Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 32, NWS Green Bay, WI

May 16, 20256 counties in Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at May 16, 2025, 6:01 PM CDT for 6 counties in Wisconsin. It was in force for 44 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: May 16, 2025, 6:01 PM CDT (23:01 UTC)
Expired: May 16, 2025, 6:45 PM CDT
In force: 44 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Brown County, WI, Door County, WI, Kewaunee County, WI, Manitowoc County, WI, Marinette County, WI, Oconto County, WI

The radar

The Green Bay radar (KGRB), 34 km from the middle of the area, began a volume at 23:05 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.0 hours before the alert went out and 35 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: 1761 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 303 m²/s²
0-3 km storm-relative helicity: 325 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 May 16, 3:55 PM CDT, 2 hours 6 minutes earlier.

Area forecast discussion, May 16, 3:55 PM CDT, 2 hours 6 minutes before

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Hazardous weather outlook, May 16, 3:00 PM CDT, 3 hours 1 minute before

Hazardous Weather Outlook
National Weather Service Green Bay WI
300 PM CDT Fri May 16 2025

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-172000-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
300 PM CDT Fri May 16 2025

This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.

.DAY ONE...Tonight

Gusty southwest winds of 40 to locally 45 mph are expected across
central and east-central Wisconsin through early this evening.
Elsewhere, expect gusts of 35 to 40 mph.

Scattered afternoon thunderstorms will be capable of producing
damaging wind gusts and hail up to 1 inch in diameter. Isolated
severe storms are possible through early this evening.

.DAYS TWO THROUGH SEVEN...Saturday through Friday

Thunderstorms may return Tuesday into Wednesday next week.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to report any wind gusts greater than 40
mph, wind damage, or hail to the National Weather Service in Green
Bay.

LMZ521-522-541>543-172000-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
300 PM CDT Fri May 16 2025

This Hazardous Weather Outlook is for portions of northwest Lake
Michigan and the waters of Green Bay.

.DAY ONE...Tonight

Conditions will be hazardous to small craft due to strong and
gusty winds and high waves.

.DAYS TWO THROUGH SEVEN...Saturday through Friday

Conditions will be hazardous to small craft through Saturday
evening due to strong winds and high waves.

KLJ

In the hours before

Special weather statement, May 16, 4:30 PM CDT, 1 hour 31 minutes before

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Local storm report, May 16, 5:24 PM CDT, 37 minutes before

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Local storm report, May 16, 5:35 PM CDT, 26 minutes before

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Local storm report, May 16, 5:51 PM CDT, 10 minutes before

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Local storm report, May 16, 5:57 PM CDT, 4 minutes before

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Local storm report, May 16, 6:00 PM CDT, 1 minute 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
May 15, 7:01 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Shawano, Waupaca	44 min
May 15, 7:04 PM CDT	Tornado Warning	GRB	Langlade, Lincoln	26 min
May 15, 7:14 PM CDT	Special Marine Warning	GRB		99 min
May 15, 7:32 PM CDT	Severe Thunderstorm Warning	GRB	Langlade	16 min
May 15, 11:11 PM CDT	Small Craft Advisory	GRB		49 hr
May 16, 2:01 PM CDT	Special Weather Statement	GRB	Menominee	29 min
May 16, 2:07 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Menominee, Oconto, Shawano	53 min
May 16, 2:10 PM CDT	Severe Thunderstorm Warning	GRB	Kewaunee	21 min
May 16, 2:29 PM CDT	Special Weather Statement	GRB	Kewaunee	31 min
May 16, 2:33 PM CDT	Special Weather Statement	GRB	Menominee, Oconto, Shawano, Waupaca	27 min
May 16, 2:41 PM CDT	Severe Thunderstorm Warning	GRB	Forest, Langlade, Marinette, Oconto	49 min
May 16, 2:59 PM CDT	Special Weather Statement	GRB	Marinette	31 min
May 16, 3:07 PM CDT	Special Weather Statement	GRB	Menominee, Oconto, Shawano	38 min
May 16, 3:19 PM CDT	Severe Thunderstorm Warning	GRB	Manitowoc	41 min
May 16, 3:49 PM CDT	Special Weather Statement	GRB	Kewaunee	26 min
May 16, 4:30 PM CDT	Special Weather Statement	GRB	Calumet	45 min
May 16, 4:40 PM CDT	Severe Thunderstorm Warning	GRB	Manitowoc	39 min
May 16, 4:47 PM CDT	Special Marine Warning	GRB		31 min
May 16, 4:54 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Manitowoc	36 min
May 16, 5:02 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Outagamie, Waupaca, Waushara, Winnebago	43 min
May 16, 5:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	GRB	Brown, Calumet, Manitowoc, Oconto, Outagamie, Shawano and 2 more	48 min
May 16, 5:42 PM CDT	Special Marine Warning	GRB		48 min
May 16, 6:32 PM CDT	Special Marine Warning	GRB		46 min
May 16, 6:42 PM CDT	Special Weather Statement	GRB	Door	33 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.