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000
FZUS63 KMQT 140813
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
413 AM EDT Sun Apr 14 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 30.0 inch high pressure ridge over the Prairie
Provinces will extend 29.8 inch ridging into the Upper Mississippi
Valley this afternoon. This ridge will build to 30.1 inches as it
shifts across the Upper Great Lakes tonight and Monday. On
Tuesday, the ridge at 30.2 inches will extend from Hudson Bay to
the Lower Great Lakes while deep low pressure of 29.1 inches lifts
northeast across the central Plains. This low will then weaken to
29.4 inches as it tracks to Wisconsin on Wednesday, and it will
weaken further to 29.7 inches as it moves over northern Ontario on
Thursday. In its wake, a 30.2 inch high pressure ridge will build
southeast across the Plains to the Mid-Mississippi Valley during
Thursday and Thursday night.

LSZ162-141615-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
413 AM EDT Sun Apr 14 2024 /313 AM CDT Sun Apr 14 2024/

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...West winds 10 to 20 knots backing south late. Waves calm
to 2 feet.
.TONIGHT...West winds 5 to 15 knots becoming northwest 10 to
20 knots after midnight, then diminishing to 5 to 15 knots late.
Waves calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots backing southwest in the
afternoon, then backing south late. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots increasing to 15 to
25 knots after midnight. A slight chance of rain showers after
midnight. Waves building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...East winds 20 to 30 knots increasing to gales to
40 knots by mid afternoon. A chance of rain showers. Waves
building to 9 to 12 feet occasionally to 15 feet.
.TUESDAY NIGHT...East gales to 40 knots. Rain showers. Waves
subsiding to 8 to 11 feet occasionally to 14 feet.
.WEDNESDAY...Northeast gales to 35 knots becoming west 15 to
25 knots. Rain showers, then a chance of rain showers. Waves
subsiding to 2 to 4 feet.
.THURSDAY...West winds 20 to 30 knots. A chance of rain showers.
A chance of snow showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.

$$

LSZ263-141615-
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-
413 AM EDT Sun Apr 14 2024

.EARLY THIS MORNING...North winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...North winds 5 to 15 knots veering east in the afternoon,
then veering south late. Waves calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering northwest late. Waves
calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots backing southwest late.
Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...East winds 15 to 25 knots increasing to gales to
35 knots by mid afternoon. Waves building to 6 to 9 feet
occasionally to 11 feet.
.TUESDAY NIGHT...East gales to 40 knots. Rain showers. Waves
building to 9 to 12 feet occasionally to 15 feet.
.WEDNESDAY...East gales to 35 knots becoming west 10 to 20 knots.
Rain showers. Waves subsiding to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of rain showers.
A chance of snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.

$$

LSZ264-141615-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
413 AM EDT Sun Apr 14 2024

.EARLY THIS MORNING...Northeast winds 5 to 15 knots. Waves 1 to
3 feet.
.TODAY...North winds 5 to 15 knots backing west late. Waves
subsiding to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering northwest late. Waves
building to 1 to 3 feet.
.MONDAY...Northwest winds 5 to 15 knots backing southwest late.
Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots backing east after
midnight. Waves calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...East winds 20 to 30 knots increasing to gales to
35 knots after midnight. A chance of rain showers through
midnight, then rain showers after midnight. Waves building to
9 to 12 feet occasionally to 15 feet.
.WEDNESDAY...East gales to 35 knots becoming west 15 to 25 knots.
Rain showers. Waves subsiding to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of rain showers.
A chance of snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.

$$

LSZ265-141615-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
413 AM EDT Sun Apr 14 2024

.EARLY THIS MORNING...Northwest winds 5 to 15 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TODAY...Northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. Waves building to 1 to 3 feet, then subsiding to calm to
2 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming west 10 to
20 knots after midnight. Waves building to 1 to 3 feet.
.MONDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then veering north late. Waves
subsiding to calm to 2 feet.
.MONDAY NIGHT...South winds 5 to 15 knots backing east after
midnight. Waves calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...East winds 20 to 30 knots. A chance of rain
showers through midnight, then rain showers after midnight. Waves
building to 7 to 10 feet occasionally to 13 feet.
.WEDNESDAY...East winds 20 to 30 knots veering west. Rain
showers, then a chance of rain showers. Waves subsiding to 2 to
4 feet.
.THURSDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots. A chance of rain showers. A chance of snow showers.
Waves subsiding to 1 to 3 feet.

$$

LSZ266-141615-
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-
413 AM EDT Sun Apr 14 2024

.EARLY THIS MORNING...East winds 5 to 15 knots. Waves 1 to
3 feet.
.TODAY...Northeast winds 5 to 15 knots becoming north 10 to
20 knots in the afternoon, then becoming northwest 5 to 15 knots
late. Waves subsiding to calm to 2 feet, then building to 1 to
3 feet.
.TONIGHT...West winds 5 to 15 knots becoming northwest 10 to
20 knots late. Waves subsiding to calm to 2 feet, then building
to 2 to 4 feet.
.MONDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. Waves subsiding to 1 to 3 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots veering northeast
after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...East winds 20 to 30 knots increasing to gales to
35 knots after midnight. A 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. Rain showers. Waves subsiding to 2 to 4 feet.
.THURSDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots. A chance of rain showers. A chance of snow showers.
Waves building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ267-141615-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
413 AM EDT Sun Apr 14 2024

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TODAY...East winds 5 to 15 knots becoming north 10 to 20 knots
in the afternoon, then backing northwest late. Waves building to
1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots. Waves subsiding to calm to
2 feet, then building to 2 to 4 feet.
.MONDAY...Northwest winds 10 to 20 knots. Waves subsiding to 1 to
3 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots veering northeast
after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...East winds 15 to 25 knots increasing to gales to
35 knots after midnight. A chance of rain showers through
midnight, then rain showers likely after midnight. Waves building
to 4 to 7 feet occasionally to 9 feet.
.WEDNESDAY...East gales to 35 knots diminishing to 20 to
30 knots. Rain showers. Waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 2 to 4 feet.
.THURSDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots. A chance of rain showers. A chance of snow showers.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet.

$$

LSZ261-141615-
MAFOR 1409/
Superior West 11700 12610 12410 11500 12710. Waves 1 to 3 feet.

Superior North Central 11110 11100 11810 14610 11720. Waves 1 to
3 feet.

Superior South Central 11700 13710 11610 12500 11610. Waves 2
feet or less.

Superior East 11310 11200 11100 11710 11720 11620 11610 11620.
Waves 1 to 3 feet.

$$

Voss

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

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