Alert archive / Wyoming / High Wind Warnings in 2021
High Wind Warning 14, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Jun 9, 2021, 2:29 PM MDT for 7 counties in Wyoming. It took effect at Jun 10, 2021, 10:00 AM MDT. It was in force for 13 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 9, 2021, 2:29 PM MDT (20:29 UTC)
- In effect from
- Jun 10, 2021, 10:00 AM MDT
- Expired
- Jun 10, 2021, 11:00 PM MDT
- In force
- 13 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Johnson County, WY, Lincoln County, WY, Natrona County, WY, Park County, WY, Sublette County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 20 km from the middle of the area, began a volume at 20:33 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, 8.5 hours before the alert went out and 26 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
- 3029 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
923 WWUS75 KRIW 092029 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 229 PM MDT Wed Jun 9 2021 WYZ019-026>030-101000- /O.UPG.KRIW.HW.A.0010.210610T1800Z-210611T0300Z/ /O.NEW.KRIW.HW.W.0014.210610T1600Z-210611T0300Z/ Green Mountains and Rattlesnake Range-Upper Green River Basin- South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Jeffrey City, La Barge, Big Piney, Farson, Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 229 PM MDT Wed Jun 9 2021 ...HIGH WIND WARNING IN EFFECT FROM 10 AM TO 9 PM MDT THURSDAY... * WHAT...Southwest winds 35 to 40 mph with gusts up to 65 mph expected. * WHERE...Green Mountains and Rattlesnake Range, Upper Green River Basin, South Lincoln County, Rock Springs and Green River, Flaming Gorge and East Sweetwater County. * WHEN...From 10 AM to 9 PM MDT Thursday. * IMPACTS...Damaging winds may blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The dry air mass will lead to low afternoon RH values in the single digits, leading to critical fire weather conditions. Any fire could spread extremely rapidly. 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. && $$ WYZ003-010-011-017-020-101000- /O.UPG.KRIW.HW.A.0010.210610T2100Z-210611T0500Z/ /O.NEW.KRIW.HW.W.0014.210610T2100Z-210611T0500Z/ Cody Foothills-Northeast Johnson County-Southeast Johnson County- Wind River Basin-Natrona County Lower Elevations- Including the cities of Clark, Cody, Meeteetse, Buffalo, Kaycee, Riverton, Shoshoni, and Casper 229 PM MDT Wed Jun 9 2021 ...HIGH WIND WARNING IN EFFECT FROM 3 PM TO 11 PM MDT THURSDAY... * WHAT...Southwest winds 35 to 40 mph with gusts up to 65 mph expected. * WHERE...Cody Foothills, Northeast Johnson County, Southeast Johnson County, Wind River Basin and Natrona County Lower Elevations. * WHEN...From 3 PM to 11 PM MDT Thursday. * IMPACTS...Damaging winds may blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The dry air mass will lead to low afternoon RH values in the single digits, leading to critical fire weather conditions. Any fire could spread extremely rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ For more information from the National Weather Service visit https://weather.gov/riw
5 follow-up statements
882 WWUS75 KRIW 100831 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 231 AM MDT Thu Jun 10 2021 WYZ019-026>030-110000- /O.CON.KRIW.HW.W.0014.210610T1600Z-210611T0300Z/ Green Mountains and Rattlesnake Range-Upper Green River Basin- South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Jeffrey City, La Barge, Big Piney, Farson, Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 231 AM MDT Thu Jun 10 2021 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 9 PM MDT THIS EVENING... * WHAT...Southwest winds becoming westerly at 35 to 40 mph with gusts 60 to 65 mph expected. * WHERE...Southwest and south central WY, including along the HWY 30/I-80 Corridor from Kemmerer to Wamsutter and the Green River Basin. * WHEN...From 10 AM to 9 PM Thursday. * IMPACTS...Damaging winds may blow down trees and branches. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The dry air mass will lead to low afternoon RH values in the single digits, leading to critical fire weather conditions. Any fire could spread extremely rapidly. 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. Do not attempt to burn today. && $$ WYZ003-010-011-017-020-110000- /O.CON.KRIW.HW.W.0014.210610T2100Z-210611T0500Z/ Cody Foothills-Northeast Johnson County-Southeast Johnson County- Wind River Basin-Natrona County Lower Elevations- Including the cities of Clark, Cody, Meeteetse, Buffalo, Kaycee, Riverton, Shoshoni, and Casper 231 AM MDT Thu Jun 10 2021 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 PM MDT THIS EVENING... * WHAT...Southwest winds becoming westerly at 35 to 40 mph with gusts 60 to 65 mph expected. * WHERE...Cody Foothills and parts of central WY, including along the I-25 Corridor from Casper to Buffalo and the Wind River Basin. * WHEN...From 3 PM to 11 PM Thursday. * IMPACTS...Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The dry air mass will lead to low afternoon RH values in the single digits, leading to critical fire weather conditions. Any fire could spread extremely rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. Do not attempt to burn today. && $$ For more information from the National Weather Service visit https://weather.gov/riw
442 WWUS75 KRIW 101613 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 1013 AM MDT Thu Jun 10 2021 WYZ019-026>030-110300- /O.CON.KRIW.HW.W.0014.000000T0000Z-210611T0300Z/ Green Mountains and Rattlesnake Range-Upper Green River Basin- South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Jeffrey City, La Barge, Big Piney, Farson, Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 1013 AM MDT Thu Jun 10 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Southwest winds becoming westerly at 35 to 40 mph with gusts 60 to 65 mph expected. * WHERE...Southwest and south central WY, including along the HWY 30/I-80 Corridor, from Kemmerer to Wamsutter and the Green River Basin. * WHEN...Until 9 PM Thursday. * IMPACTS...Damaging winds may blow down trees and branches. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The dry air mass will lead to low RH values in the single digits, leading to critical fire weather conditions. Any fire could spread extremely fast! 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. Do not attempt to burn today. && $$ WYZ003-010-011-017-020-110300- /O.CON.KRIW.HW.W.0014.210610T2100Z-210611T0500Z/ Cody Foothills-Northeast Johnson County-Southeast Johnson County- Wind River Basin-Natrona County Lower Elevations- Including the cities of Clark, Cody, Meeteetse, Buffalo, Kaycee, Riverton, Shoshoni, and Casper 1013 AM MDT Thu Jun 10 2021 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 PM MDT THIS EVENING... * WHAT...Southwest winds becoming westerly at 35 to 40 mph with gusts 60 to 65 mph expected. * WHERE...Cody Foothills and parts of central WY, including along the I-25 Corridor from Casper to Buffalo and the Wind River Basin. * WHEN...From 3 PM to 11 PM Thursday. * IMPACTS...Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The dry air mass will lead to low afternoon RH values in the single digits, leading to critical fire weather conditions. Any fire could spread extremely fast! PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. Do not attempt to burn today. && $$ For more information from the National Weather Service visit https://weather.gov/riw
653 WWUS75 KRIW 102104 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 304 PM MDT Thu Jun 10 2021 WYZ019-026>030-110300- /O.CON.KRIW.HW.W.0014.000000T0000Z-210611T0300Z/ Green Mountains and Rattlesnake Range-Upper Green River Basin- South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Jeffrey City, La Barge, Big Piney, Farson, Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 304 PM MDT Thu Jun 10 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... * WHAT...Southwest winds becoming westerly at 35 to 40 mph with gusts 60 to 65 mph expected. * WHERE...Southwest and south central WY, including along the HWY 30/I-80 Corridor, from Kemmerer to Wamsutter and the Green River Basin. * WHEN...Until 9 PM Thursday. * IMPACTS...Damaging winds may blow down trees and branches. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The dry air mass will lead to low RH values in the single digits, leading to critical fire weather conditions. Any fire could spread extremely fast!. 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. Do not attempt to burn today. && $$ WYZ003-010-011-017-020-110500- /O.CON.KRIW.HW.W.0014.000000T0000Z-210611T0500Z/ Cody Foothills-Northeast Johnson County-Southeast Johnson County- Wind River Basin-Natrona County Lower Elevations- Including the cities of Clark, Cody, Meeteetse, Buffalo, Kaycee, Riverton, Shoshoni, and Casper 304 PM MDT Thu Jun 10 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 PM MDT THIS EVENING... * WHAT...Southwest winds becoming westerly at 35 to 40 mph with gusts 60 to 65 mph expected. * WHERE...Cody Foothills and parts of central WY, including along the I-25 Corridor from Casper to Buffalo and the Wind River Basin. * WHEN...Until 11 PM Thursday. * IMPACTS...Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The dry air mass will lead to low afternoon RH values in the single digits, leading to critical fire weather conditions. Any fire could spread extremely fast!. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. Do not attempt to burn today. && $$ For more information from the National Weather Service visit https://weather.gov/riw
190 WWUS75 KRIW 110257 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 857 PM MDT Thu Jun 10 2021 WYZ019-026>030-110400- /O.EXP.KRIW.HW.W.0014.000000T0000Z-210611T0300Z/ Green Mountains and Rattlesnake Range-Upper Green River Basin- South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Jeffrey City, La Barge, Big Piney, Farson, Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 857 PM MDT Thu Jun 10 2021 ...HIGH WIND WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... Wind gusts have generally decreased below 45 mph across southwest Wyoming this evening. Therefore, the High Wind Warning will be allowed to expire at 9 PM. A few ridgetop locations may still see gusts around 50 mph until 11 PM. Peak speeds earlier today reached 45 to 55 mph at many locations. $$ WYZ003-010-011-017-020-110500- /O.CON.KRIW.HW.W.0014.000000T0000Z-210611T0500Z/ Cody Foothills-Northeast Johnson County-Southeast Johnson County- Wind River Basin-Natrona County Lower Elevations- Including the cities of Clark, Cody, Meeteetse, Buffalo, Kaycee, Riverton, Shoshoni, and Casper 857 PM MDT Thu Jun 10 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 PM MDT THIS EVENING... * WHAT...West to northwest wind 25 to 35 mph with occasional gusts of 50 to 60 mph. * WHERE...Cody Foothills and parts of central Wyoming, including the I-25 Corridor from Casper to Buffalo and the Wind River Basin. * WHEN...Until 11 PM Thursday. * IMPACTS...Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Isolated showers and thunderstorms may create outflow wind gusts of 60 to 65 mph along the east slopes and foothills of the Absaroka Range. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ For more information from the National Weather Service visit https://weather.gov/riw
216 WWUS75 KRIW 110454 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 1054 PM MDT Thu Jun 10 2021 WYZ003-010-011-017-020-110600- /O.EXP.KRIW.HW.W.0014.000000T0000Z-210611T0500Z/ Cody Foothills-Northeast Johnson County-Southeast Johnson County- Wind River Basin-Natrona County Lower Elevations- Including the cities of Clark, Cody, Meeteetse, Buffalo, Kaycee, Riverton, Shoshoni, and Casper 1054 PM MDT Thu Jun 10 2021 ...HIGH WIND WARNING WILL EXPIRE AT 11 PM MDT THIS EVENING... Wind gusts have generally decreased below 50 mph across the area. Accordingly, the High Wind Warning will expire at 9 PM. Occasional gusts up to 45 mph are still possible for the next couple of hours but will continue decreasing overnight. $$ 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 |
|---|---|---|---|---|
| Jun 9, 2:29 AM MDT | High Wind Watch | RIW | Fremont, Johnson, Lincoln, Natrona, Park, Sublette and 1 more | 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.