Great Lakes Forecast
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FZUS63 KMQT 270143
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
943 PM EDT Mon Jun 26 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 29.9 inch low over Georgian Bay will move to the
southeast and dissipate overnight. A 30.3 inch high pressure over
the Northern Plains will shift over the Ohio Valley Tuesday 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.

LSZ162-270945-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
943 PM EDT Mon Jun 26 2017 /843 PM CDT Mon Jun 26 2017/

.REST OF TONIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.TUESDAY...Southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. Waves building to 1 to 3 feet, then
subsiding to calm to 2 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots. A slight chance of
showers after midnight. Waves calm to 2 feet.
.WEDNESDAY...East winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. Showers likely and a slight chance of
thunderstorms. Waves building to 1 to 3 feet.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 knots backing north
after midnight. A chance of showers. Waves 1 to 3 feet.
.THURSDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. A chance of showers. Waves subsiding
to calm to 2 feet.
.THURSDAY NIGHT...East winds 5 to 15 knots veering south after
midnight. Waves calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots backing northeast. A chance of
rain showers. Waves calm to 2 feet.
.SATURDAY...North winds 10 to 20 knots diminishing to 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ263-270945-
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 PM EDT Mon Jun 26 2017

.REST OF TONIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.TUESDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots late. Waves building to 1 to 3 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots backing south
late. A slight chance of showers after midnight. Waves subsiding
to calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots backing east by mid
afternoon. A chance of showers through early afternoon, then
showers likely and a slight chance of thunderstorms by mid
afternoon. Waves building to 1 to 3 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots backing northeast
after midnight. Showers likely through midnight, then a chance of
showers after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing west by mid
afternoon. A chance of showers. Waves subsiding to 1 to 3 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots backing south after
midnight. A chance of showers. Waves subsiding to calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots. A chance of rain showers.
Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots veering north. A chance
of rain showers. Waves calm to 2 feet.

$$

LSZ264-270945-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
943 PM EDT Mon Jun 26 2017

.REST OF TONIGHT...West winds 5 to 15 knots. Waves 1 to 3 feet
subsiding to calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest in the
afternoon. Waves building to 1 to 3 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots. Waves subsiding
to calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots backing east by mid
afternoon. A chance of rain showers. Waves building to 1 to
3 feet.
.WEDNESDAY NIGHT...East winds 10 to 20 knots. Rain showers likely
through midnight, then a chance of rain showers after midnight.
Waves building to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...North winds 5 to 15 knots backing northwest by mid
afternoon. A chance of rain showers. Waves subsiding to 1 to
3 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots backing west
after midnight. A chance of rain showers. Waves subsiding to calm
to 2 feet.
.FRIDAY...Southeast winds 5 to 15 knots veering south. A chance
of rain showers. Waves calm to 2 feet.
.SATURDAY...East winds 5 to 15 knots backing north. A chance of
rain showers. Waves calm to 2 feet.

$$

LSZ265-270945-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
943 PM EDT Mon Jun 26 2017

.REST OF TONIGHT...West winds 10 to 20 knots. Waves calm to
2 feet.
.TUESDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight, then backing south late. Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots backing southeast by mid
afternoon. A slight chance of showers through early afternoon,
then showers likely and a slight chance of 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. Showers. Waves building to 2 to
4 feet.
.THURSDAY...Northwest winds 10 to 20 knots. A chance of showers.
Waves subsiding to 1 to 3 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. A chance of showers. Waves subsiding to calm to
2 feet.
.FRIDAY...East winds 10 to 20 knots veering southeast. A chance
of showers. Waves calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots veering northwest. A chance
of showers. Waves calm to 2 feet.

$$

LSZ266-270945-
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 PM EDT Mon Jun 26 2017

.REST OF TONIGHT...West winds 5 to 15 knots increasing to 10 to
20 knots late. Waves 1 to 3 feet subsiding to calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest late. Waves
building to 1 to 3 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then veering southwest late. Waves
subsiding to calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots backing southeast by mid
afternoon. A chance of rain showers. A slight chance of
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. Waves building to
3 to 5 feet occasionally to 7 feet.
.THURSDAY...North winds 10 to 20 knots backing northwest by mid
afternoon. A chance of rain showers. Waves subsiding to 1 to
3 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. A chance of rain showers. Waves subsiding to calm
to 2 feet.
.FRIDAY...East winds 10 to 20 knots. A chance of rain showers.
Waves calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots veering northwest. A chance
of rain showers. Waves calm to 2 feet.

$$

LSZ267-270945-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
943 PM EDT Mon Jun 26 2017

.REST OF TONIGHT...Northwest winds 10 to 20 knots backing west
after midnight. Waves 1 to 3 feet subsiding to calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest late. Waves
calm to 2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots veering southwest
late. Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots backing southeast by mid
afternoon. A chance of showers by mid afternoon. Waves calm to
2 feet.
.WEDNESDAY NIGHT...Southeast winds 15 to 25 knots backing east
after midnight. Showers likely. Waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet.
.THURSDAY...East 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. A chance of
rain showers. Waves calm to 2 feet.
.FRIDAY...North winds 10 to 20 knots veering northeast. A chance
of rain showers. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots. A chance of rain
showers. Waves calm to 2 feet.

$$
LSZ261-270945-
MAFOR 2703/
Superior West 11610 11600 11610 14510 11410. Waves 1 to 2 feet.

Superior North Central 14610 13520 11510. Waves 1 to 3 feet.

Superior South Central 14610 11610 11600 11500 11410. Waves 1 to
2 feet.

Superior East 11710 11700 13600 12500 11510. Waves 1 to 3 feet.

$$

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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