827 
WUUS53 KFSD 171949
SVRFSD
SDC009-067-135-172030-
/O.NEW.KFSD.SV.W.0038.260517T1949Z-260517T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
249 PM CDT Sun May 17 2026

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Bon Homme County in southeastern South Dakota...
  Yankton County in southeastern South Dakota...
  Southeastern Hutchinson County in southeastern South Dakota...

* Until 330 PM CDT.

* At 249 PM CDT, a severe thunderstorm was located near Avon, or 13
  miles west of Tyndall, moving east at 50 mph.

  HAZARD...70 mph wind gusts and ping pong ball size hail.

  SOURCE...Radar indicated.

  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.

* This severe thunderstorm will be near...
  Tyndall, Springfield, and Avon around 255 PM CDT.

Other locations in the path of this severe thunderstorm include
Tabor, Scotland and Utica.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

A Tornado Watch remains in effect until 1000 PM CDT for south central
and southeastern South Dakota.

&&

LAT...LON 4284 9815 4289 9811 4306 9811 4318 9808
      4334 9744 4328 9740 4317 9739 4317 9732
      4300 9721 4284 9770 4287 9784 4277 9795
      4277 9805
TIME...MOT...LOC 1949Z 251DEG 45KT 4293 9811 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Weisser

514 
WWUS53 KFSD 172012
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
312 PM CDT Sun May 17 2026

SDC009-067-135-172030-
/O.CON.KFSD.SV.W.0038.000000T0000Z-260517T2030Z/
Bon Homme SD-Yankton SD-Hutchinson SD-
312 PM CDT Sun May 17 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT
FOR BON HOMME...YANKTON AND SOUTHEASTERN HUTCHINSON COUNTIES...

At 312 PM CDT, a severe thunderstorm was located near Tyndall, moving
east at 50 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated.

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...
  Scotland, Tabor, Utica and Mayfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CDT for south central
and southeastern South Dakota.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4284 9815 4289 9811 4306 9811 4318 9808
      4334 9744 4328 9740 4317 9739 4317 9732
      4300 9721 4284 9770 4287 9784 4277 9795
      4277 9805
TIME...MOT...LOC 2012Z 251DEG 42KT 4302 9775 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Weisser