Alert archive / Wyoming / High Wind Watches in 2021
High Wind Watch 38, NWS Cheyenne, WY
NWS Cheyenne, WY issued this high wind watch at Nov 20, 2021, 2:37 AM MST for Albany County, Carbon County, Wyoming. It took effect at Nov 21, 2021, 5:00 AM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Nov 20, 2021, 2:37 AM MST (09:37 UTC)
- In effect from
- Nov 21, 2021, 5:00 AM MST
- Expired
- Nov 20, 2021, 2:17 PM MST
- In force
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Carbon County, WY
The radar
The Cheyenne radar (KCYS), 140 km from the middle of the area, began a volume at 09:37 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 00:00Z, 9.6 hours before the alert went out and 230 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
- 1981 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
683 WWUS75 KCYS 200937 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 237 AM MST Sat Nov 20 2021 WYZ110-210000- /O.NEW.KCYS.HW.A.0038.211121T1200Z-211122T1800Z/ North Snowy Range Foothills- Including the cities of Arlington and Elk Mountain 237 AM MST Sat Nov 20 2021 ...HIGH WIND WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY MORNING... * WHAT...West to southwest winds 35 to 45 MPH with gusts up to 65 MPH possible. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80 between Laramie and Rawlins. * WHEN...5 AM MST Sunday until 11 AM 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, particularly along 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. && $$ CLH
1 follow-up statement
301 WWUS75 KCYS 202117 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 217 PM MST Sat Nov 20 2021 WYZ110-211100- /O.UPG.KCYS.HW.A.0038.211121T1200Z-211122T1800Z/ /O.NEW.KCYS.HW.W.0045.211121T1800Z-211122T1800Z/ North Snowy Range Foothills- Including the cities of Arlington and Elk Mountain 217 PM MST Sat Nov 20 2021 ...HIGH WIND WARNING IN EFFECT FROM 11 AM SUNDAY TO 11 AM MST MONDAY... * WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected especially late in day on Sunday and Sunday night. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain. * WHEN...From 11 AM Sunday to 11 AM MST Monday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, particularly along north to south oriented roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 20, 2:17 PM MST | High Wind Warning | CYS | Albany, Carbon, Laramie, Platte | 45 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.