Watches, Warnings & Advisories



2 products found for Marine Zone: LMZ543

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Green Bay WI
220 PM CDT Sat Oct 4 2025

LMZ521-522-541>543-051930-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
220 PM CDT Sat Oct 4 2025

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

.DAY ONE...Tonight

Increasing southerly winds and building waves will result in
conditions becoming hazardous to small craft on Lake Michigan
beginning late this afternoon.

.DAYS TWO THROUGH SEVEN...Sunday through Saturday

Strong and gusty southerly winds and building waves will result
in conditions hazardous to small craft on Lake Michigan through
Monday morning. Hazardous marine conditions will also occur on
the Bay of Green Bay on Sunday and Sunday night.

There is a chance of thunderstorms late Sunday night. Any storm
could pose a hazard to mariners.

$$

MPC




Small Craft Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
846 PM CDT Sat Oct 4 2025

LMZ541>543-051000-
/O.CON.KGRB.SC.Y.0075.000000T0000Z-251006T1200Z/
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
846 PM CDT Sat Oct 4 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM CDT MONDAY...

* WHAT...South winds 15 to 25 kt with gusts up to 30 to 35 kt,
  strongest Sunday afternoon. Waves increasing to 5 to 8 ft by
  Sunday afternoon. Waves will subside late Sunday night.

* WHERE...Lake Michigan nearshore waters from Washington Island
  to Sheboygan.

* WHEN...From 4 PM this afternoon to 7 AM CDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$