FZUS53 KDTX 191846 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 246 PM EDT Tue May 19 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. LHZ422-200300- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 246 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... .TONIGHT...West winds 20 to 25 knots becoming northwest 15 to 20 knots in the late evening and overnight. Partly cloudy. A slight chance of showers in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .WEDNESDAY...Northwest winds 15 to 20 knots becoming north 10 to 15 knots in the late morning and early afternoon, then becoming northeast 15 to 20 knots early in the afternoon. Partly cloudy becoming mostly sunny in the late morning and early afternoon becoming partly cloudy. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Northeast winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Partly cloudy. Waves 1 to 3 feet. .THURSDAY...Northeast winds 15 to 20 knots. Mostly sunny until late afternoon becoming partly cloudy. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-200300- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 246 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... .TONIGHT...West winds 15 to 20 knots becoming northwest 10 to 15 knots after midnight. Partly cloudy. A slight chance of showers in the evening. Waves 3 to 5 feet. Waves occasionally around 7 feet. .WEDNESDAY...Northwest winds 10 to 15 knots becoming northeast 15 to 20 knots early in the afternoon. Partly cloudy becoming mostly sunny in the late morning and early afternoon becoming partly cloudy. Waves 2 to 4 feet. .WEDNESDAY NIGHT...Northeast winds 15 to 20 knots becoming north 10 to 15 knots after midnight. Partly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .THURSDAY...Northeast winds 15 to 20 knots. Partly cloudy becoming mostly sunny in the late morning and early afternoon becoming partly cloudy. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-200300- Port Austin to Harbor Beach MI- 246 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... .TONIGHT...West winds 15 to 20 knots becoming northwest 10 to 15 knots after midnight. Mostly cloudy. A slight chance of showers in the evening. Waves 2 to 4 feet. .WEDNESDAY...North winds 10 to 15 knots. Partly cloudy becoming mostly sunny in the late morning and early afternoon becoming partly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .WEDNESDAY NIGHT...North winds 15 to 20 knots diminishing to 10 to 15 knots after midnight. Partly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny until late afternoon becoming partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-200300- Harbor Beach to Port Sanilac MI- 246 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 230 IN EFFECT UNTIL 7 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots this evening, then veering to the north after midnight. Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Some thunderstorms may be severe with damaging winds and large hail. Waves 1 to 3 feet building to 2 to 4 feet early in the morning. .WEDNESDAY...North winds 10 to 15 knots. Partly cloudy becoming mostly sunny in the late morning and early afternoon becoming partly cloudy. Waves 2 to 4 feet. .WEDNESDAY NIGHT...North winds 10 to 15 knots. Partly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-200300- Port Sanilac to Port Huron MI- 246 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 230 IN EFFECT UNTIL 7 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots this evening, then becoming north 15 to 20 knots after midnight. Mostly cloudy. A chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Some thunderstorms may produce damaging winds and large hail in the evening. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .WEDNESDAY...North winds 15 to 20 knots. Partly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .WEDNESDAY NIGHT...North winds 15 to 20 knots. Mostly cloudy early in the evening becoming partly cloudy. Waves 2 to 4 feet. .THURSDAY...Northeast winds 10 to 15 knots becoming north 15 to 20 knots early in the afternoon. Mostly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-200300- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 246 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 230 IN EFFECT UNTIL 7 PM EDT THIS EVENING... .TONIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots in the late evening and early morning, then veering to the northwest early in the morning. Mostly cloudy. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. Some thunderstorms may produce damaging winds and large hail in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .WEDNESDAY...North winds 10 to 15 knots becoming northeast 5 to 10 knots early in the afternoon. Mostly cloudy. Waves 2 feet or less. .WEDNESDAY NIGHT...East winds 10 to 15 knots becoming northeast 15 to 20 knots in the late evening and early morning, then diminishing to 10 to 15 knots after midnight. Partly cloudy becoming mostly cloudy in the late evening and early morning becoming partly cloudy. Waves 1 to 3 feet. .THURSDAY...Northeast winds 10 to 15 knots becoming east 15 to 20 knots in the late morning and afternoon. Mostly sunny. Waves 1 to 3 feet. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is missing. $$ AM You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes