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Home Return to list Severe Thunderstorm Warning 0051 Issued by the Sioux Falls Forecast Office
Action: New Issued At: 2026-05-17 20:22:07
986
WUUS53 KFSD 180121
SVRFSD
IAC021-035-041-059-093-141-143-149-193-180215-
/O.NEW.KFSD.SV.W.0051.260518T0121Z-260518T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
821 PM CDT Sun May 17 2026
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Cherokee County in northwestern Iowa...
Northeastern Woodbury County in west central Iowa...
Southeastern Osceola County in northwestern Iowa...
Dickinson County in northwestern Iowa...
Southeastern Plymouth County in northwestern Iowa...
Buena Vista County in northwestern Iowa...
Clay County in northwestern Iowa...
OBrien County in northwestern Iowa...
Ida County in west central Iowa...
* Until 915 PM CDT.
* At 819 PM CDT, severe thunderstorms were located along a line
extending from near Paullina to near Aurelia to near Galva, moving
northeast at 65 mph.
THESE ARE DESTRUCTIVE STORMS FOR QUIMBY, CHEROKEE, WASHTA, AND
AURELIA.
HAZARD...80 mph wind gusts and quarter size hail.
SOURCE...Mesonet. At 754 PM CDT, a 74 mph gust was reported via
personal weather station west of Correctionville, IA.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be heavily damaged. Expect
considerable damage to roofs, windows, and vehicles.
Extensive tree damage and power outages are likely.
* Severe thunderstorms will be near...
Storm Lake, Alta, Paullina, Primghar, Sutherland, and Peterson
around 825 PM CDT.
Lakeside, Linn Grove, and Truesdale around 830 PM CDT.
Hartley, Sioux Rapids, and Royal around 835 PM CDT.
Other locations in the path of these severe thunderstorms include
Spencer In Clay County, Albert City, Everly, Marathon, Webb,
Greenville, Fostoria, Milford, Lost Island Lake, Arnolds Park, Terril
and West Okoboji.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.
&&
LAT...LON 4244 9597 4274 9617 4292 9584 4337 9539
4348 9524 4336 9491 4257 9491 4256 9539
4248 9539 4247 9533 4222 9532 4221 9563
TIME...MOT...LOC 0119Z 231DEG 57KT 4293 9573 4274 9548 4254 9542
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...80 MPH
$$
BP
Action: Continued Issued At: 2026-05-17 20:43:38
631
WWUS53 KFSD 180143
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
843 PM CDT Sun May 17 2026
IAC093-149-193-180150-
/O.CAN.KFSD.SV.W.0051.000000T0000Z-260518T0215Z/
Woodbury IA-Plymouth IA-Ida IA-
843 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WOODBURY...
SOUTHEASTERN PLYMOUTH AND IDA COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
and west central Iowa.
&&
LAT...LON 4257 9491 4256 9556 4291 9586 4337 9539
4348 9524 4336 9491
TIME...MOT...LOC 0140Z 231DEG 57KT 4312 9541 4293 9516 4273 9510
$$
IAC021-035-041-059-141-143-180215-
/O.CON.KFSD.SV.W.0051.000000T0000Z-260518T0215Z/
Cherokee IA-Osceola IA-Dickinson IA-Buena Vista IA-Clay IA-
OBrien IA-
843 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR CHEROKEE...SOUTHEASTERN OSCEOLA...DICKINSON...BUENA VISTA...CLAY
AND OBRIEN COUNTIES...
At 840 PM CDT, severe thunderstorms were located along a line
extending from near Hartley to near Sioux Rapids to near Truesdale,
moving northeast at 65 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Mesonet. At 829 PM CDT, a 62 mph wind gust was reported
north of Cleghorn.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Spencer In Clay County, Albert City, Everly, Royal, Marathon,
Webb, Greenville, Fostoria, Milford, Arnolds Park, West Okoboji,
Lost Island Lake, Okoboji and Terril.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
and west central Iowa.
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Cherokee and northern Buena Vista counties. SEEK
SHELTER NOW inside a sturdy structure and stay away from windows.
&&
LAT...LON 4257 9491 4256 9556 4291 9586 4337 9539
4348 9524 4336 9491
TIME...MOT...LOC 0140Z 231DEG 57KT 4312 9541 4293 9516 4273 9510
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
BP
Action: Cancelled Issued At: 2026-05-17 20:43:38
631
WWUS53 KFSD 180143
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
843 PM CDT Sun May 17 2026
IAC093-149-193-180150-
/O.CAN.KFSD.SV.W.0051.000000T0000Z-260518T0215Z/
Woodbury IA-Plymouth IA-Ida IA-
843 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WOODBURY...
SOUTHEASTERN PLYMOUTH AND IDA COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
and west central Iowa.
&&
LAT...LON 4257 9491 4256 9556 4291 9586 4337 9539
4348 9524 4336 9491
TIME...MOT...LOC 0140Z 231DEG 57KT 4312 9541 4293 9516 4273 9510
$$
IAC021-035-041-059-141-143-180215-
/O.CON.KFSD.SV.W.0051.000000T0000Z-260518T0215Z/
Cherokee IA-Osceola IA-Dickinson IA-Buena Vista IA-Clay IA-
OBrien IA-
843 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR CHEROKEE...SOUTHEASTERN OSCEOLA...DICKINSON...BUENA VISTA...CLAY
AND OBRIEN COUNTIES...
At 840 PM CDT, severe thunderstorms were located along a line
extending from near Hartley to near Sioux Rapids to near Truesdale,
moving northeast at 65 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Mesonet. At 829 PM CDT, a 62 mph wind gust was reported
north of Cleghorn.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Spencer In Clay County, Albert City, Everly, Royal, Marathon,
Webb, Greenville, Fostoria, Milford, Arnolds Park, West Okoboji,
Lost Island Lake, Okoboji and Terril.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
and west central Iowa.
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Cherokee and northern Buena Vista counties. SEEK
SHELTER NOW inside a sturdy structure and stay away from windows.
&&
LAT...LON 4257 9491 4256 9556 4291 9586 4337 9539
4348 9524 4336 9491
TIME...MOT...LOC 0140Z 231DEG 57KT 4312 9541 4293 9516 4273 9510
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
BP
Action: Cancelled Issued At: 2026-05-17 20:59:09
061
WWUS53 KFSD 180158
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
858 PM CDT Sun May 17 2026
IAC035-141-143-180206-
/O.CAN.KFSD.SV.W.0051.000000T0000Z-260518T0215Z/
Cherokee IA-Osceola IA-OBrien IA-
858 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR CHEROKEE...SOUTHEASTERN
OSCEOLA AND OBRIEN COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa.
&&
LAT...LON 4257 9491 4257 9503 4291 9539 4336 9539
4348 9524 4336 9491
TIME...MOT...LOC 0156Z 228DEG 54KT 4335 9527 4306 9500 4283 9486
$$
IAC021-041-059-180215-
/O.CON.KFSD.SV.W.0051.000000T0000Z-260518T0215Z/
Dickinson IA-Buena Vista IA-Clay IA-
858 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR DICKINSON...BUENA VISTA AND CLAY COUNTIES...
At 856 PM CDT, severe thunderstorms were located along a line
extending from near Wahpeton to 6 miles west of Silver Lake to
Laurens, moving northeast at 60 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Mesonet. At 848 PM CDT, a 72 mph wind gust was reported via
personal weather station 4 miles south of Albert City.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Spencer In Clay County, Spirit Lake, Milford, Arnolds Park, Newell,
Okoboji, Sioux Rapids, Albert City, Everly, Royal, Terril, Wahpeton,
Peterson, West Okoboji, Marathon, Fostoria, Linn Grove, Webb,
Truesdale, and Greenville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa.
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Clay County Iowa. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows.
&&
LAT...LON 4257 9491 4257 9503 4291 9539 4336 9539
4348 9524 4336 9491
TIME...MOT...LOC 0156Z 228DEG 54KT 4335 9527 4306 9500 4283 9486
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
BP
Action: Continued Issued At: 2026-05-17 20:59:09
061
WWUS53 KFSD 180158
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
858 PM CDT Sun May 17 2026
IAC035-141-143-180206-
/O.CAN.KFSD.SV.W.0051.000000T0000Z-260518T0215Z/
Cherokee IA-Osceola IA-OBrien IA-
858 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR CHEROKEE...SOUTHEASTERN
OSCEOLA AND OBRIEN COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa.
&&
LAT...LON 4257 9491 4257 9503 4291 9539 4336 9539
4348 9524 4336 9491
TIME...MOT...LOC 0156Z 228DEG 54KT 4335 9527 4306 9500 4283 9486
$$
IAC021-041-059-180215-
/O.CON.KFSD.SV.W.0051.000000T0000Z-260518T0215Z/
Dickinson IA-Buena Vista IA-Clay IA-
858 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR DICKINSON...BUENA VISTA AND CLAY COUNTIES...
At 856 PM CDT, severe thunderstorms were located along a line
extending from near Wahpeton to 6 miles west of Silver Lake to
Laurens, moving northeast at 60 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Mesonet. At 848 PM CDT, a 72 mph wind gust was reported via
personal weather station 4 miles south of Albert City.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Spencer In Clay County, Spirit Lake, Milford, Arnolds Park, Newell,
Okoboji, Sioux Rapids, Albert City, Everly, Royal, Terril, Wahpeton,
Peterson, West Okoboji, Marathon, Fostoria, Linn Grove, Webb,
Truesdale, and Greenville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa.
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across Clay County Iowa. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows.
&&
LAT...LON 4257 9491 4257 9503 4291 9539 4336 9539
4348 9524 4336 9491
TIME...MOT...LOC 0156Z 228DEG 54KT 4335 9527 4306 9500 4283 9486
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
BP
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