Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 230246 RRA
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
944 PM 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...29.50 INCHES...WILL CROSS THE STRAITS
REGION TONIGHT. AS THE LOW LIFTS INTO QUEBEC ON THURSDAY IT WILL
DRIVE A WEAK COLD FRONT INTO THE SOUTHERN GREAT LAKES. THIS FRONT
WILL THEN 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 DRIVING A STRONG COLD FRONT ACROSS THE
SOUTHERN GREAT LAKES.

LCZ460-230900-
LAKE ST CLAIR-
944 PM EST WED FEB 22 2017

.REST OF TONIGHT...SOUTH WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY. WAVES
1 TO 3 FEET.
.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 AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE EVENING, THEN SHOWERS AND A CHANCE OF THUNDERSTORMS AFTER
MIDNIGHT. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTHEAST WINDS 10 TO 15 KNOTS. CLOUDY. LIGHT SHOWERS AND
A CHANCE OF THUNDERSTORMS EARLY IN THE MORNING,...THEN A CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE LATE MORNING AND AFTERNOON. WAVES
2 FEET OR LESS.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 15 KNOTS. SHOWERS AND
THUNDERSTORMS. WAVES 2 FEET OR LESS.
.SATURDAY...SOUTHWEST WINDS 15 TO 20 KNOTS. GUSTS TO 30 KNOTS IN THE
EVENING. MOSTLY CLOUDY. SHOWERS AND THUNDERSTORMS LIKELY EARLY IN THE
MORNING,...THEN A CHANCE OF LIGHT SHOWERS UNTIL EARLY EVENING. A
CHANCE OF LIGHT SNOW SHOWERS IN THE AFTERNOON AND EVENING. WAVES 1 TO
3 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
.SUNDAY...SOUTHWEST WINDS 15 TO 20 KNOTS. PARTLY CLOUDY. WAVES
2 FEET OR LESS.
.MONDAY...EAST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. A CHANCE OF SNOW
AND RAIN. WAVES 2 FEET OR LESS.

$$

DG

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/DTX/GLFTABLESC

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES


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