fzus53 kdtx 200756
nshdtx
expires:202510201600;;442038

nearshore marine forecast for michigan
national weather service detroit/pontiac mi
356 am edt mon oct 20 2025

for waters within five nautical miles of shore

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.


lhz441-201600-
port austin to harbor beach mi-
356 am edt mon oct 20 2025

...small craft advisory in effect from late tonight through
tuesday evening...

.today...northwest winds 20 to 25 knots becoming west 10 to
15 knots. sunny. waves 4 to 6 feet subsiding to 1 to 3 feet late
in the afternoon. waves occasionally around 8 feet. 
.tonight...south winds 10 to 15 knots increasing to 20 to
25 knots after midnight. clear until early morning becoming
partly cloudy. a chance of showers after midnight. waves 1 to
3 feet building to 4 to 6 feet after midnight. waves occasionally
around 8 feet. 
.tuesday...south winds 20 to 25 knots veering to the southwest in
the late morning and afternoon. becoming partly cloudy in the
late morning and afternoon. light showers early in the morning. a
chance of showers in the late morning and afternoon. waves 4 to
6 feet. waves occasionally around 8 feet. 
.tuesday night...southwest winds 15 to 20 knots. partly cloudy
early in the evening. a chance of showers early in the evening.
light showers in the late evening and overnight. a chance of
waterspouts after midnight. waves 4 to 6 feet. waves occasionally
around 8 feet. 

see lake huron open lake forecast for days 3 through 5.

$$