019
FZUS63 KMQT 170141
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
941 PM EDT Fri Aug 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...A 29.7 inch low will slide into Lower Michigan
Saturday morning and over the Lower Great Lakes Sunday morning. In
it`s wake, weak ridging of 30.0 inches will move back over Lake
Superior Sunday, building to near 30.2 inches Monday. The 30.2
inch ridge remains until Tuesday. Ridging over the Great Lakes
weakens to 30.1 inches through Thursday as the high pressure
tracks toward New England.

LSZ162-170945-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
941 PM EDT Fri Aug 16 2024 /841 PM CDT Fri Aug 16 2024/

.REST OF TONIGHT...Northeast winds 10 to 20 knots backing north
after midnight. Patchy fog. A slight chance of showers and
thunderstorms. Waves 1 to 3 feet.
.SATURDAY...North winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing west late. A slight
chance of showers. A slight chance of thunderstorms by mid
afternoon. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.
.SUNDAY...North winds 5 to 15 knots veering east by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots. Waves calm to
2 feet.
.MONDAY...Northeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots backing northeast after
midnight. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots becoming south 10 to
20 knots. Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots veering southwest. Waves
calm to 2 feet.

$$

LSZ263-170945-
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-
941 PM EDT Fri Aug 16 2024

.REST OF TONIGHT...Northeast winds 10 to 20 knots backing north
late. Patchy dense fog. A slight chance of showers. Waves 1 to
3 feet.
.SATURDAY...North winds 10 to 20 knots. A slight chance of
showers. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...North winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A slight chance of showers through
midnight. Waves building to 1 to 3 feet.
.SUNDAY...North winds 10 to 20 knots veering northeast by mid
afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots veering east by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ264-170945-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
941 PM EDT Fri Aug 16 2024

.REST OF TONIGHT...Northeast winds 5 to 15 knots becoming north
10 to 20 knots late. Areas of dense fog by late evening. Patchy
fog after midnight. A slight chance of showers. A slight chance
of thunderstorms after midnight. Waves 1 to 3 feet subsiding to
calm to 2 feet, then building to 1 to 3 feet.
.SATURDAY...North winds 10 to 20 knots. A slight chance of
showers. Waves 1 to 3 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots. A slight chance of
showers through midnight. Waves building to 2 to 4 feet.
.SUNDAY...North winds 10 to 20 knots backing northwest by mid
afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots veering northeast
after midnight. Waves calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots backing southeast
after midnight. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ265-170945-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
941 PM EDT Fri Aug 16 2024

.REST OF TONIGHT...Northeast winds 5 to 15 knots becoming north
10 to 20 knots late. Patchy fog by late evening. Areas of dense
fog after midnight. A chance of showers and isolated
thunderstorms. Waves calm to 2 feet.
.SATURDAY...North winds 10 to 20 knots. A slight chance of
thunderstorms through early afternoon. A chance of showers. Waves
building to 1 to 3 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots increasing to 15 to
25 knots late. A slight chance of thunderstorms through midnight.
A chance of showers. Waves building to 2 to 4 feet.
.SUNDAY...North winds 15 to 25 knots. Waves subsiding to 1 to
3 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. Waves subsiding to calm to 2 feet.
.MONDAY...Northeast winds 10 to 20 knots backing north by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering east after
midnight. Waves calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots becoming southwest 10 to
20 knots. Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots. Waves calm to 2 feet.

$$

LSZ266-170945-
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-
941 PM EDT Fri Aug 16 2024

.REST OF TONIGHT...East winds 5 to 15 knots backing northeast
late. Patchy fog by late evening. Areas of dense fog after
midnight. Scattered showers and a slight chance of thunderstorms.
Waves 1 to 3 feet subsiding to calm to 2 feet.
.SATURDAY...Northeast winds 10 to 20 knots backing north in the
afternoon. A slight chance of thunderstorms through early
afternoon. A slight chance of showers. Waves building to 1 to
3 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots increasing to 15 to
25 knots after midnight. A chance of showers and a slight chance
of thunderstorms. Waves building to 3 to 5 feet occasionally to
7 feet.
.SUNDAY...North winds 15 to 25 knots. Waves subsiding to 2 to
4 feet.
.SUNDAY NIGHT...North winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. Waves subsiding to 1 to 3 feet.
.MONDAY...North winds 10 to 20 knots. Waves subsiding to calm to
2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering northeast after
midnight. Waves calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots. Waves calm to 2 feet.

$$

LSZ267-170945-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
941 PM EDT Fri Aug 16 2024

.REST OF TONIGHT...Southeast winds 10 to 20 knots backing east
after midnight. Patchy fog. Scattered showers and thunderstorms.
Waves calm to 2 feet.
.SATURDAY...Northeast winds 10 to 20 knots backing north in the
afternoon. A slight chance of showers and thunderstorms. Waves
building to 1 to 3 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots increasing to 15 to
25 knots after midnight. A slight chance of showers and
thunderstorms. Waves building to 2 to 4 feet.
.SUNDAY...North winds 15 to 25 knots. Waves 2 to 4 feet.
.SUNDAY NIGHT...North winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. Waves subsiding to 1 to 3 feet.
.MONDAY...North winds 10 to 20 knots backing northwest by mid
afternoon. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...North winds 10 to 20 knots veering northeast
after midnight. Waves calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots veering south. Waves calm to
2 feet.
.WEDNESDAY...South winds 10 to 20 knots. Waves calm to 2 feet.

$$
LSZ261-170945-
MAFOR 1703/
Superior West 11120 13820 12810 12710. Waves 1 to 3 feet.

Superior North Central 11114 12110 11810 14820. Waves 1 to 3
feet.

Superior South Central 11100 12114 13810 12820. A chance of
showers. Waves 1 to 3 feet overnight and Saturday. Waves 2 to 4
feet Saturday evening.

Superior East 11210 19216 11200 19204 11204 11100 11800 12810
11820. Waves 1 to 3 feet.

$$

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