Small Craft Advisory Covers Lake Michigan Nearshore Waters From Two Rivers to Sheboygan September 11–12
Sheboygan County, WI — September 11, 2026.
A Small Craft Advisory begins at 3 p.m. CDT Friday, September 11, for Lake Michigan nearshore waters from Two Rivers to Sheboygan. The advisory applies to waters within five nautical miles of shore and remains in effect through 10 a.m. CDT Saturday, September 12.
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7-Day Weather Forecast
Friday, September 11
The National Weather Service Green Bay nearshore forecast was updated at 6:56 a.m. CDT Friday. South winds are expected to increase from 10 to 15 knots to 15 to 25 knots during the late morning and afternoon. Waves are forecast to build from 1 to 3 feet to 3 to 5 feet.
Friday night, south winds of 15 to 25 knots are expected to ease to 10 to 15 knots late in the evening and overnight. Waves should subside from 3 to 5 feet to 2 to 4 feet after midnight.
Saturday, September 12
Southwest winds of 10 to 20 knots and waves of 2 to 4 feet are expected in the Two Rivers-to-Sheboygan zone before conditions ease later Saturday. The active advisory period ends at 10 a.m. CDT.
The National Weather Service advises inexperienced mariners, especially those operating smaller vessels, to avoid navigating in hazardous conditions. Boaters planning to launch or travel on Lake Michigan should check the latest marine forecast before departing.
