Alert archive / Wisconsin / Special Weather Statements in 2025

Special Weather Statement, NWS Green Bay, WI

June 20, 2025Portage County, Wood County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jun 20, 2025, 2:28 AM CDT for Portage County, Wood County, Wisconsin. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 20, 2025, 2:28 AM CDT (07:28 UTC)
Expired
Jun 20, 2025, 3:15 AM CDT
In force
47 min
Issued by
NWS Green Bay, WI
Hail
0.75 in
Wind
40

Counties Portage County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 136 km from the middle of the area, began a volume at 07:30 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 00:00Z, 7.5 hours before the alert went out and 138 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 2025-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 537 joules per kilogram.LCLEL10008507005003002001001 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 2025-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
537 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1857 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 19, 10:31 PM CDT, 3 hours 57 minutes earlier.

Area forecast discussion, Jun 19, 10:31 PM CDT, 3 hours 57 minutes before
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Hazardous weather outlook, Jun 19, 1:59 PM CDT, 12 hours 29 minutes before
Hazardous Weather Outlook
National Weather Service Green Bay WI
159 PM CDT Thu Jun 19 2025

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-201900-
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-
159 PM CDT Thu Jun 19 2025

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

.DAY ONE...Tonight

There is a chance of thunderstorms through late tonight. An
isolated severe storm is possible through 10 pm with large hail
and damaging winds.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Thunderstorms will be possible at times from Friday morning
through Saturday morning. The greatest risk of strong or severe
storms will be overnight Friday night into Saturday morning as a
thunderstorm complex is expected move across the area. There is
also the potential for torrential rainfall with the stronger
storms. Thunderstorms are also possible early to mid next week,
however it is too early to determine if storms would become
severe.

A multi-day period of dangerous heat are forecast from Saturday
through Monday. Heat index values are expected to reach 95
degrees to 105 degrees each afternoon. Low temperatures in the mid
to upper 70s will provide minimal relief to the heat and
humidity.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon, and again at
times on Friday into Saturday morning.

LMZ521-522-541>543-201900-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
159 PM CDT Thu Jun 19 2025

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

.DAY ONE...Tonight

Thunderstorms are possible at times this afternoon and tonight
that would pose a hazard to mariners.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Thunderstorms will be possible at times Friday through Saturday
morning, and then again early next week. Any thunderstorms that
form would pose a hazard to mariners. It is possible that the
storms late Friday night into Saturday morning could bring
a significant risk of very strong winds.

Increasing southerly winds and building waves could create
hazardous conditions for small craft from late Friday night
through the weekend. Dense marine fog may be possible at times
Friday into early next week, especially on Lake Michigan.

MPC/Uhlmann

In the hours before

Local storm report, Jun 19, 9:26 PM CDT, 5 hours 2 minutes before
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Local storm report, Jun 19, 9:50 PM CDT, 4 hours 38 minutes before
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Special weather statement, Jun 19, 10:58 PM CDT, 3 hours 30 minutes before
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Special weather statement, Jun 19, 11:51 PM CDT, 2 hours 37 minutes before
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Special weather statement, Jun 20, 1:47 AM CDT, 41 minutes before
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Special weather statement, Jun 20, 2:28 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 7:11 PM CDTSpecial Weather StatementGRBBrown34 min
Jun 19, 7:30 PM CDTSevere Thunderstorm WarningGRBBrown, Manitowoc34 min
Jun 19, 8:24 PM CDTSpecial Weather StatementGRBCalumet21 min
Jun 19, 10:58 PM CDTSpecial Weather StatementGRBWood47 min
Jun 19, 11:51 PM CDTSpecial Weather StatementGRBWood39 min
Jun 20, 1:47 AM CDTSpecial Weather StatementGRBWood43 min
Jun 20, 2:56 AM CDTHeat AdvisoryGRBBrown, Calumet, Door, Florence, Forest, Kewaunee and 16 more4 days
Jun 20, 3:06 AM CDTSpecial Weather StatementGRBMarathon39 min
Jun 20, 5:02 AM CDTSmall Craft AdvisoryGRB4 days
Jun 20, 5:03 AM CDTBeach Hazards StatementGRBDoor, Kewaunee, Manitowoc4 days

Nearby

Special Weather Statements in Wisconsin, 2025Every special weather statement 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.