815
FZUS63 KMQT 070755
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
355 AM EDT Sun Jul 7 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...As a 30.0 inch high pressure ridge over the Great Lakes
drifts east today, a 29.9 inch low pressure trough will slowly move
east across Minnesota. This trough will dissipate as it moves over
Lake Superior on Monday. Then a weak high pressure of 29.9 inches
setting up over Lake Superior on Tuesday will build to 30.1 inches
on Wednesday. On Thursday, 30.1 inch ridging will extend from
central Quebec across Lake Superior into the Upper Mississippi
Valley.

LSZ162-071600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
355 AM EDT Sun Jul 7 2024 /255 AM CDT Sun Jul 7 2024/

.EARLY THIS MORNING...East winds 5 to 15 knots. Isolated showers
and thunderstorms. Waves calm to 2 feet.
.TODAY...East winds 5 to 15 knots backing northeast in the
afternoon, then becoming east 10 to 20 knots late. Scattered
showers and thunderstorms. Waves calm to 2 feet.
.TONIGHT...Northeast winds 5 to 15 knots veering east late. A
slight chance of showers and thunderstorms through midnight.
Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots. A slight chance of
showers and thunderstorms through midnight. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY...East winds 5 to 15 knots veering southwest. Waves
calm to 2 feet.

$$

LSZ263-071600-
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-
355 AM EDT Sun Jul 7 2024

.EARLY THIS MORNING...South winds less than 10 knots. Waves calm
to 2 feet.
.TODAY...South winds less than 10 knots becoming east 5 to
15 knots in the afternoon. Scattered showers and thunderstorms.
Waves calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south after
midnight, then becoming southwest less than 10 knots late. A
slight chance of showers and thunderstorms through midnight.
Waves calm to 2 feet.
.MONDAY...Southwest winds less than 10 knots becoming west 5 to
15 knots in the afternoon, then backing southwest late. A slight
chance of showers and thunderstorms by mid afternoon. Waves calm
to 2 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. A slight chance of showers and
thunderstorms through midnight. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds less than 10 knots veering north
after midnight. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots diminishing to less
than 10 knots. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ264-071600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
355 AM EDT Sun Jul 7 2024

.EARLY THIS MORNING...South winds less than 10 knots. Waves calm
to 2 feet.
.TODAY...Southeast winds less than 10 knots increasing to 5 to
15 knots in the afternoon. Isolated showers and thunderstorms by
mid afternoon. Waves calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south after
midnight. A slight chance of showers and thunderstorms. Waves
calm to 2 feet.
.MONDAY...Southwest winds less than 10 knots increasing to 5 to
15 knots in the afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. A slight chance of showers. Waves
calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds less than 10 knots veering west
after midnight. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots becoming north less
than 10 knots. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ265-071600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
355 AM EDT Sun Jul 7 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then backing east late. Isolated
showers and thunderstorms by mid afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots. A chance of showers and
thunderstorms. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing east in the
afternoon. A slight chance of showers and thunderstorms. Waves
calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots veering west after
midnight. A slight chance of thunderstorms through midnight. A
slight chance of showers. Waves calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots veering northeast by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots backing north after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots backing northwest.
Waves calm to 2 feet.
.THURSDAY...East winds 5 to 15 knots veering south. Waves calm to
2 feet.

$$

LSZ266-071600-
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-
355 AM EDT Sun Jul 7 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots late. Patchy fog through early afternoon. Isolated
showers and thunderstorms by mid afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots late. A chance of showers and a slight chance of
thunderstorms. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots veering southwest in the
afternoon, then backing east late. A slight chance of showers and
thunderstorms. Waves calm to 2 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots. A chance of
showers and a slight chance of thunderstorms. Waves calm to
2 feet.
.TUESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots veering south. Waves calm
to 2 feet.

$$

LSZ267-071600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
355 AM EDT Sun Jul 7 2024

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...Southeast winds 5 to 15 knots backing east in the
afternoon, then becoming southeast 10 to 20 knots late. Isolated
showers by mid afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots. A chance of showers. A
slight chance of thunderstorms after midnight. Waves calm to
2 feet.
.MONDAY...South winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon, then backing east late. A chance of showers and
a slight chance of thunderstorms. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 5 to 15 knots veering northwest after
midnight. A chance of showers and a slight chance of
thunderstorms. Waves calm to 2 feet.
.TUESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.
.WEDNESDAY...North winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots backing southwest. Waves
calm to 2 feet.

$$

LSZ261-071600-
MAFOR 0709/
Superior West 12300 11200 11100 19109 11200 19209 11210 11200
11300. Waves 1 foot or less.

Superior North Central 11400 13300 12310 11410 11400. Waves 2
feet or less.

Superior South Central 12410 11300 13310 12410. A chance of
showers and thunderstorms tonight. Waves 2 feet or less.

Superior East 14300 11310 13410. Waves 2 feet or less.

$$

Rolfson

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

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