Hazardous Weather Outlook
Issued by NWS Green Bay, WI

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
603
FLUS43 KGRB 182010
HWOGRB

Hazardous Weather Outlook
National Weather Service Green Bay WI
310 PM CDT Mon Aug 18 2025

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-192015-
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-
310 PM CDT Mon Aug 18 2025

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

.DAY ONE...Tonight

Isolated thunderstorms are expected, mainly across east central WI
through early this evening. Severe storms are not expected;
however, brief torrential rainfall may cause localized flooding in
low-lying and urban areas.

There is a high risk of dangerous swimming conditions and rip
currents along Lake Michigan beaches in Kewaunee and Manitowoc
counties through early this evening. A Beach Hazards Statement is
in effect.

Locally dense fog is expected overnight, reducing visibility to
under one half mile, creating hazardous and rapidly changing
travel conditions.

.DAYS TWO THROUGH SEVEN...Tuesday through Monday

There is a slight chance of thunderstorms in east-central
Wisconsin Tuesday afternoon and across the entire area on Friday.
Severe weather is not expected.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to report any flooding to the National
Weather Service in Green Bay.

$$

LMZ521-522-541>543-192015-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
310 PM CDT Mon Aug 18 2025

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

.DAY ONE...Tonight

Conditions hazardous to small craft are expected through early
this evening along Lake Michigan south of Sturgeon Bay due to
persistent southeast winds and high waves. A Small Craft Advisory
is in effect. A thunderstorm is possible through this evening,
mainly south of Sturgeon Bay.

Patchy fog may develop late tonight, which may pose a navigation
hazard for mariners due to reduced visibility.

.DAYS TWO THROUGH SEVEN...Tuesday through Monday

The probability for widespread hazardous weather is low.

$$

Kruk