Alert archive / Colorado / Winter Storm Warnings in 2021
Winter Storm Warning 5, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at Mar 20, 2021, 2:11 PM MDT for 12 counties in Colorado. It took effect at Mar 21, 2021, 12:00 PM MDT. It was in force for 22 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
- Mar 20, 2021, 2:11 PM MDT (20:11 UTC)
- In effect from
- Mar 21, 2021, 12:00 PM MDT
- Expired
- Mar 22, 2021, 10:03 AM MDT
- In force
- 22 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Arapahoe County, CO, Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 21, 4:47 PM MDT | SNOW 3 | 1 Ssw Crescent Village, CO | |
| Mar 21, 5:01 PM MDT | SNOW 3.5 | 1 Wnw Ponderosa Park, CO | |
| Mar 21, 5:39 PM MDT | SNOW 2.5 | 2 E Sunshine, CO | |
| Mar 21, 7:17 PM MDT | SNOW 5 | 3 W Castle Rock, CO | |
| Mar 21, 8:19 PM MDT | SNOW 4.1 | 3 Ssw Castle Pines, CO | |
| Mar 21, 9:04 PM MDT | SNOW 7 | 1 Wnw Ponderosa Park, CO | |
| Mar 21, 9:30 PM MDT | SNOW 4.5 | 4 Ene Nederland, CO | |
| Mar 21, 9:36 PM MDT | SNOW 5 | 5 S Manila Village, CO | |
| Mar 21, 9:48 PM MDT | SNOW 6.5 | 3 N Bailey, CO | P36. |
| Mar 21, 10:15 PM MDT | SNOW 4.1 | 2 Sw Arapahoe Park, CO | |
| Mar 21, 10:15 PM MDT | SNOW 4.1 | Se Aurora, CO | |
| Mar 21, 10:42 PM MDT | SNOW 3.9 | 1 Ese Greenwood Village, CO | |
| Mar 21, 10:52 PM MDT | SNOW 5.8 | 2 Ene Parker, CO | |
| Mar 21, 11:02 PM MDT | SNOW 6 | 2 S Parker, CO | |
| Mar 22, 3:10 AM MDT | SNOW 4.3 | 2 Ne Arvada, CO | |
| Mar 22, 3:26 AM MDT | SNOW 2.6 | 3 Ssw Boulder, CO | |
| Mar 22, 4:11 AM MDT | SNOW 8.4 | 1 Wnw Ponderosa Park, CO | |
| Mar 22, 4:33 AM MDT | SNOW 4 | 2 Nnw Golden, CO | |
| Mar 22, 5:25 AM MDT | SNOW 5.2 | 1 N Genesee, CO | |
| Mar 22, 5:45 AM MDT | SNOW 4.2 | 2 Ne Lakewood, CO | |
| Mar 22, 6:00 AM MDT | SNOW 2.8 | 3 Ssw Boulder, CO | BOULDER NWS OFFICE. |
| Mar 22, 6:01 AM MDT | SNOW 7.1 | 3 Ssw Castle Pines, CO | |
| Mar 22, 6:22 AM MDT | SNOW 5 | 3 Nne Foxfield, CO | |
| Mar 22, 6:26 AM MDT | SNOW 4.6 | 4 W Arvada, CO | |
| Mar 22, 6:30 AM MDT | SNOW 1.8 | 2 N Longmont, CO | |
| Mar 22, 6:37 AM MDT | SNOW 7.8 | 5 Ne Ponderosa Park, CO | |
| Mar 22, 6:47 AM MDT | SNOW 5 | 3 Se Aurora, CO | |
| Mar 22, 6:58 AM MDT | SNOW 7 | 4 Ne Nederland, CO | |
| Mar 22, 7:00 AM MDT | SNOW 4.9 | 1 W Wheat Ridge, CO | |
| Mar 22, 7:00 AM MDT | SNOW 5.5 | 2 Se Chatfield Reservoi, CO | |
| Mar 22, 7:00 AM MDT | SNOW 9.3 | 2 Nw Roxborough Park, CO | |
| Mar 22, 7:14 AM MDT | SNOW 7.1 | 1 W Aspen Springs, CO | |
| Mar 22, 7:25 AM MDT | SNOW 7 | 5 S Arapahoe Park, CO | |
| Mar 22, 7:27 AM MDT | SNOW 4.5 | 2 E Sunshine, CO | |
| Mar 22, 7:30 AM MDT | SNOW 3.5 | 2 Ssw Estes Park, CO | |
| Mar 22, 7:30 AM MDT | SNOW 6.5 | 4 Ese Foxfield, CO | |
| Mar 22, 7:30 AM MDT | SNOW 7.8 | Elizabeth, CO | |
| Mar 22, 7:30 AM MDT | SNOW 8 | 2 N Roxborough Park, CO | |
| Mar 22, 7:46 AM MDT | SNOW 6 | 1 E Arvada, CO | |
| Mar 22, 7:49 AM MDT | SNOW 6.5 | 1 E Ken Caryl, CO | |
| Mar 22, 7:53 AM MDT | SNOW 3.6 | 2 Nnw Louisville, CO | |
| Mar 22, 7:53 AM MDT | SNOW 6.7 | 1 Se Littleton, CO | |
| Mar 22, 7:55 AM MDT | SNOW 7.4 | 3 Nw Parker, CO | |
| Mar 22, 8:00 AM MDT | SNOW 2.7 | Niwot, CO | |
| Mar 22, 8:00 AM MDT | SNOW 4.3 | 2 N Golden, CO | |
| Mar 22, 8:00 AM MDT | SNOW 5 | 1 S Buckley Afb, CO | |
| Mar 22, 8:00 AM MDT | SNOW 5 | 2 Ne Morrison, CO | |
| Mar 22, 8:00 AM MDT | SNOW 7 | 4 N Kenosha Pass, CO | |
| Mar 22, 8:01 AM MDT | SNOW 5.8 | 1 Ne Evergreen, CO | |
| Mar 22, 8:07 AM MDT | SNOW 8.2 | 2 E Parker, CO | |
| Mar 22, 8:21 AM MDT | SNOW 10.5 | 1 Wsw Perry Park, CO | |
| Mar 22, 8:24 AM MDT | SNOW 10.7 | 3 N Bailey, CO | |
| Mar 22, 8:25 AM MDT | SNOW 8 | 2 S Parker, CO | |
| Mar 22, 8:30 AM MDT | SNOW 3.5 | Arvada, CO | |
| Mar 22, 8:30 AM MDT | SNOW 4.5 | Englewood, CO | |
| Mar 22, 8:30 AM MDT | SNOW 4.8 | 2 Sw Lone Tree, CO | |
| Mar 22, 8:41 AM MDT | SNOW 9 | 1 Wnw Ponderosa Park, CO | |
| Mar 22, 8:49 AM MDT | SNOW 8 | 5 S Manila Village, CO | |
| Mar 22, 9:00 AM MDT | SNOW 9.6 | 1 N Castle Rock, CO | |
| Mar 22, 9:04 AM MDT | SNOW 5.8 | 2 Ssw Kittredge, 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 (KDNR), launched 12:00Z, 8.2 hours before the alert went out and 186 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
- 2974 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
633 WWUS45 KBOU 202011 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 211 PM MDT Sat Mar 20 2021 ...STORM SYSTEM HEADED TOWARDS COLORADO... .A storm system will move across Colorado Sunday and Monday with snow returning to the mountains tonight, and then spreading over the plains from late Sunday afternoon and continue through Monday. The heaviest snow will fall in the mountains Sunday afternoon and night, and then the heaviest snow over the adjacent plains and Palmer Divide Sunday night and Monday morning. COZ033-034-036-210415- /O.NEW.KBOU.WS.W.0005.210321T1800Z-210322T1800Z/ 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- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Evergreen, Central City, East Slopes Mosquito Range, Indian Peaks, Georgetown, Idaho Springs, Eisenhower Tunnel, Rocky Mountain National Park, East Slopes Southern Gore Range, Mount Evans, Laramie and Medicine Bow Mountains, Bailey, Cameron Pass, Breckenridge, Kenosha Mountains, Winter Park, Williams Fork Mountains, Willow Creek Pass, Rabbit Ears Range, Westcreek, and Berthoud Pass 211 PM MDT Sat Mar 20 2021 ...WINTER STORM WARNING IN EFFECT FROM NOON SUNDAY TO NOON MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 15 inches. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, and The Southern Front Range Foothills. * WHEN...From Noon Sunday to Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Sunday afternoon commute along the I-70 mountain corridor and for the Monday morning commute. Snow covered roads will make travel hazardous. 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 && $$ COZ039>041-210415- /O.NEW.KBOU.WS.A.0002.210322T0000Z-210323T0000Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Boulder, Golden, Highlands Ranch, Castle Rock, City of Denver, Lakewood, Kiowa, Elbert, Aurora, Arvada, Littleton, Parker, Larkspur, Longmont, Fondis, Denver International Airport, and Brighton 211 PM MDT Sat Mar 20 2021 ...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 4 to 12 inches possible, heaviest amounts over Douglas and Elbert counties. * WHERE...Boulder and the western suburbs of Denver, Denver, and Castle Rock. * WHEN...From Sunday evening through Monday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Snow covered roads will make travel hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Entrekin
8 follow-up statements
825 WWUS45 KBOU 210355 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 955 PM MDT Sat Mar 20 2021 ...STORM SYSTEM HEADED TOWARDS COLORADO... .A storm system will move across Colorado Sunday and Monday with snow in the mountains tonight which spreads over the plains from late Sunday afternoon and continue through Monday. The heaviest snow will fall in the mountains Sunday afternoon and night, and then over the adjacent plains and Palmer Divide Sunday night and Monday morning. COZ033-034-036-211600- /O.CON.KBOU.WS.W.0005.210321T1800Z-210322T1800Z/ 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- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Evergreen, Central City, East Slopes Mosquito Range, Indian Peaks, Georgetown, Idaho Springs, Eisenhower Tunnel, Rocky Mountain National Park, East Slopes Southern Gore Range, Mount Evans, Laramie and Medicine Bow Mountains, Bailey, Cameron Pass, Breckenridge, Kenosha Mountains, Winter Park, Williams Fork Mountains, Willow Creek Pass, Rabbit Ears Range, Westcreek, and Berthoud Pass 955 PM MDT Sat Mar 20 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON SUNDAY TO NOON MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 15 inches. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, and The Southern Front Range Foothills. * WHEN...From Noon Sunday to Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. Snow covered roads will make travel hazardous. 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 && $$ COZ039>041-211600- /O.CON.KBOU.WS.A.0002.210322T0000Z-210323T0000Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County-Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Boulder, Golden, Highlands Ranch, Castle Rock, City of Denver, Lakewood, Kiowa, Elbert, Aurora, Arvada, Littleton, Parker, Larkspur, Longmont, Fondis, Denver International Airport, and Brighton 955 PM MDT Sat Mar 20 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 4 to 12 inches possible, heaviest amounts over Douglas and Elbert counties. * WHERE...Boulder, Golden, Denver, and Castle Rock. * WHEN...From Sunday evening through Monday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Snow covered roads will make travel hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Danielson
890 WWUS45 KBOU 210843 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 243 AM MDT Sun Mar 21 2021 ...MORE SNOW HEADED FOR COLORADO... .Snow will become more widespread and heavier again this afternoon and evening across the Front Range of Colorado, and also spread eastward onto the adjacent plains and Palmer Divide. The heaviest snow will fall in the mountains and foothills starting late this afternoon and evening, and then over the adjacent plains and Palmer Divide tonight, possibly lasting into Monday morning. Travelers should be prepared for hazardous road conditions and longer commute times as the heavier snow develops. COZ033-211645- /O.CAN.KBOU.WS.W.0005.210321T1800Z-210322T1800Z/ /O.NEW.KBOU.WW.Y.0020.210321T2000Z-210322T1200Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Laramie and Medicine Bow Mountains, Rabbit Ears Range, Cameron Pass, Rocky Mountain National Park, and Willow Creek Pass 243 AM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 AM MDT MONDAY... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Snow expected. Total snow accumulations of 5 to 10 inches. * WHERE...Rocky Mountain National Park and the Medicine Bow Range. * WHEN...From 2 PM this afternoon to 6 AM MDT Monday. * IMPACTS...Travel could be hazardous with slick and snow covered roads. 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 && $$ COZ041-211645- /O.UPG.KBOU.WS.A.0002.210322T0000Z-210323T0000Z/ /O.EXB.KBOU.WS.W.0005.210322T0000Z-210322T1800Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Elbert, Fondis, Kiowa, Castle Rock, and Larkspur 243 AM MDT Sun Mar 21 2021 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 10 inches. * WHERE...Castle Rock. * WHEN...From 6 PM this evening to Noon MDT Monday. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the Monday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip. org && $$ COZ034-036-211645- /O.EXT.KBOU.WS.W.0005.210321T2000Z-210322T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Evergreen, Georgetown, Indian Peaks, Idaho Springs, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, Central City, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Bailey, Kenosha Mountains, Westcreek, and Berthoud Pass 243 AM MDT Sun Mar 21 2021 ...WINTER STORM WARNING NOW IN EFFECT FROM 2 PM THIS AFTERNOON TO NOON MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 13 inches, heaviest in the foothills and east of the Eisenhower Tunnel. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, and The Southern Front Range Foothills. * WHEN...From 2 PM this afternoon to Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Sunday afternoon commute along the I-70 mountain corridor and the Monday morning 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 && $$ COZ039-040-211645- /O.UPG.KBOU.WS.A.0002.210322T0000Z-210323T0000Z/ /O.NEW.KBOU.WW.Y.0020.210322T0000Z-210322T1800Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Boulder, Golden, Highlands Ranch, City of Denver, Lakewood, Aurora, Arvada, Littleton, Parker, Longmont, Denver International Airport, and Brighton 243 AM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 6 inches. * WHERE...Boulder and the western suburbs of Denver, and Denver. * WHEN...From 6 PM this evening to Noon MDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ035-211645- /O.NEW.KBOU.WW.Y.0020.210321T2000Z-210322T1200Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet- Including the cities of Red Feather Lakes, Glendevey, Nederland, and Estes Park 243 AM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 AM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 10 inches, heaviest amounts in the foothills of Boulder County. * WHERE...The Northern Front Range Foothills. * WHEN...From 2 PM this afternoon to 6 AM MDT Monday. * IMPACTS...Travel could be hazardous with slick and snow covered roads. 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 && $$ COZ037-211645- /O.NEW.KBOU.WW.Y.0020.210322T0000Z-210322T1800Z/ Central and Southeast Park County- Including the cities of Fairplay, South Park, Hartsel, and Lake George 243 AM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 8 inches. * WHERE...South Park. * WHEN...From 6 PM this evening to Noon MDT Monday. * IMPACTS...Travel could be hazardous with slick and snow covered roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ For more information from the National Weather Service, visit https://weather.gov/bou Barjenbruch
212 WWUS45 KBOU 211630 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1030 AM MDT Sun Mar 21 2021 ...MORE SNOW HEADED FOR COLORADO... .Snow will become more widespread and heavier again this afternoon and evening across the Front Range of Colorado, and also spread eastward onto the adjacent plains and Palmer Divide. The heaviest snow will fall in the mountains and foothills starting late this afternoon and evening, and then over the adjacent plains and Palmer Divide tonight, possibly lasting into Monday morning. Travelers should be prepared for hazardous road conditions and longer commute times as the heavier snow develops. COZ034-036-220400- /O.CON.KBOU.WS.W.0005.210321T2000Z-210322T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Evergreen, Georgetown, Indian Peaks, Idaho Springs, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, Central City, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Bailey, Kenosha Mountains, Westcreek, and Berthoud Pass 1030 AM MDT Sun Mar 21 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO NOON MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 13 inches, heaviest in the foothills and east of the Eisenhower Tunnel. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, and The Southern Front Range Foothills. * WHEN...From 2 PM this afternoon to Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. Snow covered roads will make travel hazardous. 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 && $$ COZ041-220400- /O.CON.KBOU.WS.W.0005.210322T0000Z-210322T1800Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Elbert, Fondis, Kiowa, Castle Rock, and Larkspur 1030 AM MDT Sun Mar 21 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 10 inches. * WHERE...Castle Rock. * WHEN...From 6 PM this evening to Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip. org && $$ COZ033-035-220400- /O.CON.KBOU.WW.Y.0020.210321T2000Z-210322T1200Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Including the cities of Glendevey, Nederland, Rocky Mountain National Park, Laramie and Medicine Bow Mountains, Red Feather Lakes, Cameron Pass, Estes Park, Willow Creek Pass, and Rabbit Ears Range 1030 AM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 AM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 10 inches, heaviest amounts in the foothills of Boulder County. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, and The Northern Front Range Foothills. * WHEN...From 2 PM this afternoon to 6 AM MDT 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 && $$ COZ037-220400- /O.CON.KBOU.WW.Y.0020.210322T0000Z-210322T1800Z/ Central and Southeast Park County- Including the cities of Fairplay, South Park, Hartsel, and Lake George 1030 AM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 8 inches. * WHERE...South Park. * WHEN...From 6 PM this evening to Noon MDT Monday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ039-040-220400- /O.CON.KBOU.WW.Y.0020.210322T0000Z-210322T1800Z/ 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- Including the cities of Boulder, Golden, Highlands Ranch, City of Denver, Lakewood, Aurora, Arvada, Littleton, Parker, Longmont, Denver International Airport, and Brighton 1030 AM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 6 inches. * WHERE...Boulder and the western suburbs of Denver, and Denver. * WHEN...From 6 PM this evening to Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou Hanson
637 WWUS45 KBOU 212250 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 450 PM MDT Sun Mar 21 2021 ...MORE SNOW FOR COLORADO... .Rapidly changes conditions have been occurring late this afternoon, with narrow bands of heavier snow over the Front Range Foothills, adjacent plains and Palmer Divide. Still, roadways are mostly wet, with some slush and icy spots further south across Douglas and Elbert counties. Snowfall in the mountains has mainly been light with wet roads. Snow will become more widespread this evening across the Front Range of Colorado and adjacent plains with some icy, slushy, and snow packed conditons developing on roadways and elevated surfaces overnight. Travelers should be prepared for hazardous road conditions and longer commute times as the heavier snow develops. COZ034-036-221215- /O.CON.KBOU.WS.W.0005.000000T0000Z-210322T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Evergreen, Georgetown, Indian Peaks, Idaho Springs, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, Central City, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Bailey, Kenosha Mountains, Westcreek, and Berthoud Pass 450 PM MDT Sun Mar 21 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT MONDAY... * WHAT...Snow expected, possibly heavy at times. Total snow accumulations of 4 to 12 inches, heaviest in the foothills and east of the Eisenhower Tunnel. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, and The Southern Front Range Foothills. * WHEN...Until Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. Snow covered roads will make travel hazardous. 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 && $$ COZ041-221215- /O.CON.KBOU.WS.W.0005.210322T0000Z-210322T1800Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Elbert, Fondis, Kiowa, Castle Rock, and Larkspur 450 PM MDT Sun Mar 21 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 12 inches. * WHERE...Castle Rock. * WHEN...Until Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning 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 && $$ COZ033-035-221200- /O.CON.KBOU.WW.Y.0020.000000T0000Z-210322T1200Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Including the cities of Glendevey, Nederland, Rocky Mountain National Park, Laramie and Medicine Bow Mountains, Red Feather Lakes, Cameron Pass, Estes Park, Willow Creek Pass, and Rabbit Ears Range 450 PM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 8 inches, heaviest amounts in the foothills of Boulder County. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, and The Northern Front Range Foothills. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ037-221215- /O.CON.KBOU.WW.Y.0020.210322T0000Z-210322T1800Z/ Central and Southeast Park County- Including the cities of Fairplay, South Park, Hartsel, and Lake George 450 PM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT MONDAY... * WHAT...Snow. Total snow accumulations of 4 to 8 inches. * WHERE...South Park. * WHEN...Until Noon MDT 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 && $$ COZ039-040-221215- /O.CON.KBOU.WW.Y.0020.210322T0000Z-210322T1800Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Boulder, Golden, Highlands Ranch, City of Denver, Lakewood, Aurora, Arvada, Littleton, Parker, Longmont, Denver International Airport, and Brighton 450 PM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT MONDAY... * WHAT...Snow becoming widespread this evening. Total snow accumulations of 3 to 6 inches. * WHERE...Boulder and the western suburbs of Denver, and Denver. * WHEN...Until Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ For more information from the National Weather Service, visit https://weather.gov/bou Entrekin
668 WWUS45 KBOU 212305 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 505 PM MDT Sun Mar 21 2021 ...MORE SNOW FOR COLORADO... .Rapidly changing conditions have been occurring late this afternoon, with narrow bands of heavier snow over the Front Range Foothills, adjacent plains and Palmer Divide. Still, roadways are mostly wet, with some slush and icy spots further south across Douglas and Elbert counties. Snowfall in the mountains has mainly been light with wet roads. Snow will become more widespread this evening across the Front Range of Colorado and adjacent plains with some icy, slushy, and snow packed conditons developing on roadways and elevated surfaces overnight. Travelers should be prepared for hazardous road conditions and longer commute times as the heavier snow develops. COZ034-036-220715- /O.CON.KBOU.WS.W.0005.000000T0000Z-210322T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Evergreen, Georgetown, Indian Peaks, Idaho Springs, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, Central City, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Bailey, Kenosha Mountains, Westcreek, and Berthoud Pass 505 PM MDT Sun Mar 21 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT MONDAY... * WHAT...Snow expected, possibly heavy at times. Total snow accumulations of 4 to 12 inches, heaviest in the foothills and east of the Eisenhower Tunnel. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, and The Southern Front Range Foothills. * WHEN...Until Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. Snow covered roads will make travel hazardous. 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 && $$ COZ041-220715- /O.CON.KBOU.WS.W.0005.210322T0000Z-210322T1800Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Elbert, Fondis, Kiowa, Castle Rock, and Larkspur 505 PM MDT Sun Mar 21 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 12 inches. * WHERE...Castle Rock. * WHEN...Until Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip. org && $$ COZ033-035-220715- /O.CON.KBOU.WW.Y.0020.000000T0000Z-210322T1200Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Including the cities of Glendevey, Nederland, Rocky Mountain National Park, Laramie and Medicine Bow Mountains, Red Feather Lakes, Cameron Pass, Estes Park, Willow Creek Pass, and Rabbit Ears Range 505 PM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 8 inches, heaviest amounts in the foothills of Boulder County. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, and The Northern Front Range Foothills. * WHEN...Until 6 AM MDT Monday. * 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 && $$ COZ037-220715- /O.CON.KBOU.WW.Y.0020.210322T0000Z-210322T1800Z/ Central and Southeast Park County- Including the cities of Fairplay, South Park, Hartsel, and Lake George 505 PM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT MONDAY... * WHAT...Snow. Total snow accumulations of 4 to 8 inches. * WHERE...South Park. * WHEN...Until Noon MDT Monday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ039-040-220715- /O.CON.KBOU.WW.Y.0020.210322T0000Z-210322T1800Z/ 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- Including the cities of Boulder, Golden, Highlands Ranch, City of Denver, Lakewood, Aurora, Arvada, Littleton, Parker, Longmont, Denver International Airport, and Brighton 505 PM MDT Sun Mar 21 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT MONDAY... * WHAT...Snow becoming widespread this evening. Total snow accumulations of 3 to 6 inches. * WHERE...Boulder and the western suburbs of Denver, and Denver. * WHEN...Until Noon MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou Entrekin
788 WWUS45 KBOU 220637 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1237 AM MDT Mon Mar 22 2021 ...MORE SNOW FOR COLORADO... .Snow will continue overnight, and will be heavy at times along and south of the I-70 Corridor from the Eisenhower Tunnel to Denver and Limon. Lighter snowfall will occur north of I-70, with nearly dry conditions near the Wyoming and Nebraska border. Snow intensity will decrease by the Monday morning commute, but some slush and snow covered roads can be expected, especially on less traveled thoroughfares. COZ034-036-221445- /O.CON.KBOU.WS.W.0005.000000T0000Z-210322T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Evergreen, Georgetown, Indian Peaks, Idaho Springs, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, Central City, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Bailey, Kenosha Mountains, Westcreek, and Berthoud Pass 1237 AM MDT Mon Mar 22 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Snow expected, possibly heavy at times. Total snow accumulations of 4 to 12 inches, heaviest in the foothills and east of the Eisenhower Tunnel. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, and The Southern Front Range Foothills. * WHEN...Until Noon MDT today. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday morning commute. Snow covered roads will make travel hazardous. 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 && $$ COZ041-221445- /O.CON.KBOU.WS.W.0005.000000T0000Z-210322T1800Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Elbert, Fondis, Kiowa, Castle Rock, and Larkspur 1237 AM MDT Mon Mar 22 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Heavy snow expected overnight, but decreasing to light snow by Monday morning. Total snow accumulations of 6 to 12 inches. * WHERE...Castle Rock. * WHEN...Until Noon MDT today. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning 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 && $$ COZ033-035-221200- /O.CON.KBOU.WW.Y.0020.000000T0000Z-210322T1200Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Including the cities of Glendevey, Nederland, Rocky Mountain National Park, Laramie and Medicine Bow Mountains, Red Feather Lakes, Cameron Pass, Estes Park, Willow Creek Pass, and Rabbit Ears Range 1237 AM MDT Mon Mar 22 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT EARLY THIS MORNING... * WHAT...Snow expected. Total snow accumulations of 3 to 8 inches, heaviest amounts in the foothills of Boulder County. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, and The Northern Front Range Foothills. * WHEN...Until 6 AM MDT early this morning. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ037-221445- /O.CON.KBOU.WW.Y.0020.000000T0000Z-210322T1800Z/ Central and Southeast Park County- Including the cities of Fairplay, South Park, Hartsel, and Lake George 1237 AM MDT Mon Mar 22 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Snow, heavy at times overnight. Total snow accumulations of 4 to 8 inches. * WHERE...South Park. * WHEN...Until Noon MDT today. * 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 && $$ COZ039-040-221445- /O.CON.KBOU.WW.Y.0020.000000T0000Z-210322T1800Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Boulder, Golden, Highlands Ranch, City of Denver, Lakewood, Aurora, Arvada, Littleton, Parker, Longmont, Denver International Airport, and Brighton 1237 AM MDT Mon Mar 22 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Snow ongoing. Total snow accumulations of 3 to 6 inches, with locally heavier amounts possible over the southeastern sections of Denver. * WHERE...Boulder and the western suburbs of Denver, and Denver. * WHEN...Until Noon MDT today. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ For more information from the National Weather Service, visit https://weather.gov/bou Barjenbruch
422 WWUS45 KBOU 221139 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 539 AM MDT Mon Mar 22 2021 ...SNOW WINDING DOWN... .Snow will decrease through the morning and come to an end in most areas by noon. Additional accumulation will be an inch or less in most areas, except up to 2 inches toward Limon and possibly in a few mountain spots. Early morning travelers should be alert for slushy and slick roads, especially in areas that saw more significant accumulations last night generally along and south of the Interstate 70 Corridor. COZ033-035-221245- /O.EXP.KBOU.WW.Y.0020.000000T0000Z-210322T1200Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Including the cities of Glendevey, Nederland, Rocky Mountain National Park, Laramie and Medicine Bow Mountains, Red Feather Lakes, Cameron Pass, Estes Park, Willow Creek Pass, and Rabbit Ears Range 539 AM MDT Mon Mar 22 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MDT EARLY THIS MORNING... Only scattered areas of light snow will occur until mid morning, with additional accumulation less than 1 inch. $$ COZ034-036-221800- /O.CON.KBOU.WS.W.0005.000000T0000Z-210322T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Evergreen, Georgetown, Indian Peaks, Idaho Springs, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, Central City, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Bailey, Kenosha Mountains, Westcreek, and Berthoud Pass 539 AM MDT Mon Mar 22 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Snow ongoing. Additional snow accumulations around 1 inch. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, and The Southern Front Range Foothills. * WHEN...Until Noon MDT today. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip. org && $$ COZ041-221800- /O.CON.KBOU.WS.W.0005.000000T0000Z-210322T1800Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Elbert, Fondis, Kiowa, Castle Rock, and Larkspur 539 AM MDT Mon Mar 22 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Snow ongoing. Additional snow accumulations up to one inch. * WHERE...Castle Rock. * WHEN...Until Noon MDT today. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning 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 && $$ COZ037-221800- /O.CON.KBOU.WW.Y.0020.000000T0000Z-210322T1800Z/ Central and Southeast Park County- Including the cities of Fairplay, South Park, Hartsel, and Lake George 539 AM MDT Mon Mar 22 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Snow ongoing. Additional snow accumulations up to one inch. * WHERE...South Park. * WHEN...Until Noon MDT today. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ039-040-221800- /O.CON.KBOU.WW.Y.0020.000000T0000Z-210322T1800Z/ 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- Including the cities of Boulder, Golden, Highlands Ranch, City of Denver, Lakewood, Aurora, Arvada, Littleton, Parker, Longmont, Denver International Airport, and Brighton 539 AM MDT Mon Mar 22 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Light snow tapering off and ending this morning. Additional snow accumulations less than one inch. * WHERE...Boulder and the western suburbs of Denver, and Denver. * WHEN...Until Noon MDT today. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou Barjenbruch
590 WWUS45 KBOU 221603 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1003 AM MDT Mon Mar 22 2021 COZ034-036-041-221715- /O.CAN.KBOU.WS.W.0005.000000T0000Z-210322T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet-Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Evergreen, Georgetown, Larkspur, Castle Rock, Indian Peaks, Elbert, Idaho Springs, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, Central City, Kiowa, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Bailey, Kenosha Mountains, Westcreek, Berthoud Pass, and Fondis 1003 AM MDT Mon Mar 22 2021 ...WINTER STORM WARNING IS CANCELLED... Snow has decreased or ended this morning. Areas in Elbert county could still see additional accumulations of less than an inch, but paved roads are no longer slushy. Snowfall since yesterday afternoon ranged from 5 to 11 inches. $$ COZ037-039-040-221715- /O.CAN.KBOU.WW.Y.0020.000000T0000Z-210322T1800Z/ Central and Southeast Park 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- Including the cities of Boulder, Golden, Highlands Ranch, Lakewood, Hartsel, City of Denver, Aurora, Arvada, Fairplay, Littleton, Parker, Lake George, Longmont, Brighton, Denver International Airport, and South Park 1003 AM MDT Mon Mar 22 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow has diminished to flurries. A few light snow showers are still possible this afternoon, but little or no accumulation is expected. $$ For more information from the National Weather Service, visit https://weather.gov/bou Gimmestad
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 6:25 AM MDT | Special Weather Statement | BOU | Weld | 65 min |
| Mar 20, 2:11 PM MDT | Winter Storm Watch | BOU | Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 2 more | 13 hr |
Nearby
Winter Storm Warnings in Colorado, 2021Every winter storm warning in 2021
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.