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Home Return to list Severe Thunderstorm Warning 0170 Issued by the La Crosse Forecast Office
Action: New Issued At: 2026-08-11 07:08:09
091
WUUS53 KARX 111207
SVRARX
IAC005-037-043-065-089-191-111315-
/O.NEW.KARX.SV.W.0170.260811T1207Z-260811T1315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
707 AM CDT Tue Aug 11 2026
The National Weather Service in La Crosse has issued a
* Severe Thunderstorm Warning for...
Southern Howard County in northeastern Iowa...
Clayton County in northeastern Iowa...
Fayette County in northeastern Iowa...
Southwestern Allamakee County in northeastern Iowa...
Southern Winneshiek County in northeastern Iowa...
Chickasaw County in northeastern Iowa...
* Until 815 AM CDT.
* At 707 AM CDT, severe thunderstorms were located along a line
extending from 8 miles northwest of Ionia to near Hawkeye to near
Oelwein, moving east 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.
* Locations impacted include...
Oelwein, New Hampton, West Union, Elkader, Postville, Monona,
Fayette, Strawberry Point, Fairbank, Calmar, Edgewood, Ossian,
Riceville, Garnavillo, Elgin, Clermont, Elma, Maynard, Hawkeye, and
Lawler.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4264 9206 4296 9205 4306 9254 4338 9255
4318 9124 4264 9124
TIME...MOT...LOC 1207Z 267DEG 31KT 4314 9253 4297 9192 4266 9197
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Skow
Action: Continued Issued At: 2026-08-11 07:27:40
595
WWUS53 KARX 111227
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
727 AM CDT Tue Aug 11 2026
IAC005-037-043-065-089-191-111315-
/O.CON.KARX.SV.W.0170.000000T0000Z-260811T1315Z/
Howard IA-Clayton IA-Fayette IA-Allamakee IA-Winneshiek IA-
Chickasaw IA-
727 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT
FOR SOUTHERN HOWARD...CLAYTON...NORTHEASTERN FAYETTE...SOUTHWESTERN
ALLAMAKEE...SOUTHERN WINNESHIEK AND NORTHERN CHICKASAW COUNTIES...
At 726 AM CDT, severe thunderstorms were located along a line
extending from Elma to near Postville to Strawberry Point, moving
east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Elkader, Postville, Monona, Strawberry Point, Calmar, Edgewood,
Ossian, Riceville, Garnavillo, Elgin, Clermont, Elma, Lawler,
Arlington, Spillville, Fort Atkinson, Ridgeway, Farmersburg,
Protivin, and Waucoma.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4264 9175 4298 9177 4316 9254 4338 9255
4318 9124 4264 9124
TIME...MOT...LOC 1226Z 250DEG 47KT 4325 9244 4311 9153 4266 9151
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Skow
Action: Continued Issued At: 2026-08-11 07:34:40
879
WWUS53 KARX 111234
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
734 AM CDT Tue Aug 11 2026
IAC005-037-089-191-111243-
/O.CAN.KARX.SV.W.0170.000000T0000Z-260811T1315Z/
Howard IA-Allamakee IA-Winneshiek IA-Chickasaw IA-
734 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HOWARD...SOUTHWESTERN
ALLAMAKEE...SOUTHERN WINNESHIEK AND NORTHERN CHICKASAW COUNTIES IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area Therefore, the warning has been cancelled. However, parts of
Winneshiek and Allamakee counties remain under a new severe
thunderstorm warning.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
northeastern Iowa.
&&
LAT...LON 4264 9172 4290 9175 4301 9124 4283 9124
4264 9125
TIME...MOT...LOC 1233Z 269DEG 32KT 4290 9156 4264 9145
$$
IAC043-065-111315-
/O.CON.KARX.SV.W.0170.000000T0000Z-260811T1315Z/
Clayton IA-Fayette IA-
734 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT
FOR WESTERN CLAYTON AND SOUTHEASTERN FAYETTE COUNTIES...
At 733 AM CDT, severe thunderstorms were located along a line
extending from near Elgin to near Edgewood, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Elkader, Strawberry Point, Edgewood, Garnavillo, Arlington,
Farmersburg, Volga, Wadena, St. Olaf, Garber, Elkport, Camp C.S.
Klaus, Mederville, Highways 3 And 187, Bixby State Park, Highway 13
And County C 24, National, Osborne, County Roads 3 And W 45, and
Littleport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4264 9172 4290 9175 4301 9124 4283 9124
4264 9125
TIME...MOT...LOC 1233Z 269DEG 32KT 4290 9156 4264 9145
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Skow
Action: Cancelled Issued At: 2026-08-11 07:34:40
879
WWUS53 KARX 111234
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
734 AM CDT Tue Aug 11 2026
IAC005-037-089-191-111243-
/O.CAN.KARX.SV.W.0170.000000T0000Z-260811T1315Z/
Howard IA-Allamakee IA-Winneshiek IA-Chickasaw IA-
734 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HOWARD...SOUTHWESTERN
ALLAMAKEE...SOUTHERN WINNESHIEK AND NORTHERN CHICKASAW COUNTIES IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area Therefore, the warning has been cancelled. However, parts of
Winneshiek and Allamakee counties remain under a new severe
thunderstorm warning.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
northeastern Iowa.
&&
LAT...LON 4264 9172 4290 9175 4301 9124 4283 9124
4264 9125
TIME...MOT...LOC 1233Z 269DEG 32KT 4290 9156 4264 9145
$$
IAC043-065-111315-
/O.CON.KARX.SV.W.0170.000000T0000Z-260811T1315Z/
Clayton IA-Fayette IA-
734 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT
FOR WESTERN CLAYTON AND SOUTHEASTERN FAYETTE COUNTIES...
At 733 AM CDT, severe thunderstorms were located along a line
extending from near Elgin to near Edgewood, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Elkader, Strawberry Point, Edgewood, Garnavillo, Arlington,
Farmersburg, Volga, Wadena, St. Olaf, Garber, Elkport, Camp C.S.
Klaus, Mederville, Highways 3 And 187, Bixby State Park, Highway 13
And County C 24, National, Osborne, County Roads 3 And W 45, and
Littleport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4264 9172 4290 9175 4301 9124 4283 9124
4264 9125
TIME...MOT...LOC 1233Z 269DEG 32KT 4290 9156 4264 9145
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Skow
Action: Cancelled Issued At: 2026-08-11 07:38:10
916
WWUS53 KARX 111237
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
737 AM CDT Tue Aug 11 2026
IAC065-111247-
/O.CAN.KARX.SV.W.0170.000000T0000Z-260811T1315Z/
Fayette IA-
737 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FAYETTE COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
northeastern Iowa.
&&
LAT...LON 4279 9161 4281 9124 4264 9125 4265 9161
TIME...MOT...LOC 1237Z 267DEG 31KT 4290 9153 4264 9142
$$
IAC043-111315-
/O.CON.KARX.SV.W.0170.000000T0000Z-260811T1315Z/
Clayton IA-
737 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT
FOR SOUTHWESTERN CLAYTON COUNTY...
At 737 AM CDT, severe thunderstorms were located along a line
extending from 6 miles southeast of Elgin to Edgewood, moving east at
35 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Strawberry Point, Edgewood, Garber, Elkport, Camp C.S. Klaus,
Mederville, Wood, Communia, Bixby State Park, Highway 13 And County C
24, Thomasville, Joy Springs County Park, Littleport, Saint Sebald,
and Osborne.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4279 9161 4281 9124 4264 9125 4265 9161
TIME...MOT...LOC 1237Z 267DEG 31KT 4290 9153 4264 9142
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Skow
Action: Continued Issued At: 2026-08-11 07:38:10
916
WWUS53 KARX 111237
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
737 AM CDT Tue Aug 11 2026
IAC065-111247-
/O.CAN.KARX.SV.W.0170.000000T0000Z-260811T1315Z/
Fayette IA-
737 AM CDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FAYETTE COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
northeastern Iowa.
&&
LAT...LON 4279 9161 4281 9124 4264 9125 4265 9161
TIME...MOT...LOC 1237Z 267DEG 31KT 4290 9153 4264 9142
$$
IAC043-111315-
/O.CON.KARX.SV.W.0170.000000T0000Z-260811T1315Z/
Clayton IA-
737 AM CDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT
FOR SOUTHWESTERN CLAYTON COUNTY...
At 737 AM CDT, severe thunderstorms were located along a line
extending from 6 miles southeast of Elgin to Edgewood, moving east at
35 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Strawberry Point, Edgewood, Garber, Elkport, Camp C.S. Klaus,
Mederville, Wood, Communia, Bixby State Park, Highway 13 And County C
24, Thomasville, Joy Springs County Park, Littleport, Saint Sebald,
and Osborne.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4279 9161 4281 9124 4264 9125 4265 9161
TIME...MOT...LOC 1237Z 267DEG 31KT 4290 9153 4264 9142
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Skow
Action: Continued Issued At: 2026-08-11 07:50:10 292 WWUS53 KARX 111249 SVSARX Severe Weather Statement National Weather Service La Crosse WI 749 AM CDT Tue Aug 11 2026 IAC043-111315- /O.CON.KARX.SV.W.0170.000000T0000Z-260811T1315Z/ Clayton IA- 749 AM CDT Tue Aug 11 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR SOUTHERN CLAYTON COUNTY... At 749 AM CDT, a severe thunderstorm was located near Colesburg, or 12 miles southwest of Guttenberg, moving east at 40 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Edgewood, Camp C.S. Klaus, Wood, and Bixby State Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4270 9143 4273 9124 4264 9125 4265 9143 TIME...MOT...LOC 1249Z 272DEG 34KT 4268 9129 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Skow Action: Cancelled Issued At: 2026-08-11 07:57:41 427 WWUS53 KARX 111257 SVSARX Severe Weather Statement National Weather Service La Crosse WI 757 AM CDT Tue Aug 11 2026 IAC043-111307- /O.CAN.KARX.SV.W.0170.000000T0000Z-260811T1315Z/ Clayton IA- 757 AM CDT Tue Aug 11 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CLAYTON COUNTY IS CANCELLED... The storm which prompted the warning has moved out of the area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 200 PM CDT for northeastern Iowa. && LAT...LON 4270 9143 4273 9124 4264 9125 4265 9143 TIME...MOT...LOC 1256Z 267DEG 31KT 4268 9119 $$ Skow | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||