Alert archive / Colorado / High Wind Warnings in 2021
High Wind Warning 3, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this high wind warning at Feb 6, 2021, 11:18 AM MST for 11 counties in Colorado. It took effect at Feb 6, 2021, 11:00 PM MST. It was in force for 18 hr. 17 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
- Feb 6, 2021, 11:18 AM MST (18:18 UTC)
- In effect from
- Feb 6, 2021, 11:00 PM MST
- Expired
- Feb 7, 2021, 5:00 PM MST
- In force
- 18 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Broomfield 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), 90 km from the middle of the area, began a volume at 18:16 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 |
|---|---|---|---|
| Feb 7, 1:15 AM MST | NON-TSTM WND GST 71 | 1 S Copper Mountain, CO | AWOS STATION KCCU RED CLIFF PASS. |
| Feb 7, 1:54 AM MST | NON-TSTM WND GST 50 | 1 Ene Tabernash, CO | MESONET STATION CO139 040E225 US-40 AT FRASER FLATS. |
| Feb 7, 2:14 AM MST | NON-TSTM WND GST 58 | 3 Sw Elkdale, CO | MESONET STATION CO138 040E220 US-40 AT RED DIRT HILL. |
| Feb 7, 2:42 AM MST | NON-TSTM WND GST 51 | Virginia Dale, CO | MESONET STATION CO036 287N381 VIRGINIA DALE. |
| Feb 7, 2:46 AM MST | NON-TSTM WND GST 61 | 11 Nne Kremmling, CO | MESONET STATION GSPC2 GUNSIGHT. |
| Feb 7, 8:55 AM MST | NON-TSTM WND GST 54 | 3 Se Tolland, CO | AWOS STATION KC99 DAKOTA HILL. |
| Feb 7, 10:27 AM MST | NON-TSTM WND GST 50 | 12 Wsw Tabernash, CO | MESONET STATION KSEC2 KEYSER RIDGE. |
| Feb 7, 10:35 AM MST | NON-TSTM WND GST 54 | 3 Ese Buckeye, CO | MESONET STATION BEYC2 BUCKEYE. |
| Feb 7, 10:45 AM MST | NON-TSTM WND GST 61 | 2 Sw Broomfield, CO | AWOS STATION KBJC BROOMFIELD JEFFC. |
| Feb 7, 11:00 AM MST | NON-TSTM WND GST 58 | 1 N Glen Haven, CO | MESONET STATION EW4490 GLEN HAVEN. |
| Feb 7, 11:00 AM MST | NON-TSTM WND GST 58 | 3 Ssw Boulder, CO | NCAR MESA LAB. |
| Feb 7, 11:20 AM MST | NON-TSTM WND GST 63 | 3 Sw Rocky Flats, CO | MESONET STATION CO109 093N008 JCT. 93 & 72. |
| Feb 7, 11:35 AM MST | NON-TSTM WND GST 51 | 1 Ese Granby, CO | AWOS STATION KGNB GRANBY GRAND CO. |
| Feb 7, 11:45 AM MST | NON-TSTM WND GST 56 | 3 Nne White Ranch Open, CO | MESONET STATION UP709 2.8 NE WHITE RANCH OPEN SPACE (UPR). |
| Feb 7, 12:00 PM MST | NON-TSTM WND GST 54 | 3 Se Niwot, CO | MESONET STATION FW3675 LAFAYETTE. |
| Feb 7, 12:09 PM MST | NON-TSTM WND GST 52 | 1 Wsw Lawson, CO | MESONET STATION CO147 0.7 MI E OF US-40. |
| Feb 7, 12:09 PM MST | NON-TSTM WND GST 53 | 1 N Georgetown, CO | MESONET STATION CO162 0.85 MI E OF 15TH ST GEORGETOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 6.3 hours before the alert went out and 202 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
- 1898 m above ground
- 0-6 km bulk shear
- 89 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 213 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
818 WWUS75 KBOU 061818 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 1118 AM MST Sat Feb 6 2021 COZ034>036-070500- /O.UPG.KBOU.HW.A.0002.210207T0600Z-210207T1500Z/ /O.NEW.KBOU.HW.W.0003.210207T0600Z-210207T1500Z/ 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- Including Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 1118 AM MST Sat Feb 6 2021 ...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 8 AM MST SUNDAY... * WHAT...West winds 30 to 50 mph with gusts up to 80 mph expected. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. The strongest winds will be above 7500 feet. * WHEN...From 11 PM this evening to 8 AM MST Sunday. * IMPACTS...Strong winds will blow unsecured objects around. Tree limbs could be blown down and a few power outages may result. Extensive blowing snow can be expected in areas with substantial snow cover. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Consider delaying travel during the period of high winds early Sunday. Loose outdoor items should be brought inside or secured properly. && $$ COZ033-070500- /O.NEW.KBOU.HW.W.0003.210207T0600Z-210207T1500Z/ South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, and Willow Creek Pass 1118 AM MST Sat Feb 6 2021 ...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 8 AM MST SUNDAY... * WHAT...West winds 30 to 50 mph with gusts up to 80 mph expected. * WHERE...Rocky Mountain National Park and the Medicine Bow Range. * WHEN...From 11 PM this evening to 8 AM MST Sunday. * IMPACTS...Strong winds will blow unsecured objects around. Extensive blowing snow can be expected with localized blizzard conditions. Travel over Cameron Pass will become difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Consider delaying travel during the period of high winds early Sunday. Loose outdoor items should be brought inside or secured properly. && $$ Gimmestad
4 follow-up statements
854 WWUS75 KBOU 070429 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 929 PM MST Sat Feb 6 2021 COZ033>036-071500- /O.CON.KBOU.HW.W.0003.210207T0600Z-210207T1500Z/ 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- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 929 PM MST Sat Feb 6 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 AM MST SUNDAY... * WHAT...West winds 30 to 50 mph with gusts up to 80 mph expected. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. The strongest winds will be above 7500 feet. * WHEN...From 11 PM this evening to 8 AM MST Sunday. * IMPACTS...Strong winds will blow unsecured objects around. Tree limbs could be blown down and a few power outages may result. Extensive blowing snow can be expected in areas with substantial snow cover. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. && $$
702 WWUS75 KBOU 071137 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 437 AM MST Sun Feb 7 2021 COZ039-071945- /O.EXB.KBOU.HW.W.0003.210207T1400Z-210207T2200Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Arvada, Boulder, Golden, Lakewood, and Longmont 437 AM MST Sun Feb 7 2021 ...HIGH WIND WARNING IN EFFECT UNTIL 3 PM MST THIS AFTERNOON... * WHAT...West winds 30 to 40 mph with gusts up to 65 mph expected. * WHERE...Boulder and the western suburbs of Denver. * WHEN...Until 3 PM MST this afternoon. * IMPACTS...Strong winds will blow unsecured objects around. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. && $$ COZ033>036-071800- /O.EXT.KBOU.HW.W.0003.000000T0000Z-210207T1800Z/ 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- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 437 AM MST Sun Feb 7 2021 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...West winds 30 to 50 mph with gusts up to 80 mph expected. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. The strongest winds will be above 7500 feet. * WHEN...Until 11 AM MST this morning. * IMPACTS...Strong winds will blow unsecured objects around. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. && $$
726 WWUS75 KBOU 071613 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 913 AM MST Sun Feb 7 2021 COZ033>036-039-080000- /O.EXT.KBOU.HW.W.0003.000000T0000Z-210208T0000Z/ 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- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, Westcreek, Arvada, Boulder, Golden, Lakewood, and Longmont 913 AM MST Sun Feb 7 2021 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...West winds 30 to 50 mph with gusts up to 80 mph expected. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Strong winds will blow unsecured objects around. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. && $$
259 WWUS75 KBOU 080006 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 506 PM MST Sun Feb 7 2021 COZ033>036-039-080115- /O.EXP.KBOU.HW.W.0003.000000T0000Z-210208T0000Z/ 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- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, Westcreek, Arvada, Boulder, Golden, Lakewood, and Longmont 506 PM MST Sun Feb 7 2021 ...HIGH WIND WARNING HAS EXPIRED... Strong winds across the Front Range will continue to diminish early this evening. $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 6, 3:42 AM MST | Winter Weather Advisory | BOU | Boulder, Grand, Jackson, Larimer, Park | 37 hr |
| Feb 6, 3:47 AM MST | High Wind Watch | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jefferson and 3 more | 8 hr |
Nearby
High Wind Warnings in Colorado, 2021Every high wind 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.