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Home Return to list Severe Thunderstorm Warning 0050 Issued by the Sioux Falls Forecast Office
Action: New Issued At: 2026-05-17 20:00:37
318
WUUS53 KFSD 180100
SVRFSD
IAC141-143-149-167-180145-
/O.NEW.KFSD.SV.W.0050.260518T0100Z-260518T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
800 PM CDT Sun May 17 2026
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southern Osceola County in northwestern Iowa...
Southeastern Sioux County in northwestern Iowa...
Northeastern Plymouth County in northwestern Iowa...
Northwestern OBrien County in northwestern Iowa...
* Until 845 PM CDT.
* At 759 PM CDT, a severe thunderstorm was located over Archer, or 8
miles southeast of Sheldon, moving northeast at 35 mph.
HAZARD...60 mph wind gusts and quarter 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...
Sanborn and Melvin around 805 PM CDT.
Hartley around 810 PM CDT.
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 northwestern
Iowa.
&&
LAT...LON 4294 9605 4343 9571 4338 9538 4326 9539
4291 9582 4291 9586 4290 9586 4287 9603
TIME...MOT...LOC 0059Z 214DEG 30KT 4312 9571
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Meyers
Action: Continued Issued At: 2026-05-17 20:16:52
915
WWUS53 KFSD 180116
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
816 PM CDT Sun May 17 2026
IAC141-143-149-167-180145-
/O.CON.KFSD.SV.W.0050.000000T0000Z-260518T0145Z/
Osceola IA-Sioux IA-Plymouth IA-OBrien IA-
816 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHEASTERN OSCEOLA...SOUTHEASTERN SIOUX...NORTHEASTERN PLYMOUTH
AND NORTHWESTERN OBRIEN COUNTIES...
At 816 PM CDT, a severe thunderstorm was located near Melvin, or 12
miles east of Sheldon, moving northeast at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Hartley and Melvin around 820 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4291 9604 4342 9563 4338 9538 4326 9539
4291 9582 4291 9586 4290 9586 4287 9603
TIME...MOT...LOC 0116Z 213DEG 29KT 4323 9561
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Meyers
Action: Correction Issued At: 2026-05-17 20:23:07
002
WWUS53 KFSD 180122 CCA
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
822 PM CDT Sun May 17 2026
IAC141-143-149-167-180145-
/O.COR.KFSD.SV.W.0050.000000T0000Z-260518T0145Z/
Osceola IA-Sioux IA-Plymouth IA-OBrien IA-
822 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHEASTERN OSCEOLA...SOUTHEASTERN SIOUX...NORTHEASTERN PLYMOUTH
AND NORTHWESTERN OBRIEN COUNTIES...
At 821 PM CDT, a severe thunderstorm was located near Sanborn, or 12
miles east of Sheldon, moving northeast at 30 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Public. At 810 pm, the pubilc reported golf ball size hail
2 and a half miles south of Sanborn, Iowa!
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 storm will be near...
Hartley and Melvin around 825 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4291 9604 4342 9563 4338 9538 4326 9539
4291 9582 4291 9586 4290 9586 4287 9603
TIME...MOT...LOC 0116Z 215DEG 27KT 4323 9561
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Meyers
Action: Expired Issued At: 2026-05-17 20:42:38
470
WWUS53 KFSD 180142
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
842 PM CDT Sun May 17 2026
IAC141-143-149-167-180150-
/O.EXP.KFSD.SV.W.0050.000000T0000Z-260518T0145Z/
Osceola IA-Sioux IA-Plymouth IA-OBrien IA-
842 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OSCEOLA...
SOUTHEASTERN SIOUX...NORTHEASTERN PLYMOUTH AND NORTHWESTERN OBRIEN
COUNTIES WILL EXPIRE AT 845 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, gusty
winds are still possible with this thunderstorm.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa.
Remember, a Severe Thunderstorm Warning still remains in effect for
portions of OBrien and Osceola counties until 915 pm!
&&
LAT...LON 4291 9604 4342 9563 4338 9538 4326 9539
4291 9582 4291 9586 4290 9586 4287 9603
TIME...MOT...LOC 0140Z 215DEG 27KT 4336 9548
$$
Meyers
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