Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 161407
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
ISSUED BY NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1007 AM EDT THU MAR 16 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...A RIDGE OF HIGH PRESSURE...AVERAGING 30.40 INCHES...
WILL EXPAND ACROS THE GREAT LAKES REGION THROUGH TONIGHT. THIS HIGH
WILL EXIT TO THE EAST BY EARLY FRIDAY. THE NEXT LOW PRESSURE
SYSTEM...29.90 INCHES...WILL THEN LIFT THROUGH THE REGION FRIDAY
NIGHT AND SATURDAY. HIGH PRESSURE FILLS IN BEHIND THIS LOW THROUGH
THE LATTER HALF OF THE WEEKEND.

LCZ460-162015-
LAKE ST CLAIR-
1007 AM EDT THU MAR 16 2017

.REST OF TODAY...WEST WINDS 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES
2 FEET OR LESS.
.TONIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS. CLEAR THROUGH MIDNIGHT...
BECOMING PARTLY CLOUDY OVERNIGHT. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTH WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO 15 KNOTS
BY LATE MORNING. LIGHT SNOW LIKELY THROUGH EARLY AFTERNOON, THEN
LIGHT SNOW BY MID AFTERNOON. LIGHT RAIN LATE. WAVES 2 FEET OR LESS.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 15 KNOTS...BECOMING SOUTHWEST 5 TO
10 KNOTS BY MIDNIGHT. MOSTLY CLOUDY. LIGHT RAIN LIKELY THROUGH
MIDNIGHT. LIGHT SNOW LIKELY BY MIDNIGHT,...THEN A CHANCE OF LIGHT
RAIN AND SNOW AFTER MIDNIGHT. WAVES 2 FEET OR LESS.
.SATURDAY...WEST WINDS 5 TO 10 KNOTS...BECOMING NORTHWEST 10 TO
15 KNOTS BY MID AFTERNOON, THEN...DIMINISHING TO 5 TO 10 KNOTS
THROUGH MIDNIGHT. MOSTLY CLOUDY...BECOMING PARTLY CLOUDY. A CHANCE
OF LIGHT SNOW EARLY,...THEN A CHANCE OF LIGHT RAIN AND SNOW BY LATE
MORNING. WAVES 2 FEET OR LESS.
.SUNDAY...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.
.MONDAY...WEST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH RAIN LIKELY.
WAVES 2 FEET OR LESS.

$$

MWS/WFO GRR

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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