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Home Return to list Severe Thunderstorm Warning 0256 Issued by the Rapid City Forecast Office
Action: New Issued At: 2026-08-11 16:01:22
724
WUUS53 KUNR 112100
SVRUNR
SDC033-103-112200-
/O.NEW.KUNR.SV.W.0256.260811T2100Z-260811T2200Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Rapid City SD
300 PM MDT Tue Aug 11 2026
The National Weather Service in Rapid City has issued a
* Severe Thunderstorm Warning for...
North Central Custer County in southwestern South Dakota...
South Central Pennington County in west central South Dakota...
* Until 400 PM MDT.
* At 300 PM MDT, a severe thunderstorm was located over Bear Country,
or 9 miles southwest of Rapid City, moving southeast at 20 mph.
THIS IS A DESTRUCTIVE STORM FOR ALONG US HIGHWAY 16 FROM
ROCKERVILLE TOWARD REPTILE GARDENS.
HAZARD...Baseball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be severely injured.
Expect shattered windows, extensive damage to roofs,
siding, and vehicles.
* Locations impacted include...
Hermosa, Fairburn, Hayward, Rockerville, Hart Ranch, Black Gap,
Reptile Gardens and Bear Country.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter now inside an interior room on the lowest floor of a
well-built structure. This storm is capable of producing destructive
hail.
&&
LAT...LON 4397 10345 4404 10332 4388 10288 4365 10324
TIME...MOT...LOC 2100Z 309DEG 16KT 4395 10332
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
SE
Action: Continued Issued At: 2026-08-11 16:08:22
898
WWUS53 KUNR 112107
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
307 PM MDT Tue Aug 11 2026
SDC033-103-112200-
/O.CON.KUNR.SV.W.0256.000000T0000Z-260811T2200Z/
Custer SD-Pennington SD-
307 PM MDT Tue Aug 11 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT FOR
NORTH CENTRAL CUSTER AND SOUTH CENTRAL PENNINGTON COUNTIES...
At 307 PM MDT, a severe thunderstorm was located near Bear Country,
or 10 miles south of Rapid City, moving southeast at 20 mph.
THIS IS A DESTRUCTIVE STORM FOR ALONG US HIGHWAY 16 FROM ROCKERVILLE
TOWARD REPTILE GARDENS.
HAZARD...Tennis ball to Softball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be severely injured. Expect
shattered windows, extensive damage to roofs, siding, and
vehicles.
Locations impacted include...
Hermosa, Fairburn, Hayward, Rockerville, Hart Ranch, Black Gap,
Reptile Gardens and Bear Country.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter now inside an interior room on the lowest floor of a
well-built structure. This storm is capable of producing destructive
hail and damaging winds.
&&
LAT...LON 4396 10344 4403 10329 4388 10288 4365 10324
TIME...MOT...LOC 2100Z 309DEG 17KT 4395 10331
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...4.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SE
Action: Continued Issued At: 2026-08-11 16:16:23
261
WWUS53 KUNR 112113
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
313 PM MDT Tue Aug 11 2026
SDC033-103-112200-
/O.CON.KUNR.SV.W.0256.000000T0000Z-260811T2200Z/
Custer SD-Pennington SD-
313 PM MDT Tue Aug 11 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT FOR
NORTH CENTRAL CUSTER AND SOUTH CENTRAL PENNINGTON COUNTIES...
At 313 PM MDT, a severe thunderstorm was located near Hart Ranch, or
12 miles south of Rapid City, moving southeast at 20 mph.
THIS IS A DESTRUCTIVE STORM FOR BETWEEN US HIGHWAY 16 AND SOUTH
DAKOTA HIGHWAY 79, JUST NORTHWEST OF HERMOSA.
HAZARD...Three inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be severely injured. Expect
shattered windows, extensive damage to roofs, siding, and
vehicles.
Locations impacted include...
Hermosa, Fairburn, Hayward and Hart Ranch.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter now inside an interior room on the lowest floor of a
well-built structure. This storm is capable of producing destructive
hail and damaging winds.
&&
LAT...LON 4389 10340 4394 10338 4398 10327 4387 10289
4365 10324
TIME...MOT...LOC 2107Z 315DEG 16KT 4392 10329
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...3.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SE
Action: Continued Issued At: 2026-08-11 16:24:53
435
WWUS53 KUNR 112120
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
320 PM MDT Tue Aug 11 2026
SDC033-103-112200-
/O.CON.KUNR.SV.W.0256.000000T0000Z-260811T2200Z/
Custer SD-Pennington SD-
320 PM MDT Tue Aug 11 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT FOR
NORTH CENTRAL CUSTER AND SOUTH CENTRAL PENNINGTON COUNTIES...
At 320 PM MDT, a severe thunderstorm was located near Hayward, or 15
miles south of Rapid City, moving southeast at 20 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Hermosa, Fairburn and Hayward.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail and damaging winds.
&&
LAT...LON 4386 10338 4390 10334 4395 10326 4385 10293
4365 10324
TIME...MOT...LOC 2113Z 327DEG 16KT 4388 10329
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SE
Action: Continued Issued At: 2026-08-11 16:27:53
505
WWUS53 KUNR 112124
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
324 PM MDT Tue Aug 11 2026
SDC033-103-112200-
/O.CON.KUNR.SV.W.0256.000000T0000Z-260811T2200Z/
Custer SD-Pennington SD-
324 PM MDT Tue Aug 11 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT FOR
NORTH CENTRAL CUSTER AND SOUTH CENTRAL PENNINGTON COUNTIES...
At 324 PM MDT, a severe thunderstorm was located near Hermosa, or 16
miles south of Rapid City, moving southeast at 20 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...
Hermosa, Fairburn and Hayward.
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 4384 10336 4390 10332 4394 10324 4385 10293
4365 10324
TIME...MOT...LOC 2120Z 327DEG 16KT 4385 10327
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SE
Action: Continued Issued At: 2026-08-11 16:36:53
854
WWUS53 KUNR 112136
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
336 PM MDT Tue Aug 11 2026
SDC033-103-112200-
/O.CON.KUNR.SV.W.0256.000000T0000Z-260811T2200Z/
Custer SD-Pennington SD-
336 PM MDT Tue Aug 11 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT FOR
NORTH CENTRAL CUSTER AND SOUTH CENTRAL PENNINGTON COUNTIES...
At 336 PM MDT, a severe thunderstorm was located near Hermosa, or 19
miles east of Custer, moving southeast at 20 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Trained spotters reported.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Hermosa and Fairburn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm has produced dangerous hail
and is capable of producing damaging winds.
&&
LAT...LON 4383 10333 4391 10320 4383 10296 4365 10324
TIME...MOT...LOC 2124Z 327DEG 16KT 4384 10325
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SE
Action: Continued Issued At: 2026-08-11 16:49:53
346
WWUS53 KUNR 112149
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
349 PM MDT Tue Aug 11 2026
SDC103-112159-
/O.CAN.KUNR.SV.W.0256.000000T0000Z-260811T2200Z/
Pennington SD-
349 PM MDT Tue Aug 11 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTH CENTRAL
PENNINGTON COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 800 PM MDT
Tuesday for a portion of west central South Dakota.
&&
LAT...LON 4380 10326 4385 10320 4381 10299 4367 10320
TIME...MOT...LOC 2136Z 327DEG 16KT 4379 10321
$$
SDC033-112200-
/O.CON.KUNR.SV.W.0256.000000T0000Z-260811T2200Z/
Custer SD-
349 PM MDT Tue Aug 11 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT FOR
NORTH CENTRAL CUSTER COUNTY...
At 349 PM MDT, a severe thunderstorm was located 6 miles south of
Hermosa, or 22 miles south of Rapid City, moving southeast at 15 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Hermosa and Fairburn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail and damaging winds.
&&
LAT...LON 4380 10326 4385 10320 4381 10299 4367 10320
TIME...MOT...LOC 2136Z 315DEG 14KT 4380 10321
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SE
Action: Cancelled Issued At: 2026-08-11 16:49:53
346
WWUS53 KUNR 112149
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
349 PM MDT Tue Aug 11 2026
SDC103-112159-
/O.CAN.KUNR.SV.W.0256.000000T0000Z-260811T2200Z/
Pennington SD-
349 PM MDT Tue Aug 11 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTH CENTRAL
PENNINGTON COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 800 PM MDT
Tuesday for a portion of west central South Dakota.
&&
LAT...LON 4380 10326 4385 10320 4381 10299 4367 10320
TIME...MOT...LOC 2136Z 327DEG 16KT 4379 10321
$$
SDC033-112200-
/O.CON.KUNR.SV.W.0256.000000T0000Z-260811T2200Z/
Custer SD-
349 PM MDT Tue Aug 11 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT FOR
NORTH CENTRAL CUSTER COUNTY...
At 349 PM MDT, a severe thunderstorm was located 6 miles south of
Hermosa, or 22 miles south of Rapid City, moving southeast at 15 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Hermosa and Fairburn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail and damaging winds.
&&
LAT...LON 4380 10326 4385 10320 4381 10299 4367 10320
TIME...MOT...LOC 2136Z 315DEG 14KT 4380 10321
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SE
Action: Expired Issued At: 2026-08-11 16:58:24 500 WWUS53 KUNR 112158 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 358 PM MDT Tue Aug 11 2026 SDC033-112208- /O.EXP.KUNR.SV.W.0256.000000T0000Z-260811T2200Z/ Custer SD- 358 PM MDT Tue Aug 11 2026 ...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 4 PM MDT FOR NORTH CENTRAL CUSTER COUNTY... 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 10326 4385 10320 4381 10299 4367 10320 TIME...MOT...LOC 2149Z 315DEG 14KT 4376 10316 $$ SE | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||