FZUS63 KDTX 191940

GLFSC 



Lake St Clair Forecast

National Weather Service Detroit/Pontiac MI

340 PM EDT Thu Mar 19 2026



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...A weakening cold front and diffuse pressure pattern

dominate the Great Lakes today, followed by a compact clipper

that tracks through Friday morning. Weak high pressure on

Saturday before a strong cold front sinks across the region with

gusty northeast wind on Sunday. Stronger high pressure follows on

Monday with another cold front expected Tuesday.



LCZ460-200400-

Lake St Clair-

340 PM EDT Thu Mar 19 2026



.TONIGHT...Light and variable winds becoming south 10 to 15 knots.

Partly cloudy becoming mostly cloudy. Waves 2 feet or less.

.FRIDAY...Southwest winds 10 to 15 knots veering to the west in the

afternoon. Mostly cloudy. A chance of light rain in the morning.

Waves 2 feet or less.

.FRIDAY NIGHT...North winds 5 to 10 knots. Mostly cloudy early in

the evening becoming partly cloudy. Waves 2 feet or less.

.SATURDAY...Light and variable winds becoming southeast 5 to 10

knots early in the afternoon. Mostly cloudy. Waves 2 feet or less.

.SATURDAY NIGHT...South winds 5 to 10 knots. Partly cloudy. Waves 2

feet or less.

.SUNDAY...South winds 10 to 15 knots backing to the northeast in the

afternoon...then becoming north 15 to 20 knots in the evening.

Partly sunny in the morning becoming mostly cloudy. A chance of

light rain. Waves 1 to 3 feet.

.MONDAY...North winds 15 to 20 knots. Partly cloudy. Waves 2 feet or

less.

.TUESDAY...Southwest winds 10 to 15 knots. Partly cloudy. Waves 2

feet or less.



$$



TF



Experimental modernized open lake forecast is available online at

weather.gov/dtx/glftablesc



Graphical marine forecasts are available at weather.gov/greatlakes