Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
000
FZUS63 KDTX 202030
GLFLH

Open Lake Forecast for Lake Huron
National Weather Service Detroit/Pontiac MI
330 PM EST Mon Nov 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...High pressure system, 30.10 inches, will continue
to slide east through the Ohio Valley this afternoon, with an
extension of the ridge northward across the Great Lakes region. The
next low pressure system, 29.20 inches, will move east along the
southern tier of Canada to just north of Lake Superior late tonight.
Southwest winds will increase between the departing high and the
approaching low. The attendant cold front will clear the central
Great Lakes region Tuesday, ushering in another round of brisk
northwesterly flow. High pressure will regain a foothold on
Wednesday.

LHZ361-210900-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
330 PM EST Mon Nov 20 2017

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

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


$$

LHZ363-210900-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off
shore-
330 PM EST Mon Nov 20 2017

...GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
TUESDAY MORNING...

.TONIGHT...Southwest winds 20 to 25 knots with gusts to 30 knots
increasing to 30 knots with gusts to 40 knot gales in the late
evening and overnight. Waves 6 to 9 feet building to 10 to
14 feet after midnight. Waves occasionally around 18 feet.
.TUESDAY...Southwest winds to 30 knots decreasing to 20 to
25 knots in the afternoon. Gusts to 35 knot gales. A chance of
showers in the afternoon. Waves 8 to 12 feet. Waves occasionally
around 15 feet.
.TUESDAY NIGHT...West winds 20 to 25 knots becoming northwest
15 to 20 knots after midnight. Gusts to 30 knots. A chance of
showers early in the evening. Waves 8 to 12 feet. Waves
occasionally around 15 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots becoming west 5 to
10 knots. 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 1 to 3 feet building to 2 to 4 feet after
midnight.
.THURSDAY...West winds 15 to 20 knots decreasing to 10 to
15 knots late in the evening. Waves 4 to 6 feet. Waves
occasionally around 8 feet.
.FRIDAY...Southwest winds 5 to 10 knots becoming south 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 in the afternoon. 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...West winds 15 to 20 knots becoming northwest 20 to
25 knots until early morning. Gusts to 35 knot gales. A chance of
showers until afternoon. A chance of showers in the evening. A
chance of snow showers in the late evening and early morning.
Waves 8 to 12 feet. Waves occasionally around 15 feet.


$$

LHZ362-210900-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond
5NM off shore-
330 PM EST Mon Nov 20 2017

...GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH LATE
TUESDAY NIGHT...

.TONIGHT...Southwest winds 15 to 20 knots increasing to 30 knots.
Gusts to 35 knot gales. Waves 6 to 9 feet building to 10 to
14 feet after midnight. Waves occasionally around 18 feet.
.TUESDAY...Southwest winds to 30 knots decreasing to 20 to
25 knots in the late morning and afternoon. Gusts to 35 knot
gales. A chance of showers in the afternoon. Waves 10 to 14 feet.
Waves occasionally around 18 feet.
.TUESDAY NIGHT...West winds to 30 knots becoming northwest 15 to
20 knots. Gusts to 35 knot gales. A chance of showers in the
evening. A chance of snow showers until early morning. Waves
10 to 14 feet. Waves occasionally around 18 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 in the late morning and afternoon. Waves
occasionally around 12 feet.
.WEDNESDAY NIGHT...West winds 10 to 15 knots becoming southwest
15 to 20 knots after midnight. Waves 2 to 4 feet.
.THURSDAY...West winds 15 to 20 knots decreasing to 10 to
15 knots late in the evening. Waves 4 to 6 feet. Waves
occasionally around 8 feet.
.FRIDAY...Southwest winds 5 to 10 knots becoming south 20 to
25 knots with gusts to 35 knot gales in the late morning and
early afternoon...then becoming southwest to 30 knots with gusts
to 35 knot gales early in the evening decreasing to 20 to
25 knots with gusts to 35 knot gales in the late evening and
early morning. A chance of snow showers early in the morning. A
chance of showers in the late morning and early afternoon...then
showers likely until early morning. Waves 2 to 4 feet building to
10 to 14 feet. Waves occasionally around 18 feet.
.SATURDAY...West winds 15 to 20 knots becoming northwest 20 to
25 knots. Gusts to 35 knot gales. A chance of showers until
afternoon. A chance of snow showers after midnight. Waves 8 to
12 feet. Waves occasionally around 15 feet.


$$

LHZ462-210900-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
330 PM EST Mon Nov 20 2017

...GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH LATE
TONIGHT...

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


$$

LHZ463-464-210900-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
330 PM EST Mon Nov 20 2017

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


$$

LHZ461-210300-
MAFOR 2022/
HURON NORTH...Gale Warning in effect...11520 12530 11540 11540
19550 12530 11630. A chance of showers Tuesday. Waves 3 to 5
feet building to 8 to 12 feet. Occasional wave height around 15
feet tonight. Waves 8 to 12 feet subsiding to 6 to 9 feet.
Occasional wave height around 15 feet Tuesday. 210305 210507.

HURON SOUTH...Gale Warning in effect...12530 14540 19550 12530.
A chance of showers Tuesday afternoon. Waves 3 to 5 feet building
to 6 to 9 feet. Occasional wave height around 12 feet tonight.
Waves 6 to 9 feet. Occasional wave height around 12 feet Tuesday.
210406 210507.

$$

DG

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)



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.