Alert archive / Wisconsin / Tornado Watches in 2025

Tornado Watch 185

April 28, 2025Allamakee County, Winneshiek County, Iowa; Houston County, Minnesota; 22 counties in Wisconsin

The Storm Prediction Center issued this tornado watch at Apr 28, 2025, 7:34 PM CDT for Allamakee County, Winneshiek County, Iowa; Houston County, Minnesota; 22 counties in Wisconsin. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 28, 2025, 7:34 PM CDT (00:34 UTC)
Expired
Apr 29, 2025, 12:32 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
65 kt
All 25 counties

Allamakee County, IA, Winneshiek County, IA, Houston County, MN, Adams County, WI, Clark County, WI, Crawford County, WI, Forest County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Portage County, WI, Richland County, WI, Shawano County, WI, Taylor County, WI, Vernon County, WI, Waupaca County, WI, Waushara County, WI, Wood County, WI

The radar

The Green Bay radar (KGRB), 136 km from the middle of the area, began a volume at 00:36 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
60%
One or more EF2 to EF5 tornadoes
40%
Ten or more severe wind reports
70%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
60%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 28, 8:03 PM CDTSevere Thunderstorm WarningARXClark57 min
Apr 28, 8:05 PM CDTTornado WarningARXClark40 min
Apr 28, 8:26 PM CDTTornado WarningARXClark34 min
Apr 28, 8:41 PM CDTSevere Thunderstorm WarningGRBMarathon, Wood64 min
Apr 28, 8:49 PM CDTTornado WarningGRBMarathon, Wood41 min
Apr 28, 9:33 PM CDTSevere Thunderstorm WarningGRBLanglade, Lincoln, Marathon, Portage, Shawano, Wood40 min
Apr 28, 9:59 PM CDTSevere Thunderstorm WarningGRBForest, Langlade, Menominee, Oconto, Oneida, Shawano46 min
Apr 28, 10:06 PM CDTTornado WarningGRBLanglade, Menominee, Oconto, Shawano39 min
Apr 28, 10:27 PM CDTSevere Thunderstorm WarningGRBFlorence, Forest, Marinette, Oconto63 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.6 hours before the alert went out and 137 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 00:00Z on 2025-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 178 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2025-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 468 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
178 J/kg
Mixed-layer CIN
-455 J/kg
Mixed-layer LCL
1475 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
468 m²/s²
0-3 km storm-relative helicity
694 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 28, 10:35 PM CDTMesoscale DiscussionSPCDoor, Langlade, Marinette, Menominee, Oconto, Shawano and 1 more85 min

Nearby

Tornado Watches in Wisconsin, 2025Tornado Watches in Iowa, 2025Tornado Watches in Minnesota, 2025Every tornado watch 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.