Alert archive / Colorado / Winter Storm Warnings in 2018
Winter Storm Warning 1, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at Jan 20, 2018, 5:24 AM MST for 22 counties in Colorado. It took effect at Jan 20, 2018, 6:00 PM MST. It was in force for 23 hr. 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 20, 2018, 5:24 AM MST (12:24 UTC)
- In effect from
- Jan 20, 2018, 6:00 PM MST
- Expired
- Jan 21, 2018, 5:00 PM MST
- In force
- 23 hr
- Issued by
- NWS Denver/Boulder, CO
All 22 counties
Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Park County, CO, Phillips County, CO, Sedgwick County, CO, Summit County, CO, Washington County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 21 km from the middle of the area, began a volume at 12:29 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 21, 4:45 AM MST | SNOW 3 | 1 N Arvada, CO | STORM TOTAL. |
| Jan 21, 5:00 AM MST | SNOW 1 | Denver Intl Airport, CO | STORM TOTAL AT 5AM. |
| Jan 21, 5:00 AM MST | HEAVY SNOW 8 | Echo Lake, CO | STORM TOTAL. |
| Jan 21, 5:03 AM MST | SNOW 2 | 1 W Aurora, CO | STORM TOTAL. ICE GLAZE BENEATH. |
| Jan 21, 5:04 AM MST | SNOW 3.5 | Lafayette, CO | STORM TOTAL. |
| Jan 21, 5:26 AM MST | SNOW 3.2 | 3 Sse Aurora, CO | STORM TOTAL. |
| Jan 21, 5:34 AM MST | SNOW 2.5 | 2 Nw Sheridan, CO | STORM TOTAL. |
| Jan 21, 5:45 AM MST | SNOW 1.5 | 1 Nnw Hygiene, CO | STORM TOTAL. |
| Jan 21, 5:45 AM MST | HEAVY SNOW 6 | 1 Ne Brookvale, CO | STORM TOTAL. CURRENTLY SNOWING LIGHTLY. |
| Jan 21, 6:00 AM MST | SNOW 3.5 | 2 Ese Lakewood, CO | STORM TOTAL. |
| Jan 21, 6:00 AM MST | HEAVY SNOW 8.2 | 3 S Georgetown, CO | STORM TOTAL. |
| Jan 21, 6:22 AM MST | SNOW 4 | 4 W Englewood, CO | STORM TOTAL. REPORT VIA TWITTER. |
| Jan 21, 6:30 AM MST | HEAVY SNOW 6 | 4 Wsw Eldorado Springs, CO | STORM TOTAL. |
| Jan 21, 6:35 AM MST | SNOW 4.5 | Lafayette, CO | STORM TOTAL. |
| Jan 21, 6:55 AM MST | SNOW 4 | 1 Nnw Federal Heights, CO | STORM TOTAL. |
| Jan 21, 7:00 AM MST | SNOW 1.2 | 3 W Greeley, CO | STORM TOTAL. ABOUT 0.05 INCHES OF FREEZING DRIZZLE BEFORE THE SNOW. |
| Jan 21, 7:00 AM MST | SNOW 1.6 | 2 N Longmont, CO | STORM TOTAL. |
| Jan 21, 7:00 AM MST | SNOW 2 | 2 Nw Strasburg, CO | STORM TOTAL. |
| Jan 21, 7:00 AM MST | SNOW 2 | 5 N Fort Collins, CO | |
| Jan 21, 7:00 AM MST | SNOW 4 | 1 Ese Wheat Ridge, CO | SNOWFALL BETWEEN 11PM AND 7AM. |
| Jan 21, 7:00 AM MST | SNOW 5.1 | 2 Wsw Wheat Ridge, CO | STORM TOTAL. 0.31 INCHES OF WATER EQUIVALENT. |
| Jan 21, 7:10 AM MST | SNOW 3.4 | 1 Nnw Louisville, CO | STORM TOTAL. 0.30 INCHES OF SNOW WATER EQUIVALENT. |
| Jan 21, 7:19 AM MST | SNOW 2.5 | Ese Castle Pines, CO | |
| Jan 21, 7:22 AM MST | SNOW 1.5 | 1 Ne Loveland, CO | STORM TOTAL. |
| Jan 21, 7:25 AM MST | SNOW 4 | 4 Ene Nederland, CO | STORM TOTAL. |
| Jan 21, 7:45 AM MST | SNOW 3.4 | 4 Ene Broomfield, CO | STORM TOTAL. |
| Jan 21, 7:50 AM MST | SNOW 2 | 5 S Fort Collins, CO | STORM TOTAL. 0.17 INCHES OF LIQUID EQUIVALENT. |
| Jan 21, 7:57 AM MST | SNOW 4.5 | 1 Nnw Louisville, CO | |
| Jan 21, 8:00 AM MST | HEAVY SNOW 7 | 3 Nw Idledale, CO | STORM TOTAL. |
| Jan 21, 8:10 AM MST | SNOW 2.7 | 1 Nw Niwot, CO | STORM TOTAL. |
| Jan 21, 8:30 AM MST | SNOW 4 | 3 Se Denver, CO | STORM TOTAL. |
| Jan 21, 8:52 AM MST | SNOW 3.2 | 4 S Manila Village, CO | STORM TOTAL. |
| Jan 21, 9:11 AM MST | SNOW 2.9 | Ese Castle Pines, CO | STORM TOTAL. |
| Jan 21, 9:29 AM MST | SNOW 1.5 | Nnw Iliff, CO | |
| Jan 21, 9:30 AM MST | HEAVY SNOW 6.5 | 3 W Conifer, CO | STORM TOTAL. |
| Jan 21, 9:30 AM MST | HEAVY SNOW 7 | 2 Sse Breckenridge, CO | STORM TOTAL. |
| Jan 21, 9:40 AM MST | SNOW 5.5 | 1 W Northglenn, CO | STORM TOTAL. |
| Jan 21, 9:45 AM MST | SNOW 2.5 | 4 S Fort Collins, CO | STORM TOTAL. |
| Jan 21, 9:45 AM MST | SNOW 3.5 | Cherry Creek Reservoir, CO | |
| Jan 21, 10:00 AM MST | SNOW 2.7 | 2 N Longmont, CO | STORM TOTAL. 0.22 INCHES OF LIQUID EQUIVALENT. |
| Jan 21, 10:00 AM MST | HEAVY SNOW 7 | 1 Sse Bergen Park, CO | STORM TOTAL. |
| Jan 21, 10:00 AM MST | HEAVY SNOW 9.3 | 3 Nw Idledale, CO | STORM TOTAL. 2.3 INCHES IN PAST 2 HOURS. |
| Jan 21, 10:12 AM MST | SNOW 4.3 | 1 W Northglenn, CO | STORM TOTAL. REPORT VIA TWITTER. |
| Jan 21, 10:12 AM MST | SNOW 4.5 | 1 Wnw Northglenn, CO | STORM TOTAL. REPORT VIA TWITTER. |
| Jan 21, 10:15 AM MST | SNOW 5 | 3 Nne Eldorado Springs, CO | STORM TOTAL. |
| Jan 21, 10:30 AM MST | SNOW 5.5 | 4 Nw Arvada, CO | STORM TOTAL. |
| Jan 21, 10:51 AM MST | HEAVY SNOW 6.9 | 3 Sse Aurora, CO | STORM TOTAL. |
| Jan 21, 11:00 AM MST | SNOW 2.5 | Denver Intl Airport, CO | STORM TOTAL. 1.5 INCHES WITHIN THE LAST 6 HOURS. 0.29 INCHES OF SNOW WATER EQUIVALENT. |
| Jan 21, 11:00 AM MST | HEAVY SNOW 8.8 | 3 Wsw Golden, CO | STORM TOTAL. |
| Jan 21, 11:00 AM MST | HEAVY SNOW 11 | 3 Se Pinecliffe, CO | STORM TOTAL. |
| Jan 21, 11:00 AM MST | HEAVY SNOW 12 | 4 Wsw Eldorado Springs, CO | STORM TOTAL. |
| Jan 21, 11:06 AM MST | SNOW 3 | 3 Ssw Denver, CO | 6 HOUR TOTAL. |
| Jan 21, 11:20 AM MST | HEAVY SNOW 6.1 | 3 N Conifer, CO | STORM TOTAL. |
| Jan 21, 11:30 AM MST | SNOW 2.8 | 3 W Greeley, CO | STORM TOTAL. 1.6 INCHES SINCE 7AM. CURRENTLY LIGHT SNOW. ROADS SNOWY. |
| Jan 21, 11:30 AM MST | HEAVY SNOW 9 | 3 W Conifer, CO | STORM TOTAL. |
| Jan 21, 12:00 PM MST | HEAVY SNOW 10.5 | 3 Nw Idledale, CO | STORM TOTAL. |
| Jan 21, 12:35 PM MST | HEAVY SNOW 7 | 4 Ene Nederland, CO | STORM TOTAL. |
| Jan 21, 12:41 PM MST | SNOW 4.1 | Ese Castle Pines, CO | STORM TOTAL. |
| Jan 21, 12:44 PM MST | SNOW 5 | 1 Nne Estes Park, CO | STORM TOTAL. 0.32 INCHES OF LIQUID EQUIVALENT. |
| Jan 21, 12:57 PM MST | SNOW 4.6 | Ese Castle Pines, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 0.4 hours before the alert went out and 120 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
- 3294 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
519 WWUS45 KBOU 201224 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 524 AM MST Sat Jan 20 2018 ...Winter Storm Bringing Snow and Gusty Winds to Portions of Northeast and North Central Colorado This Weekend... .A Four Corners low will track across Colorado this weekend bringing snow, possibly heavy at times, to the mountains and plains of north central and northeast Colorado. Snow will begin in the high country Saturday evening and spread east across the northeast plains of Colorado late Saturday night and Sunday morning. Prior to the snow, parts of northeast Colorado will see freezing drizzle which will make roads very slippery. As the storm intensifies northerly winds will increase to 25 to 40 mph by Sunday afternoon across the eastern plains. The gusty winds will produce areas of blowing snow which may reduce visibilities to less than a mile at times. Snowfall is expected to decrease from west to east Sunday afternoon and evening. COZ031-033>036-202030- /O.UPG.KBOU.WS.A.0001.180121T0100Z-180121T1900Z/ /O.NEW.KBOU.WS.W.0001.180121T0100Z-180121T1900Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 524 AM MST Sat Jan 20 2018 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MST SUNDAY... * WHAT...Heavy snow expected. Plan on difficult travel conditions. Total snow accumulations of 6 to 12 inches, with localized amounts up to 18 inches. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...From 6 PM this evening to noon MST Sunday. * ADDITIONAL DETAILS...Be prepared for snow covered and slippery roads. Significant reductions in visibility at times are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ038-043-202030- /O.UPG.KBOU.WS.A.0001.180121T0700Z-180122T0000Z/ /O.NEW.KBOU.WS.W.0001.180121T0700Z-180121T2100Z/ Fort Collins-Greeley- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Eaton, Fort Lupton, Greeley, and Roggen 524 AM MST Sat Jan 20 2018 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 2 PM MST SUNDAY... * WHAT...Freezing drizzle is expected late this evening and will change to snow early Sunday morning. Plan on difficult travel conditions. Total snow accumulations of 4 to 8 inches and light ice accumulations are expected. * WHERE...Fort Collins and Greeley. * WHEN...From midnight tonight to 2 PM MST Sunday. * ADDITIONAL DETAILS...Light ice accumulation may occur prior to snowfall and make roads very slippery tonight. Be prepared for significant reductions in visibility at times due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-202030- /O.UPG.KBOU.WS.A.0001.180121T0700Z-180122T0000Z/ /O.NEW.KBOU.WS.W.0001.180121T0700Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 524 AM MST Sat Jan 20 2018 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 5 PM MST SUNDAY... * WHAT...Freezing drizzle is expected late this evening and will change to snow early Sunday morning. Plan on difficult travel conditions. Total snow accumulations of 5 to 10 inches and light ice accumulations are expected. * WHERE...Portions of northeast Colorado. * WHEN...From midnight tonight to 5 PM MST Sunday. * ADDITIONAL DETAILS...Light ice accumulation may occur prior to snowfall and make roads very slippery tonight. Be prepared for significant reductions in visibility at times due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ046-048>051-202030- /O.UPG.KBOU.WS.A.0001.180121T0700Z-180122T0000Z/ /O.NEW.KBOU.WS.W.0001.180121T0700Z-180122T0300Z/ Limon-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 524 AM MST Sat Jan 20 2018 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 PM MST SUNDAY... * WHAT...Freezing drizzle is expected late this evening and will change to snow early Sunday morning. Plan on difficult travel conditions. Total snow accumulations of 5 to 10 inches and light ice accumulations are expected. * WHERE...Limon, Sterling, Akron, Julesburg and Holyoke. * WHEN...From midnight tonight to 8 PM MST Sunday. * ADDITIONAL DETAILS...Light ice accumulation may occur prior to snowfall and make roads very slippery tonight. Be prepared for significant reductions in visibility at times due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ030-032-202030- /O.NEW.KBOU.WW.Y.0005.180121T0100Z-180121T1900Z/ North Park-Grand and Summit Counties Below 9000 Feet- Including the cities of Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 524 AM MST Sat Jan 20 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO NOON MST SUNDAY... * WHAT...Snow expected. Plan on slippery road conditions. Total snow accumulations of 4 to 8 inches. * WHERE...North Park and Grand and Summit Counties Below 9000 Feet. * WHEN...From 6 PM this evening to noon MST Sunday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Be prepared for slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
8 follow-up statements
626 WWUS45 KBOU 202125 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 225 PM MST Sat Jan 20 2018 ...Winter Storm Bringing Snow and Gusty Winds to Portions of Northeast and North Central Colorado This Weekend... .A Four Corners low will track across Colorado this weekend bringing snow, possibly heavy at times, to the mountains and plains of north central and northeast Colorado. Snow will begin in the high country this evening and spread east across the northeast plains of Colorado later tonight into Sunday morning. Prior to the snow, parts of northeast Colorado will see freezing drizzle which will make roads very slippery. As the storm intensifies northerly winds will increase to 25 to 40 mph by Sunday afternoon across the eastern plains. The gusty winds will produce areas of blowing snow which may reduce visibilities to less than a mile at times. Snowfall is expected to decrease from west to east Sunday afternoon and evening. COZ031-033>036-210530- /O.CON.KBOU.WS.W.0001.180121T0100Z-180121T1900Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 225 PM MST Sat Jan 20 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO NOON MST SUNDAY... * WHAT...Heavy snow expected. Plan on difficult travel conditions. Total snow accumulations of 7 to 12 inches, with localized amounts up to 18 inches. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...From 6 PM this evening to noon MST Sunday. * ADDITIONAL DETAILS...Be prepared for snow covered and slippery roads. Significant reductions in visibility at times are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ038-043-210530- /O.CON.KBOU.WS.W.0001.180121T0700Z-180121T2100Z/ Fort Collins-Greeley- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Eaton, Fort Lupton, Greeley, and Roggen 225 PM MST Sat Jan 20 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 2 PM MST SUNDAY... * WHAT...Freezing drizzle is expected late this evening and will change to snow early Sunday morning. Plan on difficult travel conditions. Total snow accumulations of 4 to 8 inches and light ice accumulations are expected. * WHERE...Fort Collins and Greeley. * WHEN...From midnight tonight to 2 PM MST Sunday. * ADDITIONAL DETAILS...Light ice accumulation may occur prior to snowfall and make roads very slippery tonight. Be prepared for significant reductions in visibility at times due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-210530- /O.CON.KBOU.WS.W.0001.180121T0700Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 225 PM MST Sat Jan 20 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 5 PM MST SUNDAY... * WHAT...Freezing drizzle is expected late this evening and will change to snow early Sunday morning. Plan on difficult travel conditions. Total snow accumulations of 5 to 10 inches and light ice accumulations are expected. * WHERE...Portions of northeast Colorado. * WHEN...From midnight tonight to 5 PM MST Sunday. * ADDITIONAL DETAILS...Light ice accumulation may occur prior to snowfall and make roads very slippery tonight. Be prepared for significant reductions in visibility at times due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ046-048>051-210530- /O.CON.KBOU.WS.W.0001.180121T0700Z-180122T0300Z/ Limon-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 225 PM MST Sat Jan 20 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 PM MST SUNDAY... * WHAT...Freezing drizzle is expected late this evening and will change to snow early Sunday morning. Plan on difficult travel conditions. Total snow accumulations of 5 to 10 inches and light ice accumulations are expected. Highest accumulations over the far northeast corner. * WHERE...Limon, Sterling, Akron, Julesburg and Holyoke. * WHEN...From midnight tonight to 8 PM MST Sunday. * ADDITIONAL DETAILS...Light ice accumulation may occur prior to snowfall and make roads very slippery tonight. Be prepared for significant reductions in visibility at times due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ030-032-210530- /O.CON.KBOU.WW.Y.0005.180121T0100Z-180121T1900Z/ North Park-Grand and Summit Counties Below 9000 Feet- Including the cities of Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 225 PM MST Sat Jan 20 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO NOON MST SUNDAY... * WHAT...Snow expected. Plan on slippery road conditions. Total snow accumulations of 4 to 8 inches. * WHERE...North Park and Grand and Summit Counties Below 9000 Feet. * WHEN...From 6 PM this evening to noon MST Sunday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Be prepared for slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
910 WWUS45 KBOU 202310 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 410 PM MST Sat Jan 20 2018 ...Winter Storm Bringing Snow and Gusty Winds to Northeast and North Central Colorado tonight into Sunday night... .A Four Corners low will track across Colorado this weekend bringing snow, heavy at times, to the mountains and plains of north central and northeast Colorado. Snow will begin in the high country this evening and spread east across the northeast plains of Colorado later tonight into Sunday morning. Prior to the snow, parts of northeast Colorado will see freezing drizzle which will make roads very slippery. As the storm intensifies northerly winds will increase to 25 to 40 mph by Sunday afternoon across the eastern plains. The gusty winds will produce areas of blowing snow which may reduce visibilities to less than a mile at times. Snowfall is expected to decrease from west to east Sunday afternoon and evening. COZ031-033>036-210715- /O.CON.KBOU.WS.W.0001.180121T0100Z-180121T1900Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 410 PM MST Sat Jan 20 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST SUNDAY... * WHAT...Heavy snow expected. Plan on difficult travel conditions. Total snow accumulations of 7 to 12 inches, with localized amounts up to 18 inches. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...From 6 PM this evening to noon MST Sunday. * ADDITIONAL DETAILS...Be prepared for snow covered and slippery roads. Significant reductions in visibility at times are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ038-043-210715- /O.CON.KBOU.WS.W.0001.180121T0700Z-180121T2100Z/ Fort Collins-Greeley- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Eaton, Fort Lupton, Greeley, and Roggen 410 PM MST Sat Jan 20 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 2 PM MST SUNDAY... * WHAT...Freezing drizzle is expected late this evening and will change to snow early Sunday morning. Plan on difficult travel conditions. Total snow accumulations of 4 to 8 inches and light ice accumulations are expected. * WHERE...Fort Collins and Greeley. * WHEN...From midnight tonight to 2 PM MST Sunday. * ADDITIONAL DETAILS...Light ice accumulation may occur prior to snowfall and make roads very slippery tonight. Be prepared for significant reductions in visibility at times due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-210715- /O.CON.KBOU.WS.W.0001.180121T0700Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 410 PM MST Sat Jan 20 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 5 PM MST SUNDAY... * WHAT...Freezing drizzle is expected late this evening and will change to snow early Sunday morning. Plan on difficult travel conditions. Total snow accumulations of 5 to 10 inches and light ice accumulations are expected. * WHERE...Portions of northeast Colorado. * WHEN...From midnight tonight to 5 PM MST Sunday. * ADDITIONAL DETAILS...Light ice accumulation may occur prior to snowfall and make roads very slippery tonight. Be prepared for significant reductions in visibility at times due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ046-048>051-210715- /O.CON.KBOU.WS.W.0001.180121T0700Z-180122T0300Z/ Limon-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 410 PM MST Sat Jan 20 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 PM MST SUNDAY... * WHAT...Freezing drizzle is expected late this evening and will change to snow early Sunday morning. Plan on difficult travel conditions. Total snow accumulations of 5 to 10 inches and light ice accumulations are expected. Highest accumulations over the far northeast corner. * WHERE...Limon, Sterling, Akron, Julesburg and Holyoke. * WHEN...From midnight tonight to 8 PM MST Sunday. * ADDITIONAL DETAILS...Light ice accumulation may occur prior to snowfall and make roads very slippery tonight. Be prepared for significant reductions in visibility at times due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are expected. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ047-210715- /O.EXB.KBOU.WW.Y.0005.180121T1500Z-180122T0000Z/ Southern Lincoln County- Including the cities of Forder, Karval, Kutch, and Punkin Center 410 PM MST Sat Jan 20 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 8 AM TO 5 PM MST SUNDAY... * WHAT...Freezing drizzle is expected from midnight tonight, with snow developing early Sunday morning. Plan on difficult travel conditions. Total snow accumulations of 3 to 5 inches and light ice accumulations are expected. * WHERE...Southern Lincoln County. * WHEN...From 8 AM to 5 PM MST Sunday. * ADDITIONAL DETAILS...Light ice accumulation may occur prior to snowfall and make roads very slippery tonight. Be prepared for significant reductions in visibility at times due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Be prepared for slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ030-032-210715- /O.CON.KBOU.WW.Y.0005.180121T0100Z-180121T1900Z/ North Park-Grand and Summit Counties Below 9000 Feet- Including the cities of Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 410 PM MST Sat Jan 20 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST SUNDAY... * WHAT...Snow expected. Plan on slippery road conditions. Total snow accumulations of 4 to 8 inches. * WHERE...North Park and Grand and Summit Counties Below 9000 Feet. * WHEN...From 6 PM this evening to noon MST Sunday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Be prepared for slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
404 WWUS45 KBOU 210724 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1224 AM MST Sun Jan 21 2018 ...Winter Storm Bringing Snow and Gusty Winds to Northeast and North Central Colorado tonight into Sunday night... .A Four Corners low will track across Colorado today bringing snow, heavy at times, to the mountains and plains of north central and northeast Colorado. Snow has begun in the high country and will spread east across the northeast plains of Colorado later this morning. Parts of northeast Colorado have seen freezing drizzle over the past few hours, but locations near the foothills are now seeing light snowfall. As the storm intensifies late this morning and through the afternoon, northerly winds will increase to 25 to 40 mph across the eastern plains. The gusty winds will produce areas of blowing snow which may reduce visibilities to less than a mile at times. Snowfall is expected to decrease from west to east late this afternoon and evening. COZ031-033>036-211530- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T1900Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 1224 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 6 to 10 inches, with localized amounts up to 14 inches, are expected. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...Until noon MST today. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ038-043-211530- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T2100Z/ Fort Collins-Greeley- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Eaton, Fort Lupton, Greeley, and Roggen 1224 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... * WHAT...A mix of freezing drizzle and light snow occurring. Snow fall is expected to increase in intensity after sunrise. Plan on difficult travel conditions. Snow accumulations of 4 to 8 inches and ice accumulations of a light glaze are expected. * WHERE...Fort Collins and Greeley. * WHEN...Until 2 PM MST this afternoon. * ADDITIONAL DETAILS...Winds gusting as high as 40 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are occurring. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-211530- /O.CON.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 1224 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...A mix of freezing drizzle and light snow occurring. Freezing drizzle will change over to light snow by 2 AM. Snow intensity is expected to increase by midday. Plan on difficult travel conditions. Additional snow accumulations of 4 to 6 inches, with localized amounts up to 8 inches, and ice accumulations of a light glaze are expected. * WHERE...Portions of northeast Colorado. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Winds gusting as high as 45 mph will cause areas of blowing and drifting snow later today. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are occurring. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ046-048>051-211530- /O.CON.KBOU.WS.W.0001.000000T0000Z-180122T0300Z/ Limon-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 1224 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Freezing drizzle occurring. Snow is expected to develop by sunrise. Snow intensity will increase through the day. Plan on difficult travel conditions. Additional snow accumulations of 5 to 8 inches and ice accumulations of up to one tenth of an inch are expected. * WHERE...Limon, Sterling, Akron, Julesburg and Holyoke. * WHEN...Until 8 PM MST this evening. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph later today will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are occurring. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ030-032-211530- /O.CON.KBOU.WW.Y.0005.000000T0000Z-180121T1900Z/ North Park-Grand and Summit Counties Below 9000 Feet- Including the cities of Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 1224 AM MST Sun Jan 21 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...Snow occurring. Plan on slippery road conditions. Additional snow accumulations of 4 to 6 inches are expected. * WHERE...North Park and Grand and Summit Counties Below 9000 Feet. * WHEN...Until noon MST today. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ047-211530- /O.CON.KBOU.WW.Y.0005.180121T1500Z-180122T0000Z/ Southern Lincoln County- Including the cities of Forder, Karval, Kutch, and Punkin Center 1224 AM MST Sun Jan 21 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING TO 5 PM MST THIS AFTERNOON... * WHAT...Mixed precipitation expected. Plan on slippery road conditions. In addition, areas of poor visibility are expected. Total snow accumulations of 2 to 4 inches and ice accumulations of a light glaze are expected. * WHERE...Southern Lincoln County. * WHEN...From 8 AM this morning to 5 PM MST this afternoon. * ADDITIONAL DETAILS...Winds gusting as high as 55 mph later today will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Be prepared for slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
952 WWUS45 KBOU 211115 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 415 AM MST Sun Jan 21 2018 ...Winter Storm Bringing Snow and Gusty Winds to Northeast and North Central Colorado Tonight into Sunday Night... .A Four Corners low will track across Colorado today bringing snow, heavy at times, to the mountains and plains of north central and northeast Colorado. Snow will continue to spread east across eastern Colorado this morning. Parts of eastern Colorado may see freezing drizzle through mid morning. As the storm intensifies late this morning and afternoon, northerly winds will increase to 25 to 40 mph with gusts to 50 mph across the eastern plains. The gusty winds will produce blowing snow which will reduce visibilities to near zero at times. Snowfall is expected to decrease from west to east late this afternoon and evening. COZ046-048>051-212100- /O.UPG.KBOU.WS.W.0001.000000T0000Z-180122T0300Z/ /O.NEW.KBOU.BZ.W.0001.180121T1115Z-180122T0700Z/ Limon-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 415 AM MST Sun Jan 21 2018 ...BLIZZARD WARNING IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions will develop late this morning and early afternoon. Travel will be very dangerous to impossible. Additional snow accumulations of 6 to 9 inches are expected. * WHERE...Limon, Sterling, Akron, Julesburg and Holyoke. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ047-212100- /O.UPG.KBOU.WW.Y.0005.180121T1500Z-180122T0000Z/ /O.NEW.KBOU.BZ.W.0001.180121T1115Z-180122T0700Z/ Southern Lincoln County- Including the cities of Forder, Karval, Kutch, and Punkin Center 415 AM MST Sun Jan 21 2018 ...BLIZZARD WARNING IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions will develop late this morning and early afternoon. Travel will be very dangerous to impossible. Additional snow accumulations of 2 to 6 inches are expected. * WHERE...Southern Lincoln County. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 55 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ031-033>036-211900- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T1900Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 415 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 5 to 10 inches are expected. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...Until noon MST today. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ038-043-212100- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T2100Z/ Fort Collins-Greeley- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Eaton, Fort Lupton, Greeley, and Roggen 415 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 4 to 7 inches are expected. * WHERE...Fort Collins and Greeley. * WHEN...Until 2 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are occurring. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-212100- /O.CON.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 415 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 4 to 7 inches, with localized amounts up to 9 inches. * WHERE...Portions of northeast Colorado. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice are occurring. This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ030-032-211900- /O.CON.KBOU.WW.Y.0005.000000T0000Z-180121T1900Z/ North Park-Grand and Summit Counties Below 9000 Feet- Including the cities of Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 415 AM MST Sun Jan 21 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...Snow occurring. Plan on slippery road conditions. Additional snow accumulations of 3 to 6 inches are expected. * WHERE...North Park and Grand and Summit Counties Below 9000 Feet. * WHEN...Until noon MST today. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
738 WWUS45 KBOU 211623 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 923 AM MST Sun Jan 21 2018 .Upper low over far South Central Colorado this morning will move east through this afternoon, and will continue to bring snow, heavy at times to the plains of northeast Colorado. Latest radar imagery indicating the storm is intensifying and snowfall will continue increase through late morning for locations mainly along and east of a line from Denver to Fort Morgan and points East and south across the Palmer Divide. Snowfall rates will be 1 to 2 inches in an hour can be expected in the heaviest snow. Snowfall amounts so far have been in the 2 to 4 inch range with upwards of 7 inches in the Front Range foothills. As the storm intensifies late this morning and afternoon, northerly winds will increase to 25 to 35 mph with gusts to 50 mph across the eastern plains. The gusty winds will produce blowing snow which will reduce visibilities to near zero at times. Snowfall is expected to decrease from west to east late this afternoon and evening. COZ046>051-220030- /O.CON.KBOU.BZ.W.0001.000000T0000Z-180122T0700Z/ Limon-Southern Lincoln County-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 923 AM MST Sun Jan 21 2018 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions will develop late this morning and early afternoon. Travel will be very dangerous to impossible. snow accumulations of 6 to 9 inches are expected. * WHERE...Limon, Sterling, Akron, Julesburg and Holyoke. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ031-033>036-211900- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T1900Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 923 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...snow occurring. Plan on difficult travel conditions. snow accumulations of 5 to 10 inches are expected, heaviest snow on east facing slopes. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...Until noon MST today. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ038-043-212100- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T2100Z/ Fort Collins-Greeley- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Eaton, Fort Lupton, Greeley, and Roggen 923 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... * WHAT...Light to moderate snow occurring. Plan on difficult travel conditions. snow accumulations of 4 to 7 inches are expected. * WHERE...Fort Collins and Greeley. * WHEN...Until 2 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-220000- /O.CON.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 923 AM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. snow accumulations of 4 to 7 inches, with localized amounts up to 9 inches. * WHERE...Portions of northeast Colorado. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ030-032-211900- /O.CON.KBOU.WW.Y.0005.000000T0000Z-180121T1900Z/ North Park-Grand and Summit Counties Below 9000 Feet- Including the cities of Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 923 AM MST Sun Jan 21 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...Snow occurring. Plan on slippery road conditions. Additional snow accumulations of 3 to 6 inches are expected. * WHERE...North Park and Grand and Summit Counties Below 9000 Feet. * WHEN...Until noon MST today. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
489 WWUS45 KBOU 211902 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1202 PM MST Sun Jan 21 2018 .Upper low over far southeastern Colorado will move east through this afternoon, and will continue to bring snow, heavy at times to the plains of northeast Colorado. Snowfall will continue to increase across the eastern plains. Snowfall rates will be 1 to 2 inches in an hour can be expected in the heaviest snow. Northerly winds are increasing to 25 to 35 mph with gusts to 50 mph across the eastern plains. The gusty winds will produce blowing snow which will reduce visibilities to near zero at times. Snowfall is expected to decrease from west to east late this afternoon and evening. COZ030-032-212015- /O.EXP.KBOU.WW.Y.0005.000000T0000Z-180121T1900Z/ North Park-Grand and Summit Counties Below 9000 Feet- Including the cities of Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 1202 PM MST Sun Jan 21 2018 ...WINTER WEATHER ADVISORY WILL EXPIRE AT NOON MST TODAY... Light snow will continue through the afternoon, with an additional 1 to 2 inches expected through early evening. $$ COZ031-033>036-212200- /O.EXT.KBOU.WS.W.0001.000000T0000Z-180121T2200Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 1202 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 3 PM MST THIS AFTERNOON... * WHAT...Snow occurring, but will be decrease through the afternoon. Snow will linger the longest over the mountains of Summit County and around I-70. Plan on difficult travel conditions. Additional snow accumulations of 2 to 5 inches are expected, heaviest snow on east facing slopes and mountains along I70. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...Until 3 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ046>051-220315- /O.CON.KBOU.BZ.W.0001.000000T0000Z-180122T0700Z/ Limon-Southern Lincoln County-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 1202 PM MST Sun Jan 21 2018 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions will develop late this morning and early afternoon. Travel will be very dangerous to impossible. snow accumulations of 6 to 9 inches are expected. * WHERE...Limon, Sterling, Akron, Julesburg and Holyoke. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ038-043-212100- /O.CON.KBOU.WS.W.0001.000000T0000Z-180121T2100Z/ Fort Collins-Greeley- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Eaton, Fort Lupton, Greeley, and Roggen 1202 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... * WHAT...Light to moderate snow occurring. Plan on difficult travel conditions. snow accumulations of 4 to 7 inches are expected. * WHERE...Fort Collins and Greeley. * WHEN...Until 2 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-220000- /O.CON.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 1202 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. snow accumulations of 4 to 7 inches, with localized amounts up to 9 inches. * WHERE...Portions of northeast Colorado. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
129 WWUS45 KBOU 212155 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 255 PM MST Sun Jan 21 2018 COZ031-033>036-212300- /O.EXP.KBOU.WS.W.0001.000000T0000Z-180121T2200Z/ Rabbit Ears Pass- Rocky Mountain National Park and the Medicine Bow Range- The Mountains of Summit County, the Mosquito Range, and the Indian Peaks-The Northern Front Range Foothills- The Southern Front Range Foothills- Including the cities of East Slopes Park and Northern Gore Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 255 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING WILL EXPIRE AT 3 PM MST THIS AFTERNOON... Light snow will continue through the evening and overnight, with an additional 1 to 4 inches expected. Gusty northwest winds will continue to create reduced visibility in blowing and drifting snow over the passes. $$ COZ046>051-220600- /O.CON.KBOU.BZ.W.0001.000000T0000Z-180122T0700Z/ Limon-Southern Lincoln County-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 255 PM MST Sun Jan 21 2018 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions occurring. Travel will be very dangerous to impossible. Additional snow accumulations of 4 to 6 inches are expected. * WHERE...Portions of east central and northeast Colorado. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ COZ039>042-044-045-220000- /O.CON.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 255 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate snow and blowing snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 1 to 4 inches are expected, highest amounts south and east of Denver. * WHERE...Portions of northeast Colorado. * WHEN...Until 5 PM MST this afternoon. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
951 WWUS45 KBOU 220007 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 507 PM MST Sun Jan 21 2018 COZ039>042-044-045-220115- /O.EXP.KBOU.WS.W.0001.000000T0000Z-180122T0000Z/ Boulder and the western suburbs of Denver-Denver-Castle Rock- Briggsdale-Fort Morgan-Byers- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 507 PM MST Sun Jan 21 2018 ...WINTER STORM WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON... Areas of light snow will continue off and on over the Front Range Urban Corridor and adjacent plains this evening. Additional accumulations will be under one more inch. $$ COZ046>051-220700- /O.CON.KBOU.BZ.W.0001.000000T0000Z-180122T0700Z/ Limon-Southern Lincoln County-Sterling-Akron-Julesburg-Holyoke- Including the cities of Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 507 PM MST Sun Jan 21 2018 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT... * WHAT...Blizzard conditions occurring. Travel will be very dangerous to impossible. Additional snow accumulations of 4 to 6 inches are expected. * WHERE...Portions of east central and northeast Colorado. * WHEN...Until midnight MST tonight. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
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 20, 4:10 AM MST, 1 hour 14 minutes earlier.
Area forecast discussion, Jan 20, 4:10 AM MST, 1 hour 14 minutes before
Area Forecast Discussion National Weather Service Denver/Boulder CO 410 AM MST Sat Jan 20 2018 .SHORT TERM...(Today and tonight) Issued at 410 AM MST Sat Jan 20 2018 The strong Pacific storm system set to move across the Central Rockies later this weekend is currently moving onto the California coast. The upper level trough will move across the Desert Southwest and Great Basin today and into the Central Rockies late tonight. As it moves into the Central Rockies, a closed low forms near the Four Corners 12Z Sunday. Surface low pressure will deepen over southeast Colorado today causing winds to turn northeasterly north of I-70 across northeast Colorado. This will usher in cooler air today. Highs will range from the lower 40s north to lower 60s over southern Lincoln county. Only chance for snow today will be over far north central Colorado. The northeast winds will increase this evening as the surface low continues to strengthen. Low levels cool and moisten up this evening, ahead of the main storm system moving in. It appears a period of freezing drizzle is setting up late this evening and after midnight. There should be a few hours of freezing drizzle before the snow arrives. Strong QG ascent ahead of the upper level trough will move into west Colorado this evening and shift eastward through the night. This will produce a band of snow, which is expected to move over the north mountains late tonight and onto the Front Range towards 12Z. Biggest change to the forecast through tonight was to added freezing drizzle for late this evening through 12Z for northeast Colorado. This should produce slippery conditions prior to the snowfall. .LONG TERM...(Sunday through Friday) Issued at 410 AM MST Sat Jan 20 2018 Models continue to be a little slower with this weekend's system, which results in more snow, especially close to the mountains. The slower speed not only means a longer period of snow, but allows the low level winds on the plains to stay northeast longer. This should allow for some damming of the cold air near the Front Range, enhancing the snowfall a little more. Not really much depth to any upslope against the foothills, so no big enhancement there. Still expecting a bit more of a downslope component Sunday afternoon, but at first it will be the NNW wind that dries out Larimer and Weld counties, while northerly flow into the Palmer Divide, and maybe a little turning into the foothills W/SW of Denver, will continue through the afternoon. Model QPF is pretty uniform at around half an inch for Denver, with a bit more to the south and southeast, and less due to an earlier end with the wind picking up in Greeley/Fort Collins. This forecast adds another inch or two, especially in the Denver area which could do very well for about 6 hours mid morning through early afternoon. Winds will take a little while to wind up, but should be going pretty strong in the afternoon, with 40-50 mph gusts over the eastern part of the plains, and at least 30 mph near the mountains. Enough for some drifting, and with plenty of snowfall we could have blizzard conditions in the areas of stronger winds. Confidence not high enough for a blizzard warning yet, but we will be mentioning that possibility for the plains Sunday afternoon. There is fairly quick drying Sunday evening, though a shallow moisture layer will linger over the mountains into Monday. There's a brief window of opportunity for mountain wave enhancement for the Front Range foothills Monday morning, but the flow shouldn't be strong enough for a high wind threat. On the plains there will still be some wind mixing down Monday, but probably only limited drifting snow without much impact. Northwest flow will continue through midweek with and modest warming will be further limited by the snow cover. By Thursday, flow should go southwest and could be increasing ahead of another strong trough. This could bring a milder day as some of the low level cold air gets flushed out, especially near the mountains. There's reasonable agreement on the presence of another strong trough Friday or Saturday, but lots of variety in the details. About a quarter of the GFS ensemble members have a strong closed low moving south of us which could give us another snow like this weekends, about Friday night into Saturday. The rest either have a sharp open wave, or are focused further north. We will introduce low PoPs again on Friday, though the better chance is probably Friday night or Saturday if we do have a stronger/slower system. && .AVIATION...(For the 12Z TAFS through 12Z Sunday morning) Issued at 410 AM MST Sat Jan 20 2018 Surface low pressure developing over southeast Colorado will cause southerly winds to turn northeast around 16Z this morning. This will usher in cooler air and increase low level moisture. Low clouds with ceilings of 1000 to 3000 feet are expected to form around 03Z. Clouds will continue to lower through this evening. Eventually, freezing drizzle is expected form around 06Z with ceilings falling below 1000 feet. Freezing drizzle will change to snow between 09Z and 12Z. Snow will then persist through most of Sunday. The heaviest snow is expected to occur Sunday morning and into the early afternoon. Total snowfall for the upcoming storm through Sunday evening for the Denver airports is expected to be in the 5 to 10 inch range. && .BOU WATCHES/WARNINGS/ADVISORIES... Winter Storm Warning from midnight tonight to noon MST Sunday for COZ038>046-048>051. Winter Storm Watch Sunday afternoon for COZ038>046-048>051. Winter Storm Warning from 6 PM this evening to noon MST Sunday for COZ031-033>036. Winter Weather Advisory from 6 PM this evening to noon MST Sunday for COZ030-032. && SHORT TERM...Meier LONG TERM...Gimmestad AVIATION...Meier
Hazardous weather outlook, Jan 19, 10:51 AM MST, 18 hours 33 minutes before
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 1051 AM MST Fri Jan 19 2018 COZ030>051-201800- 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- 1051 AM MST Fri Jan 19 2018 ...Winter Storm Heading for Colorado... This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight Winds will gust as high as 65 mph over the higher elevations of the Front Range today. Gusts in the 30-45 mph range can be expected over the rest of the mountains and foothills this afternoon. The plains will see near record high temperatures in the 60s to lower 70s. There will be elevated fire danger over the Palmer Divide this afternoon with low humidities and wind gusts in the 10 to 20 mph range. .DAYS TWO THROUGH SEVEN...Saturday through Thursday A Pacific storm system will begin producing rain and snow showers over the mountains and high valleys of north central Colorado Saturday afternoon. By evening with falling temperatures, high country showers should quickly change over to snow where it may become heavy at times overnight through Sunday morning. Significant snow accumulation is possible, especially on the high mountain passes and up around the Eisenhower Tunnel. East of the mountains, rain and snow showers should first form along the Interstate 25 corridor Saturday evening, before spreading out across the plains. The rain and snow will quickly change over to all snow by midnight after passage of a cold front. Snowfall is expected to continue on the plains and over the Palmer Divide through Sunday. Gusty northerly winds may also produce areas of blowing snow during the afternoon, especially east of the I-25 corridor. Snowfall should gradually end from west to east Sunday afternoon into Sunday evening. At this time exact snowfall accumulations are uncertain, however, hazardous driving conditions will likely develop in the mountains by Saturday evening and then spread across the northeast plains late Saturday night into Sunday. Weather conditions will improve late Sunday night into Monday as the storm system moves east of the area. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today or tonight. Entrekin/Baker
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 20, 5:24 AM MST | Winter Weather Advisory | BOU | Elbert, Grand, Jackson, Lincoln, Summit | 31 hr |
Nearby
Winter Storm Warnings in Colorado, 2018Every winter storm warning in 2018
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.