Alert archive / Colorado / Winter Storm Warnings in 2021
Winter Storm Warning 8, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at May 2, 2021, 3:42 AM MDT for 9 counties in Colorado. It took effect at May 2, 2021, 6:00 PM MDT. It was in force for 20 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
- May 2, 2021, 3:42 AM MDT (09:42 UTC)
- In effect from
- May 2, 2021, 6:00 PM MDT
- Expired
- May 3, 2021, 1:48 PM MDT
- In force
- 20 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 102 km from the middle of the area, began a volume at 09:40 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 |
|---|---|---|---|
| May 3, 4:46 AM MDT | SNOW 4 | 1 W Aspen Springs, CO | |
| May 3, 5:00 AM MDT | SNOW 3 | 4 N Floyd Hill, CO | COCORAHS STATION CO-GL-34 FLOYD HILL 3.7 N. |
| May 3, 6:00 AM MDT | SNOW 0.5 | 1 Sw Kittredge, CO | CO-OP OBSERVER STATION EVGC2 1.2 SW KITTREDGE. |
| May 3, 6:00 AM MDT | SNOW 4.2 | 3 Sse Silver Plume, CO | CO-OP OBSERVER STATION GCRC2 GEORGETOWN 4 S. |
| May 3, 6:00 AM MDT | SNOW 6.5 | 2 Ne Rollinsville, CO | COCORAHS STATION CO-BO-378 PINECLIFFE 2.5 WNW. |
| May 3, 6:30 AM MDT | SNOW 5.5 | 4 Ene Nederland, CO | |
| May 3, 6:44 AM MDT | SNOW 4 | 1 N Genesee, CO | |
| May 3, 6:50 AM MDT | SNOW 5.3 | 3 Wnw Aspen Park, CO | COCORAHS STATION CO-JF-523 CONIFER 4.1 NW. |
| May 3, 7:00 AM MDT | SNOW 0.3 | 3 Nnw Parshall, CO | COCORAHS STATION CO-GR-52 PARSHALL 3.0 NNW. |
| May 3, 7:00 AM MDT | SNOW 0.4 | 1 Nw Pinewood Springs, CO | COCORAHS STATION CO-LR-1019 ESTES PARK 10.5 SE. |
| May 3, 7:00 AM MDT | SNOW 0.5 | Dillon, CO | MESONET STATION DLLC2 DILLON. |
| May 3, 7:00 AM MDT | SNOW 0.7 | 2 N Heeney, CO | COCORAHS STATION CO-SU-35 SILVERTHORNE 21 NW. |
| May 3, 7:00 AM MDT | SNOW 0.8 | 2 Ssw Elkdale, CO | COCORAHS STATION CO-GR-68 TABERNASH 2.7 NW. |
| May 3, 7:00 AM MDT | SNOW 1 | 3 E Buckhorn Mountain, CO | COCORAHS STATION CO-LR-1002 BELLVUE 5.0 W. |
| May 3, 7:00 AM MDT | SNOW 1 | 3 Nnw Horsetooth Mounta, CO | COCORAHS STATION CO-LR-683 HORSETOOTH MOUNTAIN 3.2 NNW. |
| May 3, 7:00 AM MDT | SNOW 1 | 4 Ene Red Feather Lakes, CO | COCORAHS STATION CO-LR-815 RED FEATHER LAKES 3.8 ENE. |
| May 3, 7:00 AM MDT | SNOW 1.2 | 2 E Crisman, CO | COCORAHS STATION CO-BO-159 BOULDER 3.6 WNW. |
| May 3, 7:00 AM MDT | SNOW 1.5 | Frisco, CO | COCORAHS STATION CO-SU-4 FRISCO 0.5 N. |
| May 3, 7:00 AM MDT | SNOW 1.8 | 2 S Estes Park, CO | COCORAHS STATION CO-LR-767 ESTES PARK 1.8 S. |
| May 3, 7:00 AM MDT | SNOW 1.8 | 2 Wnw Estes Park, CO | COCORAHS STATION CO-LR-1133 ESTES PARK 1.7 WNW. |
| May 3, 7:00 AM MDT | SNOW 2 | 4 Sw Grand Lake, CO | COCORAHS STATION CO-GR-78 GRAND LAKE 3.7 SW. |
| May 3, 7:00 AM MDT | SNOW 2.3 | 1 Sse Wah Keeney Park, CO | COCORAHS STATION CO-JF-424 EVERGREEN 1.3 NNE. |
| May 3, 7:00 AM MDT | SNOW 2.3 | 4 W Pinewood Springs, CO | COCORAHS STATION CO-LR-1072 LYONS 8.9 WNW. |
| May 3, 7:00 AM MDT | SNOW 2.3 | Wah Keeney Park, CO | COCORAHS STATION CO-JF-484 EVERGREEN 1.8 N. |
| May 3, 7:00 AM MDT | SNOW 2.4 | 2 Se Wilkerson Pass, CO | COCORAHS STATION CO-PK-39 LAKE GEORGE 7.2 WNW. |
| May 3, 7:00 AM MDT | SNOW 2.4 | 2 Ssw Silverthorne, CO | COCORAHS STATION CO-SU-6 SILVERTHORNE 2.1 WSW. |
| May 3, 7:00 AM MDT | SNOW 2.5 | 7 W Rustic, CO | CO-OP OBSERVER STATION RUTC2 7.4 W RUSTIC. |
| May 3, 7:00 AM MDT | SNOW 3 | 1 Ene 11-Mile Canyon Re, CO | CO-OP OBSERVER STATION LGRC2 0.7 E 11-MILE CANYON RESERVOIR. |
| May 3, 7:00 AM MDT | SNOW 3 | 1 Ne Brookvale, CO | COCORAHS STATION CO-CC-2 EVERGREEN 5 W. |
| May 3, 7:00 AM MDT | SNOW 3 | 2 Sw Golden, CO | COCORAHS STATION CO-JF-497 GOLDEN 1.6 SW. |
| May 3, 7:00 AM MDT | SNOW 3.2 | 2 Ssw Brookvale, CO | COCORAHS STATION CO-CC-1 EVERGREEN 6.5 WSW. |
| May 3, 7:00 AM MDT | SNOW 3.5 | 1 Sse Breckenridge, CO | COCORAHS STATION CO-SU-73 BRECKENRIDGE 1.2 SSE. |
| May 3, 7:00 AM MDT | SNOW 3.5 | 6 Nnw Silverthorne, CO | COCORAHS STATION CO-SU-8 SILVERTHORNE 7.4 NW. |
| May 3, 7:00 AM MDT | SNOW 3.6 | 2 Ssw Kittredge, CO | COCORAHS STATION CO-JF-395 EVERGREEN 2.0 ESE. |
| May 3, 7:00 AM MDT | SNOW 4 | 10 Nw Kremmling, CO | COCORAHS STATION CO-GR-46 KREMMLING 10.0 NW. |
| May 3, 7:00 AM MDT | SNOW 4 | 1 Sw Tiny Town, CO | COCORAHS STATION CO-JF-537 MORRISON 5.4 SSW. |
| May 3, 7:00 AM MDT | SNOW 4 | 3 Nne Aspen Park, CO | COCORAHS STATION CO-JF-157 EVERGREEN 4.2 SSE. |
| May 3, 7:00 AM MDT | SNOW 4.2 | 2 Nne Shaffers Crossing, CO | COCORAHS STATION CO-JF-53 CONIFER 3.2 SW. |
| May 3, 7:00 AM MDT | SNOW 4.5 | 2 Sse Kittredge, CO | COCORAHS STATION CO-JF-128 KITTREDGE 2.5 SSE. |
| May 3, 7:00 AM MDT | SNOW 4.8 | 2 Wsw Conifer, CO | COCORAHS STATION CO-JF-78 CONIFER 2.1 WSW. |
| May 3, 7:00 AM MDT | SNOW 5 | 3 Ssw Crescent Village, CO | COCORAHS STATION CO-JF-425 GOLDEN 11.8 NW. |
| May 3, 7:00 AM MDT | SNOW 5.2 | Nederland, CO | COCORAHS STATION CO-BO-322 NEDERLAND 0.4 WNW. |
| May 3, 7:00 AM MDT | SNOW 5.4 | 1 Ssw Rollinsville, CO | COCORAHS STATION CO-GL-17 ROLLINSVILLE 1.1 SSW. |
| May 3, 7:00 AM MDT | SNOW 5.7 | Nederland, CO | COCORAHS STATION CO-BO-92 NEDERLAND .47 ESE. |
| May 3, 7:00 AM MDT | SNOW 6 | 3 Nne Pinecliffe, CO | COCORAHS STATION CO-BO-57 NEDERLAND 5.8 E. |
| May 3, 7:00 AM MDT | SNOW 6 | 4 Nne Floyd Hill, CO | COCORAHS STATION CO-JF-267 GOLDEN 9.4 WNW. |
| May 3, 7:00 AM MDT | SNOW 6.2 | 2 Sse Blue Valley, CO | COCORAHS STATION CO-CC-7 IDAHO SPRINGS 4.7 SSE. |
| May 3, 7:00 AM MDT | SNOW 6.5 | Aspen Springs, CO | CO-OP OBSERVER STATION ASIC2 ASPEN SPRINGS. |
| May 3, 7:00 AM MDT | SNOW 7.2 | 3 W Jamestown, CO | COCORAHS STATION CO-BO-202 WARD 4.6 NE. |
| May 3, 7:04 AM MDT | SNOW 3 | Antero Reservoir, CO | MESONET STATION ANTC2 ANTERO RESERVOIR. |
| May 3, 7:10 AM MDT | SNOW 1 | 7 E Virginia Dale, CO | CO-OP OBSERVER STATION VDAC2 6.9 E VIRGINIA DALE. |
| May 3, 7:15 AM MDT | SNOW 4 | 3 N Drake, CO | COCORAHS STATION CO-LR-1257 DRAKE 3.2 NNW. |
| May 3, 7:16 AM MDT | SNOW 1.7 | 1 N Sunshine, CO | COCORAHS STATION CO-BO-343 JAMESTOWN 2.5 SSE. |
| May 3, 7:20 AM MDT | SNOW 7.7 | 4 Sse Pinecliffe, CO | COCORAHS STATION CO-JF-331 GOLDEN 12.5 NW. |
| May 3, 7:30 AM MDT | SNOW 1 | 1 Nnw Cheesman Reservoi, CO | CO-OP OBSERVER STATION CHEC2 SEDALIA 22 SW. |
| May 3, 7:30 AM MDT | SNOW 1 | 1 Wnw Crescent Village, CO | CO-OP OBSERVER STATION GRRC2 1.2 W CRESCENT VILLAGE. |
| May 3, 7:30 AM MDT | SNOW 1.6 | 1 Nnw Grant, CO | CO-OP OBSERVER STATION GRTC2 GRANT 1 W. |
| May 3, 7:30 AM MDT | SNOW 3.6 | 4 Wnw Kassler, CO | COCORAHS STATION CO-JF-530 KEN CARYL 5.2 SSW. |
| May 3, 7:30 AM MDT | SNOW 3.7 | 4 Se Evergreen, CO | COCORAHS STATION CO-JF-403 EVERGREEN 3.5 SE. |
| May 3, 8:00 AM MDT | SNOW 1 | 1 Ssw Georgetown, CO | CO-OP OBSERVER STATION GEOC2 0.7 S GEORGETOWN. |
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 00:00Z, 9.7 hours before the alert went out and 213 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
- 89 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 3881 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
989 WWUS45 KBOU 020942 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 342 AM MDT Sun May 2 2021 COZ033-034-022200- /O.UPG.KBOU.WS.A.0005.210503T0000Z-210504T0600Z/ /O.NEW.KBOU.WS.W.0008.210503T0000Z-210504T0600Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of East Slopes Mosquito Range, Indian Peaks, Eisenhower Tunnel, Rocky Mountain National Park, East Slopes Southern Gore Range, Mount Evans, Laramie and Medicine Bow Mountains, Cameron Pass, Breckenridge, Kenosha Mountains, Winter Park, Williams Fork Mountains, Willow Creek Pass, Rabbit Ears Range, and Berthoud Pass 342 AM MDT Sun May 2 2021 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT MDT MONDAY NIGHT... * WHAT...Heavy snow expected. Total snow accumulations of 7 to 14 inches possible, heaviest amounts along and just east of the Continental Divide. Lower amounts expected west of the Divide. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 6 PM this evening to Midnight MDT Monday Night. * IMPACTS...Roads will likely become slick and hazardous. Travel may become very difficult due to heavy snowfall on roadways. 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou Entrekin
4 follow-up statements
652 WWUS45 KBOU 022019 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 219 PM MDT Sun May 2 2021 COZ033-034-030430- /O.CON.KBOU.WS.W.0008.210503T0000Z-210504T0600Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of East Slopes Mosquito Range, Indian Peaks, Eisenhower Tunnel, Rocky Mountain National Park, East Slopes Southern Gore Range, Mount Evans, Laramie and Medicine Bow Mountains, Cameron Pass, Breckenridge, Kenosha Mountains, Winter Park, Williams Fork Mountains, Willow Creek Pass, Rabbit Ears Range, and Berthoud Pass 219 PM MDT Sun May 2 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO MIDNIGHT MDT MONDAY NIGHT... * WHAT...Heavy snow expected. Total snow accumulations of 7 to 14 inches possible, heaviest amounts along and just east of the Continental Divide. Lower amounts expected west of the Divide. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 6 PM this evening to Midnight MDT Monday Night. * IMPACTS...Roads will likely become slick and hazardous. Travel may become very difficult to impossible due to heavy snowfall on roadways. Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip. org && $$ COZ031-030430- /O.NEW.KBOU.WW.Y.0028.210503T0000Z-210504T0000Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 219 PM MDT Sun May 2 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 6 to 12 inches, heaviest on the Park Range with lower amounts for the Gore Range and below 9000 feet. * WHERE...The Park Range above 9000 feet. Rabbit Ears Pass. * WHEN...From 6 PM this evening to 6 PM 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou Direnzo
081 WWUS45 KBOU 030051 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 651 PM MDT Sun May 2 2021 COZ033-034-031100- /O.CON.KBOU.WS.W.0008.000000T0000Z-210504T0600Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of East Slopes Mosquito Range, Indian Peaks, Eisenhower Tunnel, Rocky Mountain National Park, East Slopes Southern Gore Range, Mount Evans, Laramie and Medicine Bow Mountains, Cameron Pass, Breckenridge, Kenosha Mountains, Winter Park, Williams Fork Mountains, Willow Creek Pass, Rabbit Ears Range, and Berthoud Pass 651 PM MDT Sun May 2 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT MONDAY NIGHT... * WHAT...Heavy snow expected. Total snow accumulations of 7 to 14 inches possible, heaviest amounts along and just east of the Continental Divide. Lower amounts expected west of the Divide. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until Midnight MDT Monday Night. * IMPACTS...Roads will likely become slick and hazardous. Travel may become very difficult to impossible due to heavy snowfall on roadways. Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip. org && $$ COZ035-036-031100- /O.EXB.KBOU.WW.Y.0028.210503T0600Z-210504T0000Z/ 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- Including the cities of Evergreen, Georgetown, Glendevey, Nederland, Westcreek, Central City, Red Feather Lakes, Idaho Springs, Estes Park, and Bailey 651 PM MDT Sun May 2 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations from 4 to 10 inches, mainly 7500 feet. * WHERE...The Northern Front Range Foothills, and The Southern Front Range Foothills. * WHEN...From Midnight tonight to 6 PM MDT Monday. * IMPACTS...Roads will likely become slick and hazardous especially late tonight through Monday morning. 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 && $$ COZ031-031100- /O.CON.KBOU.WW.Y.0028.000000T0000Z-210504T0000Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 651 PM MDT Sun May 2 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 6 to 12 inches, heaviest on the Park Range with lower amounts for the Gore Range and below 9000 feet. * WHERE...Rabbit Ears Pass. * WHEN...Until 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ For more information from the National Weather Service, visit https://weather.gov/bou Cooper
213 WWUS45 KBOU 030955 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 355 AM MDT Mon May 3 2021 COZ033-034-031800- /O.CON.KBOU.WS.W.0008.000000T0000Z-210504T0600Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of East Slopes Mosquito Range, Indian Peaks, Eisenhower Tunnel, Rocky Mountain National Park, East Slopes Southern Gore Range, Mount Evans, Laramie and Medicine Bow Mountains, Cameron Pass, Breckenridge, Kenosha Mountains, Winter Park, Williams Fork Mountains, Willow Creek Pass, Rabbit Ears Range, and Berthoud Pass 355 AM MDT Mon May 3 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * WHAT...Heavy snow expected. Additional snow accumulations of 3 to 8 inches possible, heaviest amounts along and just east of the Continental Divide. Lower amounts expected west of the Divide. The snow will decrease during the evening hours. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until Midnight MDT tonight. * IMPACTS...Roads will likely be slick and hazardous with icy and snowy conditions. Travel may become very difficult on the high mountain passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip. org && $$ COZ031-031800- /O.CON.KBOU.WW.Y.0028.000000T0000Z-210504T0000Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 355 AM MDT Mon May 3 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow expected. Additional snowfall of 2 to 5 inches, heaviest on the Park Range with lower amounts for the Gore Range and below 9000 feet. * WHERE...Rabbit Ears Pass. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ035-036-031800- /O.CON.KBOU.WW.Y.0028.000000T0000Z-210504T0000Z/ 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- Including the cities of Evergreen, Georgetown, Glendevey, Nederland, Westcreek, Central City, Red Feather Lakes, Idaho Springs, Estes Park, and Bailey 355 AM MDT Mon May 3 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow expected. Additional snow accumulations from 3 to 6 inches, heaviest above 7500 feet. * WHERE...The Northern Front Range Foothills, and The Southern Front Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads will likely become slick and hazardous. 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou Entrekin
642 WWUS45 KBOU 031948 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 148 PM MDT Mon May 3 2021 COZ033-034-032100- /O.CAN.KBOU.WS.W.0008.000000T0000Z-210504T0600Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of East Slopes Mosquito Range, Indian Peaks, Eisenhower Tunnel, Rocky Mountain National Park, East Slopes Southern Gore Range, Mount Evans, Laramie and Medicine Bow Mountains, Cameron Pass, Breckenridge, Kenosha Mountains, Winter Park, Williams Fork Mountains, Willow Creek Pass, Rabbit Ears Range, and Berthoud Pass 148 PM MDT Mon May 3 2021 ...WINTER STORM WARNING IS CANCELLED... Area webcams have shown mostly dry roads across the warned area. Snow showers are expected to continue through this evening with additional accumulations of 1-4" on grassy and elevated surfaces but minimal to no travel impacts are expected. A few icy spots are possible across the highest passes this evening after sunset. $$ COZ031-035-036-032100- /O.CAN.KBOU.WW.Y.0028.000000T0000Z-210504T0000Z/ West Jackson and West Grand 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- Including the cities of Evergreen, Georgetown, Glendevey, Nederland, Westcreek, Mt Zirkel, Central City, Red Feather Lakes, Idaho Springs, Estes Park, and Bailey 148 PM MDT Mon May 3 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Area webcams have shown wet roads across the advisory area. An additional Trace-3" may fall on grassy surfaces through this evening but no travel impacts are anticipated. $$ For more information from the National Weather Service, visit https://weather.gov/bou Schlatter
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 7:40 PM MDT | Special Weather Statement | BOU | Broomfield | 35 min |
| May 2, 10:36 AM MDT | Special Weather Statement | BOU | Boulder | 24 min |
| May 2, 11:01 AM MDT | Special Weather Statement | BOU | Broomfield | 29 min |
| May 2, 11:40 AM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 50 min |
| May 2, 1:17 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Logan, Morgan, Washington | 28 min |
| May 2, 2:13 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 32 min |
| May 2, 2:19 PM MDT | Winter Weather Advisory | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 3 more | 23 hr |
| May 2, 4:07 PM MDT | Flash Flood Warning | BOU | Larimer | 3 hr |
| May 2, 5:04 PM MDT | Special Weather Statement | BOU | Weld | 41 min |
| May 2, 5:47 PM MDT | Areal Flood Advisory | BOU | Boulder | 88 min |
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; radar from the NEXRAD Level II archive.