Great Lakes Forecast
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FZUS63 KMQT 261934
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
334 PM EDT Wed Jul 26 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 30.1 inch ridge will build southeastward across the
Upper Great Lakes tonight and persist through the weekend. A low
pressure trough of 29.9 inches will move across Lakes Superior
Sunday night into Monday.

LSZ162-270345-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
334 PM EDT Wed Jul 26 2017 /234 PM CDT Wed Jul 26 2017/

.LATE THIS AFTERNOON...West winds 5 to 15 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.THURSDAY...Northeast winds 5 to 15 knots veering east in the
afternoon, then backing northeast late. A slight chance of
showers by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Northeast winds 5 to 15 knots becoming
northwest less than 10 knots after midnight. Waves calm to
2 feet.
.FRIDAY...West winds 5 to 15 knots backing east by mid afternoon.
Waves calm to 2 feet.
.FRIDAY NIGHT...East winds less than 10 knots veering west 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 veering west. Waves calm
to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots backing north. Waves calm
to 2 feet.

$$

LSZ263-270345-
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-
334 PM EDT Wed Jul 26 2017

.LATE THIS AFTERNOON...West winds 10 to 20 knots. Waves 1 to
3 feet.
.TONIGHT...West winds 5 to 15 knots becoming north less than
10 knots after midnight, then veering northeast late. Waves
subsiding to calm to 2 feet.
.THURSDAY...East winds less than 10 knots backing northeast in
the afternoon, then increasing to 5 to 15 knots late. Waves calm
to 2 feet.
.THURSDAY NIGHT...North winds 5 to 15 knots becoming northwest
less than 10 knots after midnight, then veering north late. Waves
calm to 2 feet.
.FRIDAY...Northeast winds less than 10 knots. Waves calm to
2 feet.
.FRIDAY NIGHT...East winds less than 10 knots veering southwest
after midnight. Waves calm to 2 feet.
.SATURDAY...Southwest 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 calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots. Waves building to 1 to
3 feet.

$$

LSZ264-270345-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
334 PM EDT Wed Jul 26 2017

.LATE THIS AFTERNOON...West winds 10 to 20 knots. Waves 1 to
3 feet building to 2 to 4 feet.
.TONIGHT...West winds 5 to 15 knots becoming north less than
10 knots after midnight, then veering northeast late. Waves
subsiding to calm to 2 feet.
.THURSDAY...Northeast winds less than 10 knots becoming west 5 to
15 knots late. Waves calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots becoming
northeast less than 10 knots late. Waves calm to 2 feet.
.FRIDAY...East winds less than 10 knots veering south by mid
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Southwest winds less than 10 knots. Waves calm to
2 feet.
.SATURDAY...Southwest 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 calm to 2 feet.
.MONDAY...East winds 5 to 15 knots. Waves building to 1 to
3 feet.

$$

LSZ265-270345-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
334 PM EDT Wed Jul 26 2017

.LATE THIS AFTERNOON...West winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...West winds 5 to 15 knots veering north late. Waves
calm to 2 feet.
.THURSDAY...Northeast winds 5 to 15 knots backing north late.
Waves calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots becoming north
10 to 20 knots after midnight, then diminishing to 5 to 15 knots
late. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.SATURDAY...Southwest winds 5 to 15 knots backing southeast by
mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots veering west. Waves calm
to 2 feet.
.MONDAY...East winds 10 to 20 knots. Waves building to 1 to
3 feet.

$$

LSZ266-270345-
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-
334 PM EDT Wed Jul 26 2017

.LATE THIS AFTERNOON...West winds 5 to 15 knots. Waves 1 to
3 feet building to 2 to 4 feet.
.TONIGHT...West winds 5 to 15 knots veering north late. Waves
subsiding to calm to 2 feet.
.THURSDAY...Northeast winds 5 to 15 knots backing northwest late.
Waves calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots veering
northeast late. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots backing north by mid
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots backing west after
midnight. Waves calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots veering west. Waves calm
to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots becoming east 10 to
20 knots. Waves building to 1 to 3 feet.

$$

LSZ267-270345-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
334 PM EDT Wed Jul 26 2017

.LATE THIS AFTERNOON...West winds 5 to 15 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering north late. Waves
calm to 2 feet.
.THURSDAY...Northeast winds 5 to 15 knots becoming northwest
10 to 20 knots in the afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...North winds 10 to 20 knots veering northeast
after midnight. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots backing northwest by mid
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.SATURDAY...West winds 5 to 15 knots veering northwest by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots backing southwest
after midnight. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...North winds 5 to 15 knots veering southeast. Waves calm
to 2 feet.

$$

LSZ261-270345-
MAFOR 2621/
Superior West 11610 11600 12800 12100 12200. Waves 2 feet or
less.

Superior North Central 12620 11700 11800 12100 11800 11700. Waves
2 to 4 feet subsiding to 1 to 3 feet tonight. Waves 2 feet or
less Thursday.

Superior South Central 12610 11700 12800 12100 11800. Waves 2
feet or less.

Superior East 13600 11800 12100 11800 11710. Waves 1 to 3 feet.

$$

07

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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