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FZUS63 KMQT 031945
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
345 PM EDT Wed Jul 3 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 29.3 inch low has made it to the Hudson Bay this
afternoon and drags a 29.7 inch trough across Lake Superior. In
its wake, a weak 29.9 inch high pressure ridge will shift east,
reaching the western Great Lakes on Thursday. A 29.7 inch low
pressure organizing over the Plains on Thursday will then track to
the Great Lakes region on Friday. The low continues northeast
over the Great Lakes, reaching Quebec by Saturday afternoon. Then
a 29.8 inch trough approaches the western Great Lakes on Sunday.

LSZ162-040345-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
345 PM EDT Wed Jul 3 2024 /245 PM CDT Wed Jul 3 2024/

.LATE THIS AFTERNOON...Southwest winds 15 to 25 knots. Waves 2 to
4 feet subsiding to 1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots backing south in the
afternoon, then becoming east 10 to 20 knots late. A slight
chance of showers by mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Northeast winds 10 to 20 knots. A chance of
showers. Waves building to 1 to 3 feet.
.FRIDAY...Northeast winds 10 to 20 knots. A chance of showers.
Waves 1 to 3 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to calm
to 2 feet.
.SATURDAY...West winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 10 to 20 knots. Waves calm to
2 feet.
.SUNDAY...South winds 10 to 20 knots backing north. A chance of
showers. Waves calm to 2 feet.
.MONDAY...Southwest winds 10 to 20 knots becoming west 5 to
15 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ263-040345-
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-
345 PM EDT Wed Jul 3 2024

.LATE THIS AFTERNOON...Southwest winds 10 to 20 knots. Waves 2 to
4 feet.
.TONIGHT...West winds 5 to 15 knots. Waves subsiding to calm to
2 feet.
.THURSDAY...West winds 5 to 15 knots backing south in the
afternoon, then backing east late. Waves calm to 2 feet.
.THURSDAY NIGHT...East winds 5 to 15 knots backing northeast
after midnight. A chance of showers. A slight chance of
thunderstorms after midnight. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots. A slight chance of
thunderstorms through early afternoon. A chance of showers. Waves
building to 1 to 3 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots backing west after
midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.SUNDAY...South winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.
.MONDAY...West winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ264-040345-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
345 PM EDT Wed Jul 3 2024

.LATE THIS AFTERNOON...Southwest winds 10 to 20 knots. Waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet.
.TONIGHT...West winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing southwest late.
Waves calm to 2 feet.
.THURSDAY NIGHT...East winds less than 10 knots increasing to
5 to 15 knots after midnight. A slight chance of showers after
midnight. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.SATURDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.SUNDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots veering west. Waves calm
to 2 feet.

$$

LSZ265-040345-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
345 PM EDT Wed Jul 3 2024

.LATE THIS AFTERNOON...West winds 10 to 20 knots. Isolated
showers. Waves calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY...Northwest winds 5 to 15 knots veering northeast in
the afternoon, then veering east late. Waves calm to 2 feet.
.THURSDAY NIGHT...East winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of showers through early
afternoon, then showers likely and a slight chance of
thunderstorms by mid afternoon. Waves building to 1 to 3 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots backing northwest
after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots backing west by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.SUNDAY...Southeast winds 5 to 15 knots veering south. Waves calm
to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots veering west. Waves calm
to 2 feet.

$$

LSZ266-040345-
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-
345 PM EDT Wed Jul 3 2024

.LATE THIS AFTERNOON...Southwest winds 10 to 20 knots. Isolated
showers. Waves 2 to 4 feet.
.TONIGHT...West winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...Northwest winds 5 to 15 knots veering north late.
Waves calm to 2 feet.
.THURSDAY NIGHT...Northeast winds 5 to 15 knots veering east
after midnight, then backing northeast late. A chance of showers.
Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of showers. A slight chance
of thunderstorms by mid afternoon. Waves building to 1 to 3 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots. A chance of showers.
Waves building to 2 to 4 feet.
.SATURDAY...Northwest winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots backing south after
midnight. Waves calm to 2 feet.
.SUNDAY...South winds 10 to 20 knots diminishing to 5 to
15 knots. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots veering west. Waves calm
to 2 feet.

$$

LSZ267-040345-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
345 PM EDT Wed Jul 3 2024

.LATE THIS AFTERNOON...Southwest winds 10 to 20 knots. Isolated
showers. Waves calm to 2 feet.
.TONIGHT...Southwest winds 10 to 20 knots veering west after
midnight, then diminishing to 5 to 15 knots late. Waves calm to
2 feet.
.THURSDAY...Northwest winds 5 to 15 knots backing west in the
afternoon, then veering northwest late. Waves calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots veering northeast
late. A chance of showers after midnight. Waves calm to 2 feet.
.FRIDAY...East winds 10 to 20 knots backing northeast by mid
afternoon. Showers likely. A slight chance of thunderstorms by
mid afternoon. Waves building to 1 to 3 feet.
.FRIDAY NIGHT...North winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers. Waves building to
2 to 4 feet.
.SATURDAY...Northwest winds 10 to 20 knots. Waves subsiding to
1 to 3 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots backing south after
midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Southeast winds 10 to 20 knots veering south. A chance
of showers. Waves calm to 2 feet.
.MONDAY...Southwest winds 10 to 20 knots becoming west 5 to
15 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ261-040345-
MAFOR 0321/
Superior West 11520 12610 14600 11200. Waves 2 to 4 feet
subsiding to 1 to 2 feet tonight and Thursday.

Superior North Central 11530 11620 11610 12600 11700 12600. Waves
3 to 5 feet subsiding to 1 to 4 feet tonight and Thursday.

Superior South Central 12610 11600 11610 11600 11700 11800 11100.
Waves 2 feet or less.

Superior East 12510 12610 14700. 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