, Goodrich, Sterling, Arvada, Littleton, Briggsdale, Holyoke, City of Denver, Denver International Airport, Stoneham, Last Chance, Punkin Center, Karval, Lakewood, Wiggins, Deer Trail, Golden, Ovid, Boulder, Fondis, Fort Lupton, Merino, Peetz, Parker, Bennett, Nunn, Matheson, Pawnee Buttes, Julesburg, Fort Collins, Elbert, Amherst, Haxtun, Brush, Crook, Larkspur, Loveland, Fort Morgan, Cope, Raymer, Otis, Agate, Limon, Longmont, Greeley, Grover, and Akron 954 AM MST Sun Jan 14 2024 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 35 below zero. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ030-032-150115- /O.CON.KBOU.WW.Y.0004.000000T0000Z-240116T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Granby, Rand, Grand Lake, Kremmling, Fraser, Hot Sulphur Springs, Gould, Spicer, North Park, Walden, and Dillon 954 AM MST Sun Jan 14 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST MONDAY... * WHAT...Snow. Additional snow accumulations between 2 and 10 inches. Winds gusting as high as 40 mph. * WHERE...North Park, and Grand and Summit Counties Below 9000 Feet. * WHEN...Until 5 PM MST Monday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. Chain and traction laws will possibly be enacted for the mountains. If traveling to the mountains, be prepared for winter driving conditions. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Cooper
663 WWUS45 KBOU 142153 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 253 PM MST Sun Jan 14 2024 COZ031-033-034-150700- /O.CON.KBOU.WS.W.0002.000000T0000Z-240116T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Cameron Pass, Rocky Mountain National Park, Willow Creek Pass, Kenosha Mountains, Laramie and Medicine Bow Mountains, Eisenhower Tunnel, Mount Blue Sky, Williams Fork Mountains, Mt Zirkel, Rabbit Ears Range, East Slopes Mosquito Range, Berthoud Pass, Indian Peaks, East Slopes Southern Gore Range, Winter Park, and Breckenridge 253 PM MST Sun Jan 14 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST MONDAY... * WHAT...Snow, heavy at times. Additional snow accumulations between 8 and 16 inches. Winds gusting as high as 60 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST Monday. * IMPACTS...Travel may become very difficult due to heavy snowfall on roadways. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Another period of moderate to heavy snow will return later tonight and continue through Monday. Blowing snow can be expected, especially over exposed mountain passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Persons should consider delaying travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ038>051-150700- /O.CON.KBOU.WC.W.0001.000000T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Roggen, Hugo, Highlands Ranch, Aurora, Castle Rock, Sedgwick, Brighton, Byers, Kiowa, Kutch, Forder, Leader, Hereford, Eaton, Goodrich, Sterling, Arvada, Littleton, Briggsdale, Holyoke, City of Denver, Denver International Airport, Stoneham, Last Chance, Punkin Center, Karval, Lakewood, Wiggins, Deer Trail, Golden, Ovid, Boulder, Fondis, Fort Lupton, Merino, Peetz, Parker, Bennett, Nunn, Matheson, Pawnee Buttes, Julesburg, Fort Collins, Elbert, Amherst, Haxtun, Brush, Crook, Larkspur, Loveland, Fort Morgan, Cope, Raymer, Otis, Agate, Limon, Longmont, Greeley, Grover, and Akron 253 PM MST Sun Jan 14 2024 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 35 below zero. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ030-032-150700- /O.CON.KBOU.WW.Y.0004.000000T0000Z-240116T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Granby, Rand, Grand Lake, Kremmling, Fraser, Hot Sulphur Springs, Gould, Spicer, North Park, Walden, and Dillon 253 PM MST Sun Jan 14 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST MONDAY... * WHAT...Snow and areas of blowing snow. Additional snow accumulations between 3 and 8 inches. Winds gusting as high as 40 mph. * WHERE...North Park, and Grand and Summit Counties Below 9000 Feet. * WHEN...Until 5 PM MST Monday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. Chain and traction laws will possibly be enacted for the mountains. If traveling to the mountains, be prepared for winter driving conditions. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Cooper
096 WWUS45 KBOU 150353 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 853 PM MST Sun Jan 14 2024 ...SNOW INCREASING AGAIN IN THE MOUNTAINS... ...DANGEROUSLY COLD ON THE PLAINS THROUGH TUESDAY MORNING... .After a break this afternoon, snow will be heavy at times again tonight in the northern Colorado mountains. Winds will also increase again, causing additional blowing and drifting snow in open areas and maintaining the avalanche hazard in steep terrain. The snow will continue into Monday, then diminish as the day goes on. Light snow will spread across eastern Colorado Monday morning. Dangerously cold temperatures and wind chills will also continue. The coldest temperatures will be Monday night into Tuesday morning. COZ031-033-034-151315- /O.CON.KBOU.WS.W.0002.000000T0000Z-240116T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Williams Fork Mountains, East Slopes Mosquito Range, Berthoud Pass, Eisenhower Tunnel, Cameron Pass, Rabbit Ears Range, Breckenridge, Laramie and Medicine Bow Mountains, East Slopes Southern Gore Range, Indian Peaks, Kenosha Mountains, Mount Blue Sky, Winter Park, Mt Zirkel, and Willow Creek Pass 853 PM MST Sun Jan 14 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST MONDAY... * WHAT...Heavy snow. Additional snow accumulations between 5 and 10 inches. Winds gusting as high as 60 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST Monday. * IMPACTS...Travel may become very difficult to impossible due to heavy snowfall and widespread blowing snow. Road closures are likely. Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Consider delaying travel across the mountains if possible. Check the latest road conditions and closures by calling 5 1 1 or by going to www.cotrip.org. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ COZ038>051-151315- /O.CON.KBOU.WC.W.0001.000000T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Grover, Peetz, Ovid, Julesburg, Denver International Airport, Castle Rock, Akron, Brighton, City of Denver, Karval, Elbert, Forder, Hereford, Crook, Limon, Deer Trail, Punkin Center, Lakewood, Kiowa, Otis, Boulder, Amherst, Golden, Fort Morgan, Holyoke, Aurora, Hugo, Eaton, Sterling, Cope, Haxtun, Longmont, Arvada, Bennett, Littleton, Sedgwick, Last Chance, Kutch, Raymer, Roggen, Wiggins, Loveland, Parker, Larkspur, Nunn, Goodrich, Greeley, Highlands Ranch, Brush, Byers, Fort Lupton, Leader, Agate, Matheson, Stoneham, Fort Collins, Merino, Briggsdale, Fondis, and Pawnee Buttes 853 PM MST Sun Jan 14 2024 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 35 below zero. * WHERE...East central and northeast Colorado. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ030-032-151315- /O.CON.KBOU.WW.Y.0004.000000T0000Z-240116T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Spicer, Gould, Grand Lake, Granby, Hot Sulphur Springs, Dillon, North Park, Fraser, Kremmling, Rand, and Walden 853 PM MST Sun Jan 14 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST MONDAY... * WHAT...Snow. Additional snow accumulations between 3 and 6 inches. Winds gusting as high as 40 mph. * WHERE...North Park, and Grand and Summit Counties Below 9000 Feet. * WHEN...Until 5 PM MST Monday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Gimmestad
332 WWUS45 KBOU 151024 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 324 AM MST Mon Jan 15 2024 COZ031-033-034-160000- /O.CON.KBOU.WS.W.0002.000000T0000Z-240116T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Laramie and Medicine Bow Mountains, Rocky Mountain National Park, Cameron Pass, Williams Fork Mountains, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Mt Zirkel, Breckenridge, Kenosha Mountains, Mount Blue Sky, Rabbit Ears Range, Willow Creek Pass, Berthoud Pass, Winter Park, and East Slopes Mosquito Range 324 AM MST Mon Jan 15 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations between 1 and 8 inches. Winds gusting as high as 60 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel may become very difficult due to heavy snowfall on roadways. Road closures are likely. Widespread blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ COZ038>051-160000- /O.CON.KBOU.WC.W.0001.000000T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Peetz, Hereford, Leader, Crook, Roggen, Highlands Ranch, Bennett, Elbert, Matheson, Holyoke, Longmont, Aurora, Deer Trail, Boulder, Goodrich, Wiggins, Limon, Fondis, Hugo, Grover, Parker, Fort Morgan, Larkspur, Littleton, Forder, Sterling, Briggsdale, Lakewood, Julesburg, Haxtun, Golden, Byers, Kutch, Ovid, Sedgwick, Castle Rock, Fort Lupton, Punkin Center, Akron, Eaton, Raymer, Greeley, Amherst, Brighton, Denver International Airport, Loveland, Merino, Otis, Last Chance, Kiowa, Stoneham, Nunn, Arvada, Fort Collins, Pawnee Buttes, Brush, Agate, Cope, City of Denver, and Karval 324 AM MST Mon Jan 15 2024 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 35 below zero. * WHERE...East central and northeast Colorado. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ030-032-160000- /O.CON.KBOU.WW.Y.0004.000000T0000Z-240116T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Spicer, Walden, Granby, Hot Sulphur Springs, North Park, Grand Lake, Rand, Dillon, Fraser, Kremmling, and Gould 324 AM MST Mon Jan 15 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations between 1 and 3 inches. Winds gusting as high as 40 mph. * WHERE...North Park, and Grand and Summit Counties Below 9000 Feet. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. && $$ For more information from the National Weather Service, visit https://weather.gov/bou AD
397 WWUS45 KBOU 151940 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1240 PM MST Mon Jan 15 2024 COZ031-033-034-160000- /O.CON.KBOU.WS.W.0002.000000T0000Z-240116T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Williams Fork Mountains, Mt Zirkel, Cameron Pass, East Slopes Southern Gore Range, Kenosha Mountains, Laramie and Medicine Bow Mountains, Mount Blue Sky, Rabbit Ears Range, Berthoud Pass, East Slopes Mosquito Range, Willow Creek Pass, Rocky Mountain National Park, Indian Peaks, Winter Park, Breckenridge, and Eisenhower Tunnel 1240 PM MST Mon Jan 15 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations of 2-5 inches. Winds gusting as high as 70 mph. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel may become very difficult to impossible due to heavy snowfall on roadways. Road closures and impassable roads are likely. Plan on slippery road conditions. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ COZ038>051-160000- /O.CON.KBOU.WC.W.0001.000000T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Ovid, Longmont, Briggsdale, Leader, Agate, Crook, Stoneham, Karval, Sedgwick, Eaton, Hugo, Goodrich, Cope, Brighton, Larkspur, Kutch, Castle Rock, Fort Lupton, Boulder, Amherst, Fort Collins, Hereford, Roggen, Raymer, Parker, Nunn, Bennett, Greeley, Arvada, Golden, Kiowa, Brush, Denver International Airport, Loveland, Forder, Pawnee Buttes, Lakewood, City of Denver, Littleton, Merino, Last Chance, Julesburg, Peetz, Limon, Punkin Center, Akron, Wiggins, Sterling, Elbert, Holyoke, Byers, Aurora, Deer Trail, Otis, Fondis, Haxtun, Highlands Ranch, Fort Morgan, Matheson, and Grover 1240 PM MST Mon Jan 15 2024 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 35 below zero. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ030-032-160000- /O.CON.KBOU.WW.Y.0004.000000T0000Z-240116T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Fraser, Dillon, Grand Lake, Granby, Gould, North Park, Spicer, Kremmling, Hot Sulphur Springs, Rand, and Walden 1240 PM MST Mon Jan 15 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to 2 inches. * WHERE...North Park, and Grand and Summit Counties Below 9000 Feet. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. && $$ For more information from the National Weather Service, visit https://weather.gov/bou RJK
057 WWUS45 KBOU 152346 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 446 PM MST Mon Jan 15 2024 COZ031-033-034-160100- /O.EXP.KBOU.WS.W.0002.000000T0000Z-240116T0000Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Mt Zirkel, Berthoud Pass, Indian Peaks, Winter Park, Williams Fork Mountains, Rabbit Ears Range, Willow Creek Pass, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Kenosha Mountains, Breckenridge, Cameron Pass, Mount Blue Sky, Laramie and Medicine Bow Mountains, and Rocky Mountain National Park 446 PM MST Mon Jan 15 2024 ...WINTER STORM WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON... Snow has ended but blowing snow and strong winds will continue to create hazardous travel conditions. Please heed all road closures. $$ COZ030-032-160100- /O.EXP.KBOU.WW.Y.0004.000000T0000Z-240116T0000Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Fraser, Granby, Gould, Dillon, Hot Sulphur Springs, Spicer, North Park, Rand, Grand Lake, Kremmling, and Walden 446 PM MST Mon Jan 15 2024 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 PM MST THIS AFTERNOON... The threat has ended. $$ COZ038>051-161315- /O.CON.KBOU.WC.W.0001.000000T0000Z-240116T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet-Northeast Weld County-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County-Washington County-Sedgwick County- Phillips County- Including the cities of Littleton, Deer Trail, Julesburg, Byers, Crook, Sterling, Brighton, Golden, Castle Rock, Agate, Fondis, Roggen, Parker, Merino, Holyoke, City of Denver, Briggsdale, Karval, Lakewood, Boulder, Leader, Highlands Ranch, Bennett, Otis, Elbert, Longmont, Matheson, Forder, Hereford, Akron, Sedgwick, Punkin Center, Nunn, Raymer, Pawnee Buttes, Greeley, Ovid, Kutch, Peetz, Amherst, Kiowa, Larkspur, Loveland, Denver International Airport, Grover, Wiggins, Cope, Fort Collins, Stoneham, Fort Morgan, Goodrich, Brush, Hugo, Aurora, Eaton, Last Chance, Fort Lupton, Arvada, Limon, and Haxtun 446 PM MST Mon Jan 15 2024 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 40 below zero. * WHERE...East central and northeast Colorado. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Danielson
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this winter storm warning went out at Jan 11, 11:28 AM MST, 31 minutes earlier. Its key messages:
- First round of snow (mostly in the mountains) decreases today
- Next round of mountain snow, blowing snow, and hazardous travel conditions arrives tonight
- Arctic blast certain late Friday night through Monday. Coldest air of the season by far with subzero readings expected.
- Long duration and potentially heavy snow event for the mountains through this weekend. Could be measuring in feet in some alpine areas. Periods of light snow for the plains.
Area forecast discussion, Jan 11, 11:28 AM MST, 31 minutes before
Area Forecast Discussion National Weather Service Denver/Boulder CO 1128 AM MST Thu Jan 11 2024 .KEY MESSAGES... - First round of snow (mostly in the mountains) decreases today - Next round of mountain snow, blowing snow, and hazardous travel conditions arrives tonight - Arctic blast certain late Friday night through Monday. Coldest air of the season by far with subzero readings expected. - Long duration and potentially heavy snow event for the mountains through this weekend. Could be measuring in feet in some alpine areas. Periods of light snow for the plains. && .UPDATE... Issued at 1115 AM MST Thu Jan 11 2024 We've been watching the lower clouds and colder air over the northeast plains coming in a bit faster and further west than expected. This area has low clouds and flurries in addition to being 5-10 degrees colder. It looks on track to brush by the Denver area mid afternoon to late evening, with a pocket of drier air dropping along the foothills north of Denver for a while. The plan is for the surge of northeast winds to pass with the edge of the colder/moister air staying around Denver or just southeast, and then we get west winds pushing back against it by midnight. This may be a bit optimistic though, and Denver could wind up in the flurry regime for 6-9 hours in the late afternoon/evening. For now, the PoPs we have should be adequate, as any snow should be light. We'll move the hourly temperature forecasts more towards the HRRR which seems to be doing alright. It may be even a bit colder at late afternoon across most of the plains. Mountains snow is winding down as drier air moves in. We'll drop the Winter Weather Advisory we have going now. Increasing mountain snow looks on track with the Park Range kicking in around midnight and the rest of our mountains a few hours later. && .SHORT TERM...(Today and tonight) Issued at 400 AM MST Thu Jan 11 2024 Satellite shows a well organized, picturesque wave of enhanced clouds stretching from western Nebraska across northern Colorado and into the Great Basin. This is located in an area of QG lift, upper level divergence, and mid level frontogenesis. At the surface, a cold front is moving south through southeast Wyoming and the Nebraska Panhandle in these wee morning hours. That happens to be just a taste of the arctic cold to come. More on that in the long term forecast discussion below. We will be trending colder today with that initial cold front, with high temperatures only in the 20s on the plains, and even some teens where the airmass becomes more fully entrenched on the northeast plains and northern border area. With regard to snow, the mountains are seeing solid snow and accumulations of a few inches in most locations. Meanwhile, the plains are seeing mostly virga as the low levels are still quite dry. That should change with the switch of airmasses and an upslope component developing to help. But even then, most models are not producing anything more than a few spots of light snow. It's not "over", but we don't think the chances of accumulating snowfall in the lower elevations is that good. That said, it's still worth noting the impressive nature of satellite and moderate mid level frontogenesis and upslope which would help our case. An ingredients based approach still says to be vigilant. If we had to pick a couple spots, it looks like the northeast corner and Palmer Divide area would have the best chance of a little light snow. Meanwhile, the mountain snowfall will gradually taper off this morning as the best lift shifts to the south and east. We may be able to end the Winter Weather Advisory closer to noon today with only light showers lingering for the afternoon. For tonight, the next round of snow will start to increase in the mountains as we get into higher lapse rates and stronger orographics. The moisture depth is still somewhat marginal, but the rest of the picture from high lapse rates of 7-8.5 C/km and cross mountain flow increasing to 35-45 knots looks promising. We'll issue a Winter Storm Watch beginning at 06Z, and then continuing through this next defined period of mountain snowfall. More on that below as well. While amounts through Friday night/Saturday may be shy of traditional warning criteria for the Front Range Mountains and Summit County, the winds and blowing snow will make up for it with hazardous travel conditions and poor visibility. .LONG TERM...(Friday through Wednesday) Issued at 400 AM MST Thu Jan 11 2024 While an upper level low pushes east, zonal flow increases as pressure gradients tighten. Westerly winds will likely increase, especially with the assistance of 130kt upper jet, from the mountains to the foothills. Expect wind gusts to hover right below wind headline criteria between 50-65 mph but snowfall should limit wind exceeding to 70 mph. The warmest day this week remains Friday as lee side troughing allows downslope winds to keep temperatures between 27-34 across plains along with wind gusts up to 35-40 mph. As light to moderate snowfall through orographic flow continues for the mountains and valleys, Friday afternoon temperatures should reach 5-15F. By late Friday into Saturday, snow will likely spread into the northern foothills and plains. Although amounts could reach up to 1 inch, the combination of frontogenesis and a favorable jet could result in higher amounts between 2-3 inches along the eastern plains mainly above I-76. A few patchy spots of blowing could occur if banding becomes heavy. High temperatures in the single digits both Saturday and Sunday. Wind chills of 20 below to 30 below are likely across the plains starting Saturday night, Sunday night, and Monday night. A long- fused Wind Chill Watch covers these areas Saturday afternoon through Tuesday morning. Cross sections indicate as mountain snow continues, weak showers could cross the divide leading to trace amounts for the I-25 corridor. This update included slightly higher QPF amounts Sunday for elevations above 10k ft thus increasing snowfall totals to 1-2 ft from Saturday to Sunday night. By Monday, weak subsidence can be spotted from the QG fields. Mountain snow should subside by Monday evening. Little warming will occur Tuesday and partly cloudy skies could lead to melting for any lingering snow along the plains. Ensemble solutions differ by Wednesday with how quickly a ridge pattern enters the CWA. 700mb temperatures are slight warmer which may lead to overall warmer temperatures compared to this weekend. && .AVIATION...(For the 18Z TAFS through 18Z Friday afternoon) Issued at 1115 AM MST Thu Jan 11 2024 There's uncertainty about ceilings this afternoon as an area of low clouds and flurries over the plains will come close to KDEN/KAPA in the late afternoon and evening hours. We do expect instrument approaches to KDEN through 03z-05z with northeast winds gusting up to 25 knots. There is a chance (30%) of several hours of IFR ceilings and flurries if the low clouds come a bit further west than expected. There's a smaller (10%) chance of LIFR ceilings for a few hours sometime between 21z and 03z. After that, VFR conditions will resume with winds becoming southwest. && .BOU WATCHES/WARNINGS/ADVISORIES... Winter Storm Watch from 11 PM MST this evening through Saturday afternoon for COZ031-033-034. Wind Chill Watch from Saturday afternoon through Tuesday morning for COZ038>051. && UPDATE...Gimmestad SHORT TERM...Barjenbruch LONG TERM...AD AVIATION...Gimmestad
Hazardous weather outlook, Jan 11, 11:11 AM MST, 48 minutes before
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 1111 AM MST Thu Jan 11 2024 COZ030>051-121815- Jackson County Below 9000 Feet- West Jackson and West Grand Counties Above 9000 Feet- Grand and Summit Counties Below 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Central and Southeast Park County- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Logan County-Washington County-Sedgwick County-Phillips County- 1111 AM MST Thu Jan 11 2024 This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight Colder air will pour into eastern Colorado this afternoon, with falling temperatures in the teens, and single digits in the northeast corner. Winds gusting up to 35 mph will add to the cold. Wind chills late this afternoon will range from near zero in the I-25 corridor to as low as 10 below in northeastern Colorado. There will be light snow showers in the mountains, mainly over the ridges. A few light showers are also possible on the plains. Accumulations will be less than an inch. Snow will increase again in the mountains late tonight, with hazardous travel conditions due to snow covered roads and blowing snow. Wind gusts up to 50 mph are expected above timberline and on the higher east slopes of the Front Range. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Bitterly cold air arrives this weekend across the foothills and plains. Multiple rounds of light snow and little warming in low temperatures reaching below zero on Friday and Saturday nights with negative teens possible. Wind chill readings during this period will be dangerously cold, with frostbite potential on exposed skin in as little as 10 minutes. On Friday night, there will be a few bands of snow that move over the plains. These bands may produce snowfall between 1-4" mainly north of Denver. For the mountains and valleys, light to moderate snowfall will continue through early next week with the two periods of heaviest snowfall occurring Friday night and Sunday morning. Hazardous travel conditions due to blowing snow could occur especially along mountain passes due to wind gusts up to 50-65 mph both Friday and Saturday. .SPOTTER INFORMATION STATEMENT... Spotter reports of snowfall or high winds will be appreciated. Gimmestad/Danielson
In the hours before
Local storm report, Jan 11, 8:29 AM MST, 3 hours 30 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Denver CO
829 AM MST Thu Jan 11 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1235 PM Non-Tstm Wnd Gst 3 SW Rocky Flats 39.87N 105.24W
01/10/2024 M65 MPH Jefferson CO Mesonet
Mesonet station CO109 Rocky Flats Hwy 93 and
72.
1135 AM Non-Tstm Wnd Gst 3 ESE Buckeye 40.81N 105.04W
01/10/2024 M61 MPH Larimer CO Mesonet
Mesonet station BEYC2 Buckeye.
1106 AM Non-Tstm Wnd Gst 6 SW Carr 40.84N 104.97W
01/10/2024 M60 MPH Larimer CO Mesonet
Mesonet station CO166 I-25 and Buckeye Rd.
1109 AM Non-Tstm Wnd Gst 2 NNE Natural Fort 40.99N 104.91W
01/10/2024 M60 MPH Weld CO Mesonet
Mesonet station CO041 I-25 at Wyoming
Border.
1220 PM Non-Tstm Wnd Gst 4 NNW White Ranch Open 39.87N 105.32W
01/10/2024 M59 MPH Jefferson CO Mesonet
Mesonet station 1925W Coal Creek Canyon.
&&The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 3:10 AM MST | Wind Chill Watch | BOU | Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 10 more | 23 hr |
| Jan 11, 3:10 AM MST | Winter Storm Watch | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more | 9 hr |
Nearby
Winter Storm Warnings in Colorado, 2024Every winter storm warning in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.