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Home Return to list Tornado Warning 0016 Issued by the Sioux Falls Forecast Office
Action: New Issued At: 2026-05-17 20:54:39
831
WFUS53 KFSD 180154
TORFSD
IAC041-059-180245-
/O.NEW.KFSD.TO.W.0016.260518T0154Z-260518T0245Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
854 PM CDT Sun May 17 2026
The National Weather Service in Sioux Falls has issued a
* Tornado Warning for...
Dickinson County in northwestern Iowa...
North central Clay County in northwestern Iowa...
* Until 945 PM CDT.
* At 853 PM CDT, severe thunderstorms capable of producing both
tornadoes and extensive straight line wind damage were located near
West Okoboji, or 10 miles southwest of Spirit Lake, moving
northeast at 30 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* These dangerous storms will be near...
Spirit Lake, Milford, Arnolds Park, Lake Park, Okoboji, Orleans,
Wahpeton, and West Okoboji around 900 PM CDT.
Other locations in the path of this tornadic thunderstorm include
Superior.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4321 9516 4333 9536 4350 9530 4350 9491
4336 9492
TIME...MOT...LOC 0153Z 239DEG 24KT 4333 9529
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
BP
Action: Continued Issued At: 2026-05-17 21:11:09
375
WWUS53 KFSD 180211
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
911 PM CDT Sun May 17 2026
IAC041-180220-
/O.CAN.KFSD.TO.W.0016.000000T0000Z-260518T0245Z/
Clay IA-
911 PM CDT Sun May 17 2026
...THE TORNADO WARNING FOR NORTH CENTRAL CLAY COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa.
&&
LAT...LON 4327 9507 4335 9524 4350 9521 4350 9491
4336 9492
TIME...MOT...LOC 0210Z 239DEG 24KT 4339 9515
$$
IAC059-180245-
/O.CON.KFSD.TO.W.0016.000000T0000Z-260518T0245Z/
Dickinson IA-
911 PM CDT Sun May 17 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR EASTERN
DICKINSON COUNTY...
At 910 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Okoboji, or over Spirit Lake, moving northeast at 30 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Spirit Lake, Okoboji, Orleans and Superior.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4327 9507 4335 9524 4350 9521 4350 9491
4336 9492
TIME...MOT...LOC 0210Z 239DEG 24KT 4339 9515
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
BP
Action: Cancelled Issued At: 2026-05-17 21:11:09
375
WWUS53 KFSD 180211
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
911 PM CDT Sun May 17 2026
IAC041-180220-
/O.CAN.KFSD.TO.W.0016.000000T0000Z-260518T0245Z/
Clay IA-
911 PM CDT Sun May 17 2026
...THE TORNADO WARNING FOR NORTH CENTRAL CLAY COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa.
&&
LAT...LON 4327 9507 4335 9524 4350 9521 4350 9491
4336 9492
TIME...MOT...LOC 0210Z 239DEG 24KT 4339 9515
$$
IAC059-180245-
/O.CON.KFSD.TO.W.0016.000000T0000Z-260518T0245Z/
Dickinson IA-
911 PM CDT Sun May 17 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR EASTERN
DICKINSON COUNTY...
At 910 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Okoboji, or over Spirit Lake, moving northeast at 30 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Spirit Lake, Okoboji, Orleans and Superior.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4327 9507 4335 9524 4350 9521 4350 9491
4336 9492
TIME...MOT...LOC 0210Z 239DEG 24KT 4339 9515
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
BP
Action: Continued Issued At: 2026-05-17 21:26:40
723
WWUS53 KFSD 180226
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
926 PM CDT Sun May 17 2026
IAC059-180245-
/O.CON.KFSD.TO.W.0016.000000T0000Z-260518T0245Z/
Dickinson IA-
926 PM CDT Sun May 17 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR
NORTHEASTERN DICKINSON COUNTY...
At 926 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located near
Orleans, or near Spirit Lake, moving northeast at 30 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Superior.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4341 9505 4350 9507 4350 9491 4336 9492
TIME...MOT...LOC 0226Z 239DEG 24KT 4345 9502
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
BP
Action: Expired Issued At: 2026-05-17 21:35:40 997 WWUS53 KFSD 180235 SVSFSD Severe Weather Statement National Weather Service Sioux Falls SD 935 PM CDT Sun May 17 2026 IAC059-180245- /O.EXP.KFSD.TO.W.0016.000000T0000Z-260518T0245Z/ Dickinson IA- 935 PM CDT Sun May 17 2026 ...THE TORNADO WARNING FOR NORTHEASTERN DICKINSON COUNTY WILL EXPIRE AT 945 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. To report severe weather, contact your nearest law enforcement agency. They will relay your report to the National Weather Service Sioux Falls. && LAT...LON 4341 9505 4350 9507 4350 9491 4336 9492 TIME...MOT...LOC 0235Z 239DEG 24KT 4348 9495 $$ BP | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||