Winter Weather Monitor

056
FLUS43 KGRB 151955
HWOGRB

Hazardous Weather Outlook
National Weather Service Green Bay WI
255 PM CDT Fri May 15 2026

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-162000-
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-
255 PM CDT Fri May 15 2026

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

.DAY ONE...Tonight

Near-critical to critical fire weather conditions will continue
over far north central Wisconsin through this evening. A Red Flag
Warning continues for Vilas County through 9 pm.

There is a chance of thunderstorms across parts of north central
and central Wisconsin this evening through 2 am. A slight chance
of thunderstorms will continue over eastern WI after midnight,
ending by 5 am. A few strong to severe storms with damaging
winds to 60 mph and quarter sized hail are possible in mainly
central Wisconsin late this evening.

.DAYS TWO THROUGH SEVEN...Saturday through Friday

Near-critical to critical fire weather conditions are expected
across mainly northern Wisconsin Saturday afternoon.

The potential for thunderstorms and heavy rainfall will increase
late this weekend through Tuesday. There is a chance of severe
thunderstorms at times from Sunday night through Monday night,
though timing and coverage are still uncertain.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening.

$$

LMZ521-522-541>543-162000-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
255 PM CDT Fri May 15 2026

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. A Small Craft
Advisory is in effect for the bay and lake. The Small Craft
Advisory on the bay is in effect until midnight.

There is a small chance of thunderstorms after midnight tonight.

.DAYS TWO THROUGH SEVEN...Saturday through Friday

Conditions hazardous to small craft are expected Saturday morning
on the lake. A Small Craft Advisory is in effect until 10 am Saturday
morning.

Conditions hazardous to small craft are possible again Sunday night
through Tuesday night.

Thunderstorms will be possible from Sunday afternoon through Tuesday.
Any thunderstorm could pose a hazard to mariners.

$$

JLA