Alert archive / Minnesota / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 193, NWS La Crosse, WI

September 2, 2026Buffalo County, Trempealeau County, Wisconsin; 4 counties in Minnesota

NWS La Crosse, WI issued this severe thunderstorm warning at Sep 2, 2026, 1:47 AM CDT for Buffalo County, Trempealeau County, Wisconsin; 4 counties in Minnesota. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 2, 2026, 1:47 AM CDT (06:47 UTC)
Expired: Sep 2, 2026, 2:45 AM CDT
In force: 58 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

Counties Fillmore County, MN, Houston County, MN, Wabasha County, MN, Winona County, MN, Buffalo County, WI, Trempealeau County, WI

The radar

The La Crosse radar (KARX), 54 km from the middle of the area, began a volume at 06:47 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 2, 12:45 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 6.8 hours before the alert went out and 169 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1902 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS La Crosse, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 2, 1:45 AM CDT, 2 minutes earlier.

Area forecast discussion, Sep 2, 1:45 AM CDT, 2 minutes before

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Hazardous weather outlook, Sep 1, 1:39 PM CDT, 12 hours 8 minutes before

Hazardous Weather Outlook
National Weather Service La Crosse WI
139 PM CDT Tue Sep 1 2026

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-022245-
Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-
Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston-
Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau-
Adams-Vernon-Crawford-Richland-Grant-
139 PM CDT Tue Sep 1 2026

This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and southwest into central Wisconsin.

.DAY ONE...This Afternoon and Tonight

A strong to severe thunderstorm complex moves through the area
late tonight into Wednesday morning, mainly along and north of
Interstate 90. The primary hazard is damaging winds.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Strong thunderstorms are possible Wednesday night through
Thursday morning. The primary hazard is damaging winds.

.SPOTTER INFORMATION STATEMENT...

No action needed.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

In the hours before

Special weather statement, Sep 1, 10:19 PM CDT, 3 hours 28 minutes before

Special Weather Statement
National Weather Service La Crosse WI
1019 PM CDT Tue Sep 1 2026

MNZ088-095-020400-
Fillmore MN-Winona MN-
1019 PM CDT Tue Sep 1 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN WINONA AND
NORTHEASTERN FILLMORE COUNTIES THROUGH 1100 PM CDT...

At 1019 PM CDT, Doppler radar was tracking a strong thunderstorm near
Fountain, or near Preston, moving northeast at 25 mph.

HAZARD...Wind gusts up to 50 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

This storm will remain over mainly rural areas of southwestern Winona
and northeastern Fillmore Counties, including the following
locations... Saratoga, Arendahl, County Roads 6 And 33, Whalan, Pilot
Mound, Old Barn Campground, Isinours, Peterson, Fremont, and Troy.

This includes Interstate 90 in Minnesota between mile markers 234 and
239.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4385 9210 4385 9208 4389 9208 4397 9204
      4386 9173 4364 9197 4372 9217
TIME...MOT...LOC 0319Z 212DEG 20KT 4376 9206

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

Naylor

Special weather statement, Sep 1, 10:45 PM CDT, 3 hours 2 minutes before

Special Weather Statement
National Weather Service La Crosse WI
1045 PM CDT Tue Sep 1 2026

MNZ088-020430-
Winona MN-
1045 PM CDT Tue Sep 1 2026

...A STRONG THUNDERSTORM WILL IMPACT WESTERN WINONA COUNTY THROUGH
1130 PM CDT...

At 1045 PM CDT, Doppler radar was tracking a strong thunderstorm near
Lewiston, or 11 miles southwest of Winona, moving northeast at 30
mph.

HAZARD...Wind gusts up to 50 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  Winona and Stockton around 1055 PM CDT.
  Goodview around 1100 PM CDT.
  Fountain City around 1105 PM CDT.

Other locations impacted by this storm include Witoka, Wyattville,
Wilson, Hart, Minnesota City, Pickwick, Fremont, and Rushford
Village.

This includes Interstate 90 in Minnesota between mile markers 241 and
258.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4414 9176 4412 9171 4410 9171 4410 9168
      4407 9166 4405 9161 4403 9159 4402 9151
      4401 9149 4384 9168 4385 9198
TIME...MOT...LOC 0345Z 216DEG 26KT 4391 9181

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

Naylor

Special weather statement, Sep 1, 11:25 PM CDT, 2 hours 22 minutes before

Special Weather Statement
National Weather Service La Crosse WI
1125 PM CDT Tue Sep 1 2026

WIZ034-041-042-020515-
Jackson WI-La Crosse WI-Monroe WI-
1125 PM CDT Tue Sep 1 2026

...STRONG THUNDERSTORMS WILL IMPACT LA CROSSE...SOUTHWESTERN JACKSON
AND NORTHWESTERN MONROE COUNTIES THROUGH 1215 AM CDT...

At 1124 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Holmen to near Bangor. Movement was northeast
at 35 mph.

HAZARD...Wind gusts up to 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Strong thunderstorms will be near...
  Sparta and Holmen around 1130 PM CDT.
  Fort Mc Coy around 1145 PM CDT.
  Cataract around 1150 PM CDT.

Other locations impacted by these storms include Melrose,
Stevenstown, Rockland, County Roads D E And E, Severson Coulee,
Mindoro, Four Corners, Nathan Hill, Veterans Memorial Park, and
Midway.

This includes the following highways...
 Interstate 94 between mile markers 139 and 141.
 Interstate 90 in Wisconsin between mile markers 2 and 33.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4408 9046 4382 9084 4386 9127 4389 9132
      4393 9134 4396 9139 4399 9132 4400 9133
      4406 9125 4405 9122 4409 9120 4409 9117
      4408 9115 4413 9115 4416 9110
TIME...MOT...LOC 0424Z 241DEG 29KT 4396 9128 4389 9089

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

Naylor

Special weather statement, Sep 1, 11:51 PM CDT, 1 hour 56 minutes before

Special Weather Statement
National Weather Service La Crosse WI
1151 PM CDT Tue Sep 1 2026

MNZ088-WIZ032-020515-
Winona MN-Buffalo WI-
1151 PM CDT Tue Sep 1 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN WINONA AND
SOUTHEASTERN BUFFALO COUNTIES THROUGH 1215 AM CDT...

At 1151 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles south of Winona, moving east at 20 mph.

HAZARD...Wind gusts up to 40 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  Winona around 1155 PM CDT.

Other locations impacted by this storm include Wilson, Witoka,
Marshland, Ridgeway, and Pickwick.

This includes Interstate 90 in Minnesota between mile markers 248 and
266.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4410 9155 4408 9154 4404 9157 4403 9156
      4402 9156 4402 9151 4397 9142 4391 9145
      4390 9178 4398 9178
TIME...MOT...LOC 0451Z 256DEG 19KT 4395 9165

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

Naylor

Local storm report, Sep 2, 12:28 AM CDT, 1 hour 19 minutes before

Preliminary Local Storm Report
National Weather Service La Crosse WI
1228 AM CDT Wed Sep 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1210 AM     Hail             6 ENE Pickwick          44.01N 91.49W
09/02/2026  M1.50 Inch       Winona             MN   Fire Dept/Rescue

            Multiple reports of 1 to 1.5 inch hail
            sizes. Time estimated from radar.

&&

Local storm report, Sep 2, 1:37 AM CDT, 10 minutes before

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The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 1, 11:25 PM CDT	Special Weather Statement	ARX	La Crosse	50 min
Sep 2, 12:10 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ARX	La Crosse, Trempealeau	22 min
Sep 2, 1:18 AM CDT	Severe Thunderstorm Warning	ARX	Adams	27 min
Sep 2, 2:25 AM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Jackson, La Crosse, Monroe, Trempealeau	50 min
Sep 2, 3:07 AM CDT	Special Weather Statement	ARX	Jackson	38 min
Sep 2, 3:37 AM CDT	Special Weather Statement	ARX	Adams	38 min
Sep 1, 10:19 PM CDT	Special Weather Statement	ARX	Fillmore	41 min
Sep 1, 10:45 PM CDT	Special Weather Statement	ARX	Winona	45 min
Sep 1, 11:51 PM CDT	Special Weather Statement	ARX	Winona	24 min
Sep 1, 11:56 PM CDT	Severe Thunderstorm Warning	ARX	Winona	34 min
Sep 2, 12:47 AM CDT	Severe Thunderstorm Warning	ARX	Dodge	58 min
Sep 2, 1:17 AM CDT	Severe Thunderstorm Warning	ARX	Dodge, Fillmore, Mower, Olmsted, Wabasha	58 min
Sep 2, 4:18 AM CDT	Severe Thunderstorm Warning	ARX	Mower	26 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2026 Severe Thunderstorm Warnings in Wisconsin, 2026 Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.