Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 242042
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
342 PM EST WED DEC 24 2014

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...29.30 INCHES...WILL MOVE FROM METRO
DETROIT THIS EVENING TO GEORGIAN BAY BY MIDNIGHT...DEEPENING TO
29.10 INCHES. THE LOW WILL LIFT INTO QUEBEC BY THURSDAY
MORNING...FURTHER DEEPENING TO 28.90 INCHES. HIGH PRESSURE WILL
EXPAND ACROSS THE OHIO VALLEY ON THURSDAY WHILE THE LOW PRESSURE
SYSTEM CONTINUES TO LIFT NORTHEAST ACROSS CANADA. WEAK LOW PRESSURE
IS FORECAST TO DEVELOP OVER THE GREAT LAKES ON SATURDAY...DRIVING A
COLD FRONT ACROSS THE AREA SATURDAY NIGHT AS IT LIFTS INTO EASTERN
CANADA.

LCZ460-250915-
LAKE ST CLAIR-
342 PM EST WED DEC 24 2014

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...SOUTHWEST WINDS TO 30 KNOTS...DIMINISHING TO 20 TO
25 KNOTS LATE. GUSTS TO 35 KNOT GALES. LIGHT RAIN. WAVES 2 TO 4
FEET...SUBSIDING TO 1 TO 3 FEET LATE.
.THURSDAY...WEST WINDS 15 TO 20 KNOTS...BECOMING SOUTHWEST 10 TO
15 KNOTS LATE. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY
EARLY IN THE EVENING...BECOMING PARTLY CLOUDY OVERNIGHT. WAVES
2 FEET OR LESS.
.FRIDAY...SOUTHWEST WINDS 10 TO 15 KNOTS. PARTLY SUNNY. WAVES 2 FEET
OR LESS.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY IN THE
EVENING...BECOMING MOSTLY CLOUDY OVERNIGHT. WAVES 2 FEET OR LESS.
.SATURDAY...SOUTHWEST WINDS 10 TO 15 KNOTS...BECOMING WEST 5 TO
10 KNOTS BY EVENING. CLOUDY. A CHANCE OF LIGHT SHOWERS...THEN A
CHANCE OF LIGHT RAIN AND SNOW SHOWERS BY EVENING. WAVES 2 FEET OR
LESS.
.SUNDAY...NORTHWEST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY. A CHANCE OF
LIGHT RAIN AND SNOW SHOWERS. WAVES 2 FEET OR LESS.
.MONDAY...NORTH WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES 2 FEET OR
LESS.

$$

JVC/SC

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


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