743
FZUS63 KMQT 160147
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
947 PM EDT Mon Jul 15 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 29.6 inch trough will continue through the lake
tonight, then move into Quebec on Tuesday. This will be followed
by a high averaging 30.1 inches that expands from the Canadian
Prairies to the upper Great Lakes Tuesday through the end of the
week.

LSZ162-161000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
947 PM EDT Mon Jul 15 2024 /847 PM CDT Mon Jul 15 2024/

.REST OF TONIGHT...West winds 10 to 20 knots veering northwest
after midnight. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots veering northwest late. A
slight chance of showers by mid afternoon. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 10 to 20 knots veering north
late. Waves calm to 2 feet.
.WEDNESDAY...North winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. Waves building to 1 to 3 feet, then
subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. Waves calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots becoming west
10 to 20 knots after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 10 to 20 knots becoming west 5 to
15 knots. Waves calm to 2 feet.
.SATURDAY...East winds 5 to 15 knots backing northeast. Waves
calm to 2 feet.

$$

LSZ263-161000-
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-
947 PM EDT Mon Jul 15 2024

.REST OF TONIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.TUESDAY...West winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. A slight chance of showers and thunderstorms by
mid afternoon. Waves building to 1 to 3 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots becoming north
10 to 20 knots after midnight. A slight chance of showers after
midnight. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.WEDNESDAY...North winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. Waves subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...West winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves building to 1 to 3 feet, then
subsiding to calm to 2 feet.
.FRIDAY...Southwest winds 10 to 20 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ264-161000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
947 PM EDT Mon Jul 15 2024

.REST OF TONIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.TUESDAY...West winds 5 to 15 knots increasing to 10 to 20 knots
late. Waves building to 1 to 3 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight, then veering north late. Waves
subsiding to calm to 2 feet, then building to 2 to 4 feet.
.WEDNESDAY...North winds 10 to 20 knots becoming northwest 5 to
15 knots by mid afternoon. Waves subsiding to 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 southwest by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...Southwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.SATURDAY...North winds 5 to 15 knots veering northeast. Waves
calm to 2 feet.

$$

LSZ265-161000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
947 PM EDT Mon Jul 15 2024

.REST OF TONIGHT...Northwest winds 10 to 20 knots backing west
late. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots veering northwest in the
afternoon, then backing west late. Waves calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. A slight chance of
showers through early afternoon. Waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots backing west
after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...West winds 5 to 15 knots backing southwest. Waves calm
to 2 feet.
.SATURDAY...North winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ266-161000-
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-
947 PM EDT Mon Jul 15 2024

.REST OF TONIGHT...Northwest winds 10 to 20 knots. A slight
chance of showers and thunderstorms by late evening. Waves calm
to 2 feet.
.TUESDAY...Northwest winds 10 to 20 knots. Waves building to 1 to
3 feet.
.TUESDAY NIGHT...Northwest winds 10 to 20 knots. Waves building
to 2 to 4 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. Waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots. Waves
subsiding to calm to 2 feet.
.THURSDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...West winds 5 to 15 knots backing southwest. Waves calm
to 2 feet.
.SATURDAY...North winds 5 to 15 knots veering northeast. Waves
calm to 2 feet.

$$

LSZ267-161000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
947 PM EDT Mon Jul 15 2024

.REST OF TONIGHT...East winds 10 to 20 knots backing northwest
after midnight. A chance of showers and thunderstorms by late
evening. Waves calm to 2 feet.
.TUESDAY...Northwest winds 10 to 20 knots backing west in the
afternoon. Waves building to 1 to 3 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. Waves 1 to 3 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. A slight chance of showers. Waves
building to 2 to 4 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots. Waves
subsiding to calm to 2 feet.
.THURSDAY...Northwest winds 10 to 20 knots backing west by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots backing southwest
after midnight. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots backing southwest. Waves calm
to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots becoming northeast
10 to 20 knots. Waves calm to 2 feet.

$$
LSZ261-161000-
MAFOR 1603/
Superior West 13710 12610 11620 11610 11710. Waves 1 to 3 feet.

Superior North Central 12610 11710 13610 11620 11710. Waves 1 to
3 feet.

Superior South Central 16710. Waves 2 feet or less.

Superior East 15710 11720 11710. A chance of showers late this
evening. Waves 1 to 3 feet.

$$

WFO MQT

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

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