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Severe Thunderstorm Warning 0247
Issued by the Rapid City Forecast Office

Action Issued Starts Expiration
New 2026-08-10 19:28:02 2026-08-10 19:27:00 2026-08-10 20:30:00
Continued 2026-08-10 19:48:03 2026-08-10 20:30:00
Continued 2026-08-10 20:01:34 2026-08-10 20:30:00
Cancelled 2026-08-10 20:12:34 2026-08-10 20:30:00
Continued 2026-08-10 20:12:34 2026-08-10 20:30:00
Expired 2026-08-10 20:24:35 2026-08-10 20:30:00


Action: New
Issued At: 2026-08-10 19:28:02

614 
WUUS53 KUNR 110027
SVRUNR
SDC063-105-110130-
/O.NEW.KUNR.SV.W.0247.260811T0027Z-260811T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Rapid City SD
627 PM MDT Mon Aug 10 2026

The National Weather Service in Rapid City has issued a

* Severe Thunderstorm Warning for...
  Northeastern Harding County in northwestern South Dakota...
  Northwestern Perkins County in northwestern South Dakota...

* Until 730 PM MDT.

* At 627 PM MDT, a severe thunderstorm was located 16 miles north of
  Ralph, or 34 miles northeast of Buffalo, moving southeast at 25
  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.

* Locations impacted include...
  Ralph and Lodgepole.

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 4561 10295 4560 10297 4595 10326 4595 10274
      4588 10253
TIME...MOT...LOC 0027Z 304DEG 23KT 4600 10316

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: 2026-08-10 19:48:03

357 
WWUS53 KUNR 110047
SVSUNR

Severe Weather Statement
National Weather Service Rapid City SD
647 PM MDT Mon Aug 10 2026

SDC063-105-110130-
/O.CON.KUNR.SV.W.0247.000000T0000Z-260811T0130Z/
Harding SD-Perkins SD-
647 PM MDT Mon Aug 10 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MDT FOR
NORTHEASTERN HARDING AND NORTHWESTERN PERKINS COUNTIES...

At 647 PM MDT, a severe thunderstorm was located 7 miles north of
Ralph, or 32 miles northeast of Buffalo, moving southeast at 30 mph.

HAZARD...Tennis 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...
  Ralph and Lodgepole.

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 4561 10295 4560 10297 4595 10326 4595 10274
      4588 10253
TIME...MOT...LOC 0027Z 324DEG 26KT 4599 10314

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JC


Action: Continued
Issued At: 2026-08-10 20:01:34

710 
WWUS53 KUNR 110101
SVSUNR

Severe Weather Statement
National Weather Service Rapid City SD
701 PM MDT Mon Aug 10 2026

SDC063-105-110130-
/O.CON.KUNR.SV.W.0247.000000T0000Z-260811T0130Z/
Harding SD-Perkins SD-
701 PM MDT Mon Aug 10 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MDT FOR
NORTHEASTERN HARDING AND NORTHWESTERN PERKINS COUNTIES...

At 701 PM MDT, a severe thunderstorm was located 8 miles east of
Ralph, or 34 miles northeast of Buffalo, moving southeast at 30 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.

Locations impacted include...
  Lodgepole.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This dangerous storm is capable of producing large hail driven by
severe winds! Seek shelter now inside a sturdy structure and stay
away from windows! If you are caught outdoors, cover your head and
neck.

&&

LAT...LON 4561 10295 4560 10297 4595 10312 4595 10273
      4588 10253
TIME...MOT...LOC 0047Z 321DEG 26KT 4588 10300

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: Cancelled
Issued At: 2026-08-10 20:12:34

001 
WWUS53 KUNR 110112
SVSUNR

Severe Weather Statement
National Weather Service Rapid City SD
712 PM MDT Mon Aug 10 2026

SDC063-110122-
/O.CAN.KUNR.SV.W.0247.000000T0000Z-260811T0130Z/
Harding SD-
712 PM MDT Mon Aug 10 2026

...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR NORTHEASTERN HARDING
COUNTY...

The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

&&

LAT...LON 4561 10295 4573 10295 4573 10294 4591 10294
      4594 10274 4588 10253
TIME...MOT...LOC 0101Z 321DEG 26KT 4580 10291

$$


SDC105-110130-
/O.CON.KUNR.SV.W.0247.000000T0000Z-260811T0130Z/
Perkins SD-
712 PM MDT Mon Aug 10 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MDT FOR
NORTHWESTERN PERKINS COUNTY...

At 712 PM MDT, a severe thunderstorm was located 8 miles southwest of
Lodgepole, or 34 miles southwest of Lemmon, moving southeast at 30
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...
  Lodgepole.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This dangerous storm is capable of producing large hail driven by
severe winds! Seek shelter now inside a sturdy structure and stay
away from windows! If you are caught outdoors, cover your head and
neck.

This storm has a history or producing large damaging hail.

&&

LAT...LON 4561 10295 4573 10295 4573 10294 4591 10294
      4594 10274 4588 10253
TIME...MOT...LOC 0101Z 318DEG 27KT 4581 10288

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JC


Action: Continued
Issued At: 2026-08-10 20:12:34

001 
WWUS53 KUNR 110112
SVSUNR

Severe Weather Statement
National Weather Service Rapid City SD
712 PM MDT Mon Aug 10 2026

SDC063-110122-
/O.CAN.KUNR.SV.W.0247.000000T0000Z-260811T0130Z/
Harding SD-
712 PM MDT Mon Aug 10 2026

...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR NORTHEASTERN HARDING
COUNTY...

The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

&&

LAT...LON 4561 10295 4573 10295 4573 10294 4591 10294
      4594 10274 4588 10253
TIME...MOT...LOC 0101Z 321DEG 26KT 4580 10291

$$


SDC105-110130-
/O.CON.KUNR.SV.W.0247.000000T0000Z-260811T0130Z/
Perkins SD-
712 PM MDT Mon Aug 10 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MDT FOR
NORTHWESTERN PERKINS COUNTY...

At 712 PM MDT, a severe thunderstorm was located 8 miles southwest of
Lodgepole, or 34 miles southwest of Lemmon, moving southeast at 30
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...
  Lodgepole.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This dangerous storm is capable of producing large hail driven by
severe winds! Seek shelter now inside a sturdy structure and stay
away from windows! If you are caught outdoors, cover your head and
neck.

This storm has a history or producing large damaging hail.

&&

LAT...LON 4561 10295 4573 10295 4573 10294 4591 10294
      4594 10274 4588 10253
TIME...MOT...LOC 0101Z 318DEG 27KT 4581 10288

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JC


Action: Expired
Issued At: 2026-08-10 20:24:35

313 
WWUS53 KUNR 110124
SVSUNR

Severe Weather Statement
National Weather Service Rapid City SD
724 PM MDT Mon Aug 10 2026

SDC105-110134-
/O.EXP.KUNR.SV.W.0247.000000T0000Z-260811T0130Z/
Perkins SD-
724 PM MDT Mon Aug 10 2026

...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 730 PM MDT FOR
NORTHWESTERN PERKINS COUNTY...

The Severe Thunderstorm Warning that was previously in effect has
been reissued for Perkins County and is in effect until 815 PM MDT.
Please refer to that bulletin for the latest severe weather
information.

A Severe Thunderstorm Watch remains in effect until 200 AM MDT
Tuesday for a portion of northwest South Dakota.

&&

LAT...LON 4561 10295 4573 10295 4573 10294 4591 10294
      4594 10274 4588 10253
TIME...MOT...LOC 0112Z 319DEG 27KT 4574 10280

$$

JC



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