Great Lakes Forecast
Issued by NWS

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414
FZUS63 KDTX 220843
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
343 AM EST WED FEB 22 2017

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...29.60 INCHES...WILL MOVE FROM SOUTHERN
MINNESOTA THIS MORNING TO THE STRAITS REGION TONIGHT...DEEPENING TO
29.50 INCHES. THE LOW WILL LIFT INTO QUEBEC ON THURSDAY AS IT DRIVES
A WEAK COLD FRONT INTO THE SOUTHERN GREAT LAKES. THIS FRONT WILL
LIFT NORTH AS A WARM FRONT ON FRIDAY AS DEEPENING LOW PRESSURE MOVES
FROM IOWA TO NORTHERN MICHIGAN. THIS LOW WILL EXIT TO THE NORTHEAST
FRIDAY NIGHT.

LCZ460-222115-
LAKE ST CLAIR-
343 AM EST WED FEB 22 2017

.TODAY...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY IN THE MORNING...
BECOMING MOSTLY SUNNY. PATCHY FOG IN THE MORNING. WAVES 2 FEET OR
LESS.
.TONIGHT...SOUTH WINDS 10 TO 15 KNOTS. PARTLY CLOUDY EARLY IN THE
EVENING...BECOMING MOSTLY CLOUDY. WAVES 2 FEET OR LESS.
.THURSDAY...SOUTHWEST WINDS 10 TO 15 KNOTS...BECOMING NORTHWEST 5 TO
10 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON, THEN...BECOMING
NORTHEAST 10 TO 15 KNOTS LATE IN THE AFTERNOON. PARTLY SUNNY. WAVES
2 FEET OR LESS.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 15 KNOTS...DIMINISHING TO
5 TO 10 KNOTS IN THE LATE EVENING AND EARLY MORNING, THEN...BECOMING
EAST 10 TO 15 KNOTS EARLY IN THE MORNING. A CHANCE OF LIGHT RAIN AND
THUNDERSTORMS IN THE EVENING, THEN RAIN AND A CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTH WINDS 10 TO 15 KNOTS. LIGHT RAIN AND A CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON AND EVENING. WAVES 1 TO 3 FEET.
.SATURDAY...WEST WINDS 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS. RAIN,
THUNDERSTORMS AND A CHANCE OF LIGHT SNOW. WAVES 1 TO 3 FEET. A SMALL
CRAFT ADVISORY MAY BE NEEDED.
.SUNDAY...SOUTHWEST WINDS 15 TO 20 KNOTS. PARTLY CLOUDY. WAVES 1 TO
3 FEET.

$$

JVC

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/DTX/GLFTABLESC (ALL LOWER CASE)

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)



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