Great Lakes Forecast
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705
FZUS63 KDTX 171418
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
918 AM EST Wed Jan 17 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 ridge of high pressure will intrude into the area from a large
arctic high pressure system centered over the deep south. This
feature will largely remain in place into the weekend. To the north,
low pressure of 29.50 inches will track from the southern shores of
Hudson Bay into Ontario today. A second low will then organize over
the Canadian prairie provinces late Thursday and sweep east across
northern Ontario on Friday.

LHZ361-172130-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
918 AM EST Wed Jan 17 2018

.REST OF TODAY...Southwest winds 20 to 25 knots with gusts to
30 knots. Freezing spray in the afternoon. Waves 5 to 7 feet.
Waves occasionally around 10 feet.
.TONIGHT...West winds 20 to 25 knots. Gusts to 30 knots until
early morning. Freezing spray. Waves 6 to 9 feet. Waves
occasionally around 12 feet.
.THURSDAY...West winds 15 to 20 knots decreasing to 5 to
10 knots. A chance of snow showers in the afternoon. Waves 4 to
6 feet subsiding to 2 to 4 feet early in the afternoon. Waves
occasionally around 8 feet.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. A chance of snow
showers early in the evening. Waves 2 feet or less.
.FRIDAY...Southwest winds 5 to 10 knots increasing to 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet late in the
afternoon.
.SATURDAY...West winds 10 to 15 knots decreasing to 5 to 10 knots
until early morning. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.SUNDAY...Light and variable winds becoming southeast 5 to
10 knots until early evening...then becoming east 10 to 15 knots
in the late evening and early morning. A chance of showers in the
afternoon and evening. A chance of snow showers in the afternoon
and evening...then snow showers after midnight. Waves 2 feet or
less building to 3 to 5 feet in the late evening and early
morning.


$$

LHZ362-172130-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond
5NM off shore-
918 AM EST Wed Jan 17 2018

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.REST OF TODAY...Southwest winds 20 to 25 knots with gusts to
35 knot gales. Freezing spray late in the afternoon. Waves 6 to
9 feet building to 8 to 12 feet late in the afternoon. Waves
occasionally around 15 feet.
.TONIGHT...Southwest winds 20 to 25 knots with gusts to 35 knot
gales decreasing to 15 to 20 knots with gusts to 30 knots in the
late evening and overnight. Waves 6 to 9 feet subsiding to 5 to
7 feet early in the morning. Waves occasionally around 12 feet.
.THURSDAY...Southwest winds 10 to 15 knots. Waves 4 to 6 feet.
Waves occasionally around 8 feet.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots. Waves 2 to
4 feet.
.FRIDAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then increasing to 20 to 25 knots
with gusts to 30 knots late in the afternoon decreasing to 15 to
20 knots with gusts to 30 knots late in the evening. Waves 4 to
6 feet building to 6 to 9 feet late in the afternoon. Waves
occasionally around 12 feet.
.SATURDAY...Southwest winds 10 to 15 knots decreasing to 5 to
10 knots. Waves 4 to 6 feet subsiding to 1 to 3 feet until early
morning. Waves occasionally around 8 feet.
.SUNDAY...Southwest winds 5 to 10 knots backing to the east early
in the evening...then increasing to 15 to 20 knots in the late
evening and early morning. A chance of snow showers in the
afternoon and evening. A chance of showers. Snow showers after
midnight. Waves 1 to 3 feet building to 4 to 6 feet in the late
evening and early morning. Waves occasionally around 8 feet.


$$

LHZ363-462-172130-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
918 AM EST Wed Jan 17 2018

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

.REST OF TODAY...Southwest winds 15 to 20 knots with gusts to
30 knots increasing to 30 knots with gusts to 40 knot gales.
Freezing spray in the afternoon. Waves 6 to 9 feet building to
8 to 12 feet late in the afternoon. Waves occasionally around
15 feet.
.TONIGHT...Southwest winds to 30 knots with gusts to 40 knot
gales decreasing to 20 to 25 knots with gusts to 35 knot gales
after midnight. Freezing spray until early morning. Waves 8 to
12 feet. Waves occasionally around 15 feet.
.THURSDAY...Southwest winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. Waves 5 to 7 feet. Waves
occasionally around 10 feet.
.THURSDAY NIGHT...Southwest winds 15 to 20 knots decreasing to
10 to 15 knots in the late evening and overnight. Waves 3 to
5 feet.
.FRIDAY...Southwest winds 10 to 15 knots increasing to 20 to
25 knots with gusts to 30 knots. Waves 4 to 6 feet building to
6 to 9 feet late in the afternoon. Waves occasionally around
12 feet.
.SATURDAY...Southwest winds 15 to 20 knots decreasing to 10 to
15 knots. Waves 4 to 6 feet. Waves occasionally around 8 feet.
.SUNDAY...Southwest winds 5 to 10 knots backing to the southeast
early in the evening...then increasing to 10 to 15 knots in the
late evening and early morning. A chance of snow showers. A
chance of showers...then snow showers with showers likely after
midnight. Waves 2 to 4 feet.

Wave heights are for ice free areas.

$$

LHZ463-464-172130-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
918 AM EST Wed Jan 17 2018

.REST OF TODAY...Southwest winds 10 to 15 knots increasing to
20 to 25 knots with gusts to 30 knots. Waves 2 to 4 feet building
to 4 to 6 feet in the afternoon. Waves occasionally around
8 feet.
.TONIGHT...Southwest winds 20 to 25 knots with gusts to 35 knot
gales decreasing to 15 to 20 knots after midnight. Waves 4 to
6 feet. Waves occasionally around 8 feet.
.THURSDAY...Southwest winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. Waves 2 to 4 feet.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots. Waves 1 to
3 feet.
.FRIDAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots with gusts to 30 knots. Waves 1 to 3 feet building to
3 to 5 feet.
.SATURDAY...Southwest winds 15 to 20 knots decreasing to 5 to
10 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.SUNDAY...South winds 5 to 10 knots. A chance of snow showers. A
chance of showers until early evening...then rain and snow
showers likely in the late evening and early morning. Waves
2 feet or less.

Wave heights are for ice free areas.

$$

LHZ461-172130-
MAFOR 1716/
HURON NORTH...Gale Warning in effect...12530 12630 13620
11610. Waves 5 to 7 feet. Occasional wave height around 10 feet
this afternoon. Waves 5 to 7 feet subsiding to 3 to 5 feet.
Occasional wave height around 10 feet tonight. Waves 3 to 5 feet
subsiding to 2 to 4 feet Thursday morning. 220507.

HURON SOUTH...Gale Warning in effect...11530 19550 11541 19551
12551 11641 19651 12631 11630. Waves 3 to 5 feet building to 6
to 9 feet. Occasional wave height around 12 feet this afternoon.
Waves 6 to 9 feet subsiding to 4 to 6 feet. Occasional wave
height around 12 feet tonight. Waves 3 to 5 feet Thursday
morning. 210406 210508.

$$

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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