Great Lakes Forecast
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FZUS63 KDTX 181343
GLFLH

OPEN LAKE FORECAST FOR LAKE HURON
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
939 AM EDT TUE APR 18 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OFF SHORE ON LAKE HURON

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...HIGH PRESSURE AVERAGING 30.10 INCHES...WILL REMAIN IN
CENTERED ACROSS THE GREAT LAKES TODAY. LOW PRESSURE...29.60
INCHES...WILL THEN PUSH EAST FROM THE NORTH CENTRAL PLAINS INTO
SOUTHERN ONTARIO THROUGH WEDNESDAY. A SECOND LOW PRESSURE
SYSTEM...29.60 INCHES...IS THEN EXPECTED TO MOVE IN FROM THE CENTRAL
PLAINS INTO THE LOWER PENINSULA WEDNESDAY INTO THURSDAY. HIGH
PRESSURE...30.40 INCHES...WILL THEN SETTLE BACK IN ACROSS MICHIGAN
BY SATURDAY.

LHZ361-182000-
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
939 AM EDT TUE APR 18 2017

.REST OF TODAY...SOUTHEAST WINDS 15 TO 20 KNOTS BECOMING EAST
20 TO 25 KNOTS WITH GUSTS TO 30 KNOTS LATE IN THE AFTERNOON.
WAVES 3 TO 5 FEET BUILDING TO 5 TO 7 FEET LATE IN THE AFTERNOON.
WAVES OCCASIONALLY AROUND 10 FEET.
.TONIGHT...SOUTHEAST WINDS 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS
BECOMING SOUTH 10 TO 15 KNOTS EARLY IN THE MORNING. SHOWERS
LIKELY EARLY IN THE MORNING. WAVES 5 TO 7 FEET. WAVES
OCCASIONALLY AROUND 10 FEET.
.WEDNESDAY...SOUTH WINDS 5 TO 10 KNOTS BECOMING WEST 10 TO
15 KNOTS IN THE LATE MORNING AND AFTERNOON. SHOWERS LIKELY EARLY
IN THE MORNING. WAVES 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 10 KNOTS BECOMING
NORTHEAST 10 TO 15 KNOTS IN THE LATE EVENING AND EARLY MORNING...
THEN BECOMING EAST 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS AFTER
MIDNIGHT. SHOWERS LIKELY AFTER MIDNIGHT. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET AFTER MIDNIGHT.
.THURSDAY...EAST WINDS 20 TO 25 KNOTS WITH GUSTS TO 30 KNOTS
BECOMING NORTHEAST 10 TO 15 KNOTS. SHOWERS. SNOW SHOWERS LIKELY
LATE IN THE EVENING...THEN A CHANCE OF RAIN AND SNOW SHOWERS
AFTER MIDNIGHT. WAVES 5 TO 7 FEET. WAVES OCCASIONALLY AROUND
10 FEET.
.FRIDAY...NORTH WINDS 15 TO 20 KNOTS BECOMING NORTHWEST 5 TO
10 KNOTS. A CHANCE OF RAIN AND SNOW SHOWERS EARLY IN THE MORNING.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET UNTIL EARLY MORNING.
.SATURDAY...NORTH WINDS 5 TO 10 KNOTS EARLY IN THE MORNING
BECOMING LIGHT AND VARIABLE. WAVES 2 FEET OR LESS.


$$

LHZ362-363-182000-
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
939 AM EDT TUE APR 18 2017

.REST OF TODAY...SOUTHEAST WINDS 10 TO 15 KNOTS. WAVES 1 TO
3 FEET BUILDING TO 3 TO 5 FEET IN THE AFTERNOON.
.TONIGHT...EAST WINDS 10 TO 15 KNOTS BECOMING SOUTHEAST 15 TO
20 KNOTS LATE IN THE EVENING...THEN BECOMING SOUTH 20 TO 25 KNOTS
WITH GUSTS TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT. WAVES 4 TO 6 FEET BUILDING TO 6 TO 9 FEET EARLY IN THE
MORNING. WAVES OCCASIONALLY AROUND 12 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 15 KNOTS VEERING TO THE NORTHWEST
EARLY IN THE AFTERNOON. A CHANCE OF SHOWERS UNTIL LATE AFTERNOON.
WAVES 4 TO 6 FEET. WAVES OCCASIONALLY AROUND 8 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 15 KNOTS BECOMING NORTHEAST
15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS AFTER MIDNIGHT. SHOWERS
LIKELY AFTER MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 4 TO 6 FEET
AFTER MIDNIGHT. WAVES OCCASIONALLY AROUND 8 FEET.
.THURSDAY...EAST WINDS 20 TO 25 KNOTS WITH GUSTS TO 35 KNOT GALES
BECOMING NORTHEAST 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS LATE IN
THE AFTERNOON...THEN BACKING TO THE NORTH LATE IN THE EVENING.
SHOWERS...THEN A CHANCE OF SHOWERS EARLY IN THE EVENING. WAVES
8 TO 12 FEET SUBSIDING TO 4 TO 6 FEET LATE IN THE EVENING. WAVES
OCCASIONALLY AROUND 15 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS
DECREASING TO 10 TO 15 KNOTS UNTIL EARLY MORNING. A CHANCE OF
SNOW SHOWERS EARLY IN THE MORNING. A CHANCE OF SHOWERS EARLY IN
THE MORNING. WAVES 3 TO 5 FEET.
.SATURDAY...NORTH WINDS 10 TO 15 KNOTS DECREASING TO 5 TO
10 KNOTS. WAVES 1 TO 3 FEET.


$$

LHZ462>464-182000-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
939 AM EDT TUE APR 18 2017

.REST OF TODAY...SOUTHEAST WINDS 5 TO 10 KNOTS. WAVES 1 TO
3 FEET.
.TONIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS IN THE LATE EVENING AND OVERNIGHT. A CHANCE OF SHOWERS
AFTER MIDNIGHT. A CHANCE OF THUNDERSTORMS EARLY IN THE MORNING.
WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET IN THE LATE EVENING AND
OVERNIGHT.
.WEDNESDAY...SOUTH WINDS 15 TO 20 KNOTS DECREASING TO 10 TO
15 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON...THEN BECOMING
SOUTHWEST 5 TO 10 KNOTS EARLY IN THE AFTERNOON. SHOWERS LIKELY IN
THE MORNING. A CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS IN
THE AFTERNOON. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET EARLY
IN THE AFTERNOON.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 15 KNOTS DECREASING TO 5 TO
10 KNOTS IN THE LATE EVENING AND EARLY MORNING...THEN BECOMING
NORTHEAST 10 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. RAIN SHOWERS AND THUNDERSTORMS
LIKELY AFTER MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET
AFTER MIDNIGHT.
.THURSDAY...EAST WINDS 10 TO 15 KNOTS VEERING TO THE SOUTHEAST
LATE IN THE MORNING...THEN BECOMING SOUTHWEST 5 TO 10 KNOTS LATE
IN THE AFTERNOON BECOMING WEST 10 TO 15 KNOTS LATE IN THE
EVENING. SHOWERS WITH THUNDERSTORMS LIKELY...THEN A CHANCE OF
SHOWERS EARLY IN THE EVENING. WAVES 3 TO 5 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 20 KNOTS DECREASING TO 10 TO
15 KNOTS UNTIL EARLY MORNING. WAVES 3 TO 5 FEET.
.SATURDAY...NORTH WINDS 10 TO 15 KNOTS DECREASING TO 5 TO
10 KNOTS UNTIL EARLY MORNING. WAVES 1 TO 3 FEET.


$$

LHZ461-182000-
MAFOR 1815/
HURON NORTH 11310 13320 11430 11436 11426 11510. WAVES 2 TO
4 FEET THIS AFTERNOON. WAVES 3 TO 5 FEET BUILDING TO 5 TO 7 FEET.
OCCASIONAL WAVE HEIGHT AROUND 10 FEET TONIGHT. WAVES 5 TO 7 FEET
SUBSIDING TO 3 TO 5 FEET. OCCASIONAL WAVE HEIGHT AROUND 10 FEET
WEDNESDAY MORNING. 220203.

HURON SOUTH 12300 12310 11320 13420. A CHANCE OF SHOWERS
OVERNIGHT AND WEDNESDAY MORNING. WAVES 2 FEET OR LESS THIS
AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET TONIGHT.
WAVES 3 TO 5 FEET WEDNESDAY MORNING. 220102.

$$

DG

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/DTX/GLFTABLE (ALL LOWER CASE)

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



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