Alert archive / Wyoming / High Wind Watches in 2021
High Wind Watch 9, NWS Cheyenne, WY
NWS Cheyenne, WY issued this high wind watch at Feb 17, 2021, 2:32 PM MST for 4 counties in Wyoming. It took effect at Feb 18, 2021, 4:00 PM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 17, 2021, 2:32 PM MST (21:32 UTC)
- In effect from
- Feb 18, 2021, 4:00 PM MST
- Expired
- Feb 18, 2021, 3:05 AM MST
- In force
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Carbon County, WY, Laramie County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 88 km from the middle of the area, began a volume at 21:32 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
Riverton, WY (KRIW), launched 12:00Z, 9.5 hours before the alert went out and 278 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
- 1069 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
749 WWUS75 KCYS 172132 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 232 PM MST Wed Feb 17 2021 WYZ106-110-116-117-181200- /O.NEW.KCYS.HW.A.0009.210218T2300Z-210220T0000Z/ 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 232 PM MST Wed Feb 17 2021 ...HIGH WIND WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY AFTERNOON... * WHAT...West winds 35 to 45 mph with gusts up to 65 mph possible. * 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 PM MST Thursday until 5 PM MST Friday. * 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. Areas of blowing and drifting snow may also result in slick roads and reduced visibilities. 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. && $$ CLH
1 follow-up statement
057 WWUS75 KCYS 181005 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 305 AM MST Thu Feb 18 2021 WYZ106-110-116-117-200000- /O.UPG.KCYS.HW.A.0009.210218T2300Z-210220T0000Z/ /O.NEW.KCYS.HW.W.0016.210218T2300Z-210220T0000Z/ Central Laramie Range and Southwest Platte County- North Snowy Range Foothills-South Laramie Range- South Laramie Range Foothills- Including the cities of Bordeaux, Arlington, Elk Mountain, Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, and Horse Creek 305 AM MST Thu Feb 18 2021 ...HIGH WIND WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 5 PM MST FRIDAY... * WHAT...West winds 35 to 45 mph with gusts up to 70 mph expected. * WHERE...Arlington along Interstate 80 between Laramie and Rawlins, South Laramie Range and adjacent Foothills including Interstate 80 between Laramie and Cheyenne, and Bordeaux along Interstate 25 between Chugwater and Wheatland. * WHEN...From 4 PM this afternoon to 5 PM MST Friday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs. Areas of blowing and drifting snow may also result in slick roads and reduced visibilities, especially along I-80 between Rawlins and Laramie. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ WYZ107-115-118-200000- /O.NEW.KCYS.HW.W.0016.210219T1600Z-210220T0000Z/ East Platte County-Laramie Valley-Central Laramie County- Including the cities of Wheatland, Guernsey, Bosler, Laramie, and Cheyenne 305 AM MST Thu Feb 18 2021 ...HIGH WIND WARNING IN EFFECT FROM 9 AM TO 5 PM MST FRIDAY... * WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...East Platte County, Laramie Valley and Central Laramie County Counties, including Cheyenne, Laramie, and Wheatland. * WHEN...From 9 AM to 5 PM MST Friday. * 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. Areas of drifting snow may also result in slick roads and reduced visibilities. 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. && $$ AB
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 17, 12:06 PM MST | Winter Storm Warning | CYS | Albany, Laramie | 15 hr |
| Feb 17, 12:06 PM MST | Winter Weather Advisory | CYS | Albany, Laramie | 15 hr |
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.