Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 271716 AAA
GLFSC

LAKE ST CLAIR FORECAST...UPDATED
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
115 PM EDT WED MAY 27 2015

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 OF 29.60 INCHES WILL SHIFT INTO QUEBEC
LATE TODAY WITH A SURFACE TROUGH SAGGING SOUTHEAST THROUGH THE AREA
IN ITS WAKE. HIGH PRESSURE OF 30.10 INCHES WILL THEN BUILD INTO THE
REGION TONIGHT INTO THURSDAY WITH THE NEXT AREA OF LOW PRESSURE
ENCROACHING ON THE GREAT LAKES BY FRIDAY.

LCZ460-272000-
LAKE ST CLAIR-
115 PM EDT WED MAY 27 2015

...SEVERE THUNDERSTORM WATCH 228 IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

.REST OF TODAY...SOUTHWEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY WITH
SHOWERS AND THUNDERSTORMS LIKELY. SOME THUNDERSTORMS MAY BE SEVERE
WITH DAMAGING WINDS AND LARGE HAIL. WAVES 1 TO 3 FEET.
.TONIGHT...WEST WINDS 10 TO 15 KNOTS...BECOMING LIGHT AND VARIABLE
OVERNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.THURSDAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTHEAST 5 TO
10 KNOTS BY LATE MORNING...THEN BECOMING SOUTH 10 TO 15 KNOTS LATE.
MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.THURSDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
2 FEET OR LESS.
.FRIDAY...SOUTH WINDS 10 TO 15 KNOTS. PARTLY SUNNY...THEN PARTLY
CLOUDY WITH A CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT.
WAVES 2 FEET OR LESS.
.SATURDAY...NORTH WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY WITH SHOWERS
AND THUNDERSTORMS LIKELY. WAVES 2 FEET OR LESS.
.SUNDAY...NORTHEAST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.

$$

DG

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



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