Alert archive / Colorado / Winter Storm Warnings in 2021
Winter Storm Warning 11, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at Dec 22, 2021, 2:33 PM MST for 9 counties in Colorado. It took effect at Dec 23, 2021, 2:00 PM MST. It was in force for 45 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
- Dec 22, 2021, 2:33 PM MST (21:33 UTC)
- In effect from
- Dec 23, 2021, 2:00 PM MST
- Expired
- Dec 25, 2021, 11:00 AM MST
- In force
- 45 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 21:33 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 |
|---|---|---|---|
| Dec 23, 10:05 PM MST | SNOW 1.2 | 2 Sse Breckenridge, CO | |
| Dec 24, 7:38 AM MST | SNOW 4 | 7 E Blue River, CO | MICHIGAN CREEK SNOTEL SNOWFALL BETWEEN 7 AM 12/23/2021 AND 7 AM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 7:38 AM MST | SNOW 5 | 5 W Berthoud Falls, CO | JONES PASS SNOTEL SNOWFALL BETWEEN 7 AM 12/23/2021 AND 7 AM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 7:38 AM MST | HEAVY SNOW 11 | 9 E Glendevey, CO | DEADMAN HILL SNOTEL SNOWFALL BETWEEN 7 AM 12/23/2021 AND 7 AM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 7:38 AM MST | HEAVY SNOW 12 | 4 S Longs Peak, CO | WILD BASIN SNOTEL SNOWFALL BETWEEN 7 AM 12/23/2021 AND 7 AM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 7:38 AM MST | HEAVY SNOW 12 | 9 Se Cameron Pass, CO | WILLOW PARK SNOTEL SNOWFALL BETWEEN 7 AM 12/23/2021 AND 7 AM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 7:38 AM MST | HEAVY SNOW 12 | 9 Sse Gould, CO | NEVER SUMMER SNOTEL SNOWFALL BETWEEN 7 AM 12/23/2021 AND 7 AM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 7:38 AM MST | HEAVY SNOW 13 | 8 Nw Glendevey, CO | ROACH SNOTEL SNOWFALL BETWEEN 7 AM 12/23/2021 AND 7 AM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 7:38 AM MST | HEAVY SNOW 16 | 4 Se Mount Zirkel, CO | ZIRKEL SNOTEL SNOWFALL BETWEEN 7 AM 12/23/2021 AND 7 AM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 8:37 AM MST | SNOW 3.5 | 2 Ssw Estes Park, CO | |
| Dec 24, 8:56 AM MST | SNOW 5 | 2 Sse Tabernash, CO | |
| Dec 24, 12:30 PM MST | SNOW 1 | 4 Ne Nederland, CO | |
| Dec 24, 1:47 PM MST | SNOW 1 | 1 S Crescent Village, CO | |
| Dec 24, 2:21 PM MST | SNOW 3 | Silverthorne, CO | |
| Dec 24, 6:14 PM MST | SNOW 2 | 1 Ne Echo Lake, CO | ECHO LAKE SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | SNOW 5 | 1 Sw Eldora, CO | LAKE ELDORA SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | SNOW 5 | 7 E Blue River, CO | MICHIGAN CREEK SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | SNOW 5 | 7 Nw Red Feather Lakes, CO | BLACK MOUNTAIN SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | SNOW 5 | 9 Se Weston Pass, CO | ROUGH AND TUMBLE SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 6 | 3 Sw Ward, CO | NIWOT SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 7 | 5 Ssw Blue River, CO | HOOSIER PASS SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 8 | 3 S Brainard Lake, CO | UNIVERSITY CAMP SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 8 | 3 Wnw Pingree Park, CO | HOURGLASS LAKE SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 9 | 11 S Rabbit Ears Pass, CO | BUFFALO PARK SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 9 | 8 Sse Cameron Pass, CO | PHANTOM VALLEY SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 10 | 1 W Copper Mountain, CO | COPPER MOUNTAIN SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 10 | 3 Sw Meeker Park, CO | COPELAND LAKE SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 10 | 5 W Berthoud Falls, CO | JONES PASS SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 10 | 5 Wsw Grand Lake, CO | STILLWATER CREEK SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 11 | 10 Nne Silverthorne, CO | MIDDLE FORK CAMP SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 12 | 1 Nnw Berthoud Pass, CO | BERTHOUD SUMMIT SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 12 | 1 Wnw Loveland Pass, CO | LOVELAND BASIN SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 13 | 1 Sse Loveland Pass, CO | GRIZZLY PEAK SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 13 | 5 Ssw Glendevey, CO | RAWAH SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 13 | 6 Nw Silverthorne, CO | SUMMIT RANCH SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 13 | 9 E Glendevey, CO | DEADMAN HILL SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 14 | 6 E Cameron Pass, CO | LONG DRAW RESERVOIR SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 14 | 8 Nw Glendevey, CO | ROACH SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 15 | 4 S Longs Peak, CO | WILD BASIN SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 15 | 7 Sse Cameron Pass, CO | LAKE IRENE SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 15 | 8 Sse Rand, CO | WILLOW CREEK PASS SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 15 | 9 Se Cameron Pass, CO | WILLOW PARK SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 16 | 3 Nne Mount Audubon, CO | SAWTOOTH SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 16 | 6 W Arapahoe Peak, CO | HIGH LONESOME SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 17 | 9 Sse Gould, CO | NEVER SUMMER SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 17 | 9 Sse Spicer, CO | ARAPAHO RIDGE SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 18 | 4 Nnw Longs Peak, CO | BEAR LAKE SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 20 | 1 Nnw Cameron Pass, CO | JOE WRIGHT SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 6:14 PM MST | HEAVY SNOW 20 | 4 Se Mount Zirkel, CO | ZIRKEL SNOTEL SNOWFALL BETWEEN 5 AM 12/23/2021 AND 5 PM 12/24/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 24, 9:02 PM MST | SNOW 8.6 | 2 Sse Breckenridge, CO | STORM TOTAL. 5.2 INCHES NEW SINCE 9 AM 12/24. |
| Dec 25, 7:18 AM MST | SNOW 1 | 1 Sw Eldora, CO | LAKE ELDORA SNOTEL SNOWFALL BETWEEN 6 AM 12/24/2021 AND 6 AM 12/25/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 25, 7:18 AM MST | SNOW 2 | 1 Ne Echo Lake, CO | ECHO LAKE SNOTEL SNOWFALL BETWEEN 6 AM 12/24/2021 AND 6 AM 12/25/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 25, 7:18 AM MST | SNOW 2 | 7 E Blue River, CO | MICHIGAN CREEK SNOTEL SNOWFALL BETWEEN 6 AM 12/24/2021 AND 6 AM 12/25/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 25, 7:18 AM MST | SNOW 3 | 5 Ssw Blue River, CO | HOOSIER PASS SNOTEL SNOWFALL BETWEEN 6 AM 12/24/2021 AND 6 AM 12/25/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 25, 7:18 AM MST | SNOW 3 | 7 Nw Red Feather Lakes, CO | BLACK MOUNTAIN SNOTEL SNOWFALL BETWEEN 6 AM 12/24/2021 AND 6 AM 12/25/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 25, 7:18 AM MST | SNOW 3 | 8 Nw Glendevey, CO | ROACH SNOTEL SNOWFALL BETWEEN 6 AM 12/24/2021 AND 6 AM 12/25/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 25, 7:18 AM MST | SNOW 3 | 9 Se Weston Pass, CO | ROUGH AND TUMBLE SNOTEL SNOWFALL BETWEEN 6 AM 12/24/2021 AND 6 AM 12/25/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 25, 7:18 AM MST | SNOW 4 | 11 S Rabbit Ears Pass, CO | BUFFALO PARK SNOTEL SNOWFALL BETWEEN 6 AM 12/24/2021 AND 6 AM 12/25/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 25, 7:18 AM MST | SNOW 4 | 3 S Brainard Lake, CO | UNIVERSITY CAMP SNOTEL SNOWFALL BETWEEN 6 AM 12/24/2021 AND 6 AM 12/25/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Dec 25, 7:18 AM MST | SNOW 4 | 3 Sw Ward, CO | NIWOT SNOTEL SNOWFALL BETWEEN 6 AM 12/24/2021 AND 6 AM 12/25/2021 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
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, 9.6 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 4450 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 174 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
592 WWUS45 KBOU 222133 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 233 PM MST Wed Dec 22 2021 COZ031-033-230945- /O.UPG.KBOU.WS.A.0008.211223T2100Z-211225T1200Z/ /O.NEW.KBOU.WS.W.0011.211223T2100Z-211225T1200Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 233 PM MST Wed Dec 22 2021 ...WINTER STORM WARNING IN EFFECT FROM 2 PM THURSDAY TO 5 AM MST SATURDAY... * WHAT...Heavy snow. Total snow accumulations between 12 and 24 inches. Higher amounts possible in the Park Range. Winds could gust as high as 50 mph. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...From 2 PM Thursday to 5 AM MST Saturday. * IMPACTS...Roads will become slick and hazardous. Travel will be very difficult to impossible. 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 && $$ COZ030-230945- /O.NEW.KBOU.WW.Y.0035.211223T2100Z-211225T1200Z/ Jackson County Below 9000 Feet- Including the cities of Rand, Spicer, Walden, North Park, and Gould 233 PM MST Wed Dec 22 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THURSDAY TO 5 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations between 7 and 13 inches. Winds gusting as high as 40 mph. * WHERE...North Park. * WHEN...From 2 PM Thursday to 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ034-230945- /O.NEW.KBOU.WW.Y.0035.211223T2100Z-211225T1200Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 233 PM MST Wed Dec 22 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THURSDAY TO 5 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations between 6 and 14 inches. Winds gusting as high as 50 mph. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 2 PM Thursday to 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes. 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou Danielson
10 follow-up statements
817 WWUS45 KBOU 230430 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 930 PM MST Wed Dec 22 2021 COZ031-033-231300- /O.CON.KBOU.WS.W.0011.211223T2100Z-211225T1200Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 930 PM MST Wed Dec 22 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THURSDAY TO 5 AM MST SATURDAY... * WHAT...Heavy snow. Total snow accumulations between 12 and 24 inches. Higher amounts possible in the Park Range. Winds could gust as high as 50 mph. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...From 2 PM Thursday to 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip. org && $$ COZ030-231300- /O.CON.KBOU.WW.Y.0035.211223T2100Z-211225T1200Z/ Jackson County Below 9000 Feet- Including the cities of Rand, Spicer, Walden, North Park, and Gould 930 PM MST Wed Dec 22 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THURSDAY TO 5 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations between 7 and 13 inches. Winds gusting as high as 40 mph. * WHERE...North Park. * WHEN...From 2 PM Thursday to 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ034-231300- /O.CON.KBOU.WW.Y.0035.211223T2100Z-211225T1200Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 930 PM MST Wed Dec 22 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THURSDAY TO 5 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations between 6 and 14 inches. Winds gusting as high as 50 mph. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 2 PM Thursday to 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ For more information from the National Weather Service, visit https://weather.gov/bou Cooper
735 WWUS45 KBOU 231109 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 409 AM MST Thu Dec 23 2021 COZ031-033-232300- /O.CON.KBOU.WS.W.0011.211223T2100Z-211225T1200Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 409 AM MST Thu Dec 23 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 5 AM MST SATURDAY... * WHAT...Snow and blowing snow. Mostly light snow develops today. Heavy snow then expected tonight through Friday. Total snow accumulations between 12 and 24 inches, with up to three feet in the Park Range. Winds could gust as high as 50 mph. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...From 2 PM this afternoon to 5 AM MST Saturday. * IMPACTS...Roads will become slick and hazardous later today, but then difficult if not impossible travel conditions develop late tonight through Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ030-232300- /O.CON.KBOU.WW.Y.0035.211223T2100Z-211225T1200Z/ Jackson County Below 9000 Feet- Including the cities of Rand, Spicer, Walden, North Park, and Gould 409 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 5 AM MST SATURDAY... * WHAT...Snow expected, with the heavier snow expected late tonight and Friday. Total snow accumulations between 7 and 13 inches. Winds gusting as high as 35 mph. * WHERE...North Park. * WHEN...From 2 PM this afternoon to 5 AM MST Saturday. * IMPACTS...Roads will become slick and hazardous tonight through Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ034-232300- /O.CON.KBOU.WW.Y.0035.211223T2100Z-211225T1200Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 409 AM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 5 AM MST SATURDAY... * WHAT...Snow expected, with the heaviest snow late tonight through Friday. Total snow accumulations between 6 and 14 inches. Winds gusting as high as 50 mph. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 2 PM this afternoon to 5 AM MST Saturday. * IMPACTS...Roads will become slick and hazardous by tonight, and remain in place through Friday and Friday night. 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou Barjenbruch
793 WWUS45 KBOU 232223 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 323 PM MST Thu Dec 23 2021 COZ031-033-241100- /O.CON.KBOU.WS.W.0011.000000T0000Z-211225T1200Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 323 PM MST Thu Dec 23 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... * WHAT...Snow and blowing snow expected tonight through Friday. Snow could be heavy at times. Total snow accumulations between 12 and 24 inches, with up to three feet in the Park Range. Winds could gust as high as 50 mph. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ030-241100- /O.CON.KBOU.WW.Y.0035.000000T0000Z-211225T1200Z/ Jackson County Below 9000 Feet- Including the cities of Rand, Spicer, Walden, North Park, and Gould 323 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... * WHAT...Snow expected, with the heavier snow expected late tonight and Friday. Total snow accumulations between 7 and 13 inches. Winds gusting as high as 35 mph. * WHERE...North Park. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ034-241100- /O.CON.KBOU.WW.Y.0035.000000T0000Z-211225T1200Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 323 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... * WHAT...Snow expected, with the heaviest snow late tonight through Friday. Total snow accumulations between 6 and 14 inches. Winds gusting as high as 50 mph. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ For more information from the National Weather Service, visit https://weather.gov/bou RJK
977 WWUS45 KBOU 240403 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 903 PM MST Thu Dec 23 2021 COZ031-033-241215- /O.CON.KBOU.WS.W.0011.000000T0000Z-211225T1200Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 903 PM MST Thu Dec 23 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... * WHAT...Snow and blowing snow expected tonight through Friday. Snow could be heavy at times. Total snow accumulations between 12 and 24 inches, with up to three feet in the Park Range. Winds could gust as high as 50 mph. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ030-241215- /O.CON.KBOU.WW.Y.0035.000000T0000Z-211225T1200Z/ Jackson County Below 9000 Feet- Including the cities of Rand, Spicer, Walden, North Park, and Gould 903 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... * WHAT...Snow expected, with the heavier snow expected late tonight and Friday. Total snow accumulations between 7 and 13 inches. Winds gusting as high as 35 mph. * WHERE...North Park. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ034-241215- /O.CON.KBOU.WW.Y.0035.000000T0000Z-211225T1200Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 903 PM MST Thu Dec 23 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... * WHAT...Snow expected, with the heaviest snow late tonight through Friday. Total snow accumulations between 6 and 14 inches. Winds gusting as high as 50 mph. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Friday morning and evening commutes. 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou RPK
091 WWUS45 KBOU 240846 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 146 AM MST Fri Dec 24 2021 COZ034-241930- /O.UPG.KBOU.WW.Y.0035.000000T0000Z-211225T1200Z/ /O.EXB.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 146 AM MST Fri Dec 24 2021 ...WINTER STORM WARNING IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Heavy snow ongoing. Storm total snow accumulations between 8 and 16 inches. Winds gusting as high as 50 mph with areas of blowing snow. Snow gradually tapers in intensity later this evening through Saturday morning. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact travel into Saturday morning, although the most difficult travel can be expected today through early this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip. org && $$ COZ031-033-241930- /O.EXT.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 146 AM MST Fri Dec 24 2021 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow and blowing snow. Snow will be heavy at times today, and then gradually decrease in intensity by this evening. Total snow accumulations between 12 and 24 inches, with up to three feet possible in the Park Range. Winds could gust as high as 50 mph. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should consider delaying all travel until late Saturday morning. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ032-241930- /O.EXB.KBOU.WW.Y.0035.000000T0000Z-211225T1800Z/ Grand and Summit Counties Below 9000 Feet- Including the cities of Hot Sulphur Springs, Kremmling, Dillon, Fraser, Grand Lake, and Granby 146 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow ongoing. Total snow accumulations between 4 and 8 inches. Winds gusting as high as 35 mph. * WHERE...Grand and Summit Counties Below 9000 Feet. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Travel will be hazardous with some roads becoming snow covered and slick, especially during periods of heavier snowfall today. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ030-241930- /O.EXT.KBOU.WW.Y.0035.000000T0000Z-211225T1800Z/ Jackson County Below 9000 Feet- Including the cities of Rand, Spicer, Walden, North Park, and Gould 146 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow, heavy at times today. Total snow accumulations between 7 and 13 inches. Winds gusting as high as 35 mph. Snow tapers in intensity by this evening, but lighter snow is expected to continue into Saturday morning. * WHERE...North Park. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Many roads will be slick and hazardous. Bands of heavier snow may limit visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ For more information from the National Weather Service, visit https://weather.gov/bou Barjenbruch
957 WWUS45 KBOU 241800 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1100 AM MST Fri Dec 24 2021 COZ031-033-250800- /O.CON.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 1100 AM MST Fri Dec 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow and blowing snow. Snow will be heavy at times today, and then gradually decrease in intensity by this evening. Total snow accumulations between 12 and 24 inches, with up to three feet possible in the Park Range. Winds could gust as high as 50 mph. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ034-250800- /O.CON.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 1100 AM MST Fri Dec 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Heavy snow ongoing. Storm total snow accumulations between 8 and 16 inches. Winds gusting as high as 50 mph with areas of blowing snow. Snow gradually tapers in intensity later this evening through Saturday morning. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip. org && $$ COZ030-250800- /O.CON.KBOU.WW.Y.0035.000000T0000Z-211225T1800Z/ Jackson County Below 9000 Feet- Including the cities of Rand, Spicer, Walden, North Park, and Gould 1100 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow, heavy at times today. Total snow accumulations between 7 and 13 inches. Winds gusting as high as 35 mph. Snow tapers in intensity by this evening, but lighter snow is expected to continue into Saturday morning. * WHERE...North Park. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ032-250800- /O.CON.KBOU.WW.Y.0035.000000T0000Z-211225T1800Z/ Grand and Summit Counties Below 9000 Feet- Including the cities of Hot Sulphur Springs, Kremmling, Dillon, Fraser, Grand Lake, and Granby 1100 AM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow ongoing. Total snow accumulations between 4 and 8 inches. Winds gusting as high as 35 mph. * WHERE...Grand and Summit Counties Below 9000 Feet. * WHEN...Until 11 AM MST Saturday. * 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou AD
773 WWUS45 KBOU 250304 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 804 PM MST Fri Dec 24 2021 COZ031-033-251115- /O.CON.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 804 PM MST Fri Dec 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow and blowing snow will increase late this evening, and then gradually decrease during the day on Saturday. Total snow accumulations between 12 and 24 inches, with up to 30 inches in the Park Range. Winds could gust as high as 50 mph. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ COZ034-251115- /O.CON.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 804 PM MST Fri Dec 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow and blowing snow will increase late this evening and then gradually end during the day on Saturday. Storm total snow accumulations between 8 and 18 inches. Winds gusting as high as 50 mph with areas of blowing snow. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. 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 && $$ COZ030-251115- /O.CON.KBOU.WW.Y.0035.000000T0000Z-211225T1800Z/ Jackson County Below 9000 Feet- Including the cities of Rand, Spicer, Walden, North Park, and Gould 804 PM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Periods of snow overnight then ending on Saturday. Total snow accumulations between 7 and 13 inches. Winds gusting as high as 35 mph. * WHERE...North Park. * WHEN...Until 11 AM MST Saturday. * IMPACTS...Roads will be slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ032-251115- /O.CON.KBOU.WW.Y.0035.000000T0000Z-211225T1800Z/ Grand and Summit Counties Below 9000 Feet- Including the cities of Hot Sulphur Springs, Kremmling, Dillon, Fraser, Grand Lake, and Granby 804 PM MST Fri Dec 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Periods of snow overnight then ending on Saturday. Total snow accumulations between 6 and 12 inches. Winds gusting as high as 35 mph. * WHERE...Grand and Summit Counties Below 9000 Feet. * WHEN...Until 11 AM MST Saturday. * 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou RPK
144 WWUS45 KBOU 251046 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 346 AM MST Sat Dec 25 2021 COZ031-033-251815- /O.NEW.KBOU.WS.A.0009.211226T0900Z-211227T1200Z/ /O.CON.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 346 AM MST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... ...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH LATE SUNDAY NIGHT... * WHAT...Snow and blowing snow will gradually diminish this morning. Additional accumulations will range between 1 and 3 inches. Another round of snow will move into the mountains late tonight, and may become heavy at times Sunday afternoon with additional accumulations of 6 to 12 inches possible. Winds will also strengthen with gusts greater 60 mph above timberline producing considerable blowing and drifting snow over the higher mountain passes. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...For the Winter Storm Warning, until 11 AM MST this morning. For the Winter Storm Watch, from late tonight through late Sunday night, with the most difficult travel conditions expected Sunday afternoon. * IMPACTS...Travel could be very difficult due to periods of heavy snow, blowing snow, and poor visibility. Roads will be slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. If you must travel during these times, 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 && $$ COZ034-251815- /O.NEW.KBOU.WS.A.0009.211226T0900Z-211227T1200Z/ /O.CON.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 346 AM MST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... ...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH LATE SUNDAY NIGHT... * WHAT...Snow showers and blowing snow will gradually diminish this morning. Additional accumulations will be less than 2 inches. Another round of snow will move into the mountains late tonight or early Sunday morning, and may become heavy at times Sunday afternoon with additional accumulations of 4 to 8 inches possible. Winds will also strengthen with gusts greater 60 mph above timberline producing considerable blowing and drifting snow over the higher mountain passes. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...For the Winter Storm Warning, until 11 AM MST this morning. For the Winter Storm Watch, from early Sunday morning through late Sunday night with the worst conditions expected Sunday afternoon. * IMPACTS...Travel could be very difficult due to periods of heavy snow, blowing snow, and poor visibility. Roads will be slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. If you must travel during these times, 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 && $$ COZ030-251800- /O.CON.KBOU.WW.Y.0035.000000T0000Z-211225T1800Z/ Jackson County Below 9000 Feet- Including the cities of Rand, Spicer, Walden, North Park, and Gould 346 AM MST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow showers will gradually decrease through the rest of the morning. Additional snow accumulation will be less than 2 inches. * WHERE...North Park. * WHEN...Until 11 AM MST this morning. * IMPACTS...Roads will be slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ032-251800- /O.CON.KBOU.WW.Y.0035.000000T0000Z-211225T1800Z/ Grand and Summit Counties Below 9000 Feet- Including the cities of Hot Sulphur Springs, Kremmling, Dillon, Fraser, Grand Lake, and Granby 346 AM MST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow showers will gradually decrease and come to an end later this morning. Additional snow accumulation will be an inch or less. * WHERE...Grand and Summit Counties Below 9000 Feet. * WHEN...Until 11 AM MST 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 && $$ For more information from the National Weather Service, visit https://weather.gov/bou Barjenbruch
770 WWUS45 KBOU 251540 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 840 AM MST Sat Dec 25 2021 COZ034-252345- /O.CAN.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ /O.CON.KBOU.WS.A.0009.211226T0900Z-211227T1200Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 840 AM MST Sat Dec 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH LATE SUNDAY NIGHT... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Occasional light snow showers are expected through this evening. Additional accumulations will be less than 2 inches. Another round of snow will move into the mountains late tonight or early Sunday morning, and may become heavy at times Sunday afternoon with additional accumulations of 4 to 8 inches possible. Winds will also strengthen with gusts greater 60 mph above timberline producing considerable blowing and drifting snow over the higher mountain passes. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From late tonight through late Sunday night. * IMPACTS...Travel could be very difficult. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ COZ030-032-251645- /O.CAN.KBOU.WW.Y.0035.000000T0000Z-211225T1800Z/ Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet- Including the cities of Rand, Granby, North Park, Hot Sulphur Springs, Dillon, Kremmling, Fraser, Grand Lake, Walden, Gould, and Spicer 840 AM MST Sat Dec 25 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Occasional light snow showers are expected today, but additional accumulations will be an inch or less. $$ COZ031-033-252345- /O.CON.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ /O.CON.KBOU.WS.A.0009.211226T0900Z-211227T1200Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 840 AM MST Sat Dec 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH LATE SUNDAY NIGHT... * WHAT...Snow and blowing snow will gradually diminish this morning. Additional accumulations will range between 1 and 3 inches. Another round of snow will move into the mountains late tonight, and may become heavy at times Sunday afternoon with additional accumulations of 6 to 12 inches possible. Winds will also strengthen with gusts greater 60 mph above timberline producing considerable blowing and drifting snow over the higher mountain passes. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...For the Winter Storm Warning, until 11 AM MST this morning. For the Winter Storm Watch, from late tonight through late Sunday night. * IMPACTS...Road conditions will improve today, but will likely become slick and hazardous again Sunday morning. Travel could be very difficult. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Consider traveling this afternoon and evening when conditions will be relatively good. If you must travel Sunday, be prepared for winter storm conditions. Have an emergency kit with you in case you are stranded. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Gimmestad
249 WWUS45 KBOU 251814 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1114 AM MST Sat Dec 25 2021 COZ031-033-260215- /O.EXP.KBOU.WS.W.0011.000000T0000Z-211225T1800Z/ /O.CON.KBOU.WS.A.0009.211226T0900Z-211227T1200Z/ West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Mt Zirkel, Laramie and Medicine Bow Mountains, Cameron Pass, Willow Creek Pass, and Rabbit Ears Range 1114 AM MST Sat Dec 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH LATE SUNDAY NIGHT... ...WINTER STORM WARNING HAS EXPIRED... * WHAT...Occasional light snow is expected through this evening, with additional accumulation of less than 2 inches. Another round of snow will move into the mountains late tonight, and may become heavy at times Sunday afternoon with another 6 to 12 inches possible. West winds at 20 to 40 mph today will produce areas of blowing snow. The winds will also strengthen with gusts greater 60 mph above timberline producing considerable blowing and drifting snow over higher areas. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the Medicine Bow Range. * WHEN...From late tonight through late Sunday night. * IMPACTS...Travel could be very difficult, especially during the day Sunday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. Check road conditions before departing and be prepared to adjust plans as needed. && $$ COZ034-260215- /O.CON.KBOU.WS.A.0009.211226T0900Z-211227T1200Z/ South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Indian Peaks, Eisenhower Tunnel, East Slopes Southern Gore Range, Mount Evans, East Slopes Mosquito Range, Breckenridge, Winter Park, Williams Fork Mountains, Kenosha Mountains, and Berthoud Pass 1114 AM MST Sat Dec 25 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH LATE SUNDAY NIGHT... * WHAT...Occasional light snow showers are expected through this evening. Additional accumulations will be less than 2 inches. Another round of snow will move into the mountains late tonight or early Sunday morning, and may become heavy at times Sunday afternoon with additional accumulations of 4 to 8 inches possible. Winds will also strengthen with gusts greater 60 mph above timberline producing considerable blowing and drifting snow over the higher mountain passes. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From late tonight through late Sunday night. * IMPACTS...Travel could be very difficult, especially Sunday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. Check road conditions before departing and be prepared to adjust plans as needed. && $$ 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 |
|---|---|---|---|---|
| Dec 22, 2:47 AM MST | Winter Storm Watch | BOU | Boulder, Grand, Jackson, Larimer | 12 hr |
| Dec 22, 3:11 AM MST | Red Flag Warning | BOU | Boulder, Clear Creek, Douglas, Gilpin, Jefferson, Larimer and 3 more | 14 hr |
| Dec 22, 2:33 PM MST | Winter Weather Advisory | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 2 more | 66 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; radar from the NEXRAD Level II archive.