Great Lakes Forecast
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FZUS63 KMQT 271951
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
351 PM EDT Thu Jul 27 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 30.0 inch ridge of high pressure will remain
centered over the Upper Great Lakes into Monday. A low pressure
trough of 29.9 inches will move across Lake Superior late Monday
into Tuesday.

LSZ162-280400-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
351 PM EDT Thu Jul 27 2017 /251 PM CDT Thu Jul 27 2017/

.LATE THIS AFTERNOON...East winds 5 to 15 knots. A slight chance
of showers. Waves calm to 2 feet.
.TONIGHT...Northeast winds 5 to 15 knots diminishing to less than
10 knots after midnight. Waves calm to 2 feet.
.FRIDAY...Southeast winds less than 10 knots backing east in the
afternoon, then increasing to 5 to 15 knots late in the
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...East winds 5 to 15 knots backing northeast after
midnight. Waves calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.MONDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots becoming north 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ263-280400-
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-
351 PM EDT Thu Jul 27 2017

.LATE THIS AFTERNOON...Northeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...East winds less than 10 knots backing northeast after
midnight, then veering east late. Waves calm to 2 feet.
.FRIDAY...West winds less than 10 knots veering northeast in the
afternoon, then veering east late in the afternoon. Waves calm to
2 feet.
.FRIDAY NIGHT...East winds less than 10 knots veering south late.
Waves calm to 2 feet.
.SATURDAY...South winds less than 10 knots becoming southwest
5 to 15 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.MONDAY...Southwest winds less than 10 knots increasing to 5 to
15 knots. Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots veering north. Waves
calm to 2 feet.

$$

LSZ264-280400-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
351 PM EDT Thu Jul 27 2017

.LATE THIS AFTERNOON...Southwest winds less than 10 knots. Waves
calm to 2 feet.
.TONIGHT...West winds less than 10 knots veering northwest after
midnight. Waves calm to 2 feet.
.FRIDAY...East winds less than 10 knots veering south late in the
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...South winds less than 10 knots. Waves calm to
2 feet.
.SATURDAY...South winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots. Waves building to 1 to
3 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.MONDAY...Southwest winds less than 10 knots becoming south 5 to
15 knots. Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots veering north. Waves
calm to 2 feet.

$$

LSZ265-280400-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
351 PM EDT Thu Jul 27 2017

.LATE THIS AFTERNOON...Northeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Northwest winds less than 10 knots increasing to 5 to
15 knots after midnight, then becoming north less than 10 knots
late. Waves calm to 2 feet.
.FRIDAY...North winds less than 10 knots becoming east 5 to
15 knots in the afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots veering southwest
late. Waves calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 15 knots becoming
southwest 10 to 20 knots after 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. Waves calm to
2 feet.
.MONDAY...Southeast winds 5 to 15 knots veering south. Waves calm
to 2 feet.
.TUESDAY...West winds 10 to 20 knots veering northwest. Waves
calm to 2 feet.

$$

LSZ266-280400-
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-
351 PM EDT Thu Jul 27 2017

.LATE THIS AFTERNOON...Northwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then backing north late in the
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...North winds 5 to 15 knots veering south after
midnight, then veering southwest late. Waves calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots backing south after
midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots veering north. A chance of
showers and thunderstorms. Waves calm to 2 feet.

$$

LSZ267-280400-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
351 PM EDT Thu Jul 27 2017

.LATE THIS AFTERNOON...Northwest winds 10 to 20 knots. Waves calm
to 2 feet.
.TONIGHT...Northwest winds 10 to 20 knots becoming north 5 to
15 knots after midnight, then veering northeast late. Waves calm
to 2 feet.
.FRIDAY...East winds 5 to 15 knots becoming northeast less than
10 knots in the afternoon, then becoming north 5 to 15 knots late
in the afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...North winds 5 to 15 knots backing northwest after
midnight. Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots veering west by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight. Waves calm to 2 feet.
.MONDAY...North winds 5 to 15 knots veering south. Waves calm to
2 feet.
.TUESDAY...Southwest winds 5 to 15 knots becoming north 10 to
20 knots. A chance of showers and thunderstorms. Waves calm to
2 feet.

$$

LSZ261-280400-
MAFOR 2721/
Superior West 11200 13100 12200 11300 11200. Waves 1 foot or
less.

Superior North Central 11500 11600 12700 11100 13300. Waves 1
foot or less.

Superior South Central 11800 12700 13800 12100. Waves 1 foot or
less.

Superior East 11720 11710 11810 13100 11200 11800. Waves 2 feet
or less.

$$

Kluber

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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