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Home Return to list Severe Thunderstorm Warning 0373 Issued by the Rapid City Forecast Office
Action: New Issued At: 2025-09-12 17:39:56
852
WUUS53 KUNR 122239
SVRUNR
WYC045-122345-
/O.NEW.KUNR.SV.W.0373.250912T2239Z-250912T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Rapid City SD
439 PM MDT Fri Sep 12 2025
The National Weather Service in Rapid City has issued a
* Severe Thunderstorm Warning for...
Northeastern Weston County in northeastern Wyoming...
* Until 545 PM MDT.
* At 439 PM MDT, a severe thunderstorm was located 4 miles northwest
of Osage, or 18 miles northwest of Newcastle, moving east at 20
mph.
HAZARD...Golf 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.
* This severe thunderstorm will remain over mainly rural areas of
northeastern Weston County, north of Osage.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4406 10456 4419 10426 4402 10412 4397 10451
TIME...MOT...LOC 2239Z 247DEG 16KT 4402 10449
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JC
Action: Continued Issued At: 2025-09-12 17:55:27
228
WWUS53 KUNR 122255
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
455 PM MDT Fri Sep 12 2025
WYC045-122345-
/O.CON.KUNR.SV.W.0373.000000T0000Z-250912T2345Z/
Weston WY-
455 PM MDT Fri Sep 12 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR NORTHEASTERN WESTON COUNTY...
At 455 PM MDT, a severe thunderstorm was located 6 miles north of
Osage, or 18 miles northwest of Newcastle, moving northeast at 15
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe thunderstorm will remain over mainly rural areas of
northeastern Weston County, north of Osage.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4419 10426 4402 10412 4399 10446 4408 10451
TIME...MOT...LOC 2255Z 241DEG 15KT 4407 10444
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JC
Action: Continued Issued At: 2025-09-12 18:10:57
715
WWUS53 KUNR 122310
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
510 PM MDT Fri Sep 12 2025
WYC045-122345-
/O.CON.KUNR.SV.W.0373.000000T0000Z-250912T2345Z/
Weston WY-
510 PM MDT Fri Sep 12 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR NORTHEASTERN WESTON COUNTY...
At 510 PM MDT, a severe thunderstorm was located 8 miles north of
Osage, or 19 miles northwest of Newcastle, moving northeast at 15
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe thunderstorm will remain over mainly rural areas of
northeastern Weston County, north of Osage.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4419 10426 4402 10412 4402 10443 4410 10446
TIME...MOT...LOC 2310Z 244DEG 15KT 4409 10439
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JC
Action: Cancelled Issued At: 2025-09-12 18:22:57 055 WWUS53 KUNR 122322 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 522 PM MDT Fri Sep 12 2025 WYC045-122332- /O.CAN.KUNR.SV.W.0373.000000T0000Z-250912T2345Z/ Weston WY- 522 PM MDT Fri Sep 12 2025 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WESTON COUNTY IS CANCELLED... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been cancelled. However, small hail and gusty winds are still possible with this thunderstorm. && LAT...LON 4419 10426 4402 10412 4402 10443 4410 10446 TIME...MOT...LOC 2320Z 247DEG 16KT 4411 10432 $$ JC | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||