Great Lakes Forecast
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FZUS63 KMQT 221353
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
953 AM EDT Fri Jun 22 2018

For waters beyond 5 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 high pressure ridge is located over
northern New England this morning. A 29.7 inch low will track
across the southern Great Lakes tonight into Saturday. As the low
moves to New England on Sunday, a 30.3 inch high pressure ridge
will build over the Upper Great Lakes and remain nearly stationary
through Monday. The high will shift into the southern Great Lakes
Tuesday. Low pressure trough of 29.7 inches moves into the
eastern Dakotas Tuesday afternoon and advances toward the upper
Great Lakes by Wednesday morning.

LSZ162-222200-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
953 AM EDT Fri Jun 22 2018 /853 AM CDT Fri Jun 22 2018/

.REST OF TODAY...South winds less than 10 knots veering southwest
in the afternoon, then becoming east 5 to 15 knots late. Waves
calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots becoming northeast less than
10 knots after midnight. Waves calm to 2 feet.
.SATURDAY...Northeast winds less than 10 knots. A slight chance
of showers by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. A chance of showers. Waves
building to 2 to 4 feet.
.SUNDAY...Northeast winds 10 to 20 knots. Waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SUNDAY NIGHT...Northeast winds 5 to 15 knots veering east after
midnight. Waves subsiding to calm to 2 feet.
.MONDAY...East winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots. A chance of showers. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.

$$

LSZ263-222200-
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-
953 AM EDT Fri Jun 22 2018

.REST OF TODAY...South winds less than 10 knots becoming
southwest 5 to 15 knots in the afternoon, then backing northeast
late. Waves calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots diminishing to less than
10 knots after midnight. Waves calm to 2 feet.
.SATURDAY...Northeast winds less than 10 knots increasing to 5 to
15 knots late. A slight chance of showers by mid afternoon. Waves
calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. A slight chance of showers. Waves
building to 2 to 4 feet.
.SUNDAY...Northeast winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SUNDAY NIGHT...Northeast winds 5 to 15 knots veering east after
midnight. Waves subsiding to calm to 2 feet.
.MONDAY...East winds 5 to 15 knots veering southeast. Waves calm
to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots. A chance of showers.
Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.

$$

LSZ264-222200-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
953 AM EDT Fri Jun 22 2018

.REST OF TODAY...South winds 5 to 15 knots backing southeast
late. Waves calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots backing east in the
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 10 to 20 knots. A slight chance
of rain showers. Waves building to 2 to 4 feet.
.SUNDAY...Northeast winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...North winds 5 to 15 knots veering east after
midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Waves building to 1 to 3 feet.
.TUESDAY...Southeast winds 10 to 20 knots. A chance of showers.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet.

$$

LSZ265-222200-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
953 AM EDT Fri Jun 22 2018

.REST OF TODAY...Southeast winds 5 to 15 knots backing east in
the afternoon, then increasing to 10 to 20 knots late. Waves calm
to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots backing northeast late.
Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 5 to 15 knots. Waves building
to 1 to 3 feet.
.SUNDAY...Northeast winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...North winds 5 to 15 knots veering east after
midnight. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots becoming southeast 10 to
20 knots. Waves calm to 2 feet.
.TUESDAY...Southeast winds 10 to 20 knots. A chance of showers.
Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.

$$

LSZ266-222200-
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-
953 AM EDT Fri Jun 22 2018

.REST OF TODAY...Southeast winds 5 to 15 knots backing east in
the afternoon. Waves calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots veering southeast after
midnight. Waves calm to 2 feet.
.SATURDAY...East winds 5 to 15 knots backing northeast in the
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots veering northeast
after midnight. Waves building to 2 to 4 feet.
.SUNDAY...Northeast winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...North winds 5 to 15 knots veering east after
midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Waves building to 1 to 3 feet.
.TUESDAY...Southeast winds 10 to 20 knots. A chance of showers.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet.

$$

LSZ267-222200-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
953 AM EDT Fri Jun 22 2018

.REST OF TODAY...Southeast winds 5 to 15 knots backing east in
the afternoon, then becoming northeast 10 to 20 knots late. Waves
calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots veering southeast after
midnight, then backing east late. Waves calm to 2 feet.
.SATURDAY...East winds 5 to 15 knots backing north late. Waves
calm to 2 feet.
.SATURDAY NIGHT...North winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. Waves building to 1 to 3 feet.
.SUNDAY...Northeast winds 10 to 20 knots backing north by mid
afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...North winds 10 to 20 knots becoming east 5 to
15 knots after midnight. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots veering south. Waves calm to
2 feet.
.TUESDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots. A chance of showers. Waves building to 2 to 4 feet.

$$
LSZ261-222200-
MAFOR 2215/
Superior West 12500 11100 11200 14100. Waves 1 foot or less.

Superior North Central 11400 15300 11300. Waves 1 foot or less.

Superior South Central 11300 12200 12300 11400 12300. Waves
around 1 foot.

Superior East 11300 13200 13300 11200. Waves 1 foot or less.

$$

Titus

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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