528 

WUUS53 KUNR 110316

SVRUNR

SDC033-081-103-WYC045-110415-

/O.NEW.KUNR.SV.W.0367.250911T0316Z-250911T0415Z/



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Warning

National Weather Service Rapid City SD

916 PM MDT Wed Sep 10 2025



The National Weather Service in Rapid City has issued a



* Severe Thunderstorm Warning for...

  Northwestern Custer County in southwestern South Dakota...

  Southwestern Lawrence County in west central South Dakota...

  West central Pennington County in west central South Dakota...

  East central Weston County in northeastern Wyoming...



* Until 1015 PM MDT.



* At 915 PM MDT, a severe thunderstorm was located 4 miles southeast

  of Newcastle, moving northeast at 35 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.



* Locations impacted include...

  Newcastle, Hill City, Silver City, Hisega, Rochford, Flag Mountain,

  Mystic, Moon, Four Corners, Deerfield, Deerfield Reservoir, Pactola

  Reservoir, O'Neil Pass, Medicine Mountain, Redbank Spring

  Campground, Sheridan Lake, Crooks Tower, Bear Mountain Lookout,

  Mallo Camp, and Black Fox Campground.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



For your protection move to an interior room on the lowest floor of a

building.



&&



LAT...LON 4366 10407 4386 10440 4427 10396 4403 10332

TIME...MOT...LOC 0315Z 229DEG 30KT 4380 10415 



HAIL THREAT...RADAR INDICATED

MAX HAIL SIZE...1.00 IN

WIND THREAT...RADAR INDICATED

MAX WIND GUST...60 MPH



$$



AEH






075 

WWUS55 KBYZ 110320

SVSBYZ



Severe Weather Statement

National Weather Service Billings MT

920 PM MDT Wed Sep 10 2025



MTC011-075-110330-

/O.EXP.KBYZ.SV.W.0260.000000T0000Z-250911T0315Z/

Carter MT-Powder River MT-

920 PM MDT Wed Sep 10 2025



...SEVERE THUNDERSTORM WARNING HAS EXPIRED FOR SOUTHWESTERN CARTER 

AND SOUTHEASTERN POWDER RIVER COUNTIES...



The storms which prompted the warning have weakened below severe 

limits, and no longer pose an immediate threat to life or property. 

Therefore, the warning has been allowed to expire. However, gusty 

winds are still possible with these thunderstorms.



&&



LAT...LON 4517 10534 4533 10552 4561 10511 4540 10482

      4514 10467 4500 10504 4500 10527

TIME...MOT...LOC 0259Z 236DEG 28KT 4540 10525 4529 10506 4513 10501



$$



Stetzer






885 

WWUS53 KUNR 110331

SVSUNR



Severe Weather Statement

National Weather Service Rapid City SD

931 PM MDT Wed Sep 10 2025



SDC033-081-103-WYC045-110340-

/O.CAN.KUNR.SV.W.0367.000000T0000Z-250911T0415Z/

Custer SD-Lawrence SD-Pennington SD-Weston WY-

931 PM MDT Wed Sep 10 2025



...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CUSTER...

SOUTHWESTERN LAWRENCE...WEST CENTRAL PENNINGTON AND EAST CENTRAL

WESTON COUNTIES IS CANCELLED...



The severe thunderstorm which prompted the warning has weakened. 

Therefore, the warning has been cancelled.  However, small hail and 

gusty winds are still possible with this thunderstorm.



&&



LAT...LON 4366 10407 4386 10440 4427 10396 4403 10332

TIME...MOT...LOC 0328Z 229DEG 30KT 4389 10401 



$$



AEH