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Home Return to list Severe Thunderstorm Warning 0246 Issued by the Rapid City Forecast Office
Action: New Issued At: 2026-08-10 17:49:45
567
WUUS53 KUNR 102249
SVRUNR
SDC033-103-102345-
/O.NEW.KUNR.SV.W.0246.260810T2249Z-260810T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Rapid City SD
449 PM MDT Mon Aug 10 2026
The National Weather Service in Rapid City has issued a
* Severe Thunderstorm Warning for...
North Central Custer County in southwestern South Dakota...
Southwestern Pennington County in west central South Dakota...
* Until 545 PM MDT.
* At 449 PM MDT, a severe thunderstorm was located over Silver City,
or 10 miles north of Hill City, moving east at 35 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.
* This severe thunderstorm will be near...
Silver City and Mystic around 450 PM MDT.
Pactola Reservoir around 455 PM MDT.
This includes Interstate 90 in South Dakota between Mile Markers 55
and 74.
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.
&&
LAT...LON 4403 10375 4412 10366 4414 10290 4370 10310
TIME...MOT...LOC 2248Z 289DEG 30KT 4408 10361
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JC
Action: Continued Issued At: 2026-08-10 17:58:00
707
WWUS53 KUNR 102257
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
457 PM MDT Mon Aug 10 2026
SDC033-103-102345-
/O.CON.KUNR.SV.W.0246.000000T0000Z-260810T2345Z/
Custer SD-Pennington SD-
457 PM MDT Mon Aug 10 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR
NORTH CENTRAL CUSTER AND SOUTHWESTERN PENNINGTON COUNTIES...
At 457 PM MDT, a severe thunderstorm was located over Silver City, or
8 miles north of Hill City, moving east at 35 mph.
HAZARD...Tennis ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
This severe thunderstorm will be near...
Pactola Reservoir, Silver City and Mystic around 500 PM MDT.
Johnson Siding around 505 PM MDT.
Hisega, Sheridan Lake and Keystone Wye around 510 PM MDT.
Bear Country, Rapid City and Rockerville around 520 PM MDT.
Reptile Gardens and Hayward around 525 PM MDT.
Hart Ranch and Rapid Valley around 530 PM MDT.
Black Gap and Hermosa around 535 PM MDT.
Rapid City Airport and Caputa around 540 PM MDT.
This includes Interstate 90 in South Dakota between Mile Markers 55
and 74.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail.
&&
LAT...LON 4403 10375 4412 10366 4414 10290 4370 10310
TIME...MOT...LOC 2249Z 290DEG 28KT 4407 10364
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
JC
Action: Continued Issued At: 2026-08-10 18:05:00
979
WWUS53 KUNR 102304
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
504 PM MDT Mon Aug 10 2026
SDC033-103-102345-
/O.CON.KUNR.SV.W.0246.000000T0000Z-260810T2345Z/
Custer SD-Pennington SD-
504 PM MDT Mon Aug 10 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR
NORTH CENTRAL CUSTER AND SOUTHWESTERN PENNINGTON COUNTIES...
At 504 PM MDT, a severe thunderstorm was located near Pactola
Reservoir, or 7 miles northeast of Hill City, moving east at 35 mph.
HAZARD...Tennis ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
This severe thunderstorm will be near...
Pactola Reservoir and Johnson Siding around 505 PM MDT.
Sheridan Lake and Hisega around 510 PM MDT.
Keystone Wye, Keystone and Mount Rushmore National Memorial around
515 PM MDT.
Rockerville and Rapid City around 520 PM MDT.
Bear Country, Reptile Gardens and Hayward around 525 PM MDT.
Hart Ranch around 530 PM MDT.
Black Gap around 535 PM MDT.
Hermosa around 540 PM MDT.
This includes Interstate 90 in South Dakota between Mile Markers 60
and 62.
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.
&&
LAT...LON 4399 10366 4409 10356 4411 10291 4370 10310
TIME...MOT...LOC 2257Z 291DEG 28KT 4404 10357
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
JC
Action: Continued Issued At: 2026-08-10 18:14:30
416
WWUS53 KUNR 102314
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
514 PM MDT Mon Aug 10 2026
SDC033-103-102345-
/O.CON.KUNR.SV.W.0246.000000T0000Z-260810T2345Z/
Custer SD-Pennington SD-
514 PM MDT Mon Aug 10 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR
NORTH CENTRAL CUSTER AND SOUTHWESTERN PENNINGTON COUNTIES...
At 514 PM MDT, a severe thunderstorm was located over Sheridan Lake,
or 9 miles northeast of Hill City, moving east at 30 mph.
HAZARD...Golf ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
This severe thunderstorm will be near...
Sheridan Lake, Hisega, Keystone Wye, Pactola Reservoir and Johnson
Siding around 515 PM MDT.
Rockerville, Keystone and Mount Rushmore National Memorial around
520 PM MDT.
This includes Interstate 90 in South Dakota between Mile Markers 61
and 62.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail.
This storm is producing large quantities of hail. Driving through
deep hail is like driving on slushy roads. Slow down and do not brake
suddenly.
&&
LAT...LON 4397 10361 4409 10346 4411 10291 4370 10310
TIME...MOT...LOC 2304Z 291DEG 27KT 4403 10352
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
JC
Action: Continued Issued At: 2026-08-10 18:20:31 525 WWUS53 KUNR 102320 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 520 PM MDT Mon Aug 10 2026 SDC033-103-102345- /O.CON.KUNR.SV.W.0246.000000T0000Z-260810T2345Z/ Custer SD-Pennington SD- 520 PM MDT Mon Aug 10 2026 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR NORTH CENTRAL CUSTER AND SOUTH CENTRAL PENNINGTON COUNTIES... At 520 PM MDT, a severe thunderstorm was located over Rockerville, or 9 miles southwest of Rapid City, moving east at 30 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe thunderstorm will be near... Rockerville, Sheridan Lake, Hisega, Keystone Wye, Keystone and Mount Rushmore National Memorial around 520 PM MDT. Bear Country and Rapid City around 525 PM MDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm is producing large quantities of hail. Driving through deep hail is like driving on slushy roads. Slow down and do not brake suddenly. && LAT...LON 4394 10356 4406 10343 4408 10292 4370 10310 TIME...MOT...LOC 2314Z 291DEG 27KT 4400 10342 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ JC Action: Cancelled Issued At: 2026-08-10 18:29:01 852 WWUS53 KUNR 102328 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 528 PM MDT Mon Aug 10 2026 SDC033-103-102338- /O.CAN.KUNR.SV.W.0246.000000T0000Z-260810T2345Z/ Custer SD-Pennington SD- 528 PM MDT Mon Aug 10 2026 ...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR NORTH CENTRAL CUSTER AND SOUTH CENTRAL PENNINGTON COUNTIES... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been cancelled. However, small hail and gusty winds are still possible with this thunderstorm. && LAT...LON 4394 10356 4406 10343 4408 10292 4370 10310 TIME...MOT...LOC 2320Z 291DEG 27KT 4398 10336 $$ JC | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||