Alert archive / Wyoming / High Wind Warnings in 2021
High Wind Warning 8, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Feb 25, 2021, 2:29 AM MST for Natrona County, Wyoming. It took effect at Feb 25, 2021, 11:00 AM MST. It was in force for 10 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
- Feb 25, 2021, 2:29 AM MST (09:29 UTC)
- In effect from
- Feb 25, 2021, 11:00 AM MST
- Expired
- Feb 25, 2021, 9:22 PM MST
- In force
- 10 hr
- Issued by
- NWS Riverton, WY
County Natrona County, WY
The radar
The Riverton/Lander radar (KRIW), 137 km from the middle of the area, began a volume at 09:29 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, 9.5 hours before the alert went out and 131 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
- 1869 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
165 WWUS75 KRIW 250929 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 229 AM MST Thu Feb 25 2021 WYZ020-251830- /O.NEW.KRIW.HW.W.0008.210225T1800Z-210226T0600Z/ Natrona County Lower Elevations- Including the city of Casper 229 AM MST Thu Feb 25 2021 ...HIGH WIND WARNING IN EFFECT FROM 11 AM THIS MORNING TO 11 PM MST THIS EVENING... * WHAT...Southwest winds 30 to 40 mph, with gusts up to 60 mph, expected in the Casper area, especially toward Evansville. Localized higher gusts of 70 mph is expected along Outer Drive/Wyoming Boulevard on the south side of Casper. * WHERE...Natrona County Lower Elevations. * WHEN...From 11 AM this morning to 11 PM MST this evening. * IMPACTS...Mainly to transportation. Extreme blow over risk for light and high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Please keep two hands on your steering wheel in case of a sudden, strong wind gust. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle.&& $$ For more information from the National Weather Service visit https://weather.gov/riw
2 follow-up statements
899 WWUS75 KRIW 251827 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 1127 AM MST Thu Feb 25 2021 WYZ020-260600- /O.CON.KRIW.HW.W.0008.000000T0000Z-210226T0600Z/ Natrona County Lower Elevations- Including the city of Casper 1127 AM MST Thu Feb 25 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Southwest winds 30 to 40 mph, with gusts up to 60 mph, expected in the Casper area, especially toward Evansville. Localized higher gusts of 70 mph is expected along Outer Drive/Wyoming Boulevard on the south side of Casper. * WHERE...Natrona County Lower Elevations. * WHEN...Now through 11 PM MST this evening. * IMPACTS...Mainly to transportation. Extreme blow over risk for light and high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Please keep two hands on your steering wheel in case of a sudden, strong wind gust. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. && $$ For more information from the National Weather Service visit https://weather.gov/riw
034 WWUS75 KRIW 260422 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 922 PM MST Thu Feb 25 2021 WYZ020-260530- /O.CAN.KRIW.HW.W.0008.000000T0000Z-210226T0600Z/ Natrona County Lower Elevations- Including the city of Casper 922 PM MST Thu Feb 25 2021 ...HIGH WIND WARNING IS CANCELLED... Wind gusts have dropped below warning criteria. This has prompted the cancellation of the High Wind Warning. Winds will remain gusty but will continue to diminish through the rest of the night. $$ 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 |
|---|---|---|---|---|
| Feb 25, 2:52 AM MST | Winter Storm Warning | RIW | Fremont, Lincoln, Sublette, Teton | 51 hr |
| Feb 25, 2:52 AM MST | Winter Weather Advisory | RIW | Park, Sublette, Teton | 51 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.