Alert archive / Colorado / High Wind Watches in 2021
High Wind Watch 1, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this high wind watch at Jan 11, 2021, 8:11 PM MST for 16 counties in Colorado. It took effect at Jan 13, 2021, 12:00 PM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 11, 2021, 8:11 PM MST (03:11 UTC)
- In effect from
- Jan 13, 2021, 12:00 PM MST
- Expired
- Jan 13, 2021, 1:46 AM MST
- In force
- Issued by
- NWS Denver/Boulder, CO
Counties Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Douglas County, CO, Gilpin County, CO, Jefferson County, CO, Larimer County, CO, Logan County, CO, Morgan County, CO, Park County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 31 km from the middle of the area, began a volume at 03:14 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, 3.2 hours before the alert went out and 104 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
- 4276 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
109 WWUS75 KBOU 120311 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 811 PM MST Mon Jan 11 2021 COZ035-036-038-039-121300- /O.NEW.KBOU.HW.A.0001.210113T0900Z-210114T1200Z/ 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- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, Westcreek, Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, and Longmont 811 PM MST Mon Jan 11 2021 ...HIGH WIND WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH LATE WEDNESDAY NIGHT... * WHAT...West winds 20 to 40 mph with gusts up to 75 mph possible. * WHERE...The Northern Front Range Foothills, The Southern Front Range Foothills, Larimer County below 6000 feet and Northwest Weld County and Boulder and the western suburbs of Denver. * WHEN...From late Tuesday night through late Wednesday night. * 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... 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. && $$
5 follow-up statements
694 WWUS75 KBOU 121452 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 752 AM MST Tue Jan 12 2021 COZ035-036-038-039-122300- /O.CON.KBOU.HW.A.0001.210113T0900Z-210114T1200Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, Westcreek, Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, and Longmont 752 AM MST Tue Jan 12 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH LATE WEDNESDAY NIGHT... * WHAT...West winds 20 to 40 mph with gusts up to 75 mph possible. * WHERE...The Northern Front Range Foothills, The Southern Front Range Foothills, Larimer County below 6000 feet and Northwest Weld County and Boulder and the western suburbs of Denver. * WHEN...From late Tuesday night through late Wednesday night. * IMPACTS...Strong winds will blow unsecured objects around. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$
976 WWUS75 KBOU 121814 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 1114 AM MST Tue Jan 12 2021 COZ035-036-038-039-130215- /O.CON.KBOU.HW.A.0001.210113T0900Z-210114T1200Z/ 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- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, Westcreek, Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, and Longmont 1114 AM MST Tue Jan 12 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE WEDNESDAY NIGHT... * WHAT...West winds 20 to 40 mph with gusts up to 75 mph possible. * WHERE...The Northern Front Range Foothills, The Southern Front Range Foothills, Larimer County below 6000 feet and Northwest Weld County and Boulder and the western suburbs of Denver. * WHEN...From Wednesday afternoon through late Wednesday night. * 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... 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. && $$
196 WWUS75 KBOU 121824 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 1124 AM MST Tue Jan 12 2021 COZ035-036-038-039-130230- /O.EXT.KBOU.HW.A.0001.210113T1900Z-210114T1200Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, Westcreek, Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, and Longmont 1124 AM MST Tue Jan 12 2021 ...HIGH WIND WATCH NOW IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE WEDNESDAY NIGHT... * WHAT...West winds 20 to 40 mph with gusts up to 75 mph possible. * WHERE...The Northern Front Range Foothills, The Southern Front Range Foothills, Larimer County below 6000 feet and Northwest Weld County and Boulder and the western suburbs of Denver. * WHEN...From Wednesday afternoon through late Wednesday night. * IMPACTS...Strong winds will blow unsecured objects around. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ Hiris
424 WWUS75 KBOU 122222 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 322 PM MST Tue Jan 12 2021 ...HIGH WINDS POSSIBLE ACROSS THE FOOTHILLS STARTING LATE WEDNESDAY AND ON THE PLAINS STARTING EARLY THURSDAY... A strong cold front will move across northern Colorado Wednesday night. It will become windy in the mountains Wednesday afternoon, with the winds becoming stronger overnight. The strong winds will spread across the plains Wednesday night. It will remain windy across these areas through Friday, but the greatest threat of high winds will be Thursday morning. Residents should prepare for a long windy period. Secure loose objects and consider removing outdoor holiday decorations. Prepare for possible power outages. Drivers of high profile or light weight vehicles should monitor conditions and avoid travel during the windiest period which will likely be the early morning hours and during the day Thursday. COZ042>045-048>051-131200- /O.EXB.KBOU.HW.A.0001.210114T0700Z-210115T0100Z/ Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- Including Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, Roggen, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, Leader, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 322 PM MST Tue Jan 12 2021 ...HIGH WIND WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY AFTERNOON... * WHAT...Northwest winds 30 to 40 mph with gusts up to 65 mph possible. * WHERE...Northeast Weld County, Central and Southern Weld County, Morgan County, Eastern Adams and Arapahoe Counties, Logan County, Washington County, Sedgwick County and Phillips County. * WHEN...From late Wednesday night through Thursday 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... 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. && $$ COZ035-036-038-039-131200- /O.EXT.KBOU.HW.A.0001.210113T1900Z-210115T1900Z/ Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, Westcreek, Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, and Longmont 322 PM MST Tue Jan 12 2021 ...HIGH WIND WATCH NOW IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH FRIDAY MORNING... * WHAT...Northwest winds 30 to 40 mph with gusts up to 80 mph possible. * WHERE...The Southern Front Range Foothills, The Northern Front Range Foothills, Boulder and the western suburbs of Denver and Larimer County below 6000 feet and Northwest Weld County. * WHEN...From Wednesday afternoon through Friday morning. The high winds are most likely Thursday morning. * IMPACTS...Strong winds will blow unsecured objects around. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ Hiris/Gimmestad
257 WWUS75 KBOU 130846 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 146 AM MST Wed Jan 13 2021 ...HIGH WINDS ACROSS THE FOOTHILLS STARTING LATE TODAY AND ON THE PLAINS STARTING EARLY THURSDAY... It will become windy in the mountains this afternoon, with the winds becoming stronger overnight as a cold front moves through the region. The strong winds will spread across the plains tonight as the cold front moves through. It will remain windy across these areas through Friday, but the greatest threat of high winds will be Thursday morning. Residents should prepare for a long windy period. Secure loose objects and consider removing outdoor holiday decorations. Prepare for possible power outages. Drivers of high profile or light weight vehicles should monitor conditions and avoid travel during the windiest period which will likely be the early morning hours and during the day Thursday. COZ035-036-038-039-131700- /O.UPG.KBOU.HW.A.0001.210113T1900Z-210115T1900Z/ /O.NEW.KBOU.HW.W.0001.210113T1900Z-210115T1900Z/ 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- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, Westcreek, Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, and Longmont 146 AM MST Wed Jan 13 2021 ...HIGH WIND WARNING IN EFFECT FROM NOON TODAY TO NOON MST FRIDAY... * WHAT...Northwest winds 35 to 45 mph with gusts up to 75 mph expected. * WHERE...The Northern Front Range Foothills, The Southern Front Range Foothills, Larimer County below 6000 feet and Northwest Weld County and Boulder and the western suburbs of Denver. * WHEN...From noon today to noon MST Friday. * 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. * ADDITIONAL DETAILS...There may be a temporary lull in the strong winds Thursday morning, before picking up again in the afternoon. 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. && $$ COZ042>045-048>051-131700- /O.UPG.KBOU.HW.A.0001.210114T0700Z-210115T0100Z/ /O.NEW.KBOU.HW.W.0001.210114T0700Z-210115T0100Z/ Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- Including Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, Roggen, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, Leader, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 146 AM MST Wed Jan 13 2021 ...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MST THURSDAY... * WHAT...Northwest winds 35 to 45 mph with gusts up to 60 mph expected. * WHERE...Northeast Weld County, Central and Southern Weld County, Morgan County, Eastern Adams and Arapahoe Counties, Logan County, Washington County, Sedgwick County and Phillips County. * WHEN...From midnight tonight to 6 PM MST Thursday. * IMPACTS...Strong winds will blow unsecured objects around. Tree limbs could be blown down and a few power outages may result. Travel will be difficult for high profile vehicles. * ADDITIONAL DETAILS...There may be a temporary lull in the strong winds Thursday morning, before picking up again in the afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Strong winds may lead to property damage. Hazardous driving conditions due to powerful cross winds will pose a serious risk for drivers, especially for light weight and high profile vehicles. Loose outdoor items should be brought inside or secured properly. && $$
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.