National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Watches, Warnings & Advisories


2 products found for Marine Zone: LMZ541

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Green Bay WI
412 AM CDT Wed Sep 3 2025

LMZ521-522-541>543-040915-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
412 AM CDT Wed Sep 3 2025

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

.DAY ONE...Today and Tonight

There is a chance of thunderstorms this morning. Any thunderstorm
could produce hazardous conditions for boaters.

There is a chance of waterspouts this morning.

Gusty northwest winds this afternoon will result in hazardous
conditions to small craft. A Small Craft Advisory has been issued
for this afternoon for the bay and nearshore waters north of
Sturgeon Bay.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

There is a chance of waterspouts late Thursday into Friday.

Conditions hazardous to small craft are likely Thursday evening
through Friday. A few gale force gusts are also possible.

$$

Bersch/Kruk

Small Craft Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Green Bay WI
949 AM CDT Wed Sep 3 2025

LMZ521-522-541-040000-
/O.CON.KGRB.SC.Y.0070.250903T1700Z-250904T0000Z/
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-
Rock Island Passage to Sturgeon Bay WI-
949 AM CDT Wed Sep 3 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

* WHAT...Northwest winds 15 to 20 kts with gusts up to 25 kts and
  waves 2 to 4 ft expected.

* WHERE...Central and Southern Bay of Green Bay, and Lake
  Michigan nearshore waters from Washington Island to Sturgeon
  Bay.

* WHEN...Until 7 PM CDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
TSK