233
FZUS63 KMQT 100135
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
935 PM EDT Thu May 9 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 30.0 inch ridge will remain over Lake Superior
tonight, while a weak 29.7 inch clipper approaches from the
northwest on Friday. A 29.8 inch ridge will build in briefly on
Saturday, while another clipper at 29.6 inches approaches from the
northwest on Sunday. A high pressure ridge of 29.8 inches follows
for early next week.

LSZ162-100945-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
935 PM EDT Thu May 9 2024 /835 PM CDT Thu May 9 2024/

.REST OF TONIGHT...Northwest winds 5 to 15 knots backing
southwest late. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A chance of rain showers and a slight
chance of thunderstorms by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots veering northwest after
midnight. A chance of rain showers and a slight chance of
thunderstorms through midnight. Waves calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots backing south by mid
afternoon. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.SATURDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. A chance of rain showers. Waves calm to 2 feet.
.SUNDAY...Southwest winds 15 to 25 knots veering west by mid
afternoon. A chance of showers. Waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding
to calm to 2 feet.
.MONDAY...South winds 10 to 20 knots backing northeast. Waves
calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots backing northeast. A chance
of rain showers. Waves building to 1 to 3 feet.

$$

LSZ263-100945-
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 PM EDT Thu May 9 2024

.REST OF TONIGHT...Northwest winds 5 to 15 knots backing west
after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. A slight chance of rain showers by mid afternoon. Waves
calm to 2 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots veering northwest after
midnight. A slight chance of rain showers through midnight. Waves
calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots becoming southwest
10 to 20 knots by mid afternoon. Waves building to 1 to 3 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A chance of rain showers. Waves
subsiding to calm to 2 feet, then building to 1 to 3 feet.
.SUNDAY...Southwest winds 10 to 20 knots veering west by mid
afternoon. A chance of showers. Waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves subsiding to calm to 2 feet.
.MONDAY...North winds 5 to 15 knots veering northeast. Waves calm
to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots veering east. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.

$$

LSZ264-100945-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
935 PM EDT Thu May 9 2024

.REST OF TONIGHT...Northwest winds 5 to 15 knots backing west
late. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots. A slight chance of rain
showers by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...South winds 5 to 15 knots veering west after
midnight, then veering northwest late. A slight chance of rain
showers through midnight. Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots backing west by mid
afternoon. Waves building to 1 to 3 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots becoming south
10 to 20 knots after midnight. A chance of rain showers. Waves
1 to 3 feet.
.SUNDAY...Southwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. A chance of showers. Waves 1 to
3 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots veering north after
midnight. Waves 1 to 3 feet.
.MONDAY...Northwest winds 5 to 15 knots veering north. Waves
subsiding to calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots veering east. Waves calm to
2 feet.

$$

LSZ265-100945-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
935 PM EDT Thu May 9 2024

.REST OF TONIGHT...Northwest winds 5 to 15 knots backing west
after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots becoming south 5 to 15 knots
in the afternoon, then backing southeast late. Waves calm to
2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots veering northwest
after midnight. A slight chance of rain showers through midnight.
Waves calm to 2 feet.
.SATURDAY...Northwest 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 10 to 20 knots. A chance of showers. Waves
calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 10 to 20 knots veering northwest
after midnight. Waves calm to 2 feet.
.MONDAY...North winds 10 to 20 knots. Waves calm to 2 feet.
.TUESDAY...North winds 10 to 20 knots veering east. Waves calm to
2 feet.

$$

LSZ266-100945-
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 PM EDT Thu May 9 2024

.REST OF TONIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...Northwest winds 5 to 15 knots veering east late. Waves
calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots backing east after
midnight, then backing northwest late. A slight chance of rain
showers. Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots becoming south 10 to
20 knots after midnight. Waves calm to 2 feet.
.SUNDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. A chance of rain showers. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 10 to 20 knots veering northwest
after midnight. Waves building to 1 to 3 feet.
.MONDAY...Northwest winds 10 to 20 knots veering north. Waves
subsiding to calm to 2 feet.
.TUESDAY...North winds 10 to 20 knots. Waves calm to 2 feet.

$$

LSZ267-100945-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
935 PM EDT Thu May 9 2024

.REST OF TONIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots late. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then becoming northwest 5 to 15 knots late.
Waves calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots veering south after
midnight, then veering west late. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots backing west by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots backing south after
midnight. Waves calm to 2 feet.
.SUNDAY...South winds 15 to 25 knots. A chance of rain showers
through early afternoon, then rain showers likely by mid
afternoon. Waves building to 1 to 3 feet.
.SUNDAY NIGHT...South winds 10 to 20 knots veering west after
midnight. A chance of rain showers through midnight. Waves
subsiding to calm to 2 feet.
.MONDAY...Northwest winds 10 to 20 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.TUESDAY...Northwest winds 10 to 20 knots veering northeast.
Waves calm to 2 feet.

$$
LSZ261-100945-
MAFOR 1003/
Superior West 11700 11600 11500 14510 11610. A chance of showers
Friday evening. Waves 2 feet or less.

Superior North Central 12710 12610 12510 11410 11400. Waves 2
feet or less.

Superior South Central 12700 11600 11610 11700 11200 12300. Waves
1 foot or less.

Superior East 11810 12800 11700 11600 11700 11600 11300. Waves 1
to 2 feet.

$$

BW

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

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