Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 55, NWS Green Bay, WI

June 23, 2025Brown County, Outagamie County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jun 23, 2025, 3:25 PM CDT for Brown County, Outagamie County, Wisconsin. It was in force for 35 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: Jun 23, 2025, 3:25 PM CDT (20:25 UTC)
Expired: Jun 23, 2025, 4:00 PM CDT
In force: 35 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Brown County, WI, Outagamie County, WI

The radar

The Green Bay radar (KGRB), 11 km from the middle of the area, began a volume at 20:25 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jun 23, 1:15 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.4 hours before the alert went out and 11 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: 305 J/kg
Mixed-layer CIN: -295 J/kg
Mixed-layer LCL: 1304 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 188 m²/s²
0-3 km storm-relative helicity: 290 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Green Bay, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 23, 2:23 PM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, Jun 23, 2:23 PM CDT, 1 hour 2 minutes before

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Hazardous weather outlook, Jun 23, 2:28 PM CDT, 57 minutes before

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In the hours before

Local storm report, Jun 23, 2:01 PM CDT, 1 hour 24 minutes before

Preliminary Local Storm Report
National Weather Service Green Bay WI
201 PM CDT Mon Jun 23 2025

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

0151 PM     Tstm Wnd Gst     2 NE Port Edwards       44.36N 89.84W
06/23/2025  E69 MPH          Wood               WI   ASOS

            Gust to 69 mph at ISW ASOS.

&&

Local storm report, Jun 23, 2:36 PM CDT, 49 minutes before

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Local storm report, Jun 23, 2:40 PM CDT, 45 minutes before

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Local storm report, Jun 23, 2:55 PM CDT, 30 minutes before

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Local storm report, Jun 23, 2:59 PM CDT, 26 minutes before

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Local storm report, Jun 23, 3:16 PM CDT, 9 minutes before

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The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 1:23 PM CDT	Special Weather Statement	GRB	Portage, Wood	37 min
Jun 23, 1:41 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Wood	49 min
Jun 23, 2:12 PM CDT	Severe Thunderstorm Warning Considerable damage threat	GRB	Portage, Waupaca	48 min
Jun 23, 2:14 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	46 min
Jun 23, 2:47 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Outagamie, Shawano, Waupaca, Waushara, Winnebago	43 min
Jun 23, 3:26 PM CDT	Special Marine Warning	GRB		49 min
Jun 23, 3:52 PM CDT	Special Weather Statement	GRB	Kewaunee	23 min
Jun 23, 5:16 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	44 min
Jun 23, 5:57 PM CDT	Severe Thunderstorm Warning	GRB	Waushara, Winnebago	48 min
Jun 23, 6:32 PM CDT	Severe Thunderstorm Warning	GRB	Winnebago	28 min
Jun 23, 6:35 PM CDT	Severe Thunderstorm Warning	GRB	Winnebago	18 min

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.