Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 116, NWS La Crosse, WI

August 15, 2025La Crosse County, Vernon County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Aug 15, 2025, 7:27 PM CDT for La Crosse County, Vernon County, Wisconsin. It was in force for 21 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: Aug 15, 2025, 7:27 PM CDT (00:27 UTC)
Expired: Aug 15, 2025, 7:48 PM CDT
In force: 21 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties La Crosse County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 19 km from the middle of the area, began a volume at 00:25 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 242 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: 3317 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 702 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 10.5

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 Aug 15, 6:57 PM CDT, 30 minutes earlier.

Area forecast discussion, Aug 15, 6:57 PM CDT, 30 minutes before

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Hazardous weather outlook, Aug 15, 4:18 PM CDT, 3 hours 9 minutes before

Hazardous Weather Outlook
National Weather Service La Crosse WI
418 PM CDT Fri Aug 15 2025

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-161100-
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-
418 PM CDT Fri Aug 15 2025

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

.DAY ONE...Tonight

Scattered storms will track across the area into the evening. A
few could be severe with a large hail and damaging wind threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Periods of showers and storms continue this weekend into Monday
with the threat for heavy rainfall and localized flash flooding.
Strong to severe storms cannot be ruled out during this period.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation is not anticipated.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

nofwd

In the hours before

Special weather statement, Aug 15, 3:42 PM CDT, 3 hours 45 minutes before

Special Weather Statement
National Weather Service La Crosse WI
342 PM CDT Fri Aug 15 2025

IAZ029-152130-
Fayette IA-
342 PM CDT Fri Aug 15 2025

...STRONG THUNDERSTORMS WILL IMPACT FAYETTE COUNTY THROUGH 430 PM
CDT...

At 342 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Fredericksburg to Sumner to near Denver.
Movement was east at 45 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Strong thunderstorms will be near...
  Hawkeye around 350 PM CDT.
  Oelwein, Fayette, and Maynard around 355 PM CDT.
  West Union around 400 PM CDT.
  Elgin and Arlington around 410 PM CDT.

Other locations impacted by these storms include Highway 93 And
County W 14, Donnan, Highway 93 And County V 68, Volga River State
Park, Wadena, Richfield, Brainard, Randalia, Highways 3 And 187, and
County Road W 45 And 187.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
northeastern Iowa.

&&

LAT...LON 4264 9208 4298 9208 4298 9160 4265 9161
TIME...MOT...LOC 2042Z 271DEG 39KT 4298 9215 4283 9211 4267 9222

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Rieck

Special weather statement, Aug 15, 7:06 PM CDT, 21 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
Aug 15, 7:06 PM CDT	Special Weather Statement	ARX	La Crosse, Vernon	54 min
Aug 15, 8:19 PM CDT	Special Weather Statement	ARX	Adams	56 min
Aug 16, 8:43 AM CDT	Special Weather Statement	ARX	Buffalo, Clark, Jackson, Taylor, Trempealeau	62 min
Aug 16, 2:08 PM CDT	Special Weather Statement	ARX	Adams	52 min
Aug 16, 2:19 PM CDT	Severe Thunderstorm Warning	ARX	Juneau, Monroe	41 min
Aug 16, 2:55 PM CDT	Severe Thunderstorm Warning	ARX	Adams, Juneau	37 min
Aug 16, 12:31 AM CDT	Special Weather Statement	ARX	Howard, Winneshiek	44 min
Aug 16, 1:03 AM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Fayette, Winneshiek	42 min
Aug 16, 3:07 AM CDT	Heat Advisory	ARX	Chickasaw, Clayton, Fayette, Floyd, Mitchell	17 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2025 Every severe thunderstorm warning in 2025

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.