Alert archive / Wyoming / High Wind Warnings in 2021
High Wind Warning 6, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Feb 6, 2021, 2:40 PM MST for Lincoln County, Sweetwater County, Wyoming. It took effect at Feb 6, 2021, 5:00 PM MST. It was in force for 24 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
- Feb 6, 2021, 2:40 PM MST (21:40 UTC)
- In effect from
- Feb 6, 2021, 5:00 PM MST
- Expired
- Feb 7, 2021, 5:00 PM MST
- In force
- 24 hr
- Issued by
- NWS Riverton, WY
Counties Lincoln County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 162 km from the middle of the area, began a volume at 21:39 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 |
|---|---|---|---|
| Feb 7, 12:14 PM MST | NON-TSTM WND GST 59 | 8 Se Reliance, WY | ASOS STATION KRKS ROCK SPRINGS 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, 9.7 hours before the alert went out and 167 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
- 938 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- 237 m²/s²
- 0-3 km storm-relative helicity
- 467 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
791 WWUS75 KRIW 062140 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 240 PM MST Sat Feb 6 2021 WYZ027>030-071300- /O.UPG.KRIW.HW.A.0004.210207T0000Z-210208T0000Z/ /O.NEW.KRIW.HW.W.0006.210207T0000Z-210208T0000Z/ South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 240 PM MST Sat Feb 6 2021 ...HIGH WIND WARNING IN EFFECT 5 PM MST TODAY THROUGH 5 PM MST SUNDAY... * WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...South Lincoln County, Rock Springs and Green River, Flaming Gorge and East Sweetwater County. * WHEN...From this evening to 5 PM MST Sunday. * IMPACTS...Mainly to transportation. Travel will be difficult, especially for high profile vehicles, including along Interstate 80. 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. && $$ For more information from the National Weather Service visit https://weather.gov/riw
3 follow-up statements
129 WWUS75 KRIW 071001 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 301 AM MST Sun Feb 7 2021 WYZ027>030-080000- /O.CON.KRIW.HW.W.0006.000000T0000Z-210208T0000Z/ South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 301 AM MST Sun Feb 7 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...South Lincoln County, Rock Springs and Green River, Flaming Gorge and East Sweetwater County. * WHEN...From this evening to 5 PM MST Sunday. * IMPACTS...Mainly to transportation. Travel will be difficult, especially for high profile vehicles, including along Interstate 80. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ For more information from the National Weather Service visit https://weather.gov/riw
568 WWUS75 KRIW 072107 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 207 PM MST Sun Feb 7 2021 WYZ027>030-080000- /O.CON.KRIW.HW.W.0006.000000T0000Z-210208T0000Z/ South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 207 PM MST Sun Feb 7 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...South Lincoln County, Rock Springs and Green River, Flaming Gorge and East Sweetwater County. The strongest gusts are expected east and south of Rock Springs. * WHEN...Through 5 PM MST Sunday. * IMPACTS...Mainly to transportation. Travel will be difficult, especially for high profile vehicles, including along Interstate 80. * ADDITIONAL DETAILS...Wind gusts along US 30 from Granger through Kemmerer will range from 35 to 45 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you are traveling I-80, especially between Rock Springs and the Carbon County line, be prepared for sudden crosswinds. && $$ For more information from the National Weather Service visit https://weather.gov/riw
408 WWUS75 KRIW 072344 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 444 PM MST Sun Feb 7 2021 WYZ027>030-080045- /O.EXP.KRIW.HW.W.0006.000000T0000Z-210208T0000Z/ South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 444 PM MST Sun Feb 7 2021 ...HIGH WIND WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON... The strong winds have weakened below high wind warning criteria, and thus the high wind warning will be allowed to expire at 5 PM. $$ 21
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 6, 2:29 AM MST | Winter Weather Advisory | RIW | Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 4 more | 39 hr |
| Feb 6, 2:30 AM MST | High Wind Watch | RIW | Lincoln, Sweetwater | 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.