Great Lakes Forecast
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FZUS63 KDTX 121428
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
928 AM EST Tue Dec 12 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 low pressure clipper system will deepen as it races to
the New England states by this afternoon. A weak surface ridge will
bring a brief increase in pressure up to 29.90 inches this afternoon
before a second clipper system, averaging 29.60 inches, drops south
of Michigan Wednesday into Thursday.

LHZ361-122115-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
928 AM EST Tue Dec 12 2017

...GALE WARNING IN EFFECT THROUGH THIS EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...Northwest winds to 30 knots decreasing to 20 to
25 knots in the afternoon. Gusts to 35 knot gales. Heavy freezing
spray. Scattered snow showers. Waves 8 to 12 feet. Waves
occasionally around 15 feet.
.TONIGHT...North winds 20 to 25 knots with gusts to 30 knots
decreasing to 10 to 15 knots. Freezing spray early in the
evening. Scattered snow showers. Waves 4 to 6 feet.
.WEDNESDAY...North winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. Scattered snow
showers early in the morning. Waves 2 to 4 feet subsiding to
2 feet or less in the late morning and afternoon. Waves
occasionally around 8 feet.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. Waves 2 to 4 feet.
.THURSDAY...North winds 10 to 15 knots becoming west 5 to
10 knots. A chance of snow showers late in the evening. Waves
1 to 3 feet.
.FRIDAY...Southwest winds 5 to 10 knots becoming west 10 to
15 knots early in the evening...then veering to the northwest in
the late evening and early morning. A chance of snow showers.
Waves 1 to 3 feet building to 2 to 4 feet in the late evening and
early morning.
.SATURDAY...Northwest winds 10 to 15 knots backing to the west
early in the evening...then becoming south 5 to 10 knots in the
late evening and early morning. A chance of snow showers. Waves
2 to 4 feet subsiding to 1 to 3 feet.


$$

LHZ362-363-122115-
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-
928 AM EST Tue Dec 12 2017

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...Northwest at 35 knot gales with gusts to 45 knot
gales. Freezing spray. Periods of snow showers. Waves 14 to
18 feet. Waves occasionally around 23 feet.
.TONIGHT...Northwest at 35 knot gales with gusts to 45 knot gales
decreasing to 20 to 25 knots with gusts to 35 knot gales.
Freezing spray. Numerous snow showers. Waves 12 to 16 feet
subsiding to 8 to 12 feet early in the morning. Waves
occasionally around 20 feet.
.WEDNESDAY...North winds 15 to 20 knots decreasing to 10 to
15 knots in the late morning and early afternoon...then backing
to the northwest early in the afternoon. Freezing spray early in
the morning. Numerous snow showers early in the morning. Waves
6 to 9 feet subsiding to 4 to 6 feet in the late morning and
afternoon. Waves occasionally around 12 feet.
.WEDNESDAY NIGHT...North winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. Waves 2 to 4 feet
building to 4 to 6 feet after midnight. Waves occasionally around
8 feet.
.THURSDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet late in the
evening.
.FRIDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots with gusts to 30 knots. A chance of snow showers. Waves
2 to 4 feet building to 4 to 6 feet. Waves occasionally around
8 feet.
.SATURDAY...Northwest winds 15 to 20 knots with gusts to 30 knots
becoming west 10 to 15 knots until early morning. A chance of
snow showers early in the morning. A chance of snow showers.
Waves 4 to 6 feet.


$$

LHZ462>464-122115-
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-
928 AM EST Tue Dec 12 2017

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...Northwest at 35 knot gales with gusts to 45 knot
gales. Freezing spray. Periods of snow showers. Waves 14 to
18 feet. Waves occasionally around 23 feet.
.TONIGHT...Northwest at 35 knot gales decreasing to 20 to
25 knots. Gusts to 40 knot gales. Freezing spray. Periods of snow
showers until early morning. Numerous snow showers early in the
morning. Snow may be heavy at times in the evening. Waves 12 to
16 feet. Waves occasionally around 20 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots with gusts to
30 knots becoming west 10 to 15 knots in the late morning and
afternoon. Freezing spray early in the morning. Numerous snow
showers early in the morning...then a chance of snow in the late
morning and afternoon. Snow may be heavy at times early in the
morning. Waves 6 to 9 feet subsiding to 4 to 6 feet early in the
afternoon. Waves occasionally around 12 feet.
.WEDNESDAY NIGHT...North winds 10 to 15 knots increasing to 15 to
20 knots after midnight. A chance of snow. Waves 2 to 4 feet
building to 4 to 6 feet after midnight. Waves occasionally around
8 feet.
.THURSDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots. A chance of snow showers in the morning. Waves 3 to
5 feet subsiding to 1 to 3 feet late in the evening.
.FRIDAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots until early morning. A chance of snow showers. Waves
1 to 3 feet building to 3 to 5 feet.
.SATURDAY...Northwest winds 15 to 20 knots with gusts to 30 knots
becoming west 10 to 15 knots until early morning. A chance of
snow showers. A chance of showers late in the evening. Waves 4 to
6 feet. Waves occasionally around 8 feet.


$$

LHZ461-122115-
MAFOR 1216/
HURON NORTH...Gale Warning in effect...13847 19857 11830 19850
11830 12820 11810. Scattered snow showers overnight and
Wednesday morning. Waves 6 to 9 feet. Occasional wave height
around 12 feet this afternoon. Waves 6 to 9 feet subsiding to 3
to 5 feet. Occasional wave height around 12 feet tonight. Waves 2
to 4 feet Wednesday morning. 210710 210609.

HURON SOUTH...Gale Warning in effect...11757 11747 19757 11747
19767 11847 19857 11737 19757 11837 11727 11720. Waves 12 to
16 feet. Occasional wave height around 20 feet this afternoon.
Waves 10 to 14 feet subsiding to 8 to 12 feet. Occasional wave
height around 18 feet tonight. Waves 5 to 7 feet. Occasional wave
height around 10 feet Wednesday morning. 221216.

$$

MANN

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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