Northeast Wisconsin Hazardous Weather Outlook

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FLUS43 KGRB 180621
HWOGRB

Hazardous Weather Outlook
National Weather Service Green Bay WI
121 AM CDT Fri Sep 18 2026

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-190630-
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-
121 AM CDT Fri Sep 18 2026

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

.DAY ONE...Today and Tonight

Moderate to heavy rainfall is likely over central and east-
central Wisconsin this afternoon through tonight. Localized
flooding will be possible. There will also be a chance of
thunderstorms tonight, but severe weather is not expected.

There will be an increased risk of rip currents along Lake
Michigan beaches south of Algoma late tonight.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

The chance of thunderstorms will continue on Saturday morning over
east-central Wisconsin. The risk of severe weather is low.

There will be an increased risk of rip currents along Lake
Michigan beaches south of Algoma through Saturday afternoon.

The rip current risk will also be high from Sunday into Monday.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to report any flooding or rainfalls over 1
inch to the National Weather Service in Green Bay.

$$

LMZ521-522-541>543-190630-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
121 AM CDT Fri Sep 18 2026

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

.DAY ONE...Today and Tonight

There is a chance of thunderstorms tonight. The thunderstorms may
pose a hazard for mariners.

Conditions hazardous to small craft are expected south of Algoma
late tonight.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Chances of thunderstorms continue into Saturday morning. The
thunderstorms may pose a hazard for mariners.

Conditions hazardous to small craft are expected at times from
Saturday through Monday.

$$

MPC

Northeast Wisconsin HWO
Southeast Wisconsin HWO
Upper Michigan HWO