FZUS53 KDTX 190720 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 320 AM EDT Sun Apr 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. LHZ422-191530- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 320 AM EDT Sun Apr 19 2026 .TODAY...West winds 15 to 20 knots becoming northwest 20 to 25 knots late in the afternoon. Mostly sunny in the morning, then partly cloudy with a chance of showers and a slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon. .TONIGHT...Northwest winds 20 to 25 knots diminishing to 15 to 20 knots in the late evening and overnight. Mostly clear. A chance of light rain and snow showers early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .MONDAY...Northwest winds 10 to 15 knots diminishing to 5 to 10 knots in the late morning and early afternoon, then backing to the southwest early in the afternoon. Mostly sunny. Waves 2 feet or less. .MONDAY NIGHT...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 2 to 4 feet after midnight. A Small Craft Advisory may be needed. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-191530- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 320 AM EDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH MONDAY MORNING... .TODAY...West winds 15 to 20 knots veering to the northwest late in the afternoon. Mostly sunny in the morning, then partly cloudy with a chance of showers, light snow showers and a slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon. .TONIGHT...Northwest winds 15 to 20 knots. Mostly clear. Waves 4 to 6 feet. Waves occasionally around 8 feet. .MONDAY...Northwest winds 10 to 15 knots becoming west 5 to 10 knots in the late morning and early afternoon, then backing to the southwest early in the afternoon. Mostly sunny. Waves 3 to 5 feet subsiding to 1 to 3 feet in the late morning and afternoon. Waves occasionally around 7 feet. .MONDAY NIGHT...South winds 10 to 15 knots increasing to 20 to 25 knots. Partly cloudy until early morning becoming mostly cloudy. Waves 1 to 3 feet building to 3 to 5 feet after midnight. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-191530- Port Austin to Harbor Beach MI- 320 AM EDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH MONDAY MORNING... .TODAY...West winds 10 to 15 knots becoming north 15 to 20 knots late in the afternoon. Mostly sunny in the morning, then partly cloudy with a chance of showers, light snow showers and a slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon. .TONIGHT...Northwest winds 15 to 20 knots. Partly cloudy. A chance of light snow showers early in the evening. Waves 5 to 7 feet. Waves occasionally around 10 feet. .MONDAY...Northwest winds 10 to 15 knots becoming southwest 5 to 10 knots early in the afternoon. Partly cloudy early in the morning becoming mostly sunny. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the afternoon. Waves occasionally around 7 feet. .MONDAY NIGHT...South winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Partly cloudy until early morning becoming mostly cloudy. Waves 1 to 3 feet building to 2 to 4 feet after midnight. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-191530- Harbor Beach to Port Sanilac MI- 320 AM EDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH MONDAY MORNING... .TODAY...West winds 10 to 15 knots becoming north 15 to 20 knots late in the afternoon. Mostly sunny in the morning, then partly cloudy with showers, light snow showers likely and a slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .TONIGHT...Northwest winds 15 to 20 knots. Partly cloudy. A chance of light snow showers early in the evening. Waves 4 to 6 feet. Waves occasionally around 8 feet. .MONDAY...Northwest winds 10 to 15 knots becoming northeast 5 to 10 knots early in the afternoon. Partly cloudy until late afternoon becoming mostly sunny. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the afternoon. Waves occasionally around 7 feet. .MONDAY NIGHT...Southeast winds 10 to 15 knots becoming south 15 to 20 knots after midnight. Partly cloudy. Waves 1 to 3 feet building to 2 to 4 feet after midnight. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-191530- Port Sanilac to Port Huron MI- 320 AM EDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH MONDAY MORNING... .TODAY...West winds 10 to 15 knots becoming northwest 15 to 20 knots late in the afternoon. Mostly sunny in the morning, then showers likely, possible snow showers and thunderstorms in the afternoon. Waves 1 to 3 feet. .TONIGHT...North winds 15 to 20 knots. Mostly cloudy early in the evening becoming partly cloudy. Light snow showers likely early in the evening. Waves 3 to 5 feet. Waves occasionally around 7 feet. .MONDAY...Northwest winds 15 to 20 knots becoming north 10 to 15 knots in the late morning and early afternoon, then becoming northeast 5 to 10 knots early in the afternoon. Mostly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the afternoon. .MONDAY NIGHT...Southeast winds 5 to 10 knots becoming south 10 to 15 knots in the late evening and early morning, then increasing to 15 to 20 knots after midnight. Partly cloudy. Waves 1 to 3 feet building to 2 to 4 feet after midnight. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-191530- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 320 AM EDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH THIS EVENING... .TODAY...West winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Sunny in the morning, then partly cloudy with a chance of showers and a slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .TONIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Mostly clear. A chance of showers early in the evening. Waves 1 to 3 feet. .MONDAY...Northwest winds 5 to 10 knots. Mostly sunny. Waves 2 feet or less. .MONDAY NIGHT...South winds 5 to 10 knots increasing to 10 to 15 knots in the late evening and overnight. Mostly clear. Waves 2 feet or less. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is 51 degrees. $$ CB You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes