955
FZUS63 KMQT 221348
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
948 AM EDT Sat Jun 22 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 29.8 low pressure will track northeast from
southwest Minnesota to near the Straits by Sunday morning as it
deepens to near 29.5 inches. Through the day Sunday, the low will
continue eastward into Quebec while deepening further to 29.3
inches while 29.8 inch ridging builds into the Upper Great Lakes
from the west. The high shifts southeast into the Appalachians on
Tuesday while building to 30.0 inches. Monday night, a 29.2 inch
low will track east through Manitoba, moving through Ontario into
James Bay Tuesday. This will pull a 29.5 inch trough through Lake
Superior on Tuesday. 29.9 inch high pressure from the High Plains extends
into the Upper Great Lakes on Wednesday.

LSZ162-222200-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
948 AM EDT Sat Jun 22 2024 /848 AM CDT Sat Jun 22 2024/

.REST OF TODAY...Northeast winds 15 to 25 knots diminishing to
10 to 20 knots late. A chance of showers. A slight chance of
thunderstorms by mid afternoon. Waves 1 to 3 feet building to
2 to 4 feet.
.TONIGHT...Northeast winds 5 to 15 knots backing northwest after
midnight, then backing west late. A slight chance of
thunderstorms through midnight. A slight chance of showers. Waves
subsiding to calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots. A slight chance of showers
and thunderstorms. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots backing southwest after
midnight. Patchy fog after midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 10 to 20 knots veering southwest after
midnight. Showers likely and a chance of thunderstorms. Waves
calm to 2 feet.
.TUESDAY...Southwest winds 10 to 20 knots veering west. Waves
building to 2 to 4 feet, then subsiding to calm to 2 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ263-222200-
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-
948 AM EDT Sat Jun 22 2024

.REST OF TODAY...Northeast winds 5 to 15 knots increasing to
10 to 20 knots in the afternoon. A chance of showers. A slight
chance of thunderstorms by mid afternoon. Waves calm to 2 feet
building to 2 to 4 feet.
.TONIGHT...Northeast winds 5 to 15 knots backing north after
midnight, then backing west late. A slight chance of showers.
Waves subsiding to calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots. A slight chance of showers
and thunderstorms. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots becoming southwest less
than 10 knots after midnight. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. A chance of showers through
midnight. A chance of thunderstorms. Showers likely after
midnight. Waves building to 1 to 3 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west 10 to
20 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet.
.WEDNESDAY...North winds 5 to 15 knots backing west. Waves
subsiding to calm to 2 feet.

$$

LSZ264-222200-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
948 AM EDT Sat Jun 22 2024

.REST OF TODAY...East winds 5 to 15 knots backing northeast late.
A slight chance of showers. Waves calm to 2 feet.
.TONIGHT...Northeast winds 5 to 15 knots backing northwest after
midnight. A slight chance of showers. Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 10 to 20 knots. A chance of
thunderstorms. Showers likely after midnight. Waves building to
1 to 3 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west 10 to
20 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots backing west. Waves
subsiding to calm to 2 feet.

$$

LSZ265-222200-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
948 AM EDT Sat Jun 22 2024

.REST OF TODAY...East winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then backing northeast late. A chance
of showers. Waves calm to 2 feet.
.TONIGHT...Northeast winds 10 to 20 knots backing northwest late.
Patchy fog through midnight. A chance of showers. Waves building
to 1 to 3 feet, then subsiding to calm to 2 feet.
.SUNDAY...West winds 10 to 20 knots veering northwest in the
afternoon. A slight chance of showers. A slight chance of
thunderstorms by mid afternoon. Waves building to 1 to 3 feet,
then subsiding to calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 10 to 20 knots. Showers likely and a
chance of thunderstorms after midnight. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.TUESDAY...West winds 15 to 25 knots. A chance of showers and
thunderstorms. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ266-222200-
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-
948 AM EDT Sat Jun 22 2024

.REST OF TODAY...East winds 5 to 15 knots backing northeast late.
A chance of showers. Waves calm to 2 feet.
.TONIGHT...Northeast winds 10 to 20 knots backing northwest late.
Patchy fog. A slight chance of thunderstorms through midnight. A
chance of showers. Waves building to 1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots. A slight chance of
showers through early afternoon. Waves 1 to 3 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots backing west after
midnight. Waves subsiding to calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Showers likely and a chance of
thunderstorms after midnight. Waves building to 2 to 4 feet.
.TUESDAY...Southwest winds 10 to 20 knots veering west. A chance
of showers and thunderstorms. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ267-222200-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
948 AM EDT Sat Jun 22 2024

.REST OF TODAY...East winds 5 to 15 knots backing northeast in
the afternoon, then increasing to 10 to 20 knots late. A chance
of showers by late morning, then showers likely by mid afternoon.
Patchy fog by mid afternoon. Waves calm to 2 feet.
.TONIGHT...Northeast winds 10 to 20 knots backing north after
midnight, then increasing to 15 to 25 knots late. Patchy fog. A
chance of showers. Waves building to 1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots. A slight chance of
showers by mid afternoon. Waves 1 to 3 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. A slight chance of showers through
midnight. Waves subsiding to calm to 2 feet.
.MONDAY...West winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 10 to 20 knots. A chance of showers
after midnight. Waves building to 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots becoming west 10 to
20 knots. Showers likely. A chance of thunderstorms. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.

$$
LSZ261-222200-
MAFOR 2215/
Superior West 13120 11110 11810 11700 11600 11610. A chance of
showers this afternoon and evening. Waves 1 to 3 feet.

Superior North Central 11210 11110 12100 11800 11700 12710. Waves
2 feet or less.

Superior South Central 11216 11116 11110 11120 11810 11720 11710
11720. Waves 1 to 3 feet.

Superior East 11200 11100 11116 11110 11810 12820 11710. Waves 1
foot or less this afternoon. Waves 2 feet or less building to 2
to 3 feet tonight and Sunday morning.

$$

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