Alert archive / Wisconsin / Special Weather Statements in 2025

Special Weather Statement, NWS Green Bay, WI

August 12, 2025Manitowoc County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Aug 12, 2025, 6:21 PM CDT for Manitowoc County, Wisconsin. It was in force for 54 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: Aug 12, 2025, 6:21 PM CDT (23:21 UTC)
Expired: Aug 12, 2025, 7:15 PM CDT
In force: 54 min
Issued by: NWS Green Bay, WI
Hail: 0.25 in
Wind: 40

County Manitowoc County, WI

The radar

The Green Bay radar (KGRB), 35 km from the middle of the area, began a volume at 23:24 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

Detroit, MI (KDTX), launched 12:00Z, 11.4 hours before the alert went out and 391 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: 151 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1284 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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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
Aug 12, 2:59 PM CDT	Special Weather Statement	GRB	Vilas	46 min
Aug 12, 4:27 PM CDT	Special Weather Statement	GRB	Shawano	48 min
Aug 12, 5:13 PM CDT	Special Weather Statement	GRB	Brown, Outagamie	47 min
Aug 12, 5:55 PM CDT	Special Weather Statement	GRB	Brown	50 min
Aug 12, 6:39 PM CDT	Special Marine Warning	GRB		66 min

Nearby

Special Weather Statements in Wisconsin, 2025 Every 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.