508
WUUS53 KFSD 190007
SVRFSD
IAC059-143-MNC105-190045-
/O.NEW.KFSD.SV.W.0236.260819T0007Z-260819T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
707 PM CDT Tue Aug 18 2026

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Osceola County in northwestern Iowa...
  Southwestern Dickinson County in northwestern Iowa...
  South central Nobles County in southwestern Minnesota...

* Until 745 PM CDT.

* At 705 PM CDT, a severe thunderstorm was located near Sibley,
  moving southeast 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...
  Bigelow through 715 PM CDT.
  Ocheyedan and Harris around 720 PM CDT.

Other locations in the path of this severe thunderstorm include Lake
Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 4325 9524 4326 9562 4350 9581 4350 9574
      4358 9562 4337 9521
TIME...MOT...LOC 0005Z 309DEG 30KT 4349 9568

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JH