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Hurricane Symbol Storm Special! View the latest observations near East Pacific Tropical Storm Alvin.

National Weather Service Marine Forecast FZUS63 KMQT

FZUS63 KMQT 270145
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
945 PM EDT Wed Jun 26 2019

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
Broad high pressure of 30.2 inches covering much of
the eastern United States will gradually build a 30.1 inch ridge
northwestward across the Upper Great Lakes overnight and into
Thursday. It is expected to generally persist through the weekend,
but occasional brief, weak troughing of 30.0 inches will be
possible Friday morning and again Saturday night into Sunday. The
ridge will weaken and a 29.8 inch trough will cross the Upper
Great Lakes Sunday night into Monday, followed by 30.0 inch
ridging returning on Tuesday.

LSZ162-270945-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
945 PM EDT Wed Jun 26 2019 /845 PM CDT Wed Jun 26 2019/

REST OF TONIGHT
Southwest winds 5 to 15 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.

THURSDAY
Southwest winds less than 10 knots becoming south
5 to 15 knots in the afternoon, then becoming east less than
10 knots late. A slight chance of showers and thunderstorms by
mid afternoon. Waves calm to 2 feet.

THURSDAY NIGHT
East winds less than 10 knots backing north
late. A chance of thunderstorms through midnight. A chance of
showers. Waves calm to 2 feet.

FRIDAY
Northeast winds 5 to 15 knots veering east by mid
afternoon. Waves calm to 2 feet.

FRIDAY NIGHT
Northeast winds less than 10 knots. Waves calm to
2 feet.

SATURDAY
East winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. Waves calm to 2 feet.

SATURDAY NIGHT
East winds 5 to 15 knots diminishing to less
than 10 knots after midnight. A chance of showers and
thunderstorms. Waves calm to 2 feet.

SUNDAY
Northeast winds 5 to 15 knots backing northwest. A
chance of showers. Waves calm to 2 feet.

MONDAY
West winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.



LSZ263-270945-
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-
945 PM EDT Wed Jun 26 2019

REST OF TONIGHT
Southwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. Waves 2 to 4 feet subsiding to calm
to 2 feet.

THURSDAY
Southwest winds 5 to 15 knots backing east late.
Waves calm to 2 feet.

THURSDAY NIGHT
South winds 5 to 15 knots backing east after
midnight, then becoming north less than 10 knots late. A chance
of thunderstorms through midnight. A chance of showers. Waves
calm to 2 feet.

FRIDAY
Northeast winds 5 to 15 knots becoming south less than
10 knots by mid afternoon. A slight chance of showers by mid
afternoon. Waves calm to 2 feet.

FRIDAY NIGHT
East winds 5 to 15 knots becoming northeast less
than 10 knots after midnight. Waves calm to 2 feet.

SATURDAY
Northeast winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. Waves calm to 2 feet.

SATURDAY NIGHT
East winds less than 10 knots. Waves calm to
2 feet.

SUNDAY
East winds 5 to 15 knots veering west. A chance of
showers. Waves calm to 2 feet.

MONDAY
West winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.



LSZ264-270945-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
945 PM EDT Wed Jun 26 2019

REST OF TONIGHT
Southwest winds 5 to 15 knots. Waves 2 to
4 feet subsiding to 1 to 3 feet.

THURSDAY
Southwest winds 5 to 15 knots becoming southeast less
than 10 knots late. Waves subsiding to calm to 2 feet.

THURSDAY NIGHT
Southeast winds 5 to 15 knots becoming east
less than 10 knots after midnight. A slight chance of rain
showers. Waves calm to 2 feet.

FRIDAY
North winds less than 10 knots veering south by mid
afternoon. Waves calm to 2 feet.

FRIDAY NIGHT
East winds less than 10 knots backing north after
midnight. Waves calm to 2 feet.

SATURDAY
North winds less than 10 knots veering east by mid
afternoon. Waves calm to 2 feet.

SATURDAY NIGHT
Southeast winds less than 10 knots increasing
to 5 to 15 knots after midnight. Waves calm to 2 feet.

SUNDAY
Southeast winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.

MONDAY
West winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.



LSZ265-270945-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
945 PM EDT Wed Jun 26 2019

REST OF TONIGHT
Southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight, then veering west late. Waves calm
to 2 feet.

THURSDAY
Southwest winds 5 to 15 knots backing southeast in
the afternoon, then becoming east 10 to 20 knots late. Waves calm
to 2 feet.

THURSDAY NIGHT
Southeast winds 5 to 15 knots veering south
after midnight, then backing north late. A chance of showers and
thunderstorms. Waves calm to 2 feet.

FRIDAY
Northeast winds 5 to 15 knots veering east by mid
afternoon. A slight chance of showers and thunderstorms by mid
afternoon. Waves calm to 2 feet.

FRIDAY NIGHT
East winds less than 10 knots veering southeast
after midnight. Waves calm to 2 feet.

SATURDAY
Northeast winds 5 to 15 knots veering east by mid
afternoon. Waves calm to 2 feet.

SATURDAY NIGHT
East winds 5 to 15 knots veering southeast
after midnight. Waves calm to 2 feet.

SUNDAY
East winds 5 to 15 knots veering west. A chance of
showers and thunderstorms. Waves calm to 2 feet.

MONDAY
West winds 10 to 20 knots diminishing to 5 to 15 knots.
A chance of showers. Waves calm to 2 feet.



LSZ266-270945-
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-
945 PM EDT Wed Jun 26 2019

REST OF TONIGHT
Southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then veering west late. Waves 2 to
4 feet subsiding to 1 to 3 feet.

THURSDAY
West winds 5 to 15 knots becoming south less than
10 knots in the afternoon, then becoming east 5 to 15 knots late.
Waves subsiding to calm to 2 feet.

THURSDAY NIGHT
Southeast winds 5 to 15 knots veering south
after midnight, then backing southeast late. A chance of showers
and thunderstorms. Waves calm to 2 feet.

FRIDAY
Northeast winds 5 to 15 knots diminishing to less than
10 knots by mid afternoon. Waves calm to 2 feet.

FRIDAY NIGHT
East winds less than 10 knots backing northwest
after midnight. Waves calm to 2 feet.

SATURDAY
Northwest winds less than 10 knots. Waves calm to
2 feet.

SATURDAY NIGHT
Northwest winds less than 10 knots becoming
east 5 to 15 knots after midnight. Waves calm to 2 feet.

SUNDAY
Southeast winds 5 to 15 knots veering south. A chance
of showers and thunderstorms. Waves calm to 2 feet.

MONDAY
West winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.



LSZ267-270945-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
945 PM EDT Wed Jun 26 2019

REST OF TONIGHT
Southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight, then diminishing to 5 to 15 knots
late. Waves 1 to 3 feet subsiding to calm to 2 feet.

THURSDAY
Southwest winds 5 to 15 knots backing south in the
afternoon, then backing east late. Waves calm to 2 feet.

THURSDAY NIGHT
East winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. A chance of showers. Waves calm to
2 feet.

FRIDAY
Southeast winds 5 to 15 knots backing north by mid
afternoon. Waves calm to 2 feet.

FRIDAY NIGHT
Northwest winds 5 to 15 knots. Waves calm to
2 feet.

SATURDAY
Northwest winds 5 to 15 knots. Waves calm to 2 feet.

SATURDAY NIGHT
Northwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.

SUNDAY
East winds 5 to 15 knots veering south. A chance of
showers. Waves calm to 2 feet.

MONDAY
West winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.


LSZ261-270945-
MAFOR 2703/
Superior West 12510 13500 11300 11200 11300. A chance of showers
Thursday evening. Waves 1 to 4 feet.

Superior North Central 14510 11500 11400 12300. Waves 1 to 4 feet.

Superior South Central 12510 12610 11400 13300. A chance of
showers and thunderstorms Thursday evening. Waves 2 feet or less.

Superior East 13510 12500 11400 12200. Waves 1 to 3 feet.



RJC

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

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