353
FZUS63 KMQT 080808
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
408 AM EDT Wed May 8 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 29.5 inch low over eastern Upper Michigan moves east
toward New England today. Meanwhile, a 29.4 inch low over the
Northern Plains weakens as it settles southeast and phases with
another low pressure system moving northeast out of the Southern
Plains. The new low at 29.6 inches over the Mid Mississippi
Valley this evening moves east tonight over the Ohio River Valley
while weak ridging builds in over Lake Superior from the
northeast. Weak 30.0 inch ridging holds over Lake Superior through
Friday morning, then a 29.7 inch low pressure trough drops
southeast across the Upper Great Lakes Friday and Friday night.
This will be followed by weak ridging at 29.8 inches Saturday and
Saturday night before an additional trough at 29.7 inches swings
southeast over the Upper Great Lakes Sunday into Monday.

LSZ162-081615-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
408 AM EDT Wed May 8 2024 /308 AM CDT Wed May 8 2024/

.EARLY THIS MORNING...Northeast winds 5 to 15 knots. Isolated
rain showers. Waves 1 to 3 feet.
.TODAY...Northeast winds 10 to 20 knots becoming east 15 to
25 knots in the afternoon. A slight chance of rain showers
through early afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.TONIGHT...Northeast winds 10 to 20 knots increasing to 15 to
25 knots late. Waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet.
.THURSDAY...Northeast winds 15 to 25 knots diminishing to 10 to
20 knots late. Waves subsiding to 1 to 3 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.FRIDAY...Southwest winds 10 to 20 knots. Rain showers likely by
mid afternoon. Waves building to 2 to 4 feet, then subsiding to
1 to 3 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding
to calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots backing southwest.
Waves calm to 2 feet.
.SUNDAY...Southwest winds 10 to 20 knots veering northwest. A
chance of rain showers. Waves calm to 2 feet.

$$

LSZ263-081615-
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-
408 AM EDT Wed May 8 2024

.EARLY THIS MORNING...Northeast winds 10 to 20 knots. Isolated
rain showers. Waves 1 to 3 feet building to 2 to 4 feet.
.TODAY...Northeast winds 15 to 25 knots diminishing to 10 to
20 knots late. A slight chance of rain showers. Waves building to
3 to 6 feet occasionally to 8 feet.
.TONIGHT...Northeast winds 15 to 25 knots. Waves subsiding to
2 to 4 feet, then building to 3 to 6 feet occasionally to 8 feet.
.THURSDAY...Northeast winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then backing north late. Waves
subsiding to 1 to 3 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.FRIDAY...Southwest winds 10 to 20 knots. A chance of rain
showers. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots veering northwest after
midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots backing southwest. Waves
calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots veering west. Waves calm
to 2 feet.

$$

LSZ264-081615-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
408 AM EDT Wed May 8 2024

.EARLY THIS MORNING...Northeast winds 15 to 25 knots. Isolated
rain showers. Waves 2 to 4 feet building to 3 to 5 feet
occasionally to 7 feet.
.TODAY...Northeast winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. A slight chance of rain showers
through early afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 1 to 3 feet.
.TONIGHT...Northeast winds 20 to 30 knots diminishing to 15 to
25 knots late. Waves building to 3 to 6 feet occasionally to
8 feet.
.THURSDAY...Northeast winds 10 to 20 knots backing northwest
late. Waves subsiding to calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots backing west
after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots. Waves building to 1 to
3 feet.
.FRIDAY NIGHT...Southwest winds 5 to 15 knots veering north after
midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots backing southwest. Waves
calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots. Waves building to 1 to
3 feet.

$$

LSZ265-081615-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
408 AM EDT Wed May 8 2024

.EARLY THIS MORNING...North winds 5 to 15 knots. Scattered rain
showers. Waves calm to 2 feet.
.TODAY...North winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. A slight chance of rain showers through early
afternoon. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet.
.TONIGHT...North winds 5 to 15 knots veering northeast after
midnight, then increasing to 10 to 20 knots late. Waves subsiding
to 1 to 3 feet, then building to 3 to 5 feet occasionally to
7 feet.
.THURSDAY...Northeast winds 10 to 20 knots backing north in the
afternoon. Waves subsiding to calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots backing west
after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots veering northwest
after midnight. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots backing west. Waves
calm to 2 feet.
.SUNDAY...Southwest winds 10 to 20 knots. A chance of rain
showers. Waves calm to 2 feet.

$$

LSZ266-081615-
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-
408 AM EDT Wed May 8 2024

.EARLY THIS MORNING...Northeast winds 10 to 20 knots. Scattered
rain showers. Waves 1 to 3 feet building to 3 to 5 feet
occasionally to 7 feet.
.TODAY...Northeast winds 15 to 25 knots becoming north 10 to
20 knots in the afternoon. A slight chance of rain showers
through early afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet.
.TONIGHT...North winds 15 to 25 knots veering northeast after
midnight, then diminishing to 10 to 20 knots late. Waves building
to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...Northeast winds 10 to 20 knots backing north in the
afternoon. Waves subsiding to 1 to 3 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots. Waves subsiding
to calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots becoming north
10 to 20 knots after midnight. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots backing west. Waves
calm to 2 feet.
.SUNDAY...Southwest winds 10 to 20 knots. Waves building to 1 to
3 feet.

$$

LSZ267-081615-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
408 AM EDT Wed May 8 2024

.EARLY THIS MORNING...Northeast winds 10 to 20 knots. Numerous
rain showers. Waves calm to 2 feet building to 1 to 3 feet.
.TODAY...North winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. A chance of rain showers through early
afternoon. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet.
.TONIGHT...North winds 10 to 20 knots veering northeast after
midnight. Waves building to 2 to 4 feet.
.THURSDAY...Northeast winds 10 to 20 knots backing north in the
afternoon. Waves subsiding to 1 to 3 feet.
.THURSDAY NIGHT...North winds 10 to 20 knots. Waves building to
2 to 4 feet, then subsiding to calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet.
.SUNDAY...Southwest winds 10 to 20 knots. A chance of rain
showers. Waves calm to 2 feet.

$$

LSZ261-081615-
MAFOR 0809/
Superior West 11110 11120 11130 12230 12120 11130. Waves 2 to 4
feet building to 3 to 6 feet today and tonight.

Superior North Central 11130 11140 11130 11120 11110 11130 11140
11130. Waves 2 to 4 feet building to 3 to 6 feet.

Superior South Central 11810 19816 14810 11800 11110 11120. Waves
2 to 5 feet today and tonight.

Superior East 11126 11130 11120 11820 12810 12120. Waves 1 to 2
feet building to 2 to 5 feet today and tonight.

$$

Jablonski

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

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