Alert archive / Wyoming / High Wind Watches in 2021
High Wind Watch 13, NWS Riverton, WY
NWS Riverton, WY issued this high wind watch at Nov 22, 2021, 3:14 AM MST for 6 counties in Wyoming. It took effect at Nov 23, 2021, 3:00 AM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Nov 22, 2021, 3:14 AM MST (10:14 UTC)
- In effect from
- Nov 23, 2021, 3:00 AM MST
- Expired
- Nov 22, 2021, 3:01 PM MST
- In force
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Hot Springs County, WY, Natrona County, WY, Park County, WY, Sublette County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 19 km from the middle of the area, began a volume at 10:17 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, 10.2 hours before the alert went out and 25 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
- 3398 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 246 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
723 WWUS75 KRIW 221014 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 314 AM MST Mon Nov 22 2021 WYZ002-015-019-020-222300- /O.NEW.KRIW.HW.A.0013.211123T1000Z-211123T2200Z/ Absaroka Mountains-Wind River Mountains East- Green Mountains and Rattlesnake Range- Natrona County Lower Elevations- Including the cities of Jeffrey City and Casper 314 AM MST Mon Nov 22 2021 ...HIGH WIND WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... * WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph possible. * WHERE...Absaroka Mountains, Wind River Mountains East, Green Mountains and Rattlesnake Range and Natrona County Lower Elevations. * WHEN...From late tonight through Tuesday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially 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. && $$ For more information from the National Weather Service visit https://weather.gov/riw
1 follow-up statement
219 WWUS75 KRIW 222201 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 301 PM MST Mon Nov 22 2021 WYZ002-015-231400- /O.UPG.KRIW.HW.A.0013.211123T1000Z-211123T2200Z/ /O.NEW.KRIW.HW.W.0017.211123T1000Z-211123T2200Z/ Absaroka Mountains-Wind River Mountains East- 301 PM MST Mon Nov 22 2021 ...HIGH WIND WARNING IN EFFECT FROM 3 AM TO 3 PM MST TUESDAY... * WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Absaroka Mountains and Wind River Mountains East. * WHEN...From 3 AM to 3 PM MST Tuesday. * IMPACTS...Strong winds will enhance the blowover risk for lightweight and high-profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. Use caution if you must drive. && $$ WYZ019-231400- /O.UPG.KRIW.HW.A.0013.211123T1000Z-211123T2200Z/ /O.NEW.KRIW.HW.W.0017.211123T1000Z-211123T2200Z/ Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 301 PM MST Mon Nov 22 2021 ...HIGH WIND WARNING IN EFFECT FROM 3 AM TO 3 PM MST TUESDAY... * WHAT...Southwest winds 20 to 35 mph with gusts up to 60 mph expected. * WHERE...Green Mountains and Rattlesnake Range. * WHEN...From 3 AM to 3 PM MST Tuesday. * IMPACTS...Strong winds will enhance the blowover risk for lightweight and high-profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Low relative humidity will accompany this wind, creating elevated fire weather conditions. Fires could spread quickly with any new starts. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. Use caution if you must drive. && $$ WYZ020-231400- /O.UPG.KRIW.HW.A.0013.211123T1000Z-211123T2200Z/ /O.NEW.KRIW.HW.W.0017.211123T1000Z-211123T2200Z/ Natrona County Lower Elevations- Including the city of Casper 301 PM MST Mon Nov 22 2021 ...HIGH WIND WARNING IN EFFECT FROM 3 AM TO 3 PM MST TUESDAY... * WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Natrona County Lower Elevations. * WHEN...From 3 AM to 3 PM MST Tuesday. * IMPACTS...Strong winds will enhance the blowover risk for lightweight and high-profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Low relative humidity will accompany this wind, creating elevated to critical fire weather conditions. Fires could spread quickly with any new starts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. Use caution if you must drive, and watch out for any fallen tree branches. && $$ For more information from the National Weather Service visit https://weather.gov/riw
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 22, 3:01 PM MST | High Wind Warning | RIW | Fremont, Hot Springs, Natrona, Park, Sublette, Sweetwater | 24 hr |
| Nov 22, 3:23 PM MST | Fire Weather Watch | RIW | Johnson, Natrona | 12 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.