938
FZUS63 KMQT 060144
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
944 PM EDT Fri Jul 5 2024

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 29.8 inch low pressure over Lower Michigan shifts
east atop the lower Great Lakes on Saturday. A weak high pressure
ridge of 29.9 inches follows in its wake, reaching the western
Great Lakes during Saturday. As the ridge builds to 30.1 inches
while shifting toward the Lower Great Lakes on Sunday, a 29.9 inch
low pressure trough will move east to Minnesota. This trough will
dissipate as it moves over Lake Superior on Monday. On Tuesday,
weak high pressure of 29.9 inches will set up over Lake Superior,
building to 30.1 inches on Wednesday.


LSZ162-060945-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
944 PM EDT Fri Jul 5 2024 /844 PM CDT Fri Jul 5 2024/

.REST OF TONIGHT...West winds 5 to 15 knots backing southwest
late. Waves calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots backing south late. A
slight chance of showers and thunderstorms by mid afternoon.
Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots. A slight chance of
showers and thunderstorms after midnight. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots. A chance of showers through
early afternoon. A chance of thunderstorms. Showers likely by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Northeast winds 5 to 15 knots backing west after
midnight. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots veering west. Waves calm to
2 feet.
.WEDNESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ263-060945-
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-
944 PM EDT Fri Jul 5 2024

.REST OF TONIGHT...West winds less than 10 knots increasing to
5 to 15 knots late. Waves calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots diminishing to less
than 10 knots late. A slight chance of showers and thunderstorms
after midnight. Waves calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots backing east by mid
afternoon. A chance of showers and a slight chance of
thunderstorms. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots becoming west less than
10 knots after midnight. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ264-060945-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
944 PM EDT Fri Jul 5 2024

.REST OF TONIGHT...West winds less than 10 knots increasing to
5 to 15 knots late. Waves calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots backing southwest late.
Patchy fog through early afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots backing south
after midnight, then diminishing to less than 10 knots late.
Waves calm to 2 feet.
.SUNDAY...Southeast winds 5 to 15 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots becoming southwest
less than 10 knots after midnight. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY NIGHT...South winds less than 10 knots. Waves calm to
2 feet.
.TUESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ265-060945-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
944 PM EDT Fri Jul 5 2024

.REST OF TONIGHT...Northwest winds 5 to 15 knots backing west
late. Waves calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots backing east in the
afternoon, then veering southeast late. Waves calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 15 knots veering south
late. Waves calm to 2 feet.
.SUNDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of showers and thunderstorms
by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots veering southwest after
midnight. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots becoming north less
than 10 knots after midnight. Waves calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots backing west. Waves calm to
2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots backing west. Waves
calm to 2 feet.

$$

LSZ266-060945-
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-
944 PM EDT Fri Jul 5 2024

.REST OF TONIGHT...North winds 5 to 15 knots backing northwest
late. Patchy fog. Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots. Patchy fog through
early afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots. Waves calm to
2 feet.
.SUNDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A slight chance of showers and
thunderstorms by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots. A chance of showers
and thunderstorms. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots backing east after
midnight. Waves calm to 2 feet.
.TUESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ267-060945-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
944 PM EDT Fri Jul 5 2024

.REST OF TONIGHT...North winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A slight chance of showers by late
evening. Patchy fog. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. Patchy fog through early afternoon. Waves calm to
2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots backing southeast
late. Waves calm to 2 feet.
.SUNDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...South winds 10 to 20 knots. A chance of showers
and thunderstorms. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots backing east after
midnight. Waves calm to 2 feet.
.TUESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.

$$
LSZ261-060945-
MAFOR 0603/
Superior West 12600 14500 12400. Waves 1 foot or less.

Superior North Central 13600 12610 12600 11500. Waves 1 foot or
less.

Superior South Central 14700 11700 11100 12300. Waves 1 foot or
less.

Superior East 14800 13700 11600. Waves 1 foot or less.

$$

BW

Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes