Northeast Wisconsin Hazardous Weather Outlook

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FLUS43 KGRB 131811
HWOGRB

Hazardous Weather Outlook
National Weather Service Green Bay WI
111 PM CDT Sun Sep 13 2026

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-141815-
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-
111 PM CDT Sun Sep 13 2026

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

.DAY ONE...Rest of the Afternoon and Tonight

The first widespread frost of the season is expected across
the north late tonight into early Monday morning. A few of the
typical colder locations could drop to or slightly below freezing
for a few hours. A Frost Advisory remains in effect for portions
of north-central and far northeast WI.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

There is a chance of thunderstorms at times late Monday afternoon
into Tuesday morning. The severe weather risk is very low, but
the potential exists for locally heavy rainfall. Additional
chances of thunderstorms are expected later this weekend into next
weekend. It is too early to determine if any of the storms would
become severe.

There is an increased risk of rip currents on Lake Michigan
beaches Monday afternoon into Tuesday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed this afternoon and tonight.

$$

LMZ521-522-541>543-141815-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
111 PM CDT Sun Sep 13 2026

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

.DAY ONE...Rest of the Afternoon and Tonight

Gusty northwest winds could bring hazardous conditions for small
craft for the rest of the afternoon. A Small Craft Advisory is in
effect for the bay and on the lake from Rock Island Passage to
Two Rivers until 7 PM.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

Hazardous conditions for small craft will return Monday afternoon
and continue into Tuesday. Building waves and increasing southerly
winds will bring hazardous conditions on the bay and lake by mid
afternoon, resulting in a Small Craft Advisory from 4 PM to 10 PM
Monday. A Gale Watch is in effect from 10 PM Monday to 7 AM
Tuesday for southerly gales to around 35 knots. Additional marine
headlines will be needed on Wednesday due to gusty winds and high
waves.

Thunderstorms are possible Monday night, and then again Wednesday
into next weekend that may pose a hazard for mariners.

$$

Eckberg

Northeast Wisconsin HWO
Southeast Wisconsin HWO
Upper Michigan HWO