Great Lakes Forecast
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FZUS63 KDTX 210806
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
306 AM EST Tue Nov 21 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 strengthening low pressure system, 29.20 inches, will
move just north of Lake Superior this morning, dragging a cold front
through the region during the day. Lake-effect will redevelop in the
wake of the cold front. A ridge of high pressure, 30.10 inches, will
drift into the region during the day Wednesday. A trough of low
pressure, 29.90 inches, will advance across the region on
Thanksgiving Day.

LHZ361-212115-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
306 AM EST Tue Nov 21 2017

...GALE WARNING IN EFFECT FROM 10 AM EST THIS MORNING THROUGH
THIS EVENING...

.TODAY...Southwest winds 15 to 20 knots increasing to 20 to
25 knots with gusts to 30 knots late in the morning...then
veering to the west with gusts to 35 knot gales early in the
afternoon increasing to 30 knots with gusts to 35 knot gales late
in the afternoon. A chance of snow showers late in the afternoon.
Waves 6 to 9 feet. Waves occasionally around 12 feet.
.TONIGHT...Northwest winds to 30 knots decreasing to 20 to
25 knots in the late evening and overnight. Gusts to 35 knot
gales. A chance of snow showers until early morning. Waves 6 to
9 feet. Waves occasionally around 12 feet.
.WEDNESDAY...West winds 10 to 15 knots. Waves 5 to 7 feet
subsiding to 1 to 3 feet. Waves occasionally around 10 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots increasing to
15 to 20 knots after midnight. Waves 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 20 knots becoming west 5 to
10 knots. A chance of snow showers in the morning. A chance of
showers early in the morning. Waves 3 to 5 feet subsiding to 2 to
4 feet late in the evening.
.FRIDAY...South winds 10 to 15 knots becoming southwest 15 to
20 knots with gusts to 30 knots. A chance of snow showers early
in the morning. A chance of showers early in the morning...then
showers until early morning. Waves 2 to 4 feet building to 4 to
6 feet. Waves occasionally around 8 feet.
.SATURDAY...West winds 15 to 20 knots with gusts to 30 knots
increasing to 20 to 25 knots with gusts to 35 knot gales in the
late morning and early afternoon...then becoming northwest 15 to
20 knots with gusts to 30 knots until early morning. A chance of
showers until afternoon. A chance of snow showers until late
afternoon. Waves 5 to 7 feet. Waves occasionally around 10 feet.


$$

LHZ362-212115-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond
5NM off shore-
306 AM EST Tue Nov 21 2017

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...Southwest winds to 30 knots with gusts to 40 knot gales
decreasing to 20 to 25 knots with gusts to 35 knot gales in the
late morning and early afternoon...then veering to the west with
gusts to 35 knot gales late in the afternoon. A chance of snow
showers late in the afternoon. Waves 10 to 14 feet. Waves
occasionally around 18 feet.
.TONIGHT...Northwest winds to 30 knots decreasing to 20 to
25 knots after midnight. Gusts to 35 knot gales. A chance of snow
showers. Waves 8 to 12 feet. Waves occasionally around 15 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and afternoon. A chance of snow
showers early in the morning. Waves 5 to 7 feet subsiding to 2 to
4 feet early in the afternoon. Waves occasionally around 10 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots increasing to
15 to 20 knots after midnight. Waves 1 to 3 feet building to 3 to
5 feet in the late evening and overnight.
.THURSDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the evening. Waves 4 to 6 feet.
.FRIDAY...South winds 10 to 15 knots increasing to 20 to 25 knots
with gusts to 35 knot gales in the late morning and early
afternoon...then increasing to 30 knots with gusts to 40 knot
gales early in the evening becoming southwest 20 to 25 knots with
gusts to 35 knot gales in the late evening and early morning. A
chance of showers. Showers likely in the evening...then a chance
of showers after midnight. Waves 2 to 4 feet building to 8 to
12 feet. Waves occasionally around 15 feet.
.SATURDAY...Northwest winds 20 to 25 knots. Gusts to 35 knot
gales. A chance of showers. A chance of snow showers. Waves 8 to
12 feet. Waves occasionally around 15 feet.


$$

LHZ363-462-212115-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
306 AM EST Tue Nov 21 2017

...GALE WARNING IN EFFECT UNTIL 10 AM EST THIS MORNING...

.TODAY...Southwest winds to 30 knots with gusts to 40 knot gales
decreasing to 20 to 25 knots with gusts to 30 knots in the
afternoon. A chance of showers early in the afternoon. A chance
of snow showers in the afternoon. Waves 8 to 12 feet. Waves
occasionally around 15 feet.
.TONIGHT...Northwest winds 20 to 25 knots with gusts to 30 knots.
A chance of snow showers early in the morning. Waves 8 to
12 feet. Waves occasionally around 15 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. Waves 6 to 9 feet subsiding to 3 to 5 feet early in
the afternoon. Waves occasionally around 12 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots increasing to
15 to 20 knots after midnight. Waves 2 to 4 feet building to 3 to
5 feet in the late evening and overnight.
.THURSDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the afternoon. Waves 4 to 6 feet. Waves
occasionally around 8 feet.
.FRIDAY...Southwest winds 10 to 15 knots increasing to 20 to
25 knots with gusts to 35 knot gales in the late morning and
early afternoon...then becoming south to 30 knots with gusts to
35 knot gales early in the evening becoming southwest 20 to
25 knots with gusts to 35 knot gales in the late evening and
early morning. Showers likely in the evening. A chance of showers
after midnight. Waves 2 to 4 feet building to 8 to 12 feet. Waves
occasionally around 15 feet.
.SATURDAY...Southwest winds 20 to 25 knots becoming west 15 to
20 knots in the late morning and early afternoon...then becoming
northwest 20 to 25 knots until early morning. Gusts to 35 knot
gales. A chance of showers until afternoon. A chance of snow
showers until early morning. A chance of showers in the evening.
Waves 8 to 12 feet. Waves occasionally around 15 feet.


$$

LHZ463-464-212115-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
306 AM EST Tue Nov 21 2017

...GALE WARNING IN EFFECT UNTIL 10 AM EST THIS MORNING...

.TODAY...South winds to 30 knots with gusts to 35 knot gales
becoming southwest 15 to 20 knots with gusts to 30 knots. Showers
likely early in the afternoon. Snow showers likely late in the
afternoon. Waves 8 to 12 feet subsiding to 4 to 6 feet late in
the afternoon. Waves occasionally around 15 feet.
.TONIGHT...Northwest winds 20 to 25 knots. Gusts to 30 knots
after midnight. A chance of snow showers early in the evening.
Waves 6 to 9 feet. Waves occasionally around 12 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and afternoon. Waves 6 to 9 feet
subsiding to 3 to 5 feet early in the afternoon. Waves
occasionally around 12 feet.
.WEDNESDAY NIGHT...West winds 5 to 10 knots becoming southwest
15 to 20 knots. Waves 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the afternoon. Waves 2 to 4 feet subsiding to
1 to 3 feet late in the evening.
.FRIDAY...Southwest winds 10 to 15 knots increasing to 20 to
25 knots with gusts to 35 knot gales. A chance of showers in the
evening. Showers likely after midnight. Waves 2 to 4 feet
building to 6 to 9 feet. Waves occasionally around 12 feet.
.SATURDAY...West winds 15 to 20 knots with gusts to 30 knots.
Showers likely early in the morning...then a chance of showers in
the late morning and early afternoon. A chance of snow showers
after midnight. Waves 5 to 7 feet building to 6 to 9 feet in the
late evening and early morning. Waves occasionally around
12 feet.


$$

LHZ461-212115-
MAFOR 2110/
HURON NORTH...Gale Warning in effect...12540 19550 11630 12640
19650 12740 19750 11730. A chance of snow showers this
afternoon and evening. Waves 10 to 14 feet subsiding to 8 to 12
feet. Occasional wave height around 18 feet today. Waves 8 to 12
feet subsiding to 5 to 7 feet. Occasional wave height around 15
feet tonight. 211013 210912.

HURON SOUTH...Gale Warning in effect...13540 19550 12630 13730.
A chance of rain and snow showers this afternoon. A chance of
snow showers tonight. Waves 8 to 12 feet subsiding to 6 to 9
feet. Occasional wave height around 15 feet today. Waves 6 to 9
feet. Occasional wave height around 12 feet tonight. 210811
210710.

$$

JVC

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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