Great Lakes Forecast
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FZUS63 KMQT 110801
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 AM EDT Fri Aug 11 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 pressure over eastern Upper Michigan
will reach eastern Ontario today while deepening to 29.8 inches.
A 30.1 inch high pressure over the northern Plains Saturday
morning will move over the western Great Lakes Sunday, then remain
nearly stationary through Tuesday.

LSZ162-111615-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 AM EDT Fri Aug 11 2017 /301 AM CDT Fri Aug 11 2017/

.EARLY THIS MORNING...North winds 5 to 15 knots. Waves 2 to
4 feet.
.TODAY...North winds 5 to 15 knots backing southwest in the
afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots veering northwest late.
Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots backing southwest in
the afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing south. Waves calm to
2 feet.

$$

LSZ263-111615-
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 Fri Aug 11 2017

.EARLY THIS MORNING...North winds 10 to 20 knots. Waves 3 to
5 feet occasionally to 7 feet.
.TODAY...North winds 5 to 15 knots backing west late. Waves
subsiding to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering northwest late. Waves
calm to 2 feet.
.SATURDAY...Northwest winds less than 10 knots becoming west 5 to
15 knots in the afternoon, then backing southwest late. Waves
calm to 2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots. A slight chance of
showers through midnight. Waves calm to 2 feet.
.SUNDAY...West winds less than 10 knots becoming southwest 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing south. Waves calm to
2 feet.

$$

LSZ264-111615-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 AM EDT Fri Aug 11 2017

.EARLY THIS MORNING...North winds 10 to 20 knots. Waves 3 to
5 feet occasionally to 7 feet.
.TODAY...North winds 10 to 20 knots. Patchy fog through early
afternoon. Waves subsiding to 1 to 3 feet.
.TONIGHT...West winds 5 to 15 knots veering northwest after
midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots backing west in the
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. A slight chance of showers and thunderstorms
through midnight. Waves calm to 2 feet.
.SUNDAY...West winds less than 10 knots becoming southwest 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest. Waves calm
to 2 feet.

$$

LSZ265-111615-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 AM EDT Fri Aug 11 2017

.EARLY THIS MORNING...North winds 15 to 25 knots. Areas of fog.
Isolated showers. Waves 2 to 4 feet.
.TODAY...North winds 15 to 25 knots. Areas of fog through early
afternoon. Isolated showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.TONIGHT...Northwest winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots backing west in the
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots. Waves calm to
2 feet.
.SUNDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves calm to 2 feet.
.MONDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots becoming southwest 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ266-111615-
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 Fri Aug 11 2017

.EARLY THIS MORNING...North winds 10 to 20 knots. Areas of fog.
Scattered showers. Waves 3 to 5 feet occasionally to 7 feet.
.TODAY...North winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. Patchy fog through early afternoon. Isolated
showers. Waves subsiding to 2 to 4 feet.
.TONIGHT...North winds 10 to 20 knots backing northwest late.
Isolated showers. Waves subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 10 to 20 knots backing west late.
Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots. A slight chance of
showers through midnight. Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest. Waves calm
to 2 feet.

$$

LSZ267-111615-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 AM EDT Fri Aug 11 2017

.EARLY THIS MORNING...East winds 5 to 15 knots. Areas of fog.
Scattered showers. Waves calm to 2 feet.
.TODAY...Northeast winds 5 to 15 knots backing north in the
afternoon, then increasing to 10 to 20 knots late. Areas of fog
through early afternoon. Scattered showers. Waves building to
2 to 4 feet.
.TONIGHT...North winds 15 to 25 knots. Scattered showers. Waves
subsiding to 1 to 3 feet.
.SATURDAY...North winds 15 to 25 knots becoming northwest 10 to
20 knots in the afternoon. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots backing southwest after
midnight. Waves calm to 2 feet.
.MONDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots.
Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest. Waves calm
to 2 feet.

$$

LSZ261-111615-
MAFOR 1109/
Superior West 12810 11710 11600 12500 12600. Waves 2 to 4 feet
subsiding to 1 to 3 feet today. Waves 1 to 2 feet tonight.

Superior North Central 11830 13820 11710 11600 11710 11700.
Patchy fog this morning. Waves 3 to 5 feet subsiding to 2 to 4
feet today. Waves 1 to 3 feet tonight.

Superior South Central 12833 13830 12720 11710. Scattered showers
this morning. Waves 2 to 4 feet building to 3 to 5 feet today.
Waves 2 to 4 feet subsiding to 1 to 3 feet tonight.

Superior East 12123 13820 12830 11820. Patchy fog early this
morning. Patchy fog. Scattered showers this morning. Scattered
showers tonight. Waves 1 to 3 feet today. Waves 2 to 4 feet
tonight.

$$

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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