Great Lakes Forecast
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702
FZUS63 KMQT 181947
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
347 PM EDT Sun Jun 18 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 of 29.3 inches east of Lake Superior this
evening will lift northeast to James Bay and northern Quebec on
Monday, where it will remain nearly stationary through Wednesday
morning. A 30.0 inch ridge drifting across the northern Plains on
Monday will then move to the Upper Great Lakes through Wednesday.
The ridge will move to 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.

LSZ162-190400-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
347 PM EDT Sun Jun 18 2017 /247 PM CDT Sun Jun 18 2017/

.LATE THIS AFTERNOON...West winds 10 to 20 knots. A chance of
showers and a slight chance of thunderstorms. Waves calm to
2 feet.
.TONIGHT...West winds 10 to 20 knots veering northwest after
midnight, then backing west late. A slight chance of showers
through midnight. Waves calm to 2 feet.
.MONDAY...West winds 10 to 20 knots. A slight chance of showers.
Waves calm to 2 feet.
.MONDAY NIGHT...West winds 10 to 20 knots. A slight chance of
showers. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots backing southeast by
mid afternoon. A chance of rain showers. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 knots becoming west
5 to 15 knots after midnight. A chance of showers. Waves calm to
2 feet.
.THURSDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots veering northwest. Waves calm
to 2 feet.

$$

LSZ263-190400-
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-
347 PM EDT Sun Jun 18 2017

.LATE THIS AFTERNOON...West winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering northwest after
midnight, then backing west late. A chance of showers. Waves calm
to 2 feet.
.MONDAY...West winds 5 to 15 knots. A slight chance of showers.
Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots. A slight chance of showers.
Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds less than 10 knots becoming south
5 to 15 knots by mid afternoon. A chance of rain showers by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering
southwest after midnight. A chance of showers. Waves calm to
2 feet.
.THURSDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots. Waves building to 1 to
3 feet.

$$

LSZ264-190400-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
347 PM EDT Sun Jun 18 2017

.LATE THIS AFTERNOON...Northwest winds 5 to 15 knots. A chance of
showers. Waves calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots. A chance of showers.
Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots. A slight chance of showers.
Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots veering northwest late.
Waves calm to 2 feet.
.TUESDAY...Northwest winds 5 to 15 knots backing west by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds less than 10 knots. Waves calm to
2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. A chance of rain showers. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots veering west. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots veering northwest. Waves
building to 1 to 3 feet.

$$

LSZ265-190400-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
347 PM EDT Sun Jun 18 2017

.LATE THIS AFTERNOON...Northwest winds 15 to 25 knots. Showers.
Waves 1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots. A chance of showers. Waves
1 to 3 feet subsiding to calm to 2 feet.
.MONDAY...West winds 10 to 20 knots. A slight chance of showers.
Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots increasing to 10 to
20 knots after midnight. 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 10 to 20 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. A chance of showers. Waves calm to 2 feet.
.THURSDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots. Waves building to 1 to
3 feet.

$$

LSZ266-190400-
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-
347 PM EDT Sun Jun 18 2017

.LATE THIS AFTERNOON...Northwest winds 15 to 25 knots. Showers.
Waves 1 to 3 feet building to 2 to 4 feet.
.TONIGHT...Northwest winds 15 to 25 knots becoming west 10 to
20 knots late. A chance of showers. Waves 2 to 4 feet subsiding
to 1 to 3 feet.
.MONDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. A slight chance of showers. Waves subsiding to
calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A slight chance of showers after
midnight. Waves calm to 2 feet.
.TUESDAY...Northwest winds 10 to 20 knots backing west by mid
afternoon. 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. A chance of rain showers. Waves calm to 2 feet.
.THURSDAY...West winds 10 to 20 knots. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots. Waves building to 1 to
3 feet.

$$

LSZ267-190400-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
347 PM EDT Sun Jun 18 2017

.LATE THIS AFTERNOON...Northwest winds 15 to 25 knots. Showers.
Waves 1 to 3 feet building to 2 to 4 feet.
.TONIGHT...West winds 20 to 30 knots diminishing to 10 to
20 knots. Showers likely. Waves 2 to 4 feet.
.MONDAY...West winds 10 to 20 knots. A slight chance of showers
through early afternoon. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots backing southwest after
midnight, then veering west late. A slight chance of showers
after midnight. 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 5 to 15 knots becoming south
10 to 20 knots after midnight. A chance of showers. Waves calm to
2 feet.
.THURSDAY...West winds 10 to 20 knots. A chance of rain showers.
Waves calm to 2 feet.
.FRIDAY...West winds 10 to 20 knots. Waves building to 1 to
3 feet.

$$

LSZ261-190400-
MAFOR 1821/
Superior West 11610 11600 12710 11700 11600 11610 11510. Chance
of showers this evening. Waves 1 to 2 feet.

Superior North Central 11716 14710 11710 11600 11610. Chance of
showers late this evening. Waves 1 to 2 feet.

Superior South Central 11726 11720 12620 13610 11700. Chance of
showers tonight. Waves 1 to 3 feet.

Superior East 13736 11726 11620 13610. Chance of showers late
tonight. Waves 1 to 4 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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