Great Lakes Forecast
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FZUS63 KMQT 140757
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
357 AM EDT Fri Jul 14 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 Lake Huron will move east today.
High pressure of 30.2 inches over Minnesota will build over the
Upper Great Lakes today. As the high settles south on Saturday, a
low pressure trough of 29.9 inches will quickly track southeast
through Lake Superior. By Sunday morning, the trough will move
southeast of Lake Superior as high pressure of 30.1 inches builds
back into the area and then lingers through Monday. A 29.8 inch
trough will cross Lake Superior Tuesday as the high moves off the
East Coast.

LSZ162-141600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
357 AM EDT Fri Jul 14 2017 /257 AM CDT Fri Jul 14 2017/

.EARLY THIS MORNING...Northwest winds 5 to 15 knots. Patchy fog.
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. A slight chance of
showers and thunderstorms after midnight. Waves calm to 2 feet.
.SATURDAY...Southwest winds 10 to 20 knots veering west in the
afternoon. A slight chance of showers through early afternoon.
Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots veering west. A chance of
showers. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots veering northwest. Waves calm
to 2 feet.

$$

LSZ263-141600-
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-
357 AM EDT Fri Jul 14 2017

.EARLY THIS MORNING...Northwest winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...West winds less than 10 knots becoming southwest 5 to
15 knots in the afternoon. Waves building to 1 to 3 feet.
.TONIGHT...Southwest winds 5 to 15 knots. Waves subsiding to calm
to 2 feet.
.SATURDAY...Southwest winds 10 to 20 knots becoming west 5 to
15 knots in the afternoon. A slight chance of showers. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
.SATURDAY NIGHT...North winds 5 to 15 knots veering northeast
after midnight. Waves calm to 2 feet.
.SUNDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds less than 10 knots becoming south 5 to
15 knots after midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots veering northwest. A chance
of showers. Waves calm to 2 feet.

$$

LSZ264-141600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
357 AM EDT Fri Jul 14 2017

.EARLY THIS MORNING...North winds less than 10 knots. Waves calm
to 2 feet.
.TODAY...Northwest winds 5 to 15 knots backing southwest late.
Waves calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots. Waves building to 1 to
3 feet.
.SATURDAY...Southwest winds 10 to 20 knots becoming west 5 to
15 knots in the afternoon, then veering northwest late. A slight
chance of showers. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...North winds 5 to 15 knots. Waves building to
1 to 3 feet.
.SUNDAY...North winds 5 to 15 knots backing west by mid
afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...West winds less than 10 knots backing south after
midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots. A chance of showers. Waves
building to 1 to 3 feet.
.TUESDAY...West winds 5 to 15 knots. Waves subsiding to calm to
2 feet.

$$

LSZ265-141600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
357 AM EDT Fri Jul 14 2017

.EARLY THIS MORNING...Northwest winds 5 to 15 knots. Patchy fog.
Isolated showers. Waves calm to 2 feet.
.TODAY...Northwest winds 5 to 15 knots backing west late. Waves
calm to 2 feet.
.TONIGHT...West winds less than 10 knots becoming southwest 5 to
15 knots after midnight. Waves calm to 2 feet.
.SATURDAY...Southwest winds 10 to 20 knots veering northwest
late. A slight chance of showers. Waves calm to 2 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Waves building to 1 to 3 feet.
.SUNDAY...North winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots backing south after
midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.

$$

LSZ266-141600-
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-
357 AM EDT Fri Jul 14 2017

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

$$

LSZ267-141600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
357 AM EDT Fri Jul 14 2017

.EARLY THIS MORNING...North winds 5 to 15 knots. Patchy fog.
Scattered showers. Waves calm to 2 feet.
.TODAY...North winds 5 to 15 knots becoming northwest 10 to
20 knots in the afternoon, then backing west late. Patchy fog
through early afternoon. Isolated showers through early
afternoon. Waves calm to 2 feet.
.TONIGHT...West winds 10 to 20 knots becoming southwest less than
10 knots after midnight, then increasing to 5 to 15 knots late.
Waves calm to 2 feet.
.SATURDAY...Southwest winds 10 to 20 knots veering north late. A
chance of showers by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots. A slight chance of
showers through midnight. Waves building to 1 to 3 feet.
.SUNDAY...North winds 10 to 20 knots backing northwest by mid
afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots becoming east 5 to
15 knots after midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots veering south. Waves
building to 1 to 3 feet.
.TUESDAY...Southwest winds 10 to 20 knots veering northwest. A
chance of showers. Waves subsiding to calm to 2 feet.

$$

LSZ261-141600-
MAFOR 1409/
Superior West 11700 11600 14500 12510. Patchy fog early this
morning. Waves 1 to 2 feet.

Superior North Central 11800 11700 11600 11610 14510. Waves 2
feet or less today. Waves 1 to 3 feet tonight.

Superior South Central 13710 11700 12600 12500. Waves 2 feet or
less.

Superior East 12800 11700 12710 11610 12500. Patchy fog this
morning. Scattered showers early this morning. Waves 1 to 2 feet.

$$

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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