FZUS53 KDTX 211940 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 340 PM EDT Wed May 21 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. LHZ422-220345- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 340 PM EDT Wed May 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING... .TODAY...Northeast winds 20 to 25 knots. Gusts to 30 knots in the late morning and afternoon. Rain showers. Patchy fog in the afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet. .TONIGHT...Northeast winds 20 to 25 knots with gusts to 30 knots becoming north 15 to 20 knots after midnight. Cloudy with showers likely. Patchy fog. Waves 3 to 5 feet. Waves occasionally around 7 feet. .THURSDAY...North winds 15 to 20 knots. Patchy fog in the morning. Cloudy with a chance of showers. Waves 2 to 4 feet. .THURSDAY NIGHT...Northwest winds 15 to 20 knots. Mostly cloudy. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-220345- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 340 PM EDT Wed May 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING... .TODAY...Northeast winds 20 to 25 knots. Gusts to 30 knots in the late morning and afternoon. A chance of showers in the morning, then showers in the afternoon. Waves 4 to 6 feet. Waves occasionally around 8 feet. .TONIGHT...Northeast winds 20 to 25 knots. Gusts to 30 knots early in the evening. Light showers in the evening, then showers likely after midnight. Patchy fog. Waves 4 to 6 feet. Waves occasionally around 7 feet. .THURSDAY...North winds 15 to 20 knots. Gusts to 30 knots early in the afternoon. Patchy fog in the morning. Cloudy with showers likely. Waves 4 to 6 feet. Waves occasionally around 8 feet. .THURSDAY NIGHT...Northwest winds 15 to 20 knots. Mostly cloudy. A chance of showers after midnight. Waves 3 to 5 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-220345- Port Austin to Harbor Beach MI- 340 PM EDT Wed May 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING... .TODAY...Northeast winds 15 to 20 knots. Light showers likely in the morning, then showers in the afternoon. Patchy fog in the afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet. .TONIGHT...Northeast winds 15 to 20 knots. Patchy fog in the evening. Light showers in the evening, then showers likely after midnight. Waves 4 to 6 feet. Waves occasionally around 8 feet. .THURSDAY...North winds 15 to 20 knots. Cloudy with showers likely. Patchy fog in the morning. Areas of dense fog in the afternoon. Waves 4 to 6 feet. Waves occasionally around 8 feet. .THURSDAY NIGHT...Northwest winds 15 to 20 knots. Mostly cloudy. Light showers likely in the evening, then a chance of showers after midnight. Waves 3 to 5 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-220345- Harbor Beach to Port Sanilac MI- 340 PM EDT Wed May 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING... .TODAY...Northeast winds 10 to 15 knots. Light showers likely in the morning, then showers in the afternoon. Patchy fog in the afternoon. Waves 2 to 4 feet. .TONIGHT...Northeast winds 10 to 15 knots. Light showers in the evening, then showers likely after midnight. Patchy fog. Waves 2 to 4 feet. .THURSDAY...North winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and afternoon. Cloudy with showers likely. Patchy fog. Waves 3 to 5 feet. Waves occasionally around 7 feet. .THURSDAY NIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots after midnight. Mostly cloudy. Light showers likely in the evening, then a chance of showers after midnight. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-220345- Port Sanilac to Port Huron MI- 340 PM EDT Wed May 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING... .TODAY...Northeast winds 10 to 15 knots. Cloudy. Light showers likely in the morning, then showers likely and a slight chance of thunderstorms in the afternoon. Patchy fog. Waves 2 to 4 feet. .TONIGHT...North winds 10 to 15 knots. Cloudy with showers likely. Patchy fog. Waves 2 to 4 feet. .THURSDAY...North winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and afternoon. Patchy fog in the morning. Cloudy with showers likely. Waves 2 to 4 feet. .THURSDAY NIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots after midnight. Mostly cloudy. Light showers likely in the evening, then a chance of showers after midnight. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-220345- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 340 PM EDT Wed May 21 2025 .TODAY...East winds 15 to 20 knots becoming northeast 10 to 15 knots in the afternoon. Light showers likely and a slight chance of thunderstorms in the morning, then showers and a slight chance of thunderstorms in the afternoon. Patchy fog. Waves 3 to 5 feet subsiding to 1 to 3 feet in the afternoon. Waves occasionally around 7 feet. .TONIGHT...North winds 5 to 10 knots becoming west 10 to 15 knots in the late evening and overnight. Patchy fog in the evening. Rain showers and a slight chance of thunderstorms in the evening, then a chance of showers after midnight. Waves 2 feet or less. .THURSDAY...Northwest winds 10 to 15 knots increasing to 15 to 20 knots early in the afternoon. Cloudy with a chance of showers. Waves 1 to 3 feet. .THURSDAY NIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Mostly cloudy in the evening becoming partly cloudy. Waves 1 to 3 feet. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is 57 degrees. $$ AM You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes