956
FZUS63 KMQT 231947
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
347 PM EDT Mon Sep 23 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... 30.0 inch high pressure centered over Ontario is
extending into the Great Lakes this afternoon. On Tuesday, a 29.8
inch low pressure will track northeast to lower Michigan while a
weakening 29.8 inch trough lifts from northern Minnesota into
Ontario. 30.0 inch high pressure builds over the Lower MS Valley
Wednesday, building to 30.1 inches Thursday. High pressure
continues over the Great Lakes Friday into Saturday.

LSZ162-240400-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
347 PM EDT Mon Sep 23 2024 /247 PM CDT Mon Sep 23 2024/

.LATE THIS AFTERNOON...East winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...East winds 10 to 20 knots becoming south 5 to 15 knots
after midnight. Waves building to 2 to 4 feet, then subsiding to
1 to 3 feet.
.TUESDAY...South winds 5 to 15 knots backing east late. Waves
subsiding to calm to 2 feet.
.TUESDAY NIGHT...East winds 5 to 15 knots backing northwest after
midnight, then backing west late. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Southwest winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...East winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing northeast. Waves
calm to 2 feet.
.SATURDAY...East winds 5 to 15 knots becoming northeast 10 to
20 knots. Waves calm to 2 feet.

$$

LSZ263-240400-
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-
347 PM EDT Mon Sep 23 2024

.LATE THIS AFTERNOON...East winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...Southeast winds 10 to 20 knots veering south late.
Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.TUESDAY...South winds 5 to 15 knots backing northeast late.
Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 5 to 15 knots veering southwest
after midnight, then veering west late. Waves calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Southwest winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing southeast. Waves
calm to 2 feet.
.SATURDAY...East winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ264-240400-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
347 PM EDT Mon Sep 23 2024

.LATE THIS AFTERNOON...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south late.
Waves building to 1 to 3 feet.
.TUESDAY...South winds 5 to 15 knots backing southeast in the
afternoon. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight, then veering west late. Waves calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. Waves calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots backing southeast. Waves calm
to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ265-240400-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
347 PM EDT Mon Sep 23 2024

.LATE THIS AFTERNOON...East winds 10 to 20 knots. Waves calm to
2 feet.
.TONIGHT...Southeast winds 10 to 20 knots becoming south 5 to
15 knots late. Waves calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then backing east late. Waves calm to
2 feet.
.TUESDAY NIGHT...Southeast winds 5 to 15 knots veering southwest
after midnight, then veering west late. Waves calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...West winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots veering southeast. Waves calm
to 2 feet.
.SATURDAY...East winds 5 to 15 knots veering southeast. Waves
calm to 2 feet.

$$

LSZ266-240400-
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-
347 PM EDT Mon Sep 23 2024

.LATE THIS AFTERNOON...East winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...East winds 5 to 15 knots veering southeast after
midnight. Waves calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots becoming east 10 to
20 knots late. Waves calm to 2 feet.
.TUESDAY NIGHT...East winds 5 to 15 knots backing north after
midnight, then backing northwest late. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots backing southeast. Waves calm
to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ267-240400-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
347 PM EDT Mon Sep 23 2024

.LATE THIS AFTERNOON...Northeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Northeast winds 5 to 15 knots becoming east 10 to
20 knots after midnight, then veering southeast late. Waves calm
to 2 feet.
.TUESDAY...Southeast winds 10 to 20 knots becoming east 5 to
15 knots in the afternoon. A slight chance of showers by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...East winds 10 to 20 knots becoming north 5 to
15 knots after midnight, then becoming northwest 10 to 20 knots
late. A slight chance of showers. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots backing west by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Northwest winds 5 to 15 knots veering north by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. Waves calm to 2 feet.
.SATURDAY...Southeast winds 10 to 20 knots. Waves calm to 2 feet.

$$

LSZ261-240400-
MAFOR 2321/
Superior West 11210 11220 11320 11420 12410 11400 11300. Waves 1
to 3 feet.

Superior North Central 11310 12320 11420 12410 12310. Waves 1 to
3 feet.

Superior South Central 11210 13310 11400 11300 12310. Waves 1 to
2 feet.

Superior East 12100 11200 14310 11200. Waves 2 feet 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