Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 251346
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
945 AM EDT FRI JUL 25 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...STORMY CONDITIONS WILL OCCUR OFF AND ON ACROSS THE GREAT
LAKES DURING THE WEEKEND AS TWO LOW PRESSURE SYSTEMS MOVE THROUGH
THE REGION. THE FIRST WILL REACH THE MINNESOTA ARROWHEAD TONIGHT...
AVERAGING 29.80 INCHES...AND WILL PULL A WARM FRONT RAPIDLY THROUGH
THE GREAT LAKES SATURDAY. THIS WILL BE FOLLOWED BY A STRONGER AND
FASTER MOVING SYSTEM SUNDAY THAT WILL BRING ANOTHER A NEW SURGE OF
COLD AIR OVER THE REGION BY MONDAY.

LCZ460-252000-
LAKE ST CLAIR-
945 AM EDT FRI JUL 25 2014

.REST OF TODAY...SOUTHWEST WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS LATE. PARTLY SUNNY. WAVES 2 FEET OR LESS.
.TONIGHT...SOUTH WINDS 10 TO 15 KNOTS...BECOMING SOUTHWEST 5 TO
10 KNOTS BY MIDNIGHT. PARTLY CLOUDY THROUGH MIDNIGHT...THEN MOSTLY
CLOUDY WITH A CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT.
WAVES 2 FEET OR LESS.
.SATURDAY...SOUTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY WITH A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
.SATURDAY NIGHT...WEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
2 FEET OR LESS.
.SUNDAY...SOUTHWEST WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS THROUGH MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH EARLY AFTERNOON...THEN SHOWERS AND THUNDERSTORMS LIKELY BY
MID AFTERNOON. PARTLY SUNNY THROUGH EARLY AFTERNOON...BECOMING
MOSTLY CLOUDY. WAVES 2 FEET OR LESS.
.MONDAY...NORTH WINDS 15 TO 20 KNOTS. SHOWERS AND THUNDERSTORMS
LIKELY. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.TUESDAY...WEST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.

$$

SF

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





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