Great Lakes Forecast
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262
FZUS63 KMQT 200140
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
940 PM EDT Mon Jun 19 2017

For waters beyond five 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...Low pressure of 29.3 inches across Northern Quebec
will will remain nearly stationary through Wednesday morning. A
30.0 inch ridge over the northern Plains will drift to the Upper
Great Lakes through Wednesday. The ridge will shift over the Lower
Great Lakes on Thursday as a 29.4 inch low develops near Lake
Winnipeg. An associated 29.7 inch trough will linger over the
Upper Great Lakes through Friday. A weak 29.9 inch trough will
follow a quick moving ridge on Saturday.

LSZ162-200945-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
940 PM EDT Mon Jun 19 2017 /840 PM CDT Mon Jun 19 2017/

.REST OF TONIGHT...West winds 5 to 15 knots. A slight chance of
showers after midnight. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots. A slight chance of showers
through early afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots veering northwest after
midnight, then backing west late. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots backing southeast by
mid afternoon. A slight chance of showers by mid afternoon. Waves
calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. A chance of showers. Waves calm to 2 feet.
.THURSDAY...West winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves building to 1 to 3 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots. Waves 1 to 3 feet.
.FRIDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. Waves subsiding to calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots backing north. A chance
of rain showers. Waves calm to 2 feet.

$$

LSZ263-200945-
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-
940 PM EDT Mon Jun 19 2017

.REST OF TONIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.TUESDAY...West winds 5 to 15 knots. A slight chance of showers
through early afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots veering west after
midnight, then diminishing to less than 10 knots late. Waves calm
to 2 feet.
.WEDNESDAY...Southwest winds less than 10 knots becoming south
5 to 15 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. A chance of showers through midnight, then
showers likely after midnight. Waves building to 1 to 3 feet.
.THURSDAY...Southwest winds 10 to 20 knots. A chance of showers
through early afternoon. Waves building to 2 to 4 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots. Waves subsiding to
1 to 3 feet.
.FRIDAY...West winds 5 to 15 knots veering north. Waves subsiding
to calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots backing northwest. A chance
of rain showers. Waves calm to 2 feet.

$$

LSZ264-200945-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
940 PM EDT Mon Jun 19 2017

.REST OF TONIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.TUESDAY...West winds 5 to 15 knots. A slight chance of showers
through early afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots backing southwest after
midnight, then becoming west less than 10 knots late. Waves calm
to 2 feet.
.WEDNESDAY...West winds less than 10 knots backing south by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. Rain showers likely after
midnight. Waves building to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...Southwest winds 10 to 20 knots. A chance of rain
showers through early afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots. Waves 2 to 4 feet.
.FRIDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.SATURDAY...North winds 5 to 15 knots backing northwest. A chance
of rain showers. Waves calm to 2 feet.

$$

LSZ265-200945-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
940 PM EDT Mon Jun 19 2017

.REST OF TONIGHT...West winds 5 to 15 knots increasing to 10 to
20 knots late. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots. A slight chance of showers
through early afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. Showers likely after midnight. Waves building to
2 to 4 feet.
.THURSDAY...South winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. A chance of showers through early
afternoon. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots. Waves 1 to 3 feet.
.FRIDAY...West winds 10 to 20 knots veering northwest. Waves
subsiding to calm to 2 feet.
.SATURDAY...North winds 10 to 20 knots backing northwest. A
chance of showers. Waves calm to 2 feet.

$$

LSZ266-200945-
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-
940 PM EDT Mon Jun 19 2017

.REST OF TONIGHT...Southwest winds 5 to 15 knots veering west
after midnight, then increasing to 10 to 20 knots late. Patchy
fog. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots. Patchy fog through early
afternoon. A slight chance of showers through early afternoon.
Waves building to 1 to 3 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 knots becoming south
15 to 25 knots after midnight. A chance of rain showers after
midnight. Waves building to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...South winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. A chance of rain showers. Waves
building to 3 to 6 feet occasionally to 8 feet, then subsiding to
2 to 4 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Waves 2 to 4 feet.
.FRIDAY...West winds 10 to 20 knots veering northwest. Waves
subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots veering north. A
chance of rain showers. Waves calm to 2 feet.

$$

LSZ267-200945-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
940 PM EDT Mon Jun 19 2017

.REST OF TONIGHT...West winds 5 to 15 knots backing southwest by
midnight, then veering west late. Areas of fog. A slight chance
of showers after midnight. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. Patchy fog through early afternoon. A slight
chance of showers through early afternoon. Waves building to 1 to
3 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight, then becoming west 5 to 15 knots late. Waves
subsiding to calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. A chance of showers after
midnight. Waves building to 1 to 3 feet.
.THURSDAY...South winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. Showers likely through early
afternoon. Waves 1 to 3 feet.
.THURSDAY NIGHT...West winds 10 to 20 knots. Waves building to
2 to 4 feet.
.FRIDAY...West winds 10 to 20 knots veering northwest. Waves
subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots veering north. A
chance of rain showers. Waves calm to 2 feet.

$$
LSZ261-200945-
MAFOR 2003/
Superior West 12610 13600 11610 11510 11610. Waves 1 to 2 feet.

Superior North Central 12610 11700 14610 11610. Waves 1 to 2
feet.

Superior South Central 16610. Patchy fog late this evening. Waves
1 to 2 feet.

Superior East 11503 12600 14610 11620. Waves 1 to 3 feet.


$$

Kluber

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

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



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