Alert archive / Wisconsin / Special Weather Statements in 2026

Special Weather Statement, NWS Green Bay, WI

August 18, 2026Marinette County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Aug 18, 2026, 3:03 PM CDT for Marinette County, Wisconsin. It was in force for 27 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 18, 2026, 3:03 PM CDT (20:03 UTC)
Expired: Aug 18, 2026, 3:30 PM CDT
In force: 27 min
Issued by: NWS Green Bay, WI
Hail: 0.75 in
Wind: 40

County Marinette County, WI

The radar

The Green Bay radar (KGRB), 93 km from the middle of the area, began a volume at 20:06 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.1 hours before the alert went out and 427 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: 1301 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 956 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

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 18, 2:44 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	33 min
Aug 18, 2:45 PM CDT	Special Marine Warning	GRB		101 min
Aug 18, 3:22 PM CDT	Special Weather Statement	GRB	Portage	38 min
Aug 18, 3:34 PM CDT	Special Weather Statement	GRB	Marinette	26 min
Aug 18, 3:50 PM CDT	Special Weather Statement	GRB	Door	25 min
Aug 18, 3:55 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	49 min
Aug 18, 4:11 PM CDT	Tornado Warning	GRB	Waushara	30 min
Aug 18, 4:28 PM CDT	Special Weather Statement	GRB	Door	47 min
Aug 18, 5:04 PM CDT	Special Marine Warning	GRB		56 min
Aug 18, 5:07 PM CDT	Special Marine Warning	GRB		83 min

Nearby

Special Weather Statements in Wisconsin, 2026 Every special weather statement in 2026

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.