FZUS53 KDTX 201223 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 823 AM EDT Mon Apr 20 2026 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. LHZ422-202030- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 823 AM EDT Mon Apr 20 2026 .REST OF TODAY...Northwest winds 10 to 15 knots becoming west 5 to 10 knots in the late morning and early afternoon, then backing to the south late in the afternoon. Mostly sunny. Waves 2 feet or less. .TONIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots in the late evening and overnight. Partly cloudy until early morning becoming mostly cloudy. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...South winds 20 to 25 knots becoming southwest 10 to 15 knots. Mostly cloudy early in the morning then clearing. A chance of sprinkles until late afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the afternoon. A Small Craft Advisory may be needed. .TUESDAY NIGHT...West winds 10 to 15 knots becoming north 5 to 10 knots in the late evening and overnight. Mostly clear. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-202030- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 823 AM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .REST OF TODAY...Northwest winds 10 to 15 knots diminishing to 5 to 10 knots late in the morning, then backing to the west early in the afternoon backing to the south late in the afternoon. Mostly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .TONIGHT...South winds 10 to 15 knots increasing to 20 to 25 knots. Partly cloudy until early morning becoming mostly cloudy. Waves 1 to 3 feet building to 3 to 5 feet after midnight. Waves occasionally around 7 feet. .TUESDAY...Southwest winds 20 to 25 knots diminishing to 10 to 15 knots. Mostly cloudy early in the morning then clearing. A chance of sprinkles until late afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the afternoon. Waves occasionally around 7 feet. .TUESDAY NIGHT...West winds 10 to 15 knots veering to the north in the late evening and early morning, then diminishing to 5 to 10 knots after midnight. Mostly clear. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-202030- Port Austin to Harbor Beach MI- 823 AM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .REST OF TODAY...Northwest winds 10 to 15 knots diminishing to 5 to 10 knots early in the afternoon, then veering to the east late in the afternoon. Mostly sunny. Waves 3 to 5 feet subsiding to 1 to 3 feet in the afternoon. Waves occasionally around 7 feet. .TONIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Mostly clear until early morning becoming mostly cloudy. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...South winds 15 to 20 knots diminishing to 10 to 15 knots early in the afternoon. Mostly cloudy becoming partly cloudy in the late morning and early afternoon becoming mostly sunny. A chance of sprinkles until late afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the afternoon. Waves occasionally around 7 feet. .TUESDAY NIGHT...South winds 5 to 10 knots backing to the north in the late evening and overnight. Mostly clear. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-202030- Harbor Beach to Port Sanilac MI- 823 AM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .REST OF TODAY...Northwest winds 10 to 15 knots becoming north 5 to 10 knots early in the afternoon, then veering to the east late in the afternoon. Mostly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Mostly clear until early morning becoming mostly cloudy. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...South winds 15 to 20 knots diminishing to 10 to 15 knots early in the afternoon. Mostly cloudy becoming partly cloudy in the late morning and early afternoon becoming mostly sunny. A chance of sprinkles until late afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet early in the afternoon. Waves occasionally around 7 feet. .TUESDAY NIGHT...Southwest winds 5 to 10 knots veering to the north in the late evening and overnight. Mostly clear. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-202030- Port Sanilac to Port Huron MI- 823 AM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .REST OF TODAY...Northwest winds 10 to 15 knots becoming north 5 to 10 knots early in the afternoon, then veering to the northeast late in the afternoon. Mostly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .TONIGHT...Southeast winds 5 to 10 knots becoming south 15 to 20 knots. Mostly clear until early morning becoming mostly cloudy. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots early in the afternoon. Mostly cloudy becoming partly cloudy in the late morning and early afternoon becoming mostly sunny. A chance of sprinkles until late afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet early in the afternoon. Waves occasionally around 7 feet. .TUESDAY NIGHT...Southwest winds 5 to 10 knots veering to the northwest in the late evening and overnight. Mostly clear. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-202030- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 823 AM EDT Mon Apr 20 2026 .REST OF TODAY...Northwest winds 5 to 10 knots. Sunny. Waves 2 feet or less. .TONIGHT...South winds 5 to 10 knots increasing to 10 to 15 knots in the late evening and overnight. Clear until early morning becoming partly cloudy. Waves 2 feet or less. .TUESDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots early in the afternoon. Partly cloudy. A chance of sprinkles until late afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...West winds 10 to 15 knots diminishing to 5 to 10 knots in the late evening and overnight. Partly cloudy. A chance of showers until early morning. Waves 2 feet or less. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is 47 degrees. $$ JA You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes