Alert archive / Wisconsin / River Flood Warnings in 2026

River Flood Warning 8, NWS Green Bay, WI

April 4, 2026Brown County, Wisconsin

NWS Green Bay, WI issued this river flood warning at Apr 4, 2026, 11:40 AM CDT for Brown County, Wisconsin. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Apr 4, 2026, 11:40 AM CDT (16:40 UTC)
Expired: Apr 4, 2026, 9:01 PM CDT
In force: 9 hr
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Flood severity: Minor

County Brown County, WI

The radar

The Green Bay radar (KGRB), 10 km from the middle of the area, began a volume at 16:42 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 river

Written for the forecast point East River (WI) above Greenleaf (GGGW3). The gauge peaked at 13.26 ft at Apr 4, 2026, 3:00 PM CDT.

Action stage: 9 ft
Minor stage: 13 ft
Moderate stage: 16 ft
Major stage: 18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 04085108, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Apr 4, 7:19 AM CDT, 4 hours 21 minutes earlier.

Area forecast discussion, Apr 4, 7:19 AM CDT, 4 hours 21 minutes before

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Hazardous weather outlook, Apr 4, 3:38 AM CDT, 8 hours 2 minutes before

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In the hours before

Local storm report, Apr 4, 9:11 AM CDT, 2 hours 29 minutes before

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Local storm report, Apr 4, 9:33 AM CDT, 2 hours 7 minutes before

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Local storm report, Apr 4, 9:38 AM CDT, 2 hours 2 minutes before

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Local storm report, Apr 4, 9:46 AM CDT, 1 hour 54 minutes before

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Local storm report, Apr 4, 10:25 AM CDT, 1 hour 15 minutes before

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Local storm report, Apr 4, 10:52 AM CDT, 48 minutes before

Preliminary Local Storm Report
National Weather Service Green Bay WI
1052 AM CDT Sat Apr 4 2026

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

1030 AM     Freezing Rain    1 S Rhinelander         45.62N 89.41W
04/04/2026  M0.13 Inch       Oneida             WI   Broadcast Media

            At WJFW-TV. Also had 1.0 inch of sleet.

&&

JLA

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 3:57 AM CDT	Small Craft Advisory	GRB		33 hr
Apr 4, 10:29 AM CDT	River Flood Warning	GRB	Shawano, Waupaca	58 hr
Apr 4, 10:32 AM CDT	River Flood Warning	GRB	Waupaca	58 hr
Apr 4, 10:36 AM CDT	River Flood Warning	GRB	Outagamie, Waupaca, Winnebago	25 days
Apr 4, 3:43 PM CDT	River Flood Warning	GRB	Wood	36 hr

Nearby

River Flood Warnings in Wisconsin, 2026 Every river flood warning 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.