Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS63 KDTX 191951
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
347 PM EDT FRI SEP 19 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...AVERAGING 29.40 INCHES...WILL MOVE ACROSS
SOUTH-CENTRAL ONTARIO TONIGHT INTO SATURDAY. MEANWHILE...HIGH
PRESSURE...AVERAGING 30.40 INCHES...WILL MOVE NORTHEASTWARD FROM THE
GULF OF MAINE. THIS WILL MAINTAIN BREEZY SOUTHWESTERLY FLOW OVER THE
WATERS TONIGHT INTO SATURDAY. A COLD FRONT WILL PUSH THROUGH THE
LOCAL REGION SATURDAY NIGHT AND SUNDAY...USHERING IN A COOLER
AIRMASS.

LCZ460-200800-
LAKE ST CLAIR-
347 PM EDT FRI SEP 19 2014

.TONIGHT...SOUTH WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO 15 KNOTS
LATE. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.SATURDAY...SOUTHWEST WINDS 15 TO 20 KNOTS. A CHANCE OF SHOWERS BY
LATE MORNING. A CHANCE OF THUNDERSTORMS BY MID AFTERNOON. WAVES 1 TO
3 FEET.
.SATURDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS...INCREASING TO
15 TO 20 KNOTS BY MIDNIGHT...THEN DIMINISHING TO 10 TO 15 KNOTS
LATE. SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS THROUGH
MIDNIGHT...THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. CLOUDY. WAVES
2 FEET OR LESS.
.SUNDAY...WEST WINDS 10 TO 15 KNOTS. PARTLY SUNNY WITH SHOWERS
LIKELY AND A CHANCE OF THUNDERSTORMS. WAVES 2 FEET OR LESS.
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. WAVES
2 FEET OR LESS.
.MONDAY...NORTHWEST WINDS 10 TO 15 KNOTS...BECOMING WEST 5 TO
10 KNOTS BY MID AFTERNOON. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.TUESDAY...NORTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET
OR LESS.
.WEDNESDAY...EAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.

$$

DT

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





USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.