Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 201940
GLFLH

OPEN LAKE FORECAST FOR LAKE HURON
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
340 PM EDT MON MAR 20 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...A COLD FRONT IS EXPECTED TO PUSH THROUGH THE GREAT LAKES
FROM NORTH TO SOUTH THROUGHOUT TUESDAY...SWIFTLY CHANGING WIND
DIRECTION FROM SOUTHERLY TO NORTHERLY BY EARLY TUESDAY MORNING.
WINDS ARE EXPECTED TO REMAIN FROM THE WEST TO NORTHWEST THROUGHOUT
TUESDAY AS CONDITIONS START TO DRY OUT. HIGH PRESSURE...30.70
INCHES...WILL PUSH SOUTHEAST FROM MANITOBA ON TUESDAY...AND WILL
SITUATE OVER THE GREAT LAKES BY LATE WEDNESDAY...WEAKENING SLIGHTLY
TO 30.60 INCHES. PRESSURE WILL GRADUALLY DIMINISH DOWN TO 30.30
INCHES LATE THURSDAY...BEFORE LOW PRESSURE BRINGS THE NEXT CHANCE
FOR PRECIPITATION EARLY FRIDAY.

LHZ361-210815-
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
340 PM EDT MON MAR 20 2017

...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY
EVENING...

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


$$

LHZ362-363-210815-
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-
340 PM EDT MON MAR 20 2017

...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE
TUESDAY NIGHT...

.TONIGHT...NORTHEAST WINDS 5 TO 10 KNOTS BACKING TO THE NORTH
LATE IN THE EVENING...THEN BECOMING NORTHWEST 10 TO 15 KNOTS
AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
.TUESDAY...WEST WINDS 5 TO 10 KNOTS BECOMING NORTHWEST 20 TO
25 KNOTS WITH GUSTS TO 35 KNOT GALES. WAVES 1 TO 3 FEET BUILDING
TO 5 TO 7 FEET IN THE AFTERNOON. WAVES OCCASIONALLY AROUND
10 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS TO 30 KNOTS WITH GUSTS TO
40 KNOT GALES BECOMING NORTH 20 TO 25 KNOTS WITH GUSTS TO 35 KNOT
GALES IN THE LATE EVENING AND OVERNIGHT. WAVES 8 TO 12 FEET.
WAVES OCCASIONALLY AROUND 15 FEET.
.WEDNESDAY...NORTH WINDS 15 TO 25 KNOTS DECREASING TO 10 TO 15
KNOTS IN THE LATE MORNING AND AFTERNOON. WAVES 4 TO 6 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 15 KNOTS DECREASING TO
5 TO 10 KNOTS IN THE LATE EVENING AND OVERNIGHT. WAVES 1 TO
3 FEET. WAVES OCCASIONALLY AROUND 8 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 10 KNOTS BECOMING SOUTH 10 TO
15 KNOTS LATE IN THE MORNING...THEN INCREASING TO 15 TO 20 KNOTS
LATE IN THE AFTERNOON DECREASING TO 10 TO 15 KNOTS LATE IN THE
EVENING. A CHANCE OF RAIN LATE IN THE EVENING. SNOW AND RAIN
AFTER MIDNIGHT. WAVES 2 FEET OR LESS BUILDING TO 3 TO 5 FEET.
.FRIDAY...SOUTH WINDS 10 TO 15 KNOTS DECREASING TO 5 TO 10 KNOTS
IN THE LATE MORNING AND EARLY AFTERNOON...THEN VEERING TO THE
WEST EARLY IN THE EVENING VEERING TO THE NORTHEAST IN THE LATE
EVENING AND EARLY MORNING. SNOW EARLY IN THE MORNING. RAIN. WAVES
3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET UNTIL EARLY EVENING...THEN
BUILDING TO 2 TO 4 FEET IN THE LATE EVENING AND EARLY MORNING.
.SATURDAY...NORTHEAST WINDS 15 TO 20 KNOTS INCREASING TO 20 TO
25 KNOTS UNTIL EARLY EVENING...THEN BECOMING EAST 15 TO 20 KNOTS
IN THE LATE EVENING AND EARLY MORNING. GUSTS TO 35 KNOT GALES.
RAIN WITH SNOW LIKELY EARLY IN THE MORNING...THEN A CHANCE OF
RAIN. A CHANCE OF SNOW. WAVES 5 TO 7 FEET BUILDING TO 6 TO 9 FEET
UNTIL EARLY MORNING. WAVES OCCASIONALLY AROUND 12 FEET.


$$

LHZ462>464-210815-
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-
340 PM EDT MON MAR 20 2017

...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE
TUESDAY NIGHT...

.TONIGHT...LIGHT AND VARIABLE WINDS BECOMING NORTH 5 TO 10 KNOTS
AFTER MIDNIGHT. SCATTERED SHOWERS IN THE EVENING. WAVES 2 FEET OR
LESS.
.TUESDAY...WEST WINDS 5 TO 10 KNOTS BECOMING NORTHWEST 10 TO
15 KNOTS WITH GUSTS TO 30 KNOTS LATE IN THE AFTERNOON. WAVES 1 TO
3 FEET BUILDING TO 3 TO 5 FEET LATE IN THE AFTERNOON.
.TUESDAY NIGHT...NORTHWEST WINDS TO 30 KNOTS BECOMING NORTH 20 TO
25 KNOTS AFTER MIDNIGHT. GUSTS TO 40 KNOT GALES. A CHANCE OF SNOW
SHOWERS. WAVES 8 TO 12 FEET. WAVES OCCASIONALLY AROUND 15 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 25 KNOTS WITH GUSTS TO 30 KNOTS
DECREASING TO 10 TO 15 KNOTS. A CHANCE OF SNOW SHOWERS UNTIL LATE
AFTERNOON. WAVES 5 TO 7 FEET. WAVES OCCASIONALLY AROUND 10 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 10 KNOTS UNTIL EARLY MORNING
BECOMING LIGHT AND VARIABLE. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET IN THE LATE EVENING AND OVERNIGHT.
.THURSDAY...SOUTH WINDS 5 TO 10 KNOTS INCREASING TO 10 TO
15 KNOTS. SNOW AND RAIN AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
.FRIDAY...SOUTH WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST 5 TO
10 KNOTS UNTIL EARLY EVENING...THEN VEERING TO THE NORTHEAST IN
THE LATE EVENING AND EARLY MORNING. SNOW EARLY IN THE MORNING.
RAIN. WAVES 1 TO 3 FEET.
.SATURDAY...NORTHEAST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO
20 KNOTS WITH GUSTS TO 30 KNOTS. RAIN UNTIL AFTERNOON. A CHANCE
OF SNOW. A CHANCE OF RAIN UNTIL EARLY MORNING. WAVES 3 TO 5 FEET
BUILDING TO 6 TO 9 FEET UNTIL EARLY MORNING. WAVES OCCASIONALLY
AROUND 12 FEET.


$$

LHZ461-210815-
MAFOR 2021/
HURON NORTH...GALE WARNING IN EFFECT...12600 13710 11610
12720. WAVES 2 FEET OR LESS TONIGHT. WAVES 2 FEET OR LESS
BUILDING TO 4 TO 6 FEET. OCCASIONAL WAVE HEIGHT AROUND 8 FEET
TUESDAY. 220102.

HURON SOUTH...GALE WARNING IN EFFECT...11700 11800 11700
12710 12600 11720. WAVES 2 FEET OR LESS TONIGHT. WAVES 2 TO 4
FEET TUESDAY. 220101.

$$

SF

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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