Alert archive / Michigan / River Flood Warnings in 2026

River Flood Warning 17, NWS Green Bay, WI

April 12, 2026Florence County, Wisconsin; Dickinson County, Iron County, Michigan

NWS Green Bay, WI issued this river flood warning at Apr 12, 2026, 3:02 PM CDT for Florence County, Wisconsin; Dickinson County, Iron County, Michigan. It took effect at Apr 13, 2026, 7:00 AM CDT. It was in force for 20 days.

The area

The counties it named.

The facts

Issued
Apr 12, 2026, 3:02 PM CDT (20:02 UTC)
In effect from
Apr 13, 2026, 7:00 AM CDT
Expired
May 3, 2026, 3:02 PM CDT
In force
20 days
Issued by
NWS Green Bay, WI
Area
Storm-based polygon
Flood severity
Minor

Counties Dickinson County, MI, Iron County, MI, Florence County, WI

The radar

The Marquette radar (KMQT), 79 km from the middle of the area, began a volume at 20:04 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 Menominee River near Florence (FLOW3). The gauge peaked at 11.41 ft at Apr 20, 2026, 6:00 PM CDT.

actionminormoderate68101204/1204/1304/1404/1504/1604/1704/1804/1904/2004/2104/2204/2304/2404/2504/2604/2704/2804/2904/3005/0105/0205/0305/04
Action stage
8.5 ft
Minor stage
9 ft
Moderate stage
11 ft
Major stage
13 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 04063000, 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 12, 1:43 PM CDT, 1 hour 19 minutes earlier.

Area forecast discussion, Apr 12, 1:43 PM CDT, 1 hour 19 minutes before
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Hazardous weather outlook, Apr 12, 3:48 AM CDT, 11 hours 14 minutes before
Hazardous Weather Outlook
National Weather Service Green Bay WI
348 AM CDT Sun Apr 12 2026

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-130900-
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-
348 AM CDT Sun Apr 12 2026

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

.DAY ONE...Today and Tonight

Heavy rain and scattered thunderstorms are expected this morning.
Potential for severe weather is low, but small hail could occur
with the strongest storms.

Elevated water levels continue along many rivers, with minor
flooding occurring on the Wolf River.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Periods of heavy rain and thunderstorms are expected at times from
Monday evening through Wednesday, and again late in the week. There
is a slight risk of severe thunderstorms with large hail and
damaging winds Monday evening, and a marginal risk in parts of
central and east central Wisconsin Tuesday afternoon and evening.

Elevated water levels will continue along many rivers, with minor
flooding on the Wolf River persisting through next week. Runoff
from rainfall and rapid snow melt in the Upper Peninsula will
likely result in minor flooding on the Menominee River by
Tuesday or Wednesday, with moderate flooding possible during the
end of the work week and weekend.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to report any hail or wind gusts greater
than 40 mph to the National Weather Service in Green Bay.

LMZ521-522-541>543-130900-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
348 AM CDT Sun Apr 12 2026

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

.DAY ONE...Today and Tonight

Conditions hazardous to small craft are expected on Lake Michigan
and the bay.

There is a chance of thunderstorms this morning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Conditions hazardous to small craft will continue into Monday
morning on Lake Michigan.

Thunderstorms will be possible at times from Monday night through
Wednesday, and again late in the week.

Kieckbusch

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 12, 2:35 AM CDTSpecial Weather StatementGRBWaupaca, Waushara40 min
Apr 12, 3:13 AM CDTSpecial Weather StatementGRBOutagamie47 min
Apr 12, 10:51 AM CDTRiver Flood WarningGRBMarinette15 days
Apr 12, 10:51 AM CDTRiver Flood WarningGRBMarinette10 days
Apr 12, 10:51 AM CDTRiver Flood WarningGRBFlorence, Marinette11 days
Apr 12, 10:54 AM CDTRiver Flood WarningGRBFlorence21 days
Apr 12, 10:54 AM CDTRiver Flood WarningGRBMarathon21 days
Apr 12, 1:53 PM CDTRiver Flood WarningGRBOconto7 days
Apr 12, 5:24 PM CDTSpecial Weather StatementGRBBrown, Calumet, Manitowoc, Outagamie36 min
Apr 12, 5:36 PM CDTMarine Dense Fog AdvisoryGRB13 hr
Apr 12, 5:59 PM CDTSpecial Weather StatementGRBDoor, Kewaunee, Manitowoc46 min

Nearby

River Flood Warnings in Michigan, 2026River Flood Warnings in Wisconsin, 2026Every 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.