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Home Return to list Severe Thunderstorm Warning 0374 Issued by the Rapid City Forecast Office
Action: New Issued At: 2025-09-12 18:09:57
621
WUUS53 KUNR 122309
SVRUNR
SDC033-103-122345-
/O.NEW.KUNR.SV.W.0374.250912T2309Z-250912T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Rapid City SD
509 PM MDT Fri Sep 12 2025
The National Weather Service in Rapid City has issued a
* Severe Thunderstorm Warning for...
Northern Custer County in southwestern South Dakota...
West central Pennington County in west central South Dakota...
* Until 545 PM MDT.
* At 509 PM MDT, a severe thunderstorm was located 6 miles northwest
of Bear Mountain Lookout, or 14 miles west of Hill City, moving
north at 10 mph.
HAZARD...Golf ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect
damage to roofs, siding, windows, and vehicles.
* Locations impacted include...
Bear Mountain Lookout, Medicine Mountain, and Deerfield Reservoir.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4380 10381 4385 10395 4403 10395 4399 10358
TIME...MOT...LOC 2309Z 198DEG 9KT 4392 10386
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
JC
Action: Continued Issued At: 2025-09-12 18:29:28 282 WWUS53 KUNR 122328 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 528 PM MDT Fri Sep 12 2025 SDC033-103-122345- /O.CON.KUNR.SV.W.0374.000000T0000Z-250912T2345Z/ Custer SD-Pennington SD- 528 PM MDT Fri Sep 12 2025 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR NORTHERN CUSTER AND WEST CENTRAL PENNINGTON COUNTIES... At 528 PM MDT, a severe thunderstorm was located 3 miles south of Deerfield, or 13 miles west of Hill City, moving north at 10 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... Bear Mountain Lookout, Medicine Mountain, and Deerfield Reservoir. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4380 10381 4385 10395 4403 10395 4399 10358 TIME...MOT...LOC 2328Z 198DEG 9KT 4397 10384 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ JC Action: Expired Issued At: 2025-09-12 18:37:43 423 WWUS53 KUNR 122337 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 537 PM MDT Fri Sep 12 2025 SDC033-103-122347- /O.EXP.KUNR.SV.W.0374.000000T0000Z-250912T2345Z/ Custer SD-Pennington SD- 537 PM MDT Fri Sep 12 2025 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CUSTER AND WEST CENTRAL PENNINGTON COUNTIES WILL EXPIRE AT 545 PM MDT... 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 will be allowed to expire. However, small hail and heavy rain are still possible with this thunderstorm. && LAT...LON 4380 10381 4385 10395 4403 10395 4399 10358 TIME...MOT...LOC 2337Z 198DEG 9KT 4399 10383 $$ JC | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||