Alert archive / Wyoming / High Wind Watches in 2021
High Wind Watch 2, NWS Riverton, WY
NWS Riverton, WY issued this high wind watch at Jan 2, 2021, 11:38 AM MST for Natrona County, Wyoming. It took effect at Jan 3, 2021, 6:00 AM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 2, 2021, 11:38 AM MST (18:38 UTC)
- In effect from
- Jan 3, 2021, 6:00 AM MST
- Expired
- Jan 3, 2021, 3:49 AM MST
- In force
- 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 18:40 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, 6.6 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
- 2611 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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
2 follow-up statements
540 WWUS75 KRIW 021957 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 1257 PM MST Sat Jan 2 2021 WYZ003-031300- /O.CON.KRIW.HW.W.0002.210103T0000Z-210103T1900Z/ Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 1257 PM MST Sat Jan 2 2021 ...HIGH WIND WARNING REMAINS 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. && $$ WYZ020-031300- /O.CON.KRIW.HW.A.0002.210103T1300Z-210104T0000Z/ Natrona County Lower Elevations- Including the city of Casper 1257 PM MST Sat Jan 2 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY AFTERNOON... * WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph possible. Locally higher gusts. * WHERE...Natrona County Lower Elevations. The strongest winds are expected to occur along Outer Drive on the south side of Casper. * WHEN...Sunday morning through Sunday afternoon. * IMPACTS...Mainly to transportation. An elevated risk for a blow over especially for light and high profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. && $$ 21
107 WWUS75 KRIW 031049 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 349 AM MST Sun Jan 3 2021 WYZ020-040000- /O.UPG.KRIW.HW.A.0002.210103T1300Z-210104T0000Z/ /O.EXB.KRIW.HW.W.0002.210103T1300Z-210104T0000Z/ Natrona County Lower Elevations- Including the city of Casper 349 AM MST Sun Jan 3 2021 ...HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Southwest wind 30 to 40 mph with gusts 55 to 60 mph expected. * WHERE...Natrona County Lower Elevations. The strongest winds are expected to occur along Outer Drive on the south side of Casper where wind gusts over 60 mph are likely. * WHEN...Until 5 PM MST. * 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... People should secure any loose objects, or bring them inside, to prevent them from becoming flying objects. Use caution while driving and be alert for sudden high wind gusts. && $$ WYZ003-031900- /O.CON.KRIW.HW.W.0002.000000T0000Z-210103T1900Z/ Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 349 AM MST Sun Jan 3 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MST TODAY... * WHAT...West winds 30 to 40 mph with gusts up to 65 mph expected. * WHERE...Cody Foothills. The strongest wind will occur just south of Cody, and in the Clark area. * WHEN...Until Noon. * IMPACTS...Mainly to transportation especially along Highway 120. An elevated risk for a blow over especially for light and high profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. Please keep two hands on your steering wheel in case of a sudden, strong wind gust. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. && $$ 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 |
|---|---|---|---|---|
| Jan 2, 11:38 AM MST | High Wind Warning | RIW | Natrona, Park | 29 hr |
Nearby
High Wind Watches in Wyoming, 2021Every high wind watch 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.