Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
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 201334
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
933 AM EDT WED AUG 20 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...A SLOW MOVING AND WEAKENING LOW PRESSURE SYSTEM...OF
29.60 INCHES...WILL DESCEND THROUGH THE GREAT LAKES TODAY. A SECOND
WEAK SURFACE LOW OF 29.80 INCHES WILL THEN PUSH RAPIDLY INTO THE
NORTHERN GREAT LAKES FRIDAY ON THE HEELS OF THE FIRST ONE. A GENERAL
SURFACE TROUGH WILL PERSIST OVER THE GREAT LAKES THROUGH THE WEEKEND.

LCZ460-202000-
LAKE ST CLAIR-
933 AM EDT WED AUG 20 2014

.REST OF TODAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTHWEST 5 TO
10 KNOTS BY LATE MORNING. PATCHY FOG LATE IN THE MORNING. A CHANCE
OF THUNDERSTORMS BY LATE MORNING. LIGHT SHOWERS LIKELY.
THUNDERSTORMS LIKELY BY MID AFTERNOON. WAVES 2 FEET OR LESS.
.TONIGHT...LIGHT AND VARIABLE WINDS. A CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING. PARTLY CLOUDY. WAVES NEARLY
CALM.
.THURSDAY...LIGHT AND VARIABLE WINDS. PARTLY SUNNY. WAVES NEARLY
CALM.
.THURSDAY NIGHT...LIGHT AND VARIABLE WINDS. MOSTLY CLOUDY WITH A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES NEARLY CALM.
.FRIDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH A CHANCE
OF SHOWERS AND THUNDERSTORMS THROUGH EARLY AFTERNOON...THEN PARTLY
CLOUDY BY MID AFTERNOON. WAVES 2 FEET OR LESS.
.SATURDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
2 FEET OR LESS.
.SUNDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. PARTLY CLOUDY. WAVES 2 FEET OR LESS.

$$

JVC

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.