Great Lakes Forecast
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FZUS63 KMQT 132059
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
359 PM EST Mon Nov 13 2017

For waters beyond five nautical miles of shore on Lake Superior

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 high pressure system of 30.4 inches currently
influencing the region will weaken to 30.2 inches and move to
central Quebec by late Tuesday. A low of 29.7 inches will glance
Lake Superior on Wednesday as it moves quickly northeast into
western Quebec by early Thursday. The region will then be briefly
influenced by a high pressure ridge of 30.3 centered in northern
Ontario late Thursday into Friday, before yet another low pressure
system of 29.4 inches approaches from the southwest and impacts
the region on Friday and Saturday.

LSZ162-140500-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
359 PM EST Mon Nov 13 2017 /259 PM CST Mon Nov 13 2017/

.LATE THIS AFTERNOON...Southeast winds 10 to 20 knots. Waves calm
to 2 feet.
.TONIGHT...Southeast winds 10 to 20 knots veering south by
midnight. Waves building to 1 to 3 feet.
.TUESDAY...South winds 10 to 20 knots. A chance of drizzle. Waves
building to 2 to 4 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots veering west late. A
chance of drizzle and rain showers in the evening, then rain
showers likely after midnight. Waves subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 15 to 25 knots becoming northwest 20 to
30 knots in the afternoon. A slight chance of rain showers. A
slight chance of snow showers in the afternoon. Waves building to
3 to 5 feet occasionally to 7 feet.
.WEDNESDAY NIGHT...North winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. A chance of rain showers in the
evening. Waves subsiding to 1 to 3 feet.
.THURSDAY...East winds 10 to 20 knots veering southeast in the
afternoon. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.THURSDAY NIGHT...Southeast winds 15 to 25 knots veering south
after midnight. A chance of rain and snow showers. Waves building
to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...South winds 15 to 25 knots veering west. Snow showers
likely. Rain showers likely. A chance of snow showers. Waves
subsiding to calm to 2 feet, then building to 1 to 3 feet.
.SATURDAY...Northwest gales to 35 knots. A chance of snow
showers. Waves building to 5 to 9 feet occasionally to 11 feet.

$$

LSZ263-140500-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
359 PM EST Mon Nov 13 2017

.LATE THIS AFTERNOON...South winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
late. Waves building to 1 to 3 feet.
.TUESDAY...South winds 10 to 20 knots veering southwest by late
morning, then backing south by mid afternoon. A chance of
drizzle. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then becoming southwest 10 to 20 knots
late. A chance of drizzle in the evening, then rain showers
likely after midnight. Waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet.
.WEDNESDAY...West winds 15 to 25 knots becoming northwest 20 to
30 knots in the afternoon. A chance of rain showers. A chance of
snow showers in the afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.WEDNESDAY NIGHT...North winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. A chance of rain showers in the
evening. A chance of snow showers. Waves 3 to 5 feet occasionally
to 7 feet.
.THURSDAY...Northeast winds 10 to 20 knots veering east in the
afternoon. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.THURSDAY NIGHT...Southeast winds 15 to 25 knots becoming south
20 to 30 knots after midnight. A chance of rain and snow showers.
Waves building to 3 to 6 feet occasionally to 8 feet.
.FRIDAY...South winds 20 to 30 knots becoming northwest 15 to
25 knots. Snow showers likely. Rain showers. A chance of snow
showers. Waves subsiding to 1 to 3 feet, then building to 2 to
4 feet.
.SATURDAY...Northwest gales to 35 knots. A chance of snow
showers. Waves building to 6 to 10 feet occasionally to 13 feet.

$$

LSZ264-140500-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
359 PM EST Mon Nov 13 2017

...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...

.LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
late. Waves building to 2 to 4 feet.
.TUESDAY...South winds 10 to 20 knots. A slight chance of
drizzle. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots becoming southwest
5 to 15 knots late. A chance of drizzle in the evening, then rain
showers after midnight. Waves subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 20 to 30 knots veering northwest in the
afternoon. A chance of rain showers. A chance of snow showers in
the afternoon. Waves building to 4 to 7 feet occasionally to
9 feet.
.WEDNESDAY NIGHT...North winds 20 to 30 knots. Gale force gusts to
35 knots in the evening. A chance of snow showers. Waves building
to 6 to 9 feet occasionally to 11 feet, then subsiding to 4 to 7
feet occasionally to 9 feet.
.THURSDAY...Northeast winds 10 to 20 knots becoming east 5 to
15 knots in the afternoon. Waves subsiding to calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 15 to 25 knots becoming south
20 to 30 knots after midnight. Snow showers, possibly mixed with
rain after midnight. Waves building to 5 to 8 feet occasionally
to 10 feet.
.FRIDAY...South winds 20 to 30 knots becoming northwest 15 to
25 knots. Rain showers, possibly mixed with snow. Waves building
to 6 to 9 feet occasionally to 11 feet, then subsiding to 2 to
4 feet.
.SATURDAY...Northwest gales to 40 knots. A chance of snow
showers, then snow showers likely. Waves building to 10 to
14 feet occasionally to 18 feet.

$$

LSZ265-140500-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
359 PM EST Mon Nov 13 2017

...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...

.LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
by midnight. Waves building to 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots by late morning, then increasing to 15 to 25 knots by
mid afternoon. A chance of drizzle. Waves building to 2 to
4 feet.
.TUESDAY NIGHT...South winds 15 to 25 knots veering southwest
late. A chance of drizzle in the evening, then rain showers after
midnight. Waves subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. A chance of rain showers. A chance of
snow showers in the afternoon. Waves building to 4 to 7 feet
occasionally to 9 feet.
.WEDNESDAY NIGHT...North gales to 35 knots diminishing to 20 to
30 knots after midnight. Snow showers, possibly mixed with rain
in the evening, then a chance of snow showers after midnight.
Waves building to 5 to 9 feet occasionally to 11 feet.
.THURSDAY...North winds 10 to 20 knots veering east in the
afternoon. Waves subsiding to 1 to 3 feet.
.THURSDAY NIGHT...Southeast winds 15 to 25 knots becoming south
gales to 35 knots after midnight. A chance of rain and snow
showers after midnight. Waves subsiding to calm to 2 feet, then
building to 4 to 7 feet occasionally to 9 feet.
.FRIDAY...South winds 20 to 30 knots veering west. Rain showers,
possibly mixed with snow. Waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 1 to 3 feet.
.SATURDAY...Northwest gales to 40 knots. Snow showers likely.
Waves building to 10 to 14 feet occasionally to 18 feet.

$$

LSZ266-140500-
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
359 PM EST Mon Nov 13 2017

...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...

.LATE THIS AFTERNOON...West winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...Southwest winds 5 to 15 knots backing south by
midnight, then increasing to 10 to 20 knots late. Waves building
to 2 to 4 feet.
.TUESDAY...South winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. A chance of drizzle. Waves building to
4 to 7 feet occasionally to 9 feet.
.TUESDAY NIGHT...South winds 20 to 30 knots diminishing to 15 to
25 knots late. A chance of drizzle and rain showers in the
evening, then rain showers after midnight. Waves subsiding to
3 to 5 feet occasionally to 7 feet.
.WEDNESDAY...West winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. A chance of rain showers. A chance of
snow showers in the afternoon. Waves subsiding to 2 to 4 feet,
then building to 5 to 8 feet occasionally to 10 feet.
.WEDNESDAY NIGHT...North gales to 40 knots. A chance of rain
showers in the evening. A chance of snow showers. Waves building
to 6 to 10 feet occasionally to 13 feet.
.THURSDAY...North winds 15 to 25 knots becoming northeast 10 to
20 knots in the afternoon. Waves subsiding to 1 to 3 feet.
.THURSDAY NIGHT...Southeast winds 15 to 25 knots becoming south
gales to 35 knots after midnight. A chance of snow showers,
possibly mixed with rain after midnight. Waves subsiding to calm
to 2 feet, then building to 5 to 8 feet occasionally to 10 feet.
.FRIDAY...South gales to 35 knots diminishing to 20 to 30 knots.
Rain showers, possibly mixed with snow. Waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
.SATURDAY...Northwest gales to 45 knots. Rain showers likely.
Snow showers. Waves building to 12 to 17 feet occasionally to
21 feet.

$$

LSZ267-140500-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
359 PM EST Mon Nov 13 2017

...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...

.LATE THIS AFTERNOON...Northwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Southwest winds less than 10 knots increasing to 5 to
15 knots by midnight, then becoming south 10 to 20 knots late.
Waves building to 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots increasing to 20 to
30 knots. A chance of drizzle. Waves building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY NIGHT...South winds 20 to 30 knots. Rain showers. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY...Southwest winds 20 to 30 knots veering west in the
afternoon. Rain showers in the morning, then a chance of rain
showers in the afternoon. Waves subsiding to 2 to 4 feet, then
building to 5 to 8 feet occasionally to 10 feet.
.WEDNESDAY NIGHT...Northwest gales to 35 knots veering north
after midnight. A chance of rain showers, possibly mixed with
snow. Waves building to 5 to 9 feet occasionally to 11 feet.
.THURSDAY...North winds 15 to 25 knots becoming northeast 10 to
20 knots in the afternoon. Waves subsiding to calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 10 to 20 knots becoming south
20 to 30 knots after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY...South gales to 35 knots. Rain showers, possibly mixed
with snow. Waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet.
.SATURDAY...Northwest gales to 40 knots. Rain showers. Snow
showers. Waves building to 12 to 17 feet occasionally to 21 feet.

$$

LSZ261-140500-
MAFOR 1322/
Superior West 12310 12410 13520 11420. Waves 2 feet or less
building to 2 to 4 feet tonight and Tuesday.

Superior North Central 11500 12410 14420 11420. Waves 1 to 4 feet.

Superior South Central 11500 11400 11410 13420 12430. Waves 1 to
5 feet tonight and Tuesday.

Superior East 11600 11400 11510 12420 13430. Chance of drizzle
Tuesday afternoon. Waves 1 to 3 feet tonight building to 3 to 7
feet Tuesday.

$$

JSS

Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes


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