Alert archive / Wyoming / High Wind Warnings in 2021
High Wind Warning 1, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Jan 1, 2021, 12:03 PM MST for Natrona County, Wyoming. It took effect at Jan 2, 2021, 2:00 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
- Jan 1, 2021, 12:03 PM MST (19:03 UTC)
- In effect from
- Jan 2, 2021, 2:00 AM MST
- Expired
- Jan 2, 2021, 12:00 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 19:07 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, 7.1 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
- 1498 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
809 WWUS75 KRIW 011903 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 1203 PM MST Fri Jan 1 2021 WYZ020-021300- /O.NEW.KRIW.HW.W.0001.210102T0900Z-210102T1900Z/ Natrona County Lower Elevations- Including the city of Casper 1203 PM MST Fri Jan 1 2021 ...HIGH WIND WARNING IN EFFECT FROM 2 AM TO NOON MST SATURDAY... * WHAT...Southwest winds 30 to 40 mph with gusts 50 to 60 mph expected. Locally higher gusts. * WHERE...Natrona County Lower Elevations. The strongest wind gusts around 65 mph are expected to occur from Outer Drive on the south side of Casper to the intersection of Interstate 25 and Hat Six Road. * WHEN...From 2 AM to noon MST Saturday. * IMPACTS...Mainly to transportation. An elevated risk for a blow over especially for light and high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...The winds are expected to weaken Saturday afternoon, but a more widespread, high wind event could occur during the day Sunday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. Please keep two hands on your steering wheel in case of a sudden, strong wind gust. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. && $$ WYZ003-021300- /O.NEW.KRIW.HW.A.0001.210103T0000Z-210103T1900Z/ Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 1203 PM MST Fri Jan 1 2021 ...HIGH WIND WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY MORNING... * WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph possible. Higher gusts to around 70 mph near Clark. * WHERE...Cody Foothills, from just south of Cody north to Clark. * WHEN...From Saturday afternoon through Sunday morning. * IMPACTS...Mainly to transportation especially along Highway 120. An elevated risk for a blow over especially for light and high profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ 21
2 follow-up statements
146 WWUS75 KRIW 020943 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 243 AM MST Sat Jan 2 2021 WYZ020-021900- /O.CON.KRIW.HW.W.0001.000000T0000Z-210102T1900Z/ Natrona County Lower Elevations- Including the city of Casper 243 AM MST Sat Jan 2 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...Southwest winds 30 to 40 mph with gusts 50 to 60 mph expected. Locally higher gusts. * WHERE...Natrona County Lower Elevations. The strongest wind gusts around 65 mph are expected to occur from Outer Drive on the south side of Casper to the intersection of Interstate 25 and Hat Six Road. * WHEN...Until Noon Today. * IMPACTS...Mainly to transportation. An elevated risk for a blow over especially for light and high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...The winds are expected to weaken this afternoon, but a more widespread, high wind event could occur during the day Sunday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. Please keep two hands on your steering wheel in case of a sudden, strong wind gust. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. && $$ WYZ003-022000- /O.CON.KRIW.HW.A.0001.210103T0000Z-210103T1900Z/ Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 243 AM MST Sat Jan 2 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY MORNING... * WHAT...West to Southwest winds 35 to 45 mph with gusts up to 60 mph possible. Higher gusts to around 70 mph near Clark. * WHERE...Cody Foothills, from just south of Cody, north to Clark. * WHEN...From 5 PM Today through Sunday morning. * IMPACTS...Mainly to transportation especially along Highway 120. An elevated risk for a blow over especially for light and high profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ For more information from the National Weather Service visit https://weather.gov/riw
589 WWUS75 KRIW 021838 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 1138 AM MST Sat Jan 2 2021 WYZ020-031300- /O.EXP.KRIW.HW.W.0001.000000T0000Z-210102T1900Z/ /O.NEW.KRIW.HW.A.0002.210103T1300Z-210104T0000Z/ Natrona County Lower Elevations- Including the city of Casper 1138 AM MST Sat Jan 2 2021 ...HIGH WIND WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY AFTERNOON... ...HIGH WIND WARNING WILL EXPIRE AT NOON MST TODAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph possible. Locally higher gusts. * WHERE...Natrona County Lower Elevations. The strongest winds are expected to occur along Outer Drive on the south side of Casper. * WHEN...Sunday morning through Sunday afternoon. * IMPACTS...Mainly to transportation. An elevated risk for a blow over especially for light and high profile vehicles, including campers and tractor trailers. 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. && $$ WYZ003-031300- /O.UPG.KRIW.HW.A.0001.210103T0000Z-210103T1900Z/ /O.NEW.KRIW.HW.W.0002.210103T0000Z-210103T1900Z/ Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 1138 AM MST Sat Jan 2 2021 ...HIGH WIND WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO NOON MST SUNDAY... * WHAT...West winds 30 to 40 mph with gusts up to 65 mph expected. * WHERE...Cody Foothills. The strongest wind will occur just south of Cody, and in the Clark area. * WHEN...From 5 PM this afternoon to noon Sunday. * IMPACTS...Mainly to transportation especially along Highway 120. An elevated risk for a blow over especially for light and high profile vehicles, including campers and tractor trailers. * ADDITIONAL DETAILS...Please keep two hands on your steering wheel in case of a sudden, strong wind gust. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. && $$ 21
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 1, 12:03 PM MST | High Wind Watch | RIW | Park | 24 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.