National Weather Service United States Department of Commerce


000
FLUS43 KGRB 202021
HWOGRB

Hazardous Weather Outlook
National Weather Service Green Bay WI
321 PM CDT Mon May 20 2024

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-212030-
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-
321 PM CDT Mon May 20 2024

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

.DAY ONE...Tonight

Fog is expected to develop tonight. Visibility may drop to a mile
or less at times before sunrise.

.DAYS TWO THROUGH SEVEN...Tuesday through Monday

Impactful severe weather and localized flooding will be possible across
much of the forecast area Tuesday afternoon and evening. Damaging
winds, large hail, and a few tornadoes will be possible with
stronger storms.

Heavy rainfall may result in rising river and stream levels Tuesday
night through Wednesday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$

LMZ521-522-541>543-212030-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
321 PM CDT Mon May 20 2024

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

.DAY ONE...Tonight

A few thunderstorms are still possible off the coast of Kewaunee
and Manitowoc counties this evening. Any thunderstorms will pose a
hazard to mariners.

.DAYS TWO THROUGH SEVEN...Tuesday through Monday

Confidence is increasing in potential for impactful severe weather
across much of the forecast area Tuesday afternoon and evening.
These storms may pose a threat to mariners.

Conditions may become hazardous to small craft Tuesday night
through Wednesday.

$$

Uhlmann

Northeast Wisconsin HWO
Southeast Wisconsin HWO
Upper Michigan HWO