Great Lakes Forecast
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FZUS63 KMQT 270801
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 AM EDT Tue Jun 27 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 30.2 inch high pressure over the mid-Mississippi
Valley will shift over the Ohio Valley today and then move off
the East coast on Wednesday. A 29.4 inch low pressure over North
Dakota Wednesday morning will reach Upper Michigan Thursday
morning and southern Quebec on Friday morning, as a 29.5 inch low
pressure makes its way from the Central Plains to Illinois. This
low will reach the Eastern Great Lakes Saturday while a 29.9 inch
low remains nearly stationary over Manitoba.

LSZ162-271615-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 AM EDT Tue Jun 27 2017 /301 AM CDT Tue Jun 27 2017/

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Southwest winds 5 to 15 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots. A slight chance of showers
after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming east 10 to
20 knots in the afternoon. Showers likely and isolated
thunderstorms. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 knots becoming north
5 to 15 knots after midnight. Isolated thunderstorms through
midnight. Scattered rain showers. Waves building to 1 to 3 feet,
then subsiding to calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots veering northeast by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Northeast winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...Northeast winds 5 to 15 knots veering east. A chance of
showers. Waves calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots backing northwest. A
chance of showers. Waves calm to 2 feet.

$$

LSZ263-271615-
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-
401 AM EDT Tue Jun 27 2017

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots late. Waves building to 1 to 3 feet.
.TONIGHT...South winds 5 to 15 knots. Waves subsiding to calm to
2 feet.
.WEDNESDAY...South winds 5 to 15 knots backing east in the
afternoon. A chance of showers through early afternoon. Isolated
thunderstorms. Numerous showers by mid afternoon. Waves building
to 1 to 3 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots backing northeast
after midnight. Numerous rain showers and isolated thunderstorms
through midnight, then scattered rain showers after midnight.
Waves 1 to 3 feet.
.THURSDAY...North winds 5 to 15 knots. A chance of rain showers.
Waves subsiding to calm to 2 feet.
.THURSDAY NIGHT...Northwest winds less than 10 knots veering
northeast after midnight. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots veering east. A chance of
rain showers. Waves calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots backing northwest. A
chance of showers. Waves calm to 2 feet.

$$

LSZ264-271615-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 AM EDT Tue Jun 27 2017

.EARLY THIS MORNING...West winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...Southwest winds 5 to 15 knots. Waves building to 1 to
3 feet.
.TONIGHT...Southwest winds 5 to 15 knots. Waves subsiding to calm
to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots backing southeast in the
afternoon, then becoming east 10 to 20 knots late. Scattered rain
showers. Waves building to 1 to 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 20 knots. Numerous rain
showers through midnight, then scattered rain showers after
midnight. Waves building to 2 to 4 feet.
.THURSDAY...Northeast winds 5 to 15 knots backing north by mid
afternoon. A chance of rain showers. Waves subsiding to calm to
2 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots veering northeast
after midnight. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots. A chance of rain
showers. Waves calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots backing north. A chance
of rain showers. Waves calm to 2 feet.

$$

LSZ265-271615-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 AM EDT Tue Jun 27 2017

.EARLY THIS MORNING...West winds 10 to 20 knots. Waves calm to
2 feet.
.TODAY...West winds 5 to 15 knots backing southwest in the
afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots backing southeast in the
afternoon, then increasing to 15 to 25 knots late. A slight
chance of showers through early afternoon, then numerous showers
and isolated thunderstorms by mid afternoon. Waves building to
1 to 3 feet.
.WEDNESDAY NIGHT...East winds 15 to 25 knots becoming northeast
10 to 20 knots after midnight. Showers and isolated
thunderstorms. Waves building to 2 to 4 feet, then subsiding to
1 to 3 feet.
.THURSDAY...North winds 10 to 20 knots backing northwest by mid
afternoon. A chance of showers. Waves subsiding to calm to
2 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots backing north. A chance
of showers. Waves calm to 2 feet.
.SATURDAY...North winds 10 to 20 knots backing northwest.
Scattered thunderstorms. A chance of showers. Waves calm to
2 feet.

$$

LSZ266-271615-
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-
401 AM EDT Tue Jun 27 2017

.EARLY THIS MORNING...West winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...West winds 5 to 15 knots backing southwest in the
afternoon. Waves building to 1 to 3 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots backing southeast in the
afternoon, then increasing to 15 to 25 knots late. A slight
chance of rain showers through early afternoon, then numerous
rain showers and isolated thunderstorms by mid afternoon. Waves
building to 1 to 3 feet.
.WEDNESDAY NIGHT...Southeast winds 15 to 25 knots becoming east
10 to 20 knots after midnight. Rain showers and isolated
thunderstorms. Waves building to 2 to 4 feet.
.THURSDAY...North winds 10 to 20 knots becoming northwest 15 to
25 knots by mid afternoon. A chance of rain showers. Waves
subsiding to calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots backing north. A chance
of rain showers. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots increasing to 10 to
20 knots. A chance of rain showers and scattered thunderstorms.
Waves calm to 2 feet.

$$

LSZ267-271615-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 AM EDT Tue Jun 27 2017

.EARLY THIS MORNING...West winds 10 to 20 knots. Waves calm to
2 feet.
.TODAY...West winds 5 to 15 knots backing southwest in the
afternoon. Waves calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming south 10 to
20 knots after midnight, then veering southwest late. Waves calm
to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots increasing to 15 to
25 knots late. Numerous showers by mid afternoon. Waves building
to 1 to 3 feet.
.WEDNESDAY NIGHT...Southeast winds 15 to 25 knots backing east
after midnight. Showers and isolated thunderstorms. Waves 1 to
3 feet.
.THURSDAY...Northeast winds 10 to 20 knots backing northwest by
mid afternoon. A chance of showers. Waves subsiding to calm to
2 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots. A chance of rain
showers. Waves calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots increasing to 10 to
20 knots. A chance of rain showers and scattered thunderstorms.
Waves calm to 2 feet.

$$

LSZ261-271615-
MAFOR 2709/
Superior West 14510 14410. Waves 1 to 3 feet.

Superior North Central 11610 11510 13520 11510 11410 11510. Waves
1 to 3 feet.

Superior South Central 12610 11510 11500 11400 13410. Waves 2
feet or less.

Superior East 12600 11500 13510 12410. Waves 1 to 2 feet.

$$

Voss

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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