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Home Return to list Severe Thunderstorm Warning 0225 Issued by the Sioux Falls Forecast Office
Action: New Issued At: 2026-08-11 04:16:04
712
WUUS53 KFSD 110915
SVRFSD
IAC119-167-SDC083-111000-
/O.NEW.KFSD.SV.W.0225.260811T0915Z-260811T1000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
415 AM CDT Tue Aug 11 2026
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southwestern Lyon County in northwestern Iowa...
Northwestern Sioux County in northwestern Iowa...
Central Lincoln County in southeastern South Dakota...
* Until 500 AM CDT.
* At 415 AM CDT, a severe thunderstorm was located near Newton Hills
State Park, or near Canton, moving north at 10 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...
Canton and Worthing around 420 AM CDT.
Inwood around 435 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4316 9653 4326 9681 4342 9681 4333 9639
TIME...MOT...LOC 0915Z 196DEG 9KT 4326 9662
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AP
Action: Continued Issued At: 2026-08-11 04:32:19
079
WWUS53 KFSD 110931
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
431 AM CDT Tue Aug 11 2026
IAC119-167-SDC083-111000-
/O.CON.KFSD.SV.W.0225.000000T0000Z-260811T1000Z/
Lyon IA-Sioux IA-Lincoln SD-
431 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR SOUTHWESTERN LYON...NORTHWESTERN SIOUX AND CENTRAL LINCOLN
COUNTIES...
At 431 AM CDT, a severe thunderstorm was located over Canton, moving
north at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Canton and Inwood around 435 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4317 9652 4328 9681 4342 9681 4333 9639
TIME...MOT...LOC 0931Z 196DEG 9KT 4330 9660
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AP
Action: Continued Issued At: 2026-08-11 04:41:35
205
WWUS53 KFSD 110941
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
441 AM CDT Tue Aug 11 2026
IAC119-167-SDC083-111000-
/O.CON.KFSD.SV.W.0225.000000T0000Z-260811T1000Z/
Lyon IA-Sioux IA-Lincoln SD-
441 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR SOUTHWESTERN LYON...NORTHWESTERN SIOUX AND EAST CENTRAL LINCOLN
COUNTIES...
At 441 AM CDT, a severe thunderstorm was located over Canton, moving
north at 10 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...
Inwood around 445 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4317 9652 4322 9665 4337 9658 4333 9639
TIME...MOT...LOC 0941Z 196DEG 9KT 4332 9659
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AP
Action: Cancelled Issued At: 2026-08-11 04:50:35 497 WWUS53 KFSD 110950 SVSFSD Severe Weather Statement National Weather Service Sioux Falls SD 450 AM CDT Tue Aug 11 2026 IAC119-167-SDC083-110959- /O.CAN.KFSD.SV.W.0225.000000T0000Z-260811T1000Z/ Lyon IA-Sioux IA-Lincoln SD- 450 AM CDT Tue Aug 11 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LYON... NORTHWESTERN SIOUX AND EAST CENTRAL LINCOLN COUNTIES IS CANCELLED... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been cancelled. && LAT...LON 4317 9652 4322 9665 4337 9658 4333 9639 TIME...MOT...LOC 0948Z 196DEG 9KT 4334 9658 $$ AP | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||