Watches, Warnings & Advisories



2 products found for Marine Zone: LMZ521

Small Craft Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
305 PM CDT Tue May 12 2026

LMZ521-522-130415-
/O.CON.KGRB.SC.Y.0050.000000T0000Z-260514T0000Z/
Green Bay south of line from  Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from  Oconto WI to Little Sturgeon Bay WI-
305 PM CDT Tue May 12 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT
WEDNESDAY...

* WHAT...South winds 15 to 25 kts with gusts to 30 kts veering
  northwest and gusting to 30 to 35 kts early Wednesday morning.
  Waves 2 to 5 ft expected.

* WHERE...Central and Southern Bay of Green Bay.

* WHEN...Until 7 PM CDT Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$




Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Green Bay WI
140 PM CDT Tue May 12 2026

LMZ521-522-541>543-131845-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
140 PM CDT Tue May 12 2026

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

.DAY ONE...Tonight

There is a slight chance of thunderstorms from 4 to 7 pm today.

A Small Craft Advisory is in effect for the lake and bay.

.DAYS TWO THROUGH SEVEN...Wednesday through Tuesday

Conditions hazardous to small craft are expected through early
Wednesday evening on the bay and lake. A Small Craft Advisory is
in effect.

Conditions hazardous to small craft are possible again Friday
into Friday night.

Thunderstorms will be possible on Friday, and again from Sunday
into Monday.

$$

MPC