998
WUUS53 KUNR 212241
SVRUNR
SDC047-102-212315-
/O.NEW.KUNR.SV.W.0313.260821T2241Z-260821T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Rapid City SD
441 PM MDT Fri Aug 21 2026

The National Weather Service in Rapid City has issued a

* Severe Thunderstorm Warning for...
  Southeastern Fall River County in southwestern South Dakota...
  Southwestern Oglala Lakota County in southwestern South Dakota...

* Until 515 PM MDT.

* At 441 PM MDT, a severe thunderstorm was located over Slim Butte,
  or 21 miles west of Pine Ridge, moving southeast at 30 mph.

  HAZARD...Golf ball size hail and 70 mph wind gusts.

  SOURCE...Automated observations.

  IMPACT...People and animals outdoors will be injured. Expect hail
           damage to roofs, siding, windows, and vehicles. Expect
           considerable tree damage. Wind damage is also likely to
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Slim Butte and Slim Buttes Housing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm has produced widespread
damaging winds and is capable of producing dangerous hail.

&&

LAT...LON 4300 10320 4318 10292 4300 10269 4300 10287
TIME...MOT...LOC 2241Z 321DEG 25KT 4308 10298

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

Helgeson