Alert archive / Wyoming / High Wind Watches in 2021
High Wind Watch 11, NWS Cheyenne, WY
NWS Cheyenne, WY issued this high wind watch at Feb 20, 2021, 1:23 PM MST for Laramie County, Wyoming. It took effect at Feb 21, 2021, 2:00 PM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 20, 2021, 1:23 PM MST (20:23 UTC)
- In effect from
- Feb 21, 2021, 2:00 PM MST
- Expired
- Feb 21, 2021, 2:52 AM MST
- In force
- Issued by
- NWS Cheyenne, WY
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 20 km from the middle of the area, began a volume at 20:22 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 12:00Z, 8.4 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
- 2205 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 183 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
077 WWUS75 KCYS 202023 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 123 PM MST Sat Feb 20 2021 WYZ106-110-116-117-211200- /O.UPG.KCYS.HW.A.0010.210221T1200Z-210223T1500Z/ /O.NEW.KCYS.HW.W.0017.210221T1200Z-210223T1500Z/ Central Laramie Range and Southwest Platte County- North Snowy Range Foothills-South Laramie Range- South Laramie Range Foothills- Including the cities of Bordeaux, Arlington, Elk Mountain, Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, and Horse Creek 123 PM MST Sat Feb 20 2021 ...HIGH WIND WARNING IN EFFECT FROM 5 AM SUNDAY TO 8 AM MST TUESDAY... * WHAT...West winds 40 to 50 mph with gusts up to 80 mph likely. Areas of blowing and drifting snow are also expected. * WHERE...Arlington along Interstate 80 between Laramie and Rawlins, South Laramie Range and adjacent Foothills including Interstate 80 between Laramie and Cheyenne, and Bordeaux along Interstate 25 between Chugwater and Wheatland. * WHEN...5 AM MST Sunday until 8 AM MST Tuesday. The strongest winds are expected late Sunday night into early Monday morning. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be an extreme risk for vehicle blow overs. Areas of blowing and drifting snow may also result in slick roads and reduced visibilities, especially along Interstate 80 between Rawlins and Laramie. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ WYZ118-211200- /O.NEW.KCYS.HW.A.0011.210221T2100Z-210223T0000Z/ Central Laramie County- Including the city of Cheyenne 123 PM MST Sat Feb 20 2021 ...HIGH WIND WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY AFTERNOON... * WHAT...West winds 35 to 45 mph with gusts up to 65 mph possible. * WHERE...Central Laramie County including the city of Cheyenne. * WHEN...2 PM MST Sunday until 5 PM MST Monday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, especially on north to south oriented roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ CLH
1 follow-up statement
228 WWUS75 KCYS 210952 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 252 AM MST Sun Feb 21 2021 WYZ118-230000- /O.UPG.KCYS.HW.A.0011.210221T2100Z-210223T0000Z/ /O.EXB.KCYS.HW.W.0017.210221T2100Z-210223T0000Z/ Central Laramie County- Including the city of Cheyenne 252 AM MST Sun Feb 21 2021 ...HIGH WIND WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 5 PM MST MONDAY... * WHAT...West winds 35 to 45 mph with gusts up to 65 mph expected. * WHERE...Central Laramie County County, including the city of Cheyenne. * WHEN...From 2 PM this afternoon to 5 PM MST Monday. The strongest winds are expected late Sunday night into early Monday morning. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, especially on north to south oriented roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ WYZ115-230000- /O.EXB.KCYS.HW.W.0017.210221T2100Z-210223T0000Z/ Laramie Valley- Including the cities of Bosler and Laramie 252 AM MST Sun Feb 21 2021 ...HIGH WIND WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 5 PM MST MONDAY... * WHAT...West winds 35 to 45 mph with gusts up to 65 mph expected. * WHERE...Laramie Valley County including the city of Laramie. * WHEN...From 2 PM this afternoon to 5 PM MST Monday. The strongest winds are expected late Sunday night into early Monday morning. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, especially on north to south oriented roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ WYZ106-110-116-117-230000- /O.EXT.KCYS.HW.W.0017.210221T1200Z-210223T1800Z/ Central Laramie Range and Southwest Platte County- North Snowy Range Foothills-South Laramie Range- South Laramie Range Foothills- Including the cities of Bordeaux, Arlington, Elk Mountain, Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, and Horse Creek 252 AM MST Sun Feb 21 2021 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...West winds 40 to 50 mph with gusts up to 80 mph likely. Areas of blowing and drifting snow are also expected. * WHERE...Arlington along Interstate 80 between Laramie and Rawlins, South Laramie Range and adjacent Foothills including Interstate 80 between Laramie and Cheyenne, and Bordeaux along Interstate 25 between Chugwater and Wheatland. * WHEN...Until 11 AM MST Tuesday. The strongest winds are expected late Sunday night into early Monday morning. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be an extreme risk for vehicle blow overs. Areas of blowing and drifting snow may also result in slick roads and reduced visibilities, especially along Interstate 80 between Rawlins and Laramie. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ Braun
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 2:23 AM MST | High Wind Watch | CYS | Albany, Carbon, Laramie, Platte | 11 hr |
| Feb 20, 1:23 PM MST | High Wind Warning | CYS | Albany, Carbon, Converse, Goshen, Laramie, Platte | 3 days |
| Feb 20, 3:30 PM MST | Snow Squall Warning | CYS | Albany, Laramie | 30 min |
Nearby
High Wind Watches in Wyoming, 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.