Alert archive / Wisconsin / River Flood Warnings in 2026

River Flood Warning 27, NWS Green Bay, WI

April 14, 2026Brown County, Wisconsin

NWS Green Bay, WI issued this river flood warning at Apr 14, 2026, 2:40 AM CDT for Brown County, Wisconsin. It was in force for 21 days.

The area

The counties it named.

The facts

Issued: Apr 14, 2026, 2:40 AM CDT (07:40 UTC)
Expired: May 5, 2026, 2:40 AM CDT
In force: 21 days
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 07:39 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).

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 14, 12:34 AM CDT, 2 hours 6 minutes earlier.

Area forecast discussion, Apr 14, 12:34 AM CDT, 2 hours 6 minutes before

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Hazardous weather outlook, Apr 13, 2:51 PM CDT, 11 hours 49 minutes before

Hazardous Weather Outlook
National Weather Service Green Bay WI
251 PM CDT Mon Apr 13 2026

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-142000-
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-
251 PM CDT Mon Apr 13 2026

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

.DAY ONE...Tonight

Elevated water levels or flooding continue along some rivers.

Severe storms, including heavy rainfall, large to very large hail,
damaging winds and tornado or two are possible late this afternoon
into tonight. The highest risk of severe storms is across central
into east- central Wisconsin.

Additional flooding may occur for areas that receive heavy
rainfall tonight.

.DAYS TWO THROUGH SEVEN...Tuesday through Monday

There is a chance of severe thunderstorms south of a line from
Wisconsin Rapids to Sturgeon bay during the late afternoon and
evening on Tuesday. Large hail and strong winds will be the
primary threats.

Additional thunderstorms are possible Wednesday afternoon into
Wednesday night, and again Friday night into Saturday.

Elevated water levels and at least minor flooding will continue
along many rivers through the week. Runoff from the Upper
Peninsula will likely result in moderate to possibly major flooding
on the Menominee River during the mid to late part of the week.

.SPOTTER INFORMATION STATEMENT...

Spotters should report severe weather and flooding to the
National Weather Service in Green Bay.

LMZ521-522-541>543-142000-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
251 PM CDT Mon Apr 13 2026

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

.DAY ONE...Tonight

Thunderstorms, some possibly strong to severe, are expected
tonight.

Areas of fog are possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Monday

Thunderstorms will be possible at times Tuesday through Wednesday
night, and again Friday night into Saturday. Severe storms will
be possible Tuesday evening.

In the hours before

Local storm report, Apr 14, 12:19 AM CDT, 2 hours 21 minutes before

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Local storm report, Apr 14, 12:20 AM CDT, 2 hours 20 minutes before

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Local storm report, Apr 14, 12:21 AM CDT, 2 hours 19 minutes before

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Local storm report, Apr 14, 12:22 AM CDT, 2 hours 18 minutes before

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Local storm report, Apr 14, 12:24 AM CDT, 2 hours 16 minutes before

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Local storm report, Apr 14, 12:45 AM CDT, 1 hour 55 minutes 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
Apr 13, 7:02 PM CDT	Areal Flood Advisory	GRB	Outagamie, Shawano, Waupaca	3 hr
Apr 13, 7:19 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Marathon	14 min
Apr 13, 7:22 PM CDT	Severe Thunderstorm Warning Considerable damage threat	GRB	Outagamie, Shawano, Waupaca	38 min
Apr 13, 7:30 PM CDT	Special Weather Statement	GRB	Brown	30 min
Apr 13, 7:31 PM CDT	Special Marine Warning	GRB		89 min
Apr 13, 7:36 PM CDT	Special Weather Statement	GRB	Waupaca	24 min
Apr 13, 7:39 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Kewaunee	51 min
Apr 13, 7:41 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Shawano, Waupaca	49 min
Apr 13, 7:57 PM CDT	Special Marine Warning	GRB		2 hr
Apr 13, 7:58 PM CDT	Severe Thunderstorm Warning	GRB	Wood	47 min
Apr 13, 8:06 PM CDT	Flash Flood Warning Considerable damage threat	GRB	Marathon, Outagamie, Portage, Shawano, Waupaca	8 hr
Apr 13, 8:22 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Kewaunee, Manitowoc	42 min
Apr 13, 8:36 PM CDT	Areal Flood Advisory	GRB	Brown, Oconto, Outagamie	3 hr
Apr 13, 8:36 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Wood	35 min
Apr 13, 9:10 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waushara, Wood	50 min
Apr 13, 9:26 PM CDT	Special Weather Statement	GRB	Brown	34 min
Apr 13, 9:30 PM CDT	River Flood Warning	GRB	Waupaca	5 days
Apr 13, 9:32 PM CDT	River Flood Warning	GRB	Wood	63 hr
Apr 13, 9:56 PM CDT	Special Weather Statement	GRB	Waupaca	34 min
Apr 13, 10:01 PM CDT	Flash Flood Warning	GRB	Brown, Door, Kewaunee, Oconto, Outagamie	6 hr
Apr 13, 10:16 PM CDT	River Flood Warning	GRB	Wood	70 hr
Apr 13, 10:21 PM CDT	Areal Flood Advisory	GRB	Brown, Calumet, Kewaunee, Manitowoc, Outagamie, Portage and 4 more	6 hr
Apr 13, 10:35 PM CDT	Special Weather Statement	GRB	Brown, Calumet, Outagamie, Winnebago	55 min
Apr 13, 10:54 PM CDT	Flash Flood Warning	GRB	Brown, Calumet, Kewaunee, Manitowoc, Outagamie, Winnebago	5 hr
Apr 13, 11:27 PM CDT	Special Weather Statement	GRB	Calumet, Manitowoc	33 min
Apr 14, 2:14 AM CDT	Flash Flood Watch	GRB	Waupaca	3 hr
Apr 14, 3:52 AM CDT	Areal Flood Advisory	GRB	Brown, Calumet, Door, Kewaunee, Manitowoc, Marathon and 6 more	6 hr
Apr 14, 4:57 AM CDT	River Flood Warning	GRB	Marinette	6 days
Apr 14, 6:02 AM CDT	Areal Flood Warning	GRB	Outagamie, Shawano, Waupaca	5 hr
Apr 14, 8:46 AM CDT	Flash Flood Watch	GRB	Shawano, Waupaca	25 hr
Apr 14, 9:07 AM CDT	River Flood Warning	GRB	Wood	21 days
Apr 14, 9:08 AM CDT	River Flood Warning	GRB	Manitowoc	21 days
Apr 14, 9:43 AM CDT	Areal Flood Warning	GRB	Brown, Door, Kewaunee, Oconto, Outagamie, Shawano and 1 more	9 hr
Apr 14, 9:48 AM CDT	Areal Flood Warning	GRB	Brown, Calumet, Kewaunee, Manitowoc, Outagamie	9 hr
Apr 14, 10:16 AM CDT	Flash Flood Warning Considerable damage threat	GRB	Waupaca	6 hr
Apr 14, 11:23 AM CDT	River Flood Warning	GRB	Marathon	34 hr
Apr 14, 2:09 PM CDT	River Flood Warning	GRB	Kewaunee	32 hr
Apr 14, 4:37 PM CDT	River Flood Warning	GRB	Brown, Outagamie	44 hr
Apr 14, 5:53 PM CDT	Severe Thunderstorm Warning	GRB	Wood	37 min
Apr 14, 6:10 PM CDT	Severe Thunderstorm Warning	GRB	Waushara, Winnebago	50 min
Apr 14, 6:33 PM CDT	Special Weather Statement	GRB	Portage, Wood	27 min
Apr 14, 6:46 PM CDT	Areal Flood Advisory	GRB	Portage, Wood	2 hr
Apr 14, 6:51 PM CDT	Areal Flood Warning	GRB	Brown, Door, Kewaunee, Oconto, Outagamie, Shawano and 1 more	9 hr
Apr 14, 6:53 PM CDT	Areal Flood Warning	GRB	Brown, Calumet, Kewaunee, Manitowoc, Outagamie	9 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.