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Home Return to list Severe Thunderstorm Warning 0036 Issued by the Sioux Falls Forecast Office
Action: New Issued At: 2026-05-17 14:10:24
794
WUUS53 KFSD 171910
SVRFSD
SDC023-053-172000-
/O.NEW.KFSD.SV.W.0036.260517T1910Z-260517T2000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
210 PM CDT Sun May 17 2026
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southeastern Charles Mix County in south central South Dakota...
Southeastern Gregory County in south central South Dakota...
* Until 300 PM CDT.
* At 209 PM CDT, a severe thunderstorm was located near Spencer,
moving northeast at 55 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Pickstown around 215 PM CDT.
Lake Andes and Marty around 220 PM CDT.
Ravinia around 225 PM CDT.
Other locations in the path of this severe thunderstorm include
Wagner.
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 4293 9844 4300 9851 4300 9886 4334 9857
4318 9808 4310 9811 4295 9810 4288 9829
TIME...MOT...LOC 1909Z 226DEG 50KT 4293 9874
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Weisser
Action: Continued Issued At: 2026-05-17 14:23:56
172
WWUS53 KFSD 171923
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
223 PM CDT Sun May 17 2026
SDC023-053-172000-
/O.CON.KFSD.SV.W.0036.000000T0000Z-260517T2000Z/
Charles Mix SD-Gregory SD-
223 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR SOUTHEASTERN CHARLES MIX AND SOUTHEASTERN GREGORY COUNTIES...
At 223 PM CDT, a severe thunderstorm was located near Gross, or near
Pickstown, moving northeast at 45 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Lake Andes, Pickstown, Wagner, Marty, and Ravinia around 230 PM
CDT.
Other locations in the path of this severe thunderstorm include
Dante.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for south central
and southeastern South Dakota.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4293 9844 4300 9851 4300 9886 4334 9857
4318 9808 4310 9811 4295 9810 4288 9829
TIME...MOT...LOC 1923Z 240DEG 40KT 4300 9858
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Weisser
Action: Continued Issued At: 2026-05-17 14:32:26
429
WWUS53 KFSD 171932
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
232 PM CDT Sun May 17 2026
SDC023-053-172000-
/O.CON.KFSD.SV.W.0036.000000T0000Z-260517T2000Z/
Charles Mix SD-Gregory SD-
232 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR SOUTHEASTERN CHARLES MIX AND SOUTHEASTERN GREGORY COUNTIES...
At 231 PM CDT, a severe thunderstorm was located over Marty, or near
Pickstown, moving northeast at 55 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 storm will be near...
Marty, Wagner, Dante, and Ravinia around 235 PM CDT.
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 4293 9844 4300 9851 4300 9886 4334 9857
4318 9808 4310 9811 4295 9810 4288 9829
TIME...MOT...LOC 1931Z 234DEG 49KT 4302 9841
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Weisser
Action: Cancelled Issued At: 2026-05-17 14:43:26
544
WWUS53 KFSD 171942
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
242 PM CDT Sun May 17 2026
SDC053-171952-
/O.CAN.KFSD.SV.W.0036.000000T0000Z-260517T2000Z/
Gregory SD-
242 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GREGORY COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for south central
and southeastern South Dakota.
&&
LAT...LON 4293 9844 4300 9851 4303 9851 4307 9860
4307 9868 4313 9875 4334 9857 4318 9808
4310 9811 4295 9810 4288 9829
TIME...MOT...LOC 1942Z 249DEG 48KT 4303 9829
$$
SDC023-172000-
/O.CON.KFSD.SV.W.0036.000000T0000Z-260517T2000Z/
Charles Mix SD-
242 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR SOUTHEASTERN CHARLES MIX COUNTY...
At 242 PM CDT, a severe thunderstorm was located over Wagner, or 12
miles east of Pickstown, moving east at 55 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 storm will be near...
Wagner and Dante around 245 PM CDT.
At 240 pm...Quarter sized hail was reported 2 miles southeast of
Marty.
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 4293 9844 4300 9851 4303 9851 4307 9860
4307 9868 4313 9875 4334 9857 4318 9808
4310 9811 4295 9810 4288 9829
TIME...MOT...LOC 1942Z 249DEG 48KT 4303 9829
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Weisser
Action: Continued Issued At: 2026-05-17 14:43:26
544
WWUS53 KFSD 171942
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
242 PM CDT Sun May 17 2026
SDC053-171952-
/O.CAN.KFSD.SV.W.0036.000000T0000Z-260517T2000Z/
Gregory SD-
242 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GREGORY COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for south central
and southeastern South Dakota.
&&
LAT...LON 4293 9844 4300 9851 4303 9851 4307 9860
4307 9868 4313 9875 4334 9857 4318 9808
4310 9811 4295 9810 4288 9829
TIME...MOT...LOC 1942Z 249DEG 48KT 4303 9829
$$
SDC023-172000-
/O.CON.KFSD.SV.W.0036.000000T0000Z-260517T2000Z/
Charles Mix SD-
242 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR SOUTHEASTERN CHARLES MIX COUNTY...
At 242 PM CDT, a severe thunderstorm was located over Wagner, or 12
miles east of Pickstown, moving east at 55 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 storm will be near...
Wagner and Dante around 245 PM CDT.
At 240 pm...Quarter sized hail was reported 2 miles southeast of
Marty.
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 4293 9844 4300 9851 4303 9851 4307 9860
4307 9868 4313 9875 4334 9857 4318 9808
4310 9811 4295 9810 4288 9829
TIME...MOT...LOC 1942Z 249DEG 48KT 4303 9829
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Weisser
Action: Continued Issued At: 2026-05-17 14:54:57
886
WWUS53 KFSD 171954
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
254 PM CDT Sun May 17 2026
SDC023-172000-
/O.CON.KFSD.SV.W.0036.000000T0000Z-260517T2000Z/
Charles Mix SD-
254 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR SOUTHEASTERN CHARLES MIX COUNTY...
At 254 PM CDT, a severe thunderstorm was located 8 miles northeast of
Dante, or 17 miles northwest of Tyndall, moving northeast at 60 mph.
HAZARD...70 mph wind gusts and ping pong ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
This severe thunderstorm will remain over mainly rural areas of
southeastern Charles Mix County, including the following locations...
Yankton Sioux Tribal Nation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for south central
and southeastern South Dakota.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4293 9844 4330 9847 4318 9808 4310 9811
4295 9810 4288 9829
TIME...MOT...LOC 1954Z 226DEG 50KT 4315 9812
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Weisser
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