Great Lakes Forecast
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FZUS63 KDTX 131905
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
305 PM EDT Fri Apr 13 2018

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 large low pressure system over the central Plains at 29.20 inches
will slowly weaken while it tracks east along a warm front draped
across the southern Great Lakes. The center of the low will reach
southern Lake Michigan at 29.50 inches by Sunday morning while a
strengthening high over James Bay reaches 30.70 inches leading to a
tight pressure gradient across the region. The low will then exit
east of the eastern Lakes Monday night.

LHZ361-140815-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
305 PM EDT Fri Apr 13 2018

...GALE WARNING IN EFFECT FROM 2 AM EDT SATURDAY THROUGH SUNDAY
EVENING...

.TONIGHT...Light and variable winds becoming northeast 15 to
20 knots with gusts to 30 knots. Showers in the evening. Snow
showers. A chance of showers after midnight. Waves 2 feet or less
building to 4 to 6 feet early in the morning. Waves occasionally
around 8 feet.
.SATURDAY...Northeast winds 20 to 25 knots with gusts to
30 knots. Freezing rain and snow showers until late afternoon...
then a chance of freezing rain and snow showers late in the
afternoon. Waves 6 to 9 feet. Waves occasionally around 12 feet.
.SATURDAY NIGHT...Northeast winds 20 to 25 knots becoming east at
35 knot gales. Gusts to 40 knot gales. A chance of freezing rain
and snow showers early in the evening. A chance of
thunderstorms...freezing rain and snow showers after midnight.
Waves 8 to 12 feet. Waves occasionally around 15 feet. A gale
warning may be needed.
.SUNDAY...East at 35 knot gales decreasing to 30 knots early in
the afternoon. Gusts to 40 knot gales. Freezing rain...snow
showers and a chance of thunderstorms. Waves 10 to 14 feet. Waves
occasionally around 18 feet.
.SUNDAY NIGHT...East winds to 30 knots with gusts to 35 knot
gales decreasing to 15 to 20 knots. A chance of thunderstorms in
the evening. Snow showers and freezing rain. Showers after
midnight. Waves 10 to 14 feet. Waves occasionally around 18 feet.
.MONDAY...Northeast winds 10 to 15 knots becoming northwest 15 to
20 knots late in the afternoon. Freezing rain and snow showers
likely. A chance of showers. A chance of snow showers late in the
afternoon. Waves 5 to 7 feet. Waves occasionally around 10 feet.
.TUESDAY...Northwest winds 15 to 20 knots decreasing to 5 to
10 knots. Waves 3 to 5 feet.
.WEDNESDAY...North winds 5 to 10 knots veering to the northeast
until early evening...then becoming north 10 to 15 knots in the
late evening and early morning. A chance of snow showers. A
chance of showers. Waves 1 to 3 feet.


$$

LHZ362-363-462-140815-
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-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
305 PM EDT Fri Apr 13 2018

...GALE WARNING IN EFFECT FROM 2 AM EDT SATURDAY THROUGH SUNDAY
EVENING...

.TONIGHT...Northeast winds 15 to 20 knots decreasing to 10 to
15 knots late in the evening...then increasing to 15 to 20 knots
after midnight increasing to 20 to 25 knots with gusts to
30 knots early in the morning. A chance of snow showers early in
the evening. Showers and a chance of thunderstorms. Snow showers
in the late evening and overnight. Waves 5 to 7 feet. Waves
occasionally around 10 feet.
.SATURDAY...Northeast winds to 30 knots with gusts to 40 knot
gales. Showers and a chance of thunderstorms early in the
morning. Freezing rain...snow showers and sleet. Waves 12 to
16 feet. Waves occasionally around 20 feet.
.SATURDAY NIGHT...Northeast winds to 30 knots with gusts to
40 knot gales becoming east at 35 knot gales with gusts to
45 knot gales after midnight. Freezing rain and sleet with snow
showers likely early in the evening. A chance of sleet late in
the evening. A chance of thunderstorms...freezing rain and snow
showers after midnight. Waves 10 to 14 feet. Waves occasionally
around 18 feet. A gale warning may be needed.
.SUNDAY...East at 35 knot gales with gusts to 45 knot gales.
Freezing rain...snow showers and a chance of thunderstorms.
Showers in the afternoon. Waves 12 to 16 feet. Waves occasionally
around 20 feet.
.SUNDAY NIGHT...East winds to 30 knots with gusts to 40 knot
gales decreasing to 15 to 20 knots. A chance of thunderstorms in
the evening. Showers...freezing rain and snow showers. Waves
10 to 14 feet. Waves occasionally around 18 feet.
.MONDAY...Northeast winds 10 to 15 knots becoming north 15 to
20 knots with gusts to 30 knots late in the morning...then
becoming northwest 20 to 25 knots with gusts to 30 knots late in
the evening. Showers...freezing rain likely and a chance of snow
showers early in the morning. A chance of showers. A chance of
snow showers late in the afternoon. Waves 6 to 9 feet. Waves
occasionally around 12 feet.
.TUESDAY...Northwest winds 20 to 25 knots with gusts to 30 knots
decreasing to 10 to 15 knots. A chance of snow showers early in
the morning. A chance of snow showers late in the afternoon.
Waves 6 to 9 feet. Waves occasionally around 12 feet.
.WEDNESDAY...North winds 5 to 10 knots becoming east 10 to
15 knots until early evening...then becoming west 15 to 20 knots
in the late evening and early morning. A chance of snow showers
until late afternoon. A chance of showers. A chance of snow
showers in the late evening and early morning. Waves 3 to 5 feet
subsiding to 1 to 3 feet early in the evening...then building to
3 to 5 feet in the late evening and early morning.


$$

LHZ463-140815-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
305 PM EDT Fri Apr 13 2018

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
MORNING...

.TONIGHT...Northeast winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. Showers and a chance
of thunderstorms. Waves 4 to 6 feet. Waves occasionally around
8 feet.
.SATURDAY...Northeast winds 20 to 25 knots increasing to 30 knots
in the late morning and early afternoon...then decreasing to
20 to 25 knots late in the afternoon. Gusts to 35 knot gales. A
chance of thunderstorms and freezing rain in the morning.
Showers...sleet and a chance of snow showers. Freezing rain in
the afternoon. Waves 10 to 14 feet. Waves occasionally around
18 feet.
.SATURDAY NIGHT...Northeast winds 20 to 25 knots becoming east to
30 knots after midnight. Gusts to 35 knot gales. Sleet in the
evening. Freezing rain and a chance of thunderstorms. Waves 8 to
12 feet. Waves occasionally around 15 feet.
.SUNDAY...East winds to 30 knots decreasing to 20 to 25 knots in
the late morning and afternoon. Freezing rain in the morning.
Showers and a chance of thunderstorms. A chance of freezing rain
in the afternoon. Waves 8 to 12 feet. Waves occasionally around
15 feet.
.SUNDAY NIGHT...East winds 20 to 25 knots with gusts to 30 knots
decreasing to 10 to 15 knots in the late evening and overnight. A
chance of thunderstorms early in the evening. Showers. Waves 6 to
9 feet subsiding to 3 to 5 feet after midnight. Waves
occasionally around 12 feet.
.MONDAY...Southeast winds 5 to 10 knots becoming northwest 10 to
15 knots late in the morning...then increasing to 15 to 20 knots
with gusts to 30 knots late in the afternoon becoming west 20 to
25 knots with gusts to 30 knots late in the evening. Showers
likely early in the morning...then a chance of showers. A chance
of snow showers early in the evening. Waves 3 to 5 feet building
to 6 to 9 feet late in the afternoon. Waves occasionally around
12 feet.
.TUESDAY...Northwest winds 20 to 25 knots with gusts to 30 knots
decreasing to 5 to 10 knots. A chance of snow showers early in
the morning. A chance of showers early in the afternoon. Waves
5 to 7 feet. Waves occasionally around 10 feet.
.WEDNESDAY...North winds 5 to 10 knots becoming east 10 to
15 knots until early evening...then becoming west 15 to 20 knots
in the late evening and early morning. A chance of snow showers
until late afternoon. A chance of showers. A chance of snow
showers after midnight. Waves 2 to 4 feet subsiding to 1 to
3 feet.


$$

LHZ464-140815-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
305 PM EDT Fri Apr 13 2018

.TONIGHT...Northeast winds 10 to 15 knots increasing to 15 to
20 knots early in the morning. Showers and a chance of
thunderstorms. Waves 1 to 3 feet building to 3 to 5 feet in the
late evening and overnight.
.SATURDAY...Northeast winds 15 to 20 knots increasing to 20 to
25 knots with gusts to 30 knots in the late morning and
afternoon. A chance of thunderstorms in the morning. Showers and
sleet. A chance of freezing rain in the afternoon. Waves 6 to
9 feet. Waves occasionally around 12 feet.
.SATURDAY NIGHT...Northeast winds 20 to 25 knots with gusts to
30 knots. Sleet in the evening. Freezing rain and a chance of
thunderstorms. Waves 6 to 9 feet. Waves occasionally around
12 feet.
.SUNDAY...East winds 20 to 25 knots. Gusts to 30 knots early in
the morning then 30 knots early in the afternoon. Freezing rain
in the morning. A chance of thunderstorms. Showers in the late
morning and afternoon. Waves 6 to 9 feet. Waves occasionally
around 12 feet.
.SUNDAY NIGHT...East winds 15 to 20 knots decreasing to 5 to
10 knots. A chance of thunderstorms early in the evening. Showers
until early morning...then a chance of showers early in the
morning. Waves 3 to 5 feet.
.MONDAY...Southeast winds 5 to 10 knots becoming west 10 to
15 knots late in the morning...then becoming northwest 15 to
20 knots with gusts to 30 knots late in the afternoon. A chance
of showers. A chance of snow showers early in the evening. Waves
1 to 3 feet building to 5 to 7 feet late in the afternoon. Waves
occasionally around 10 feet.
.TUESDAY...West winds 15 to 20 knots with gusts to 30 knots
becoming northwest 5 to 10 knots until early morning. A chance of
snow showers early in the morning. Waves 4 to 6 feet subsiding to
2 to 4 feet in the late evening and early morning. Waves
occasionally around 8 feet.
.WEDNESDAY...North winds 5 to 10 knots veering to the east in the
late morning and early afternoon...then becoming southeast 10 to
15 knots early in the evening veering to the west in the late
evening and early morning. A chance of showers in the afternoon
and evening. Waves 1 to 3 feet.


$$

LHZ461-140815-
MAFOR 1321/
HURON NORTH...Gale Warning in effect...11106 11807 11817
11127 12137 19157 11137 11130. Waves 2 feet or less building
to 3 to 5 feet tonight. Waves 5 to 7 feet. Occasional wave height
around 9 feet Saturday. 220001.

HURON SOUTH...Gale Warning in effect...13126 11136 11147 19157
11157 12147 19157. A chance of thunderstorms early this evening.
Waves 1 to 3 feet building to 4 to 6 feet. Occasional wave height
around 8 feet tonight. Waves 10 to 14 feet. Occasional wave
height around 18 feet Saturday. 210204 210305.

$$

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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