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Home Return to list Severe Thunderstorm Warning 0280 Issued by the Rapid City Forecast Office
Action: New Issued At: 2026-08-12 14:44:52
771
WUUS53 KUNR 121944
SVRUNR
WYC045-122030-
/O.NEW.KUNR.SV.W.0280.260812T1944Z-260812T2030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Rapid City SD
144 PM MDT Wed Aug 12 2026
The National Weather Service in Rapid City has issued a
* Severe Thunderstorm Warning for...
Southern Weston County in northeastern Wyoming...
* Until 230 PM MDT.
* At 144 PM MDT, a severe thunderstorm was located over Clareton, or
26 miles southwest of Newcastle, moving east at 40 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Newcastle, Clareton, Morrisey and Rochelle.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
&&
LAT...LON 4361 10506 4395 10493 4397 10406 4350 10409
4350 10480
TIME...MOT...LOC 1944Z 288DEG 33KT 4370 10470
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Schultz
Action: Continued Issued At: 2026-08-12 14:56:52
997
WWUS53 KUNR 121956
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
156 PM MDT Wed Aug 12 2026
WYC045-122030-
/O.CON.KUNR.SV.W.0280.000000T0000Z-260812T2030Z/
Weston WY-
156 PM MDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR
SOUTHERN WESTON COUNTY...
At 156 PM MDT, a severe thunderstorm was located 7 miles east of
Clareton, or 21 miles southwest of Newcastle, moving east at 40 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Newcastle, Morrisey and Clareton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
&&
LAT...LON 4356 10495 4391 10483 4397 10406 4350 10409
4350 10480
TIME...MOT...LOC 1944Z 288DEG 33KT 4370 10469
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Schultz
Action: Continued Issued At: 2026-08-12 15:05:52
346
WWUS53 KUNR 122005
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
205 PM MDT Wed Aug 12 2026
WYC045-122030-
/O.CON.KUNR.SV.W.0280.000000T0000Z-260812T2030Z/
Weston WY-
205 PM MDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR
SOUTHEASTERN WESTON COUNTY...
At 205 PM MDT, a severe thunderstorm was located 8 miles north of
Morrisey, or 19 miles southwest of Newcastle, moving east at 40 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Newcastle, Morrisey and Clareton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
&&
LAT...LON 4358 10480 4386 10473 4397 10406 4350 10409
4350 10421 4351 10451
TIME...MOT...LOC 1956Z 288DEG 33KT 4366 10454
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Schultz
Action: Continued Issued At: 2026-08-12 15:18:23
831
WWUS53 KUNR 122017
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
217 PM MDT Wed Aug 12 2026
WYC045-122030-
/O.CON.KUNR.SV.W.0280.000000T0000Z-260812T2030Z/
Weston WY-
217 PM MDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR
SOUTHEASTERN WESTON COUNTY...
At 217 PM MDT, a severe thunderstorm was located 7 miles northeast of
Morrisey, or 18 miles south of Newcastle, moving east at 40 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Newcastle.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail and damaging winds.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
&&
LAT...LON 4360 10455 4382 10456 4397 10406 4355 10409
TIME...MOT...LOC 2005Z 288DEG 33KT 4364 10444
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Schultz
Action: Expired Issued At: 2026-08-12 15:27:23 965 WWUS53 KUNR 122027 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 227 PM MDT Wed Aug 12 2026 WYC045-122037- /O.EXP.KUNR.SV.W.0280.000000T0000Z-260812T2030Z/ Weston WY- 227 PM MDT Wed Aug 12 2026 ...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 230 PM MDT FOR SOUTHEASTERN WESTON COUNTY... The Severe Thunderstorm Warning that was previously in effect has been reissued for Weston County and is in effect until 315 PM MDT. Please refer to that bulletin for the latest severe weather information. A Severe Thunderstorm Watch remains in effect until 800 PM MDT Wednesday for a portion of northeast Wyoming. && LAT...LON 4360 10455 4382 10456 4397 10406 4355 10409 TIME...MOT...LOC 2017Z 288DEG 33KT 4360 10429 $$ Schultz | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||