Great Lakes Forecast
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FZUS63 KDTX 210846
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
346 AM EST TUE FEB 21 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...29.30 INCHES...OVER NORTHERN ONTARIO WILL
DEEPEN TO 29.10 INCHES AS IT LIFTS INTO HUDSON BAY BY THIS EVENING.
THIS LOW WILL DRAG A WEAKENING SURFACE FRONT...29.90 INCHES...ACROSS
LAKE HURON THIS AFTERNOON AND INTO LAKE ERIE THIS EVENING. A WEAK
LOW PRESSURE SYSTEM IS THEN FORECAST TO TRACK FROM NORTHERN
MINNESOTA LATE TONIGHT INTO NORTHERN LAKE SUPERIOR ON WEDNESDAY.
DEEPENING LOW PRESSURE IS THEN FORECAST TO LIFT INTO THE REGION FROM
THE SOUTHWEST ON FRIDAY.

LCZ460-212115-
LAKE ST CLAIR-
346 AM EST TUE FEB 21 2017

.TODAY...SOUTH WINDS 10 TO 15 KNOTS...BECOMING SOUTHWEST 5 TO
10 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY CLOUDY WITH A
CHANCE OF LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.TONIGHT...SOUTH WINDS 5 TO 10 KNOTS EARLY IN THE EVENING...BECOMING
LIGHT AND VARIABLE, THEN...BECOMING SOUTH 5 TO 10 KNOTS AFTER
MIDNIGHT. MOSTLY CLOUDY. A CHANCE OF LIGHT SHOWERS UNTIL EARLY
MORNING. A CHANCE OF DRIZZLE WITH AREAS OF FOG AFTER MIDNIGHT. WAVES
NEARLY CALM.
.WEDNESDAY...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY IN THE MORNING
THEN CLEARING. A CHANCE OF DRIZZLE EARLY IN THE MORNING. AREAS OF
FOG IN THE MORNING. WAVES 2 FEET OR LESS.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY.
WAVES 2 FEET OR LESS.
.THURSDAY...WEST WINDS 5 TO 10 KNOTS...VEERING TO THE NORTHEAST IN
THE EVENING. PARTLY SUNNY...BECOMING MOSTLY CLOUDY. A CHANCE OF
LIGHT RAIN AND THUNDERSTORMS IN THE EVENING. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTHWEST WINDS 10 TO 15 KNOTS. RAIN WITH THUNDERSTORMS
LIKELY. WAVES 2 FEET OR LESS.
.SATURDAY...NORTHWEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY WITH RAIN,
POSSIBLE SNOW AND THUNDERSTORMS LIKELY. 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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