Great Lakes Forecast
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FZUS63 KMQT 240758
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
358 AM EDT Sat Jun 24 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...As a 29.2 inch low over Northern Quebec drifts to the
Canadian Maritimes through Sunday, 29.9 inch low pressure
troughing will remain across the Upper Great Lakes. High pressure
ridging of 30.2 inches will build into the Northern Plains, and
then shifts east into the Upper Great Lakes into Tuesday. Tuesday
into Wednesday, high pressure of 30.2 inches will push southeast
into the Mid Atlantic states as low pressure of 29.5 inches lifts
out of the Northern Plains and heads towards the Upper Great
Lakes. This low will weaken slightly to 29.6 inches and reach
Quebec by Thursday.

LSZ162-241600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
358 AM EDT Sat Jun 24 2017 /258 AM CDT Sat Jun 24 2017/

.EARLY THIS MORNING...West winds 5 to 15 knots. A chance of rain
showers. Waves calm to 2 feet.
.TODAY...West winds 5 to 15 knots becoming northwest 10 to
20 knots late. A chance of rain showers. A slight chance of
thunderstorms by mid afternoon. Waves calm to 2 feet.
.TONIGHT...Northwest winds 10 to 20 knots. Patchy fog. A chance
of rain showers. Waves calm to 2 feet.
.SUNDAY...Northwest winds 5 to 15 knots veering north in the
afternoon. A chance of rain showers. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A chance of rain showers. Waves calm to
2 feet.
.MONDAY...West winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...Southwest winds 10 to 20 knots backing southeast. A
chance of showers. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots veering west. Showers
likely and a chance of thunderstorms. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.

$$

LSZ263-241600-
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-
358 AM EDT Sat Jun 24 2017

.EARLY THIS MORNING...West winds 5 to 15 knots. A chance of rain
showers. Waves 1 to 3 feet.
.TODAY...West winds 5 to 15 knots. A chance of rain showers. A
slight chance of thunderstorms by mid afternoon. Waves subsiding
to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots. Areas of fog. A slight
chance of rain showers. Waves calm to 2 feet.
.SUNDAY...North winds 5 to 15 knots. A chance of rain showers.
Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots. A chance of rain
showers. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots backing south. A chance
of showers. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots veering south. A
chance of showers. A chance of thunderstorms. Showers likely.
Waves building to 2 to 4 feet.

$$

LSZ264-241600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
358 AM EDT Sat Jun 24 2017

.EARLY THIS MORNING...North winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...West winds less than 10 knots increasing to 5 to
15 knots in the afternoon. A slight chance of rain showers by mid
afternoon. Waves calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering northeast late. A
slight chance of rain showers. Patchy fog after midnight. Waves
calm to 2 feet.
.SUNDAY...Northeast winds 5 to 15 knots backing northwest late. A
slight chance of rain showers. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots. A chance of rain
showers. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots. Waves building to 1 to
3 feet.
.MONDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to calm
to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots backing south. Waves
calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Rain showers likely. Waves building to 3 to 5 feet
occasionally to 7 feet.

$$

LSZ265-241600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
358 AM EDT Sat Jun 24 2017

.EARLY THIS MORNING...Northwest winds 10 to 20 knots. Waves calm
to 2 feet.
.TODAY...West winds 5 to 15 knots increasing to 10 to 20 knots in
the afternoon. A slight chance of showers. Waves calm to 2 feet.
.TONIGHT...West winds 10 to 20 knots. A slight chance of rain
showers. Waves calm to 2 feet.
.SUNDAY...Northwest winds 10 to 20 knots veering north in the
afternoon. A slight chance of rain showers. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots. A chance of rain today.
Chance of showers through early evening tonight showers. Waves
calm to 2 feet.
.MONDAY...Northwest winds 10 to 20 knots backing west by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 10 to 20 knots. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots backing south. Waves calm to
2 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots becoming south 15 to
25 knots. Showers likely and a chance of thunderstorms. Waves
building to 2 to 4 feet.

$$

LSZ266-241600-
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-
358 AM EDT Sat Jun 24 2017

.EARLY THIS MORNING...Northwest winds 5 to 15 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TODAY...Northwest winds 5 to 15 knots increasing to 10 to
20 knots late. A slight chance of rain showers by mid afternoon.
Waves calm to 2 feet.
.TONIGHT...Northwest winds 10 to 20 knots. A slight chance of
rain showers. Waves calm to 2 feet.
.SUNDAY...North winds 10 to 20 knots backing northwest in the
afternoon. A slight chance of rain showers. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots. A chance of rain
showers. Waves calm to 2 feet.
.MONDAY...Northwest winds 10 to 20 knots backing west by mid
afternoon. A chance of rain showers through early afternoon.
Waves building to 1 to 3 feet.
.MONDAY NIGHT...West winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots backing south. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
.WEDNESDAY...South winds 15 to 25 knots. A chance of
thunderstorms. Rain showers likely. Waves building to 3 to 5 feet
occasionally to 7 feet.

$$

LSZ267-241600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
358 AM EDT Sat Jun 24 2017

.EARLY THIS MORNING...West winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...West winds 5 to 15 knots becoming northwest 10 to
20 knots late. A slight chance of rain showers by mid afternoon.
Waves calm to 2 feet.
.TONIGHT...Northwest winds 10 to 20 knots. Patchy fog. A chance
of rain showers. Waves calm to 2 feet.
.SUNDAY...North winds 10 to 20 knots backing northwest in the
afternoon. A slight chance of rain showers through early
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots. A chance of rain
showers. Waves calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots becoming west 10 to
20 knots by mid afternoon. A chance of rain showers through early
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots backing southwest. Waves
calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots increasing to 15 to
25 knots. A chance of showers. Showers. Waves building today.
Chance of showers through early evening tonight to 3 to
5 feet occasionally to 7 feet.

$$

LSZ261-241600-
MAFOR 2409/
Superior West 11620 13610 13700 11703. Chance of showers. Waves 1
to 3 feet.

Superior North Central 11800 11700 13600 12610 11710. Waves 1 to
2 feet.

Superior South Central 11710 13700 14610. Waves 1 to 3 feet.

Superior East 14700 13710 11700. Patchy fog overnight. Chance of
showers overnight. Waves 1 to 2 feet.

$$

Ritzman

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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