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Home Return to list Severe Thunderstorm Warning 0217 Issued by the Sioux Falls Forecast Office
Action: New Issued At: 2026-08-09 03:35:03
012
WUUS53 KFSD 090834
SVRFSD
IAC041-059-090930-
/O.NEW.KFSD.SV.W.0217.260809T0834Z-260809T0930Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
334 AM CDT Sun Aug 9 2026
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southeastern Dickinson County in northwestern Iowa...
Northern Clay County in northwestern Iowa...
* Until 430 AM CDT.
* At 334 AM CDT, a severe thunderstorm was located over Spencer In
Clay County, moving northeast at 20 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
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 thunderstorm will be near...
Spencer In Clay County and Fostoria around 340 AM CDT.
Other locations in the path of this severe thunderstorm include
Terril and Lost Island Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Sioux Falls.
&&
LAT...LON 4316 9491 4307 9519 4318 9531 4344 9498
4334 9491
TIME...MOT...LOC 0834Z 235DEG 18KT 4314 9520
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
IG
Action: Continued Issued At: 2026-08-09 03:52:03
417
WWUS53 KFSD 090851
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
351 AM CDT Sun Aug 9 2026
IAC041-059-090930-
/O.CON.KFSD.SV.W.0217.000000T0000Z-260809T0930Z/
Dickinson IA-Clay IA-
351 AM CDT Sun Aug 9 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 AM CDT
FOR SOUTHEASTERN DICKINSON AND NORTHEASTERN CLAY COUNTIES...
At 351 AM CDT, a severe thunderstorm was located near Fostoria, or
near Spencer In Clay County, moving northeast at 20 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Terril and Lost Island Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Sioux Falls.
&&
LAT...LON 4309 9511 4324 9523 4344 9498 4334 9491
4316 9491
TIME...MOT...LOC 0851Z 231DEG 18KT 4320 9510
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
IG
Action: Continued Issued At: 2026-08-09 04:13:19
050
WWUS53 KFSD 090912
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
412 AM CDT Sun Aug 9 2026
IAC041-059-090930-
/O.CON.KFSD.SV.W.0217.000000T0000Z-260809T0930Z/
Dickinson IA-Clay IA-
412 AM CDT Sun Aug 9 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 AM CDT
FOR SOUTHEASTERN DICKINSON AND NORTHEASTERN CLAY COUNTIES...
At 412 AM CDT, a severe thunderstorm was located near Terril, or 11
miles southwest of Estherville, moving northeast at 20 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.
Locations impacted include...
Terril and Lost Island Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Sioux Falls.
&&
LAT...LON 4313 9500 4328 9518 4344 9498 4334 9491
4316 9491
TIME...MOT...LOC 0912Z 235DEG 18KT 4326 9498
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
IG
Action: Expired Issued At: 2026-08-09 04:28:05
369
WWUS53 KFSD 090927
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
427 AM CDT Sun Aug 9 2026
IAC041-059-090937-
/O.EXP.KFSD.SV.W.0217.000000T0000Z-260809T0930Z/
Dickinson IA-Clay IA-
427 AM CDT Sun Aug 9 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DICKINSON AND
NORTHEASTERN CLAY COUNTIES WILL EXPIRE AT 430 AM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However, gusty
winds and heavy rain are still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Sioux Falls.
Remember, a Severe Thunderstorm Warning still remains in effect for
portions of Dickinson County through 5 am.
&&
LAT...LON 4313 9500 4328 9518 4344 9498 4334 9491
4316 9491
TIME...MOT...LOC 0927Z 235DEG 18KT 4330 9490
$$
IG
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