394
FZUS63 KMQT 170150
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
950 PM EDT Sun Jun 16 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...Tonight, a 29.0 inch low over northern Manitoba will
pass a 29.7 inch trough over the lake. Following the trough, weak
ridging of 29.9 inches will be over the lake Monday while a 29.3
inch low pressure moves off the Colorado Rockies into the Northern
Plains. The low will track across northern Minnesota at 29.5
inches Tuesday, reaching James Bay Wednesday morning as it pulls a
29.8 inch trough through Lake Superior. As the low lifts
northeast, high pressure to 30.3 inches builds over Lake Superior
for Thursday and Friday.

LSZ162-171000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
950 PM EDT Sun Jun 16 2024 /850 PM CDT Sun Jun 16 2024/

.REST OF TONIGHT...Southwest winds 5 to 15 knots becoming west
10 to 20 knots after midnight, then diminishing to 5 to 15 knots
late. A slight chance of showers and thunderstorms by late
evening. Patchy fog. Some thunderstorms may be severe. Waves calm
to 2 feet.
.MONDAY...West winds 5 to 15 knots backing south in the
afternoon, then backing northeast late. A chance of showers
through early afternoon, then showers likely and a slight chance
of thunderstorms by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 10 to 20 knots backing northeast after
midnight, then veering east late. Showers likely through
midnight. A chance of thunderstorms. A chance of showers after
midnight. Waves building to 1 to 3 feet.
.TUESDAY...East winds 10 to 20 knots becoming south 15 to
25 knots by mid afternoon. A chance of showers and thunderstorms.
Waves building to 2 to 4 feet.
.TUESDAY NIGHT...South winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. Showers likely through midnight. A
chance of thunderstorms. A chance of showers after midnight.
Waves subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 10 to 20 knots backing southwest by mid
afternoon. Waves subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.THURSDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots increasing to 10 to
20 knots. A chance of showers. A chance of thunderstorms. Showers
likely. Waves calm to 2 feet.

$$

LSZ263-171000-
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-
950 PM EDT Sun Jun 16 2024

.REST OF TONIGHT...Southwest winds 5 to 15 knots veering west
after midnight. Patchy fog. A slight chance of showers and
thunderstorms. Some thunderstorms may be severe by late evening.
Waves 1 to 3 feet subsiding to calm to 2 feet.
.MONDAY...West winds 5 to 15 knots backing southwest in the
afternoon, then backing northeast late. Patchy fog through early
afternoon. A chance of showers through early afternoon. A slight
chance of thunderstorms. Showers likely by mid afternoon. Waves
calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots. Showers likely through
midnight. A chance of thunderstorms. A chance of showers after
midnight. Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. A chance of showers and a slight
chance of thunderstorms. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. Showers likely through midnight. A chance of
thunderstorms. A chance of showers after midnight. Waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet.
.WEDNESDAY...West winds 5 to 15 knots. A chance of showers. Waves
subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. A chance of showers. Waves subsiding to calm to 2 feet.
.THURSDAY...Northeast winds 5 to 15 knots veering east. Waves
calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots. A chance of showers. Showers
likely. Waves calm to 2 feet.

$$

LSZ264-171000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
950 PM EDT Sun Jun 16 2024

.REST OF TONIGHT...South winds 5 to 15 knots veering west late.
Patchy fog. A slight chance of showers and thunderstorms. Waves 2
to 4 feet subsiding to 1 to 3 feet.
.MONDAY...West winds 5 to 15 knots backing southwest in the
afternoon. Patchy fog through early afternoon. A chance of
showers. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight. Showers likely through midnight. A chance of
thunderstorms. A chance of showers after midnight. Waves calm to
2 feet.
.TUESDAY...South winds 10 to 20 knots. A slight chance of showers
and thunderstorms. Waves building to 3 to 5 feet occasionally to
7 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. A chance of showers and thunderstorms. Waves
subsiding to 2 to 4 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots veering west by mid
afternoon. A chance of showers. Waves subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots becoming west less than
10 knots. Waves calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.

$$

LSZ265-171000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
950 PM EDT Sun Jun 16 2024

.REST OF TONIGHT...South winds 10 to 20 knots veering southwest
after midnight, then becoming west 5 to 15 knots late. Patchy
fog. A slight chance of showers and thunderstorms. Waves 2 to
4 feet subsiding to calm to 2 feet.
.MONDAY...West winds 5 to 15 knots backing south in the
afternoon, then backing east late. Patchy fog through early
afternoon. A chance of showers and a slight chance of
thunderstorms. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 10 to 20 knots veering southeast late.
Showers likely through midnight. A chance of thunderstorms. A
chance of showers after midnight. Waves calm to 2 feet.
.TUESDAY...South winds 15 to 25 knots. Waves building to 1 to
3 feet.
.TUESDAY NIGHT...South winds 15 to 25 knots. A chance of showers
and thunderstorms. Waves subsiding to calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots. A chance of showers and
thunderstorms. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. A chance of showers. Waves calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots backing northwest. A chance
of showers. Waves calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots veering southeast. A chance of
showers, then showers likely. Waves calm to 2 feet.

$$

LSZ266-171000-
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-
950 PM EDT Sun Jun 16 2024

.REST OF TONIGHT...South winds 10 to 20 knots becoming southwest
5 to 15 knots late. A slight chance of showers and thunderstorms.
Patchy fog after midnight. Waves 3 to 5 feet occasionally to
7 feet subsiding to 1 to 3 feet.
.MONDAY...West winds 5 to 15 knots veering northwest in the
afternoon, then veering east late. Patchy fog through early
afternoon. A chance of showers. A chance of thunderstorms by mid
afternoon. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots becoming southeast 10 to
20 knots after midnight. Showers likely through midnight. A
chance of thunderstorms. A chance of showers after midnight.
Waves building to 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. A slight chance of showers and
thunderstorms through early afternoon. Waves building to 3 to
5 feet occasionally to 7 feet.
.TUESDAY NIGHT...South winds 15 to 25 knots. A chance of showers
and thunderstorms. Waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots veering west by mid
afternoon. A chance of showers through early afternoon. A chance
of thunderstorms. Showers likely by mid afternoon. Waves
subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. A chance of showers. Waves subsiding to calm to
2 feet.
.THURSDAY...North winds 5 to 15 knots backing northwest. A chance
of showers. Waves calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.

$$

LSZ267-171000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
950 PM EDT Sun Jun 16 2024

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

$$
LSZ261-171000-
MAFOR 1703/
Superior West 11510 11610 11600 11610 11500 11406 11106 11116. A
chance of thunderstorms Monday evening. Waves 1 foot or less.

Superior North Central 11410 11510 19514 11610 19614 12610 11500
11300 11216. Waves 1 to 4 feet.

Superior South Central 11420 11510 11610 11600 11710 11310 12216.
A chance of thunderstorms Monday evening. Waves 1 to 4 feet
overnight. Waves 2 feet or less Monday and Monday evening.

Superior East 12420 11510 11610 11700 11300 11100 11206. A chance
of thunderstorms overnight and Monday evening. Waves 1 to 4 feet.

$$

GS

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

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