Alert archive / Colorado / High Wind Watches in 2021
High Wind Watch 2, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this high wind watch at Feb 6, 2021, 3:47 AM MST for 9 counties in Colorado. It took effect at Feb 6, 2021, 11:00 PM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 6, 2021, 3:47 AM MST (10:47 UTC)
- In effect from
- Feb 6, 2021, 11:00 PM MST
- Expired
- Feb 6, 2021, 11:18 AM MST
- In force
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Gilpin County, CO, Grand County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 87 km from the middle of the area, began a volume at 10:49 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.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 10.8 hours before the alert went out and 200 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
- 2537 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
456 WWUS75 KBOU 061047 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 347 AM MST Sat Feb 6 2021 COZ034>036-061900- /O.NEW.KBOU.HW.A.0002.210207T0600Z-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 347 AM MST Sat Feb 6 2021 ...HIGH WIND WATCH IN EFFECT FROM THIS EVENING THROUGH SUNDAY MORNING... * WHAT...West winds 30 to 40 mph with gusts up to 75 mph possible. * 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...From this evening through Sunday 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. In addition blowing snow over the higher mountain passes will lead to very poor visbility and difficult travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$
1 follow-up statement
818 WWUS75 KBOU 061818 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 1118 AM MST Sat Feb 6 2021 COZ034>036-070500- /O.UPG.KBOU.HW.A.0002.210207T0600Z-210207T1500Z/ /O.NEW.KBOU.HW.W.0003.210207T0600Z-210207T1500Z/ South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 1118 AM MST Sat Feb 6 2021 ...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 8 AM MST SUNDAY... * WHAT...West winds 30 to 50 mph with gusts up to 80 mph expected. * WHERE...The Mountains of Summit County, the Mosquito Range, and the Indian Peaks, The Northern Front Range Foothills and The Southern Front Range Foothills. The strongest winds will be above 7500 feet. * WHEN...From 11 PM this evening to 8 AM MST Sunday. * IMPACTS...Strong winds will blow unsecured objects around. Tree limbs could be blown down and a few power outages may result. Extensive blowing snow can be expected in areas with substantial snow cover. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Consider delaying travel during the period of high winds early Sunday. Loose outdoor items should be brought inside or secured properly. && $$ 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
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, 11:18 AM MST | High Wind Warning | BOU | Boulder, Broomfield, Clear Creek, Douglas, Gilpin, Grand and 5 more | 30 hr |
Nearby
High Wind Watches in Colorado, 2021Every high wind watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.