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313
FZUS63 KMQT 101443
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
943 AM EST Wed Jan 10 2018

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 trough of 29.4 inches extending from northwest
Ontario to the central Plains this morning will cross the Upper
Great Lakes Thursday at 29.6 inches and reach the East Coast
Friday. High pressure of 30.8 inches over the Canadian Rockies
Friday will reach the Mid Mississippi Valley Sunday at 30.6
inches, as a 30.4 inch ridge crosses the Upper Great Lakes.

LSZ162-102245-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
943 AM EST Wed Jan 10 2018 /843 AM CST Wed Jan 10 2018/

...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY
EVENING...

.REST OF TODAY...South winds 10 to 20 knots veering southwest. A
slight chance of drizzle late in the morning. Waves 1 to 3 feet
building to 2 to 4 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest by
midnight, then becoming north 10 to 20 knots late. Areas of fog.
A chance of drizzle in the evening. Snow, possibly mixed with
rain and freezing rain after midnight. Waves subsiding to 1 to 3
feet.
.THURSDAY...North gales to 35 knots diminishing to 20 to 30 knots
by mid afternoon. A chance of freezing rain in the morning. Snow.
Waves building to 4 to 8 feet occasionally to 10 feet.
.THURSDAY NIGHT...North winds 20 to 30 knots diminishing to 10 to
20 knots after midnight. Snow. Waves subsiding to 2 to 4 feet.
.FRIDAY...North winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. A chance of snow showers. Waves subsiding to
calm to 2 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots. Waves building to
1 to 3 feet.
.SATURDAY...North winds 5 to 15 knots backing northwest. Waves
subsiding to calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots veering north. A chance
of snow showers. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-102245-
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-
943 AM EST Wed Jan 10 2018

...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...

.REST OF TODAY...South winds 15 to 25 knots veering southwest by
late morning, then diminishing to 10 to 20 knots by mid
afternoon. A slight chance of drizzle late in the morning. Waves
3 to 5 feet occasionally to 7 feet subsiding to 1 to 3 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming north 15 to
25 knots late. Areas of fog. A chance of drizzle in the evening.
A chance of rain, possibly mixed with freezing rain and snow
after midnight. Waves subsiding to calm to 2 feet, then building
to 2 to 4 feet.
.THURSDAY...North gales to 40 knots. Freezing spray. A chance of
freezing rain in the morning. Snow. Waves building to 7 to
10 feet occasionally to 13 feet.
.THURSDAY NIGHT...North gales to 35 knots diminishing to 15 to
25 knots after midnight. Heavy freezing spray in the evening.
Snow. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...North winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. A chance of snow showers. Waves subsiding to
calm to 2 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots. A chance of snow
showers. Waves building to 1 to 3 feet.
.SATURDAY...North winds 10 to 20 knots becoming northwest 5 to
15 knots. A chance of snow showers. Waves subsiding to calm to
2 feet.
.SUNDAY...Southwest winds 5 to 15 knots backing south. A chance
of snow showers. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-102245-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
943 AM EST Wed Jan 10 2018

...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...

.REST OF TODAY...South winds 20 to 30 knots becoming southwest
10 to 20 knots by mid afternoon. A slight chance of snow late in
the morning. A slight chance of drizzle. Waves 7 to 10 feet
occasionally to 13 feet subsiding to 3 to 5 feet occasionally to
7 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming north 15 to
25 knots late. Areas of fog. A chance of drizzle. Freezing rain,
possibly mixed with rain and snow after midnight. Waves subsiding
to calm to 2 feet, then building to 2 to 4 feet.
.THURSDAY...North gales to 40 knots. Heavy freezing spray.
Freezing rain in the morning. Snow. Waves building to 9 to
12 feet occasionally to 15 feet.
.THURSDAY NIGHT...North gales to 40 knots diminishing to 20 to
30 knots after midnight. Heavy freezing spray. Snow. Waves
subsiding to 4 to 7 feet occasionally to 9 feet.
.FRIDAY...North winds 15 to 25 knots becoming northwest 10 to
20 knots in the afternoon. Waves subsiding to 2 to 4 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots. A chance of snow
showers. Waves 2 to 4 feet.
.SATURDAY...North winds 10 to 20 knots diminishing to 5 to
15 knots. A chance of snow showers. Waves subsiding to calm to
2 feet.
.SUNDAY...Northwest winds 5 to 15 knots becoming east 10 to
20 knots. A chance of snow showers. Waves building to 1 to
3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-102245-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
943 AM EST Wed Jan 10 2018

...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...

.REST OF TODAY...South winds 20 to 30 knots diminishing to 10 to
20 knots by mid afternoon. Waves 5 to 8 feet occasionally to
10 feet subsiding to 1 to 3 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest late.
Areas of fog. A slight chance of drizzle in the evening. Drizzle
likely and a chance of snow after midnight. Waves calm to 2 feet.
.THURSDAY...North winds 10 to 20 knots increasing to gales to
35 knots. Areas of fog in the morning. Freezing spray in the
afternoon. Rain in the morning. Snow, possibly mixed with
freezing rain. Waves building to 9 to 12 feet occasionally to
15 feet.
.THURSDAY NIGHT...North gales to 35 knots diminishing to 20 to
30 knots after midnight. Heavy freezing spray. Snow. Waves
subsiding to 5 to 8 feet occasionally to 10 feet.
.FRIDAY...North winds 15 to 25 knots backing northwest in the
afternoon. A chance of snow showers. Waves subsiding to 2 to
4 feet.
.FRIDAY NIGHT...North winds 15 to 25 knots. Snow showers likely
in the evening, then a chance of snow showers after midnight.
Waves building to 3 to 5 feet occasionally to 7 feet.
.SATURDAY...North winds 15 to 25 knots becoming northwest 10 to
20 knots. A chance of snow showers. Waves subsiding to calm to
2 feet.
.SUNDAY...West winds 10 to 20 knots becoming southwest 5 to
15 knots. A chance of snow showers. Waves calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-102245-
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-
943 AM EST Wed Jan 10 2018

...GALE WARNING IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...

.REST OF TODAY...South gales to 35 knots diminishing to 15 to
25 knots by mid afternoon. A slight chance of drizzle late in the
morning. Waves 7 to 11 feet occasionally to 13 feet, subsiding
to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest late.
Areas of fog. A chance of drizzle. Waves subsiding to 2 to
4 feet.
.THURSDAY...Southwest winds 15 to 25 knots becoming north gales
to 40 knots in the afternoon. Areas of fog in the morning.
Freezing spray in the afternoon. Snow, possibly mixed with rain
and freezing rain. Waves building to 9 to 12 feet occasionally to
15 feet.
.THURSDAY NIGHT...North gales to 40 knots. Heavy freezing spray.
Snow. Waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 7 to 10 feet occasionally to 13 feet.
.FRIDAY...North winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. Heavy freezing spray in the morning. A
chance of snow showers. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY NIGHT...North winds 15 to 25 knots increasing to 20 to
30 knots after midnight. A chance of snow showers. Freezing spray
after midnight. Waves subsiding to 3 to 6 feet occasionally to
8 feet.
.SATURDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots. Freezing spray. A chance of snow showers. Waves
subsiding to 2 to 4 feet.
.SUNDAY...Northwest winds 10 to 20 knots backing south. Snow
showers likely, then a chance of snow showers. Waves subsiding to
calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-102245-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
943 AM EST Wed Jan 10 2018

...GALE WARNING IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...

.REST OF TODAY...South gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. A slight chance of drizzle. Waves 4 to
8 feet occasionally to 10 feet, subsiding to 3 to 5 feet
occasionally to 7 feet.
.TONIGHT...South winds 15 to 25 knots diminishing to 10 to
20 knots late. Patchy fog. A chance of drizzle in the evening.
Drizzle and rain likely after midnight. Waves subsiding to calm
to 2 feet.
.THURSDAY...South winds 10 to 20 knots becoming north 20 to
30 knots by mid afternoon. Areas of fog. Rain. Snow, possibly
mixed with freezing rain in the afternoon. Waves building to 3 to
6 feet occasionally to 8 feet.
.THURSDAY NIGHT...North winds 20 to 30 knots increasing to gales
to 35 knots after midnight. Heavy freezing spray. A chance of
freezing rain in the evening. Snow likely. Waves building to 5 to
9 feet occasionally to 11 feet.
.FRIDAY...North winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. Heavy freezing spray in the morning.
Waves subsiding to 2 to 4 feet.
.FRIDAY NIGHT...North winds 15 to 25 knots. Waves building to
3 to 5 feet occasionally to 7 feet.
.SATURDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of snow showers. Waves subsiding to calm to
2 feet.
.SUNDAY...South winds 10 to 20 knots. Snow showers likely, then a
chance of snow showers. Waves building to 1 to 3 feet.

Note, wave height forecasts are for ice free areas.

$$
LSZ261-102245-
MAFOR 1016/
Superior West 11530 11520 11510 12500 11716 11837 11857. Patchy
fog late this evening. Chance of rain and drizzle after midnight
tonight. Freezing spray late. Chance of freezing rain through mid
morning Thursday morning. Waves 1 to 3 feet this afternoon and
tonight. Waves 4 to 7 feet building to 6 to 9 feet Thursday
morning.

Superior North Central 11440 11530 11520 11510 11503 11713 11846
11857. Chance of drizzle late this morning and late this evening.
Chance of rain and drizzle after midnight, then chance of drizzle
late tonight. Freezing spray late. Chance of snow through mid
morning Thursday. Waves 5 to 9 feet subsiding to 3 to 6 feet this
afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet tonight.
Waves 5 to 8 feet building to 7 to 10 feet Thursday morning.

Superior South Central...Gale Warning in effect...11450 11430
11420 11410 12413 11517 11727. Patchy fog late this evening.
Chance of drizzle overnight. Waves 4 to 7 feet subsiding to 1 to
4 feet this afternoon through Thursday morning.

Superior East...Gale Warning in effect...11450 11440 11430 12420
11520 11516 11416. Patchy fog overnight. Chance of drizzle
overnight. Waves 6 to 10 feet subsiding to 4 to 7 feet this
afternoon. Waves 1 to 5 feet tonight through Thursday morning.

$$

Petro

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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