Alert archive / Wyoming / High Wind Warnings in 2021
High Wind Warning 17, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Nov 22, 2021, 3:01 PM MST for 6 counties in Wyoming. It took effect at Nov 23, 2021, 3:00 AM MST. It was in force for 12 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 22, 2021, 3:01 PM MST (22:01 UTC)
- In effect from
- Nov 23, 2021, 3:00 AM MST
- Expired
- Nov 23, 2021, 3:00 PM MST
- In force
- 12 hr
- 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 22:03 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 23, 9:35 AM MST | NON-TSTM WND GST 61 | 6 Nw Mills, WY | ASOS STATION KCPR CASPER AIRPORT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 10.0 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
- 2498 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 241 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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. && $$ For more information from the National Weather Service visit https://weather.gov/riw
2 follow-up statements
245 WWUS75 KRIW 231006 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 306 AM MST Tue Nov 23 2021 WYZ002-015-232200- /O.CON.KRIW.HW.W.0017.000000T0000Z-211123T2200Z/ Absaroka Mountains-Wind River Mountains East- 306 AM MST Tue Nov 23 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MST THIS AFTERNOON... * WHAT...West winds 30 to 40 mph with gusts up to 70 mph. * WHERE...Absaroka Mountains and Wind River Mountains East. * WHEN...Until 3 PM MST this afternoon. * IMPACTS...Strong winds will enhance the blowover risk for lightweight and high-profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ WYZ019-232200- /O.CON.KRIW.HW.W.0017.000000T0000Z-211123T2200Z/ Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 306 AM MST Tue Nov 23 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MST THIS AFTERNOON... * WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph. * WHERE...Green Mountains and Rattlesnake Range. * WHEN...Until 3 PM MST this afternoon. * 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. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ WYZ020-232200- /O.CON.KRIW.HW.W.0017.000000T0000Z-211123T2200Z/ Natrona County Lower Elevations- Including the city of Casper 306 AM MST Tue Nov 23 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MST THIS AFTERNOON... * WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph. * WHERE...Natrona County Lower Elevations. * WHEN...Until 3 PM MST this afternoon. * IMPACTS...Strong winds will enhance the blowover risk for lightweight and high-profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Low relative humidity will accompany this wind, creating elevated to critical fire weather conditions. Fires could spread quickly with any new starts. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ For more information from the National Weather Service visit https://weather.gov/riw
494 WWUS75 KRIW 232153 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 253 PM MST Tue Nov 23 2021 WYZ002-015-232300- /O.EXP.KRIW.HW.W.0017.000000T0000Z-211123T2200Z/ Absaroka Mountains-Wind River Mountains East- 253 PM MST Tue Nov 23 2021 ...HIGH WIND WARNING WILL EXPIRE AT 3 PM MST THIS AFTERNOON... The high wind warning for the Absaroka Mountains and east side of the Wind River Mountains is being allowed to expire this afternoon. Winds have decreased today with gusts between 30 and 45 mph, but were higher earlier with gusts between 65 to 70 mph in some locations. A storm system will be moving through the area tonight, bringing more gusty wind and some snow. $$ WYZ019-232300- /O.EXP.KRIW.HW.W.0017.000000T0000Z-211123T2200Z/ Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 253 PM MST Tue Nov 23 2021 ...HIGH WIND WARNING WILL EXPIRE AT 3 PM MST THIS AFTERNOON... The high wind warning for the central Wyoming mountains is being allowed to expire this afternoon. Wind speeds are decreasing this afternoon with gusts between 30 to 45 mph, though winds gusted as high as 65 mph earlier. A storm system will be moving through the area tonight into Wednesday, bringing more gusty wind and some snow. $$ WYZ020-232300- /O.EXP.KRIW.HW.W.0017.000000T0000Z-211123T2200Z/ Natrona County Lower Elevations- Including the city of Casper 253 PM MST Tue Nov 23 2021 ...HIGH WIND WARNING WILL EXPIRE AT 3 PM MST THIS AFTERNOON... The high wind warning for Natrona County is being allowed to expire this afternoon. Wind speeds are decreasing with gusts 35 to 40 mph. Gusts reached as high as 60 to 68 mpg around Casper earlier in the day. A storm system will be moving through the area Wednesday, bringing more gusty wind and some snow. $$ 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, 3:14 AM MST | High Wind Watch | RIW | Fremont, Hot Springs, Natrona, Park, Sublette, Sweetwater | 12 hr |
| Nov 22, 3:23 PM MST | Fire Weather Watch | RIW | Johnson, Natrona | 12 hr |
Nearby
High Wind Warnings in Wyoming, 2021Every high wind warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.