Great Lakes Forecast
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FZUS63 KMQT 190753
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
353 AM EDT Thu Apr 19 2018

For waters beyond 5 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 ridge of 30.0 inches over Lake Superior will build
to 30.4 inches through Monday morning before shifting slowly into
the lower Great Lakes.

LSZ162-191600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
353 AM EDT Thu Apr 19 2018 /253 AM CDT Thu Apr 19 2018/

.EARLY THIS MORNING...North winds 5 to 15 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TODAY...Northwest winds less than 10 knots becoming southwest
5 to 15 knots in the afternoon. Waves calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots veering west late. Waves
calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots diminishing to less than
10 knots in the afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...South winds less than 10 knots veering southwest
after midnight. Waves calm to 2 feet.
.SATURDAY...Southwest winds less than 10 knots backing south by
mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southeast winds less than 10 knots veering
southwest after midnight. Waves calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots veering southwest. Waves
building to 1 to 3 feet.
.MONDAY...Southwest winds 5 to 15 knots. Waves subsiding to calm
to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-191600-
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-
353 AM EDT Thu Apr 19 2018

.EARLY THIS MORNING...North winds 5 to 15 knots. Waves 1 to
3 feet.
.TODAY...Northwest winds 5 to 15 knots backing southwest late.
Waves subsiding to calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots diminishing to less than
10 knots late. 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 backing south by
mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds less than 10 knots. Waves calm to
2 feet.
.SUNDAY...Southwest winds 5 to 15 knots becoming south 10 to
20 knots. Waves building to 2 to 4 feet.
.MONDAY...Southwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-191600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
353 AM EDT Thu Apr 19 2018

.EARLY THIS MORNING...North winds 10 to 20 knots. Waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet.
.TODAY...North winds 10 to 20 knots becoming northwest 5 to
15 knots in the afternoon, then becoming west 10 to 20 knots
late. Waves subsiding to 1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. Waves subsiding to calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots backing southwest in the
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Southwest winds 5 to 15 knots backing south 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. Waves calm to
2 feet.
.SUNDAY...South winds 5 to 15 knots becoming southwest 10 to
20 knots. Waves building to 2 to 4 feet.
.MONDAY...Southwest winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-191600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
353 AM EDT Thu Apr 19 2018

.EARLY THIS MORNING...North winds 10 to 20 knots. Waves 3 to
6 feet occasionally to 8 feet.
.TODAY...Northwest winds 10 to 20 knots backing west late. Waves
subsiding to 1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. Waves subsiding to calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots becoming east less than
10 knots late. 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 becoming east 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.SUNDAY...Southeast winds 5 to 15 knots becoming southwest 10 to
20 knots. Waves building to 1 to 3 feet.
.MONDAY...Southwest winds 10 to 20 knots. Waves subsiding to calm
to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-191600-
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-
353 AM EDT Thu Apr 19 2018

.EARLY THIS MORNING...North winds 15 to 25 knots. Waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet.
.TODAY...North winds 15 to 25 knots backing northwest in the
afternoon, then diminishing to 10 to 20 knots late. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then backing west late. Waves subsiding
to calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY NIGHT...Southwest winds less than 10 knots backing south
after midnight. Waves calm to 2 feet.
.SATURDAY...South winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots increasing to 10 to 20 knots.
Waves building to 2 to 4 feet.
.MONDAY...South winds 10 to 20 knots veering southwest. Waves
subsiding to 1 to 3 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-191600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
353 AM EDT Thu Apr 19 2018

.EARLY THIS MORNING...North winds 20 to 30 knots. Waves 3 to
6 feet occasionally to 8 feet.
.TODAY...North winds 20 to 30 knots backing northwest in the
afternoon. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...Northwest winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots veering west in the
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...West winds less than 10 knots backing south after
midnight. Waves calm to 2 feet.
.SATURDAY...Southeast winds less than 10 knots becoming northeast
5 to 15 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots increasing to 10 to 20 knots.
Waves building to 2 to 4 feet.
.MONDAY...South winds 10 to 20 knots. Waves subsiding to 1 to
3 feet, then building to 2 to 4 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ261-191600-
MAFOR 1909/
Superior West 11800 11700 11600 12510 12500 11600. Waves 2 feet
or less.

Superior North Central 12810 11710 14610 11610. Waves 2 to 4 feet
subsiding to 1 to 3 feet today. Waves 1 to 3 feet tonight.

Superior South Central 11820 14720 12610 11600. Waves 3 to 6 feet
subsiding to 2 to 4 feet today. Waves 1 to 3 feet tonight.

Superior East 12830 12720 11730 11720 11710 11700. Waves 3 to 6
feet today. Waves 3 to 5 feet subsiding to 2 to 3 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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