Great Lakes Forecast
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FZUS63 KMQT 261335
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
935 AM 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 low pressure trough of 29.8 inches will move across
Lake Superior today. A 30.0 inch ridge will build southeastward
across the Upper Great Lakes on Thursday, and then persist through
the weekend.

LSZ162-262145-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
935 AM EDT Wed Jul 26 2017 /835 AM CDT Wed Jul 26 2017/

.REST OF TODAY...Southwest winds 5 to 15 knots veering west late.
Waves calm to 2 feet building to 1 to 3 feet, then 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. A slight chance of
showers by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots. 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 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.SATURDAY...East winds 5 to 15 knots veering southwest. Waves
calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ263-262145-
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-
935 AM EDT Wed Jul 26 2017

.REST OF TODAY...West winds 5 to 15 knots. Waves calm to 2 feet
building to 1 to 3 feet.
.TONIGHT...West winds 5 to 15 knots veering north after midnight.
Waves subsiding to calm to 2 feet.
.THURSDAY...Northeast winds less than 10 knots backing north
late. Waves calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots becoming west
less than 10 knots after midnight. Waves calm to 2 feet.
.FRIDAY...Northeast winds less than 10 knots backing north by mid
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Southwest winds less than 10 knots. Waves calm to
2 feet.
.SATURDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots backing southwest. Waves calm
to 2 feet.

$$

LSZ264-262145-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
935 AM EDT Wed Jul 26 2017

.REST OF TODAY...West winds 10 to 20 knots. Waves 1 to 3 feet.
.TONIGHT...West winds 5 to 15 knots veering north after midnight.
Waves subsiding to calm to 2 feet.
.THURSDAY...North winds less than 10 knots backing northwest
late. Waves calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots becoming
northeast less than 10 knots after midnight. 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 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots veering west. Waves calm
to 2 feet.

$$

LSZ265-262145-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
935 AM EDT Wed Jul 26 2017

.REST OF TODAY...West winds 10 to 20 knots. A slight chance of
showers and thunderstorms through midday. Waves calm to 2 feet.
.TONIGHT...West winds 10 to 20 knots veering northwest after
midnight, then becoming north 5 to 15 knots late. Waves calm to
2 feet.
.THURSDAY...North winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...North winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY...East winds 5 to 15 knots becoming south 10 to
20 knots. Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ266-262145-
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-
935 AM EDT Wed Jul 26 2017

.REST OF TODAY...Southwest winds 15 to 25 knots becoming west
10 to 20 knots in the afternoon. A chance of showers and
thunderstorms through mid afternoon. Waves 2 to 4 feet subsiding
to 1 to 3 feet.
.TONIGHT...West winds 5 to 15 knots veering north late. Waves
subsiding to calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then backing northwest late. Waves
calm to 2 feet.
.THURSDAY NIGHT...North winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight. 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. Waves calm to
2 feet.
.SATURDAY...Northwest winds 5 to 15 knots backing south. Waves
calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ267-262145-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
935 AM EDT Wed Jul 26 2017

.REST OF TODAY...Southwest winds 20 to 30 knots becoming west
15 to 25 knots in the afternoon, then diminishing to 10 to
20 knots late. A chance of showers and thunderstorms through late
afternoon. Waves 2 to 4 feet subsiding to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering north late. Waves
calm to 2 feet.
.THURSDAY...North 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 becoming northeast
5 to 15 knots after midnight. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots becoming northwest 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots backing southwest.
Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots. Waves calm to 2 feet.

$$
LSZ261-262145-
MAFOR 2615/
Superior West 14610 11700 12800 11100. Waves 2 feet or less.

Superior North Central 14620 12710 11800 11100. Waves 1 to 3
feet.

Superior South Central 14610 11610 11710 11800 11100. Waves 2
feet or less.

Superior East 11530 14610 11700 11800 11100. Chance of showers
through mid afternoon. Waves 1 to 4 feet.


$$

MZ

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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