Alert archive / Colorado / Winter Storm Warnings in 2024
Winter Storm Warning 13, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter storm warning at Apr 26, 2024, 1:36 PM MDT for 10 counties in Colorado. It took effect at Apr 26, 2024, 9:00 PM MDT. It was in force for 27 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
- Apr 26, 2024, 1:36 PM MDT (19:36 UTC)
- In effect from
- Apr 26, 2024, 9:00 PM MDT
- Expired
- Apr 28, 2024, 12:02 AM MDT
- In force
- 27 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Douglas 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), 94 km from the middle of the area, began a volume at 19:38 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 |
|---|---|---|---|
| Apr 27, 7:24 AM MDT | SNOW 7.7 | 3 E Pennock Pass, CO | |
| Apr 27, 8:00 AM MDT | SNOW 0.9 | Walden, CO | |
| Apr 27, 8:15 AM MDT | SNOW 5.6 | 1 W Aspen Springs, CO | . |
| Apr 27, 8:15 AM MDT | SNOW 5.6 | 1 W Aspen Springs, CO | |
| Apr 27, 8:30 AM MDT | SNOW 6 | 4 Ne Nederland, CO | Snowfall rate 3 inches per hour at time of report. |
| Apr 27, 9:30 AM MDT | SNOW 5.5 | 2 W Aspen Park, CO | |
| Apr 27, 9:30 AM MDT | SNOW 6 | 1 S Crescent Village, CO | . |
| Apr 27, 9:30 AM MDT | SNOW 6 | 1 S Crescent Village, CO | |
| Apr 27, 9:30 AM MDT | SNOW 10 | 3 Sw Fairplay, CO | |
| Apr 27, 9:33 AM MDT | SNOW 5.4 | 2 Se Breckenridge, CO | |
| Apr 27, 10:00 AM MDT | SNOW 7.5 | 1 Ssw Copper Mountain, CO | As of 10AM Saturday per Copper mountain resort snow stake. |
| Apr 27, 10:00 AM MDT | SNOW 8 | 3 Sw Breckenridge, CO | As of 10AM Saturday per Breckenridge resort snow stake. |
| Apr 27, 10:03 AM MDT | SNOW 4 | 2 Sse Winter Park, CO | As of 10AM Saturday per Winter Park resort snow stake. |
| Apr 27, 10:04 AM MDT | SNOW 5.5 | 1 Wnw Loveland Pass, CO | As of 10AM Saturday per Loveland resort snow stake. |
| Apr 27, 10:10 AM MDT | SNOW 5 | 3 Ene Antero Junction, CO | |
| Apr 27, 10:10 AM MDT | SNOW 5.5 | 1 N Genesee, CO | . |
| Apr 27, 10:10 AM MDT | SNOW 5.5 | 1 N Genesee, CO | |
| Apr 27, 10:30 AM MDT | SNOW 9 | 3 Ne Nederland, CO | |
| Apr 27, 10:45 AM MDT | SNOW 6 | 1 S St Marys Glacier, CO | |
| Apr 27, 10:45 AM MDT | SNOW 6.3 | 3 E Conifer, CO | |
| Apr 27, 11:10 AM MDT | SNOW 6.8 | 1 N Genesee, CO | . |
| Apr 27, 11:10 AM MDT | SNOW 6.8 | 1 N Genesee, CO | |
| Apr 27, 11:32 AM MDT | SNOW 8.1 | 1 W Aspen Springs, CO | |
| Apr 27, 12:00 PM MDT | SNOW 2 | 3 Wnw Parker, CO | |
| Apr 27, 12:16 PM MDT | SNOW 7.9 | 1 N Genesee, CO | |
| Apr 27, 12:49 PM MDT | SNOW 2 | 11 S Rabbit Ears Pass, CO | BUFFALO PARK SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 2 | 11 S Rabbit Ears Pass, CO | BUFFALO PARK SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 2 | 9 Sse Spicer, CO | ARAPAHO RIDGE SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 2 | 9 Sse Spicer, CO | ARAPAHO RIDGE SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 3 | 5 Wsw Winter Park, CO | FOOL CREEK SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 3 | 5 Wsw Winter Park, CO | FOOL CREEK SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 4 | 1 Sse Loveland Pass, CO | GRIZZLY PEAK SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 4 | 1 Sse Loveland Pass, CO | GRIZZLY PEAK SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 4 | 5 W Green Mountain Rese, CO | ELLIOT RIDGE SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 4 | 5 W Green Mountain Rese, CO | ELLIOT RIDGE SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 5 | 1 W Copper Mountain, CO | COPPER MOUNTAIN SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 5 | 1 W Copper Mountain, CO | COPPER MOUNTAIN SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 5 | 6 W Arapahoe Peak, CO | HIGH LONESOME SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 5 | 6 W Arapahoe Peak, CO | HIGH LONESOME SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 5 | 7 Nw Red Feather Lakes, CO | BLACK MOUNTAIN SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 5 | 7 Nw Red Feather Lakes, CO | BLACK MOUNTAIN SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 5 | 8 Sse Rand, CO | WILLOW CREEK PASS SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 5 | 8 Sse Rand, CO | WILLOW CREEK PASS SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 5 | 9 Se Weston Pass, CO | ROUGH AND TUMBLE SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 5 | 9 Se Weston Pass, CO | ROUGH AND TUMBLE SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 6 | 1 Nnw Berthoud Pass, CO | BERTHOUD SUMMIT SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 6 | 1 Nnw Berthoud Pass, CO | BERTHOUD SUMMIT SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 6 | 6 Nw Silverthorne, CO | SUMMIT RANCH SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 6 | 6 Nw Silverthorne, CO | SUMMIT RANCH SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 7 | 1 Nw Climax, CO | FREMONT PASS SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 7 | 1 Nw Climax, CO | FREMONT PASS SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 7 | 5 Wsw Grand Lake, CO | STILLWATER CREEK SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 7 | 5 Wsw Grand Lake, CO | STILLWATER CREEK SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 7 | 5 Wsw Guanella Pass, CO | JACKWHACKER GULCH SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 7 | 5 Wsw Guanella Pass, CO | JACKWHACKER GULCH SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 8 | 1 Wnw Loveland Pass, CO | LOVELAND BASIN SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 8 | 1 Wnw Loveland Pass, CO | LOVELAND BASIN SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 8 | 8 Nw Glendevey, CO | ROACH SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO. |
| Apr 27, 12:49 PM MDT | SNOW 8 | 8 Nw Glendevey, CO | ROACH SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 ESTIMATED USING A 10 TO 1 SNOW-TO-LIQUID RATIO |
| Apr 27, 12:49 PM MDT | SNOW 9 | 3 Wnw Alma, CO | BUCKSKIN JOE SNOTEL SNOWFALL BETWEEN 5 PM 04/26/2024 AND 11 AM 04/27/2024 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
Grand Junction, CO (KGJT), launched 12:00Z, 7.6 hours before the alert went out and 258 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
- 1804 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
870 WWUS45 KBOU 261936 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 136 PM MDT Fri Apr 26 2024 COZ033-034-271200- /O.UPG.KBOU.WS.A.0016.240427T0000Z-240428T1200Z/ /O.NEW.KBOU.WS.W.0013.240427T0300Z-240428T0600Z/ 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 Eisenhower Tunnel, Rabbit Ears Range, Breckenridge, Rocky Mountain National Park, Indian Peaks, Mount Blue Sky, Berthoud Pass, Williams Fork Mountains, Cameron Pass, Willow Creek Pass, East Slopes Mosquito Range, East Slopes Southern Gore Range, Kenosha Mountains, Winter Park, and Laramie and Medicine Bow Mountains 136 PM MDT Fri Apr 26 2024 ...WINTER STORM WARNING IN EFFECT FROM 9 PM THIS EVENING TO MIDNIGHT MDT SATURDAY NIGHT... * WHAT...Heavy snow expected. Total snow accumulations between 1 and 3 feet possible along and east of the Continental Divide. Total snow accumulations between 6 and 12 inches possible west of the Continental Divide and in Summit County. Heaviest snow expected above 9,500 feet. * 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 9 PM this evening to midnight MDT Saturday Night. Heaviest snow is expected Saturday morning. * 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. && $$ COZ035-036-271200- /O.UPG.KBOU.WS.A.0016.240427T0600Z-240428T1200Z/ /O.NEW.KBOU.WS.W.0013.240427T0900Z-240428T1200Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Evergreen, Idaho Springs, Red Feather Lakes, Central City, Georgetown, Bailey, Estes Park, Westcreek, Glendevey, and Nederland 136 PM MDT Fri Apr 26 2024 ...WINTER STORM WARNING IN EFFECT FROM 3 AM SATURDAY TO 6 AM MDT SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations between 1 and 2 feet possible above 8,500 feet, and between 4 and 12 inches possible below 8,500 feet. * WHERE...The Northern Front Range Foothills, and The Southern Front Range Foothills. * WHEN...From 3 AM Saturday to 6 AM MDT Sunday. Heaviest snow Saturday morning, but continuing throughout the day. * IMPACTS...Travel may become very difficult to impossible due to heavy snowfall on roadways. Additionally, the heavy and wet snow could damage trees. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Rodriguez
4 follow-up statements
107 WWUS45 KBOU 270238 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 838 PM MDT Fri Apr 26 2024 COZ033-034-271100- /O.CON.KBOU.WS.W.0013.240427T0300Z-240428T0600Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Williams Fork Mountains, Laramie and Medicine Bow Mountains, Breckenridge, Willow Creek Pass, Indian Peaks, Cameron Pass, Rabbit Ears Range, Rocky Mountain National Park, Eisenhower Tunnel, East Slopes Mosquito Range, Kenosha Mountains, Mount Blue Sky, Winter Park, Berthoud Pass, and East Slopes Southern Gore Range 838 PM MDT Fri Apr 26 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT SATURDAY NIGHT... * WHAT...Heavy snow expected. Total snow accumulations between 1 and 3 feet possible along and east of the Continental Divide. Total snow accumulations between 6 and 12 inches possible west of the Continental Divide and in Summit County. Heaviest snow expected above 9,500 feet. * 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 Saturday Night. Heaviest snow Saturday morning, but continuing throughout the day. * 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. && $$ COZ035-036-271100- /O.CON.KBOU.WS.W.0013.240427T0900Z-240428T1200Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Idaho Springs, Nederland, Red Feather Lakes, Georgetown, Evergreen, Glendevey, Central City, Westcreek, Bailey, and Estes Park 838 PM MDT Fri Apr 26 2024 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM SATURDAY TO 6 AM MDT SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations between 1 and 2 feet possible above 8,500 feet, and between 4 and 12 inches possible below 8,500 feet. * WHERE...The Front Range Foothills. * WHEN...From 3 AM Saturday to 6 AM MDT Sunday. Heaviest snow Saturday morning, but continuing throughout the day. * IMPACTS...Travel may become very difficult to impossible due to heavy snowfall on roadways. Additionally, the heavy and wet snow could damage trees. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ037-271100- /O.NEW.KBOU.WW.Y.0022.240427T0300Z-240428T0600Z/ Central and Southeast Park County- Including the cities of Fairplay, Lake George, South Park, and Hartsel 838 PM MDT Fri Apr 26 2024 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MDT SATURDAY NIGHT... * WHAT...Snow expected. Total snow accumulations between 5 and 10 inches. * WHERE...South Park. * WHEN...Until midnight MDT Saturday Night. * IMPACTS...Roads will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. && $$ COZ041-271100- /O.NEW.KBOU.WW.Y.0022.240427T1200Z-240428T0600Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Larkspur, Fondis, Castle Rock, Elbert, and Kiowa 838 PM MDT Fri Apr 26 2024 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM SATURDAY TO MIDNIGHT MDT SATURDAY NIGHT... * WHAT...Wet slushy snow and expected. Total snow accumulations 3 to 8 inches above 6500 feet. * WHERE...Palmer Divide * WHEN...From 6 AM Saturday to midnight MDT Saturday Night. * IMPACTS...Snow and slush covered roads will make travel hazardous Saturday and Saturday evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Meier
584 WWUS45 KBOU 270811 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 211 AM MDT Sat Apr 27 2024 COZ033-034-272000- /O.CON.KBOU.WS.W.0013.000000T0000Z-240428T0600Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Willow Creek Pass, Rocky Mountain National Park, East Slopes Mosquito Range, Indian Peaks, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Breckenridge, Berthoud Pass, East Slopes Southern Gore Range, Williams Fork Mountains, Eisenhower Tunnel, Winter Park, Cameron Pass, Mount Blue Sky, and Kenosha Mountains 211 AM MDT Sat Apr 27 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * WHAT...Heavy snow expected. Total snow accumulations between 1 and 3 feet possible along and east of the Continental Divide. Total snow accumulations between 6 and 12 inches possible west of the Continental Divide and in Summit County. Heaviest snow expected above 9,500 feet. * 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. Heaviest snow this morning, but continuing through this evening. * IMPACTS...Roads will likely become slick, snow covered 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. && $$ COZ035-036-272000- /O.CON.KBOU.WS.W.0013.240427T0900Z-240428T1200Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Estes Park, Nederland, Central City, Glendevey, Bailey, Idaho Springs, Evergreen, Westcreek, Red Feather Lakes, and Georgetown 211 AM MDT Sat Apr 27 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations between 1 and 2 feet possible above 8,000 feet, and between 4 and 12 inches possible below 8,500 feet. * WHERE...The Front Range Foothills. * WHEN...Until 6 AM MDT Sunday. * IMPACTS...Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ041-272000- /O.EXT.KBOU.WW.Y.0022.240427T0900Z-240428T0600Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Larkspur, Elbert, Kiowa, Fondis, and Castle Rock 211 AM MDT Sat Apr 27 2024 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * WHAT...Wet and slushy snow is expected. Total snow accumulations 4 to 12 inches, heaviest above 6500 feet. * WHERE...Palmer Divide * WHEN...Until midnight MDT tonight. * IMPACTS...Snow and slush covered roads will make travel hazardous today through this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. && $$ COZ037-272000- /O.CON.KBOU.WW.Y.0022.000000T0000Z-240428T0600Z/ Central and Southeast Park County- Including the cities of Lake George, South Park, Fairplay, and Hartsel 211 AM MDT Sat Apr 27 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * WHAT...Snow expected. Total snow accumulations between 5 and 12 inches. * WHERE...South Park. * WHEN...Until midnight MDT tonight. * IMPACTS...Be prepared for hazardous travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Roads will be slick and snow covered, resulting in slow and hazardous travel. Allow extra time to reach your destination. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Cooper
782 WWUS45 KBOU 271950 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 150 PM MDT Sat Apr 27 2024 COZ033-034-280600- /O.CON.KBOU.WS.W.0013.000000T0000Z-240428T0600Z/ 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 Kenosha Mountains, Winter Park, Willow Creek Pass, Eisenhower Tunnel, Rabbit Ears Range, Laramie and Medicine Bow Mountains, Mount Blue Sky, East Slopes Mosquito Range, Berthoud Pass, Rocky Mountain National Park, Breckenridge, Williams Fork Mountains, East Slopes Southern Gore Range, Indian Peaks, and Cameron Pass 150 PM MDT Sat Apr 27 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * WHAT...Moderate to heavy snow. Additional snow accumulations up to 6 inches, locally up to 8 inches. * 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 become slick, snow covered and hazardous. Travel could be very difficult. 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. && $$ COZ035-036-280600- /O.CON.KBOU.WS.W.0013.000000T0000Z-240428T1200Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet-Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Georgetown, Evergreen, Central City, Estes Park, Idaho Springs, Bailey, Red Feather Lakes, Nederland, Glendevey, and Westcreek 150 PM MDT Sat Apr 27 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT SUNDAY... * WHAT...Moderate to heavy snow. Additional snow accumulations up to 6 inches. * WHERE...The Front Range Foothills. * WHEN...Until 6 AM MDT Sunday. * IMPACTS...Travel may become very difficult due to heavy snowfall on roadways. Additionally, the heavy and wet snow could damage trees. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org. && $$ COZ037-280600- /O.CON.KBOU.WW.Y.0022.000000T0000Z-240428T0600Z/ Central and Southeast Park County- Including the cities of South Park, Hartsel, Lake George, and Fairplay 150 PM MDT Sat Apr 27 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...South Park. * WHEN...Until midnight MDT tonight. * IMPACTS...Be prepared for hazardous travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Roads will be slick and snow covered, resulting in slow and hazardous travel. Allow extra time to reach your destination. && $$ COZ041-280600- /O.CON.KBOU.WW.Y.0022.000000T0000Z-240428T0600Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Fondis, Kiowa, Elbert, Castle Rock, and Larkspur 150 PM MDT Sat Apr 27 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * WHAT...Wet snow. Additional snow accumulations up to 4 inches. * WHERE...Palmer Divide * WHEN...Until midnight MDT tonight. * IMPACTS...Snow and slush covered roads will make travel hazardous this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Mensch
381 WWUS45 KBOU 280602 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1202 AM MDT Sun Apr 28 2024 COZ035-036-280715- /O.CAN.KBOU.WS.W.0013.000000T0000Z-240428T1200Z/ 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 Georgetown, Westcreek, Evergreen, Nederland, Bailey, Red Feather Lakes, Idaho Springs, Central City, Estes Park, and Glendevey 1202 AM MDT Sun Apr 28 2024 ...WINTER STORM WARNING IS CANCELLED... The threat has ended. $$ COZ033-034-280715- /O.EXP.KBOU.WS.W.0013.000000T0000Z-240428T0600Z/ South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including the cities of Rocky Mountain National Park, Berthoud Pass, Eisenhower Tunnel, East Slopes Mosquito Range, Cameron Pass, Mount Blue Sky, Willow Creek Pass, Breckenridge, Laramie and Medicine Bow Mountains, Indian Peaks, Kenosha Mountains, East Slopes Southern Gore Range, Williams Fork Mountains, Winter Park, and Rabbit Ears Range 1202 AM MDT Sun Apr 28 2024 ...WINTER STORM WARNING HAS EXPIRED... $$ COZ037-041-280715- /O.EXP.KBOU.WW.Y.0022.000000T0000Z-240428T0600Z/ Central and Southeast Park County-Elbert/Central and East Douglas Counties Above 6000 Feet- Including the cities of Fairplay, Elbert, Castle Rock, Hartsel, Larkspur, Kiowa, Lake George, South Park, and Fondis 1202 AM MDT Sun Apr 28 2024 ...WINTER WEATHER ADVISORY HAS EXPIRED... $$ For more information from the National Weather Service, visit https://weather.gov/bou Cooper
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this winter storm warning went out at Apr 26, 9:37 AM MDT, 3 hours 59 minutes earlier. Its key messages:
- Cooler on today, with scattered showers continuing.
- Significant snowfall for the mountains and higher foothills tonight through Saturday night.
- Snow level 7000 to 8000 feet MSL.
- Rain Saturday/Saturday night lower foothills, Urban Corridor, and eastern plains with 1 to 3 inches of rainfall.
Area forecast discussion, Apr 26, 9:37 AM MDT, 3 hours 59 minutes before
Area Forecast Discussion National Weather Service Denver/Boulder CO 937 AM MDT Fri Apr 26 2024 .KEY MESSAGES... - Cooler on today, with scattered showers continuing. - Significant snowfall for the mountains and higher foothills tonight through Saturday night. - Snow level 7000 to 8000 feet MSL. - Rain Saturday/Saturday night lower foothills, Urban Corridor, and eastern plains with 1 to 3 inches of rainfall. && .UPDATE... Issued at 912 AM MDT Fri Apr 26 2024 Scattered light rain showers continue across the northeast plains this morning, funneling into the area on the backside of an eject surface low that will farther into Nebraska by this afternoon. This should lead to a gradual decrease in showers as very temporary weak ridging and subsidence builds into our region. It's been a wet 24-hours for the northeast plains though - we received a Co-op report of 2.83" south of Sedgwick! Moisture will take a little bit to climb throughout the column this afternoon, with satellite imagery showing entirely clear skies just east of the Continental Divide. Suspect much of the foothills and urban corridor won't all that much activity until close to late afternoon. As such, have made some downward adjustments to precipitation probabilities before activity ramps up more significantly this evening. && .SHORT TERM /Through tonight/... Issued at 304 AM MDT Fri Apr 26 2024 The first trough over the northeast plains early this morning, is expected to lift into NE by 15z. Much of the precipitation associated with this trough has shifted east of the urban corridor and wrap around showers should impact the northeast plains the rest of this morning. Elsewhere, a short wave ridge working its way into central CO this morning will allow for just isolated to scattered light showers through midday. Light to moderate QG ascent early this morning will be replaced by QG descent or subsidence by midday. Later this afternoon and tonight, the next transition will kick in. The ridge will shift eastward, with increasing mid/upper level QG ascent redeveloping ahead of the next storm system. Increasing mid level instability this afternoon will allow for primarily scattered showers this afternoon with a few embedded thunderstorms. I do not anticipate any storms as strong as what occurred yesterday, but small hail and gusty outflow winds may accompany these storms. For tonight, increasing QG ascent with a diffluent pattern ahead of the trough will allow for snow to increase in coverage and intensity in the mountains, especially after midnight. Consequently, a winter storm watch will remain in effect starting tonight through Saturday night. Another concern will be the higher foothills tonight, especially for elevations above 8500 feet. The impacts will be strongest for these areas after 12z Saturday, but snow could get started a little earlier, so we included zones 35 and 36 in a winter storm watch as well starting around midnight. && .LONG TERM /Saturday through Thursday/... Issued at 304 AM MDT Fri Apr 26 2024 Upper level low will be located near the Four Corners 12Z Saturday. The low slowly travels east-northeast across southern Colorado Saturday and Saturday night. The low eventually lifts northeast of Colorado by Sunday morning. Models are in good agreement on the track and timing of this system. Will see strong lift from the low and an easterly upslope flow across the Front Range. Rain and snow become widespread early to mid Saturday morning and continues through at least Saturday evening. Precipitation amounts for the Front Range and near by plains have been running in the 1.50 to 3.00 inch range the last several model runs. One challenging part of this system will be the snow level. Wet bulb zero heights greatly vary in the models, anywhere from 7000 feet to a little over 9000 feet. With precipitation rates expected to be moderate to heavy, will lower the snow level some. Thinking the snow level ends up 7000 to 8000 feet. Will issue a Winter Storm Watch for the foothills. Areas above 8000 feet are expected to see mostly snow come Saturday with 12-18 inches possible. Rain and snow is expected to come to an end by Sunday morning along the Front Range as the upper level low lifts northeast of Colorado and a northwest downslope develops. Over the plains, rain should linger into Sunday morning. Cross sections indicate there should be enough moisture embedded in the northwest flow aloft to produce snow showers over the mountains Sunday with rain in the lower valleys. Additional snowfall is expected to be light on Sunday so plan on ending the Winter Storm Watch at 6AM Sunday morning. Some of the showers may survive onto the plains Sunday with additional rainfall amounts on the light side (less than a quarter inch). Westerly flow aloft to prevail for much of next week, Monday through Thursday. Main storm track will be north of Colorado with the storm systems passing over the Northern Rockies. The first wave next week passing north of Colorado is on track to be late Monday. This will bring a chance for showers and storms to the northern mountains. A cold front associated with the wave will drop south across Colorado Monday night. Not much cold air behind it with highs climbing back to around 70 degrees over northeast Colorado on Tuesday. A second wave will pass north of the state sometime Wednesday and it sends a cold front south across northeast Colorado. There are some timing differences with this system, so highs are a little more uncertain than other days. Best lift and chance for precipitation stays north of Colorado, but there's a chance for isolated showers and storms Wednesday/Wednesday night. && .AVIATION /12Z TAFS through 12Z Saturday/... Issued at 518 AM MDT Fri Apr 26 2024 Ceilings mainly from 8000 to 10000 feet this morning, as most of the showers have shifted to the east of the terminals. This should continue through midday. Light southwest winds this morning should shift northwest-north after 14z with gusts 20-25 kts possible until around 22z, then the winds will shift to the northeast. Convective showers will increase by 22z with lowering ceilings expected. Broken-overcast ceilings around 4000-6000 feet will develop after 22z, then MVFR ceilings and visibilities by 04z this evening. East/northeast winds tonight 7-11 kts with MVFR/IFR ceilings/visibilities restrictions developing after 08z as the rain increases. && .BOU WATCHES/WARNINGS/ADVISORIES... Winter Storm Watch from 6 PM MDT this evening through late Saturday night for COZ033-034. Winter Storm Watch from late tonight through late Saturday night for COZ035-036. && UPDATE...Rodriguez SHORT TERM...Cooper LONG TERM...Meier AVIATION...Cooper
Hazardous weather outlook, Apr 26, 11:34 AM MDT, 2 hours 2 minutes before
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 1134 AM MDT Fri Apr 26 2024 COZ030>051-271745- Jackson County Below 9000 Feet- West Jackson and West Grand Counties Above 9000 Feet- Grand and Summit Counties Below 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Central and Southeast Park County- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Logan County-Washington County-Sedgwick County-Phillips County- 1134 AM MDT Fri Apr 26 2024 This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight Moderate rain develops in the urban corridor and foothills this evening, with moderate snow in the mountains leading to deteriorating conditions overnight. .DAYS TWO THROUGH SEVEN...Saturday through Thursday A strong spring storm system will move across Colorado Saturday bringing widespread rain and mountain snow. The snow level is expected to fall to 7000 to 8000 feet. Travel into the higher foothills and mountains will likely be very difficult with 1 to 3 feet of snow expected, with the heavier amounts expected to be in the northern mountains. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today or tonight.
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 4:13 PM MDT | Special Weather Statement | BOU | Elbert | 47 min |
| Apr 26, 4:52 PM MDT | Special Weather Statement | BOU | Broomfield | 23 min |
Nearby
Winter Storm Warnings in Colorado, 2024Every winter storm warning in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.