Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 181941
GLFLH

OPEN LAKE FORECAST FOR LAKE HURON
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
341 PM 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...CENTERED OVER THE
EASTERN GREAT LAKES WILL DEPART THE REGION TONIGHT. LOW
PRESSURE...29.60 INCHES...OVER MINNESOTA WILL THEN WEAKEN AS IT
PUSHES FROM LAKE SUPERIOR INTO SOUTHERN ONTARIO THROUGH WEDNESDAY. A
SECOND LOW PRESSURE SYSTEM...29.60 INCHES...OVER THE CENTRAL PLAINS
ON WEDNESDAY WILL MOVE INTO THE LOWER PENINSULA ON THURSDAY. HIGH
PRESSURE...30.30 INCHES...WILL THEN SETTLE BACK IN ACROSS MICHIGAN
BY SATURDAY.

LHZ361-362-190815-
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
341 PM EDT TUE APR 18 2017

...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY
EVENING...

.TONIGHT...SOUTHEAST WINDS 15 TO 20 KNOTS BECOMING SOUTH 20 TO
25 KNOTS AFTER MIDNIGHT...THEN DECREASING TO 15 TO 20 KNOTS EARLY
IN THE MORNING. WAVES 5 TO 7 FEET. WAVES OCCASIONALLY AROUND
10 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 15 KNOTS. WAVES 4 TO 6 FEET
SUBSIDING TO 2 TO 4 FEET LATE IN THE AFTERNOON. WAVES
OCCASIONALLY AROUND 8 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 15 KNOTS VEERING TO THE
NORTH IN THE LATE EVENING AND EARLY MORNING...THEN BECOMING
NORTHEAST 15 TO 20 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY AFTER
MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 5 TO 7 FEET AFTER
MIDNIGHT. WAVES OCCASIONALLY AROUND 10 FEET.
.THURSDAY...EAST WINDS 20 TO 25 KNOTS INCREASING TO 30 KNOTS IN
THE LATE MORNING AND EARLY AFTERNOON...THEN DECREASING TO 20 TO
25 KNOTS EARLY IN THE AFTERNOON. GUSTS TO 35 KNOT GALES. SHOWERS.
WAVES 8 TO 12 FEET. WAVES OCCASIONALLY AROUND 15 FEET.
.THURSDAY NIGHT...EAST WINDS 15 TO 20 KNOTS WITH GUSTS TO
30 KNOTS DECREASING TO 10 TO 15 KNOTS IN THE LATE EVENING AND
EARLY MORNING...THEN VEERING TO THE WEST AFTER MIDNIGHT. SHOWERS
LIKELY IN THE EVENING...THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
A CHANCE OF SNOW SHOWERS EARLY IN THE MORNING. WAVES 5 TO 7 FEET.
WAVES OCCASIONALLY AROUND 10 FEET.
.FRIDAY...WEST WINDS 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS
BECOMING NORTHWEST 10 TO 15 KNOTS LATE IN THE EVENING. A CHANCE
OF SNOW SHOWERS IN THE MORNING. A CHANCE OF SHOWERS UNTIL LATE
AFTERNOON. WAVES 4 TO 6 FEET SUBSIDING TO 2 TO 4 FEET LATE IN THE
EVENING. WAVES OCCASIONALLY AROUND 8 FEET.
.SATURDAY...NORTH WINDS 10 TO 15 KNOTS DECREASING TO 5 TO
10 KNOTS UNTIL EARLY EVENING...THEN BECOMING LIGHT AND VARIABLE
IN THE LATE EVENING AND EARLY MORNING. WAVES 1 TO 3 FEET.
.SUNDAY...WEST WINDS 5 TO 10 KNOTS BECOMING NORTHWEST 10 TO
15 KNOTS UNTIL EARLY MORNING. WAVES 2 FEET OR LESS BUILDING TO
3 TO 5 FEET IN THE LATE EVENING AND EARLY MORNING.


$$

LHZ363-462-190815-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
341 PM EDT TUE APR 18 2017

.TONIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS IN THE LATE EVENING AND OVERNIGHT. A CHANCE OF SHOWERS
EARLY IN THE MORNING. WAVES 2 TO 4 FEET BUILDING TO 4 TO 6 FEET
IN THE LATE EVENING AND OVERNIGHT. WAVES OCCASIONALLY AROUND
8 FEET.
.WEDNESDAY...SOUTH WINDS 15 TO 20 KNOTS DECREASING TO 10 TO
15 KNOTS IN THE LATE MORNING AND EARLY AFTERNOON...THEN BACKING
TO THE SOUTH 10 TO 15 KNOTS LATE IN THE AFTERNOON. A CHANCE OF
SHOWERS UNTIL LATE AFTERNOON. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO
3 FEET LATE IN THE AFTERNOON.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 15 KNOTS BECOMING NORTHEAST
15 TO 20 KNOTS AFTER MIDNIGHT. SHOWERS AND THUNDERSTORMS LIKELY
AFTER MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET AFTER
MIDNIGHT.
.THURSDAY...EAST WINDS 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS
INCREASING TO 20 TO 25 KNOTS WITH GUSTS TO 30 KNOTS IN THE LATE
MORNING AND EARLY AFTERNOON...THEN DECREASING TO 15 TO 20 KNOTS
EARLY IN THE AFTERNOON. SHOWERS WITH THUNDERSTORMS LIKELY. WAVES
6 TO 9 FEET. WAVES OCCASIONALLY AROUND 12 FEET.
.THURSDAY NIGHT...EAST WINDS 10 TO 15 KNOTS BECOMING SOUTHEAST
5 TO 10 KNOTS IN THE LATE EVENING AND EARLY MORNING...THEN
BECOMING WEST 10 TO 15 KNOTS AFTER MIDNIGHT. SHOWERS AND
THUNDERSTORMS LIKELY EARLY IN THE EVENING...THEN A CHANCE OF
SHOWERS IN THE LATE EVENING AND EARLY MORNING. WAVES 4 TO 6 FEET.
WAVES OCCASIONALLY AROUND 8 FEET.
.FRIDAY...WEST WINDS 15 TO 20 KNOTS BECOMING NORTHWEST 10 TO
15 KNOTS LATE IN THE AFTERNOON. WAVES 4 TO 6 FEET SUBSIDING TO
2 TO 4 FEET LATE IN THE EVENING. WAVES OCCASIONALLY AROUND
8 FEET.
.SATURDAY...NORTH WINDS 10 TO 15 KNOTS BECOMING LIGHT AND
VARIABLE. WAVES 1 TO 3 FEET.
.SUNDAY...NORTH WINDS 5 TO 10 KNOTS BACKING TO THE WEST IN THE
LATE MORNING AND EARLY AFTERNOON...THEN BECOMING WEST 5 TO
10 KNOTS UNTIL EARLY MORNING. WAVES 2 FEET OR LESS BUILDING TO
2 TO 4 FEET IN THE LATE EVENING AND EARLY MORNING.


$$

LHZ463-464-190815-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
341 PM EDT TUE APR 18 2017

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


$$

LHZ461-190815-
MAFOR 1821/
HURON NORTH 11310 11320 12430 11420 11510 11610 11710. A
CHANCE OF SHOWERS OVERNIGHT. 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 1 TO 3 FEET. OCCASIONAL WAVE HEIGHT AROUND 10
FEET WEDNESDAY. 220204.

HURON SOUTH 11310 11320 14420 11510 11600. A CHANCE OF
SHOWERS OVERNIGHT AND WEDNESDAY. WAVES 1 TO 3 FEET BUILDING TO 3
TO 5 FEET TONIGHT. WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 4 FEET
WEDNESDAY. 220103.

$$

SC

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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