National Weather Service Marine Forecast FZUS63 KDTX

FZUS63 KDTX 161937
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
337 PM EDT Fri May 16 2025

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.

SYNOPSIS
Low pressure tracks slowly over the upper Midwest today before reaching Lake Superior on Saturday at around 29.30 inches. This sends a cold front through the area tonight. A line of showers and storms is expected ahead of this front with isolated severe storms possible. Low departs Sunday as weak high pressure, 29.90 inches, builds in.

LCZ460-170345
Lake St Clair
337 PM EDT Fri May 16 2025

SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING

TONIGHT
Southeast winds 10 to 15 knots becoming south 15 to 20 knots in the late evening and early morning...then becoming southwest 10 to 15 knots early in the morning. Partly cloudy with a chance of showers and thunderstorms in the evening...then mostly cloudy with a chance of thunderstorms after midnight. Waves 1 to 3 feet.

SATURDAY
Southwest winds 10 to 15 knots becoming west 15 to 20 knots with gusts to 30 knots in the late morning and afternoon. Partly sunny with a chance of light showers. Waves 1 to 3 feet.

SATURDAY NIGHT
West winds 15 to 20 knots with gusts to 30 knots diminishing to 10 to 15 knots after midnight. Partly cloudy. Waves 1 to 3 feet.

SUNDAY
Northwest winds 10 to 15 knots diminishing to 5 to 10 knots early in the afternoon. Partly sunny. Waves 2 feet or less.

SUNDAY NIGHT
North winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. Partly cloudy. Waves 2 feet or less.

MONDAY
North winds 10 to 15 knots. Partly sunny becoming mostly clear. Waves 2 feet or less.

TUESDAY
Northeast winds 15 to 20 knots. Partly cloudy. A chance of showers. Waves 1 to 3 feet.

WEDNESDAY
North winds 15 to 20 knots. Partly cloudy. Showers likely. Waves 1 to 3 feet.

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KDK

Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc

Graphical marine forecasts are available at weather.gov/greatlakes