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000
FZUS63 KMQT 160200
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 PM EDT Mon Apr 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... 30.1 inch ridging across Lake Superior this evening
builds to 30.3 inches over the eastern lake by Tuesday morning. A
29.2 inch low pressure over Nebraska Tuesday morning tracks
northeast to Wisconsin on Wednesday while weakening to 29.5
inches. The low weakens further to 29.7 inches as it tracks east
across Lower Michigan Wednesday night before merging with another
29.7 inch low pressure over northern Ontario. This low moves into
the eastern James Bay Friday night into Saturday, deepening to
29.3 inches. Meanwhile, a 30.4 inch high pressure ridge builds
southeast into the Northern Plains extending weak 30.0 inch
ridging across the western lake. High pressure continues to build
to 30.2 inches Saturday.

LSZ162-161000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EDT Mon Apr 15 2024 /900 PM CDT Mon Apr 15 2024/

...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON...

.REST OF TONIGHT...East winds 5 to 15 knots increasing to 10 to
20 knots late. Waves calm to 2 feet building to 2 to 4 feet.
.TUESDAY...East winds 15 to 25 knots increasing to gales to
40 knots in the afternoon. A slight chance of rain showers by mid
afternoon. Waves building to 10 to 14 feet occasionally to
18 feet.
.TUESDAY NIGHT...East gales to 40 knots. Rain showers. Waves
subsiding to 8 to 11 feet occasionally to 14 feet.
.WEDNESDAY...Northeast winds to 30 knots with gale force gusts to
35 knots through early afternoon. Rain showers. Waves building to
9 to 12 feet occasionally to 15 feet, then subsiding to 6 to 9
feet occasionally to 11 feet.
.WEDNESDAY NIGHT...North winds 10 to 20 knots becoming west 15 to
25 knots after midnight. Rain showers likely through midnight.
Waves subsiding to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. Waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots. Waves subsiding to
2 to 4 feet.
.FRIDAY...West winds 20 to 30 knots becoming northwest 15 to
25 knots. A chance of rain showers, possibly mixed with snow.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 1 to 3 feet.
.SATURDAY...West winds 15 to 25 knots becoming northwest 10 to
20 knots. Waves subsiding to 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-
1000 PM EDT Mon Apr 15 2024

...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY
AFTERNOON...

.REST OF TONIGHT...South winds less than 10 knots becoming east
5 to 15 knots after midnight. Waves calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible late. Waves building
to 9 to 12 feet occasionally to 15 feet.
.TUESDAY NIGHT...East gales to 35 knots. A chance of rain showers
through midnight, then rain showers after midnight. Waves
subsiding to 6 to 9 feet occasionally to 11 feet, then building
to 10 to 14 feet occasionally to 18 feet.
.WEDNESDAY...East gales to 40 knots. Rain showers. Waves building
to 11 to 15 feet occasionally to 19 feet, then subsiding to 9 to
12 feet occasionally to 15 feet.
.WEDNESDAY NIGHT...East winds 15 to 25 knots veering west after
midnight. Rain showers likely through midnight, then a chance of
rain showers after midnight. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.THURSDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. Waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots veering northwest. Waves
building to 3 to 6 feet occasionally to 8 feet, then subsiding to
2 to 4 feet.
.SATURDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to 1 to 3 feet.

$$

LSZ264-161000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 PM EDT Mon Apr 15 2024

...GALE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY
EVENING...

.REST OF TONIGHT...West winds less than 10 knots veering north
after midnight, then becoming northeast 5 to 15 knots late. Waves
calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. Waves building to 3 to 6 feet occasionally to
8 feet.
.TUESDAY NIGHT...East winds 20 to 30 knots increasing to gales to
40 knots after midnight. A slight chance of rain showers through
midnight, then rain showers after midnight. Waves building to
10 to 14 feet occasionally to 18 feet.
.WEDNESDAY...East gales to 40 knots. Rain showers. Waves building
to 11 to 15 feet occasionally to 19 feet, then subsiding to 9 to
12 feet occasionally to 15 feet.
.WEDNESDAY NIGHT...East winds 20 to 30 knots becoming west 10 to
20 knots after midnight. Rain showers through midnight, then a
chance of rain showers after midnight. Waves subsiding to 3 to
5 feet occasionally to 7 feet.
.THURSDAY...West winds 20 to 30 knots. Waves building to 3 to
6 feet occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots veering northwest. Waves
building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY...Northwest winds 10 to 20 knots backing west. Waves
subsiding to 1 to 3 feet.

$$

LSZ265-161000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 PM EDT Mon Apr 15 2024

...GALE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY
EVENING...

.REST OF TONIGHT...Southwest winds 5 to 15 knots backing east
after midnight, then backing northeast late. Waves calm to
2 feet.
.TUESDAY...East winds 5 to 15 knots increasing to 20 to 30 knots.
Waves building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY NIGHT...East winds 20 to 30 knots increasing to gales to
35 knots late. A slight chance of rain showers through midnight,
then rain showers after midnight. Waves building to 8 to 11 feet
occasionally to 14 feet.
.WEDNESDAY...East gales to 35 knots diminishing to 20 to 30 knots
late. Rain showers. Waves building to 9 to 12 feet occasionally
to 15 feet, then subsiding to 7 to 10 feet occasionally to 13
feet.
.WEDNESDAY NIGHT...East winds 10 to 20 knots veering west after
midnight. Rain showers through midnight, then a chance of rain
showers after midnight. Waves subsiding to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots. Waves subsiding to calm to
2 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots. Waves building to
1 to 3 feet.
.FRIDAY...West winds 20 to 30 knots. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 15 to 25 knots becoming west 10 to
20 knots. Waves subsiding to 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-
1000 PM EDT Mon Apr 15 2024

...GALE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY
EVENING...

.REST OF TONIGHT...Northwest winds 5 to 15 knots veering
northeast late. Waves 1 to 3 feet subsiding to calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots increasing to 15 to 25 knots.
Waves building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY NIGHT...East winds 20 to 30 knots increasing to gales to
35 knots after midnight. Rain showers after midnight. Waves
building to 10 to 14 feet occasionally to 18 feet.
.WEDNESDAY...East gales to 40 knots. Rain showers. Waves
subsiding to 8 to 11 feet occasionally to 14 feet.
.WEDNESDAY NIGHT...East gales to 35 knots becoming west 10 to
20 knots after midnight. Rain showers through midnight, then a
chance of rain showers after midnight. Waves subsiding to 3 to 5
feet occasionally to 7 feet.
.THURSDAY...West winds 15 to 25 knots. Waves building to 3 to
6 feet occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots. Waves subsiding to
3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 20 to 30 knots. Waves building to 3 to
6 feet occasionally to 8 feet.
.SATURDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots. Waves subsiding to 1 to 3 feet.

$$

LSZ267-161000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 PM EDT Mon Apr 15 2024

...GALE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY
EVENING...

.REST OF TONIGHT...Northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight, then veering northeast late. Waves
2 to 4 feet subsiding to calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots increasing to 10 to
20 knots late. Waves calm to 2 feet.
.TUESDAY NIGHT...East winds 15 to 25 knots increasing to gales to
35 knots. A chance of rain showers after midnight. Waves building
to 7 to 10 feet occasionally to 13 feet.
.WEDNESDAY...East gales to 40 knots veering southeast by mid
afternoon. Rain showers. Waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet.
.WEDNESDAY NIGHT...Southeast gales to 35 knots diminishing to
15 to 25 knots after midnight. Rain showers. Waves subsiding to
2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of rain showers.
Waves subsiding to 1 to 3 feet, then building to 2 to 4 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots increasing to 15 to
25 knots after midnight. A chance of rain showers. Waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots increasing to 20 to 30 knots.
A chance of rain showers, possibly mixed with snow. Waves
building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots. Waves subsiding to 2 to 4 feet.

$$
LSZ261-161000-
MAFOR 1603/
Superior West...GALE WARNING IN EFFECT...11200 11210 11220 11230
11240 13250. A chance of rain showers Tuesday evening. Waves 2
feet or less overnight building to 8 to 11 feet Tuesday. Waves 10
to 14 feet Tuesday evening.

Superior North Central 11700 11810 11120 12220 12230 11240. Waves
1 foot or less overnight building to 3 to 6 feet by Tuesday
evening.

Superior South Central 11600 11800 11100 11210 11220 12230 11240. Waves
1 to 3 feet overnight building 4 to 7 feet by Tuesday evening.

Superior East 11710 11810 12110 11210 11110 11220 11230. Waves 1
to 3 feet overnight and Tuesday building to 3 to 5 feet Tuesday
evening.


$$

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