Great Lakes Forecast
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FZUS63 KMQT 280151
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
951 PM EDT Sun May 27 2018

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 29.9 inch trough over the lower Great Lakes will
remain in place through Memorial Day until high pressure of 30.1
inches moves over northern Ontario and the upper Great Lakes
Monday evening and over Quebec on Tuesday. A 29.5 inch low
pressure system over the Dakotas on Wednesday morning will track
east and weaken to 29.6 inches over the upper Great Lakes by
Thursday morning as a high pressure ridge averaging 30.1 inches
settles across northern Ontario. The low will weaken further to
29.7 inches as it reaches the lower Great Lakes Friday while the
ridge builds to 30.2 inches over the Upper Great Lakes Friday
through Saturday.

LSZ162-281000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
951 PM EDT Sun May 27 2018 /851 PM CDT Sun May 27 2018/

.REST OF TONIGHT...East winds less than 10 knots becoming
northeast 5 to 15 knots after midnight, then backing north late.
Areas of fog. A chance of showers and thunderstorms. Waves calm
to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots veering east in the
afternoon, then backing northeast late. A slight chance of
showers and thunderstorms through early afternoon. Areas of fog.
Waves calm to 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots. Patchy fog through
midnight. A slight chance of rain showers after midnight. Waves
building to 1 to 3 feet.
.TUESDAY...Northeast winds 5 to 15 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...Northeast winds 5 to 15 knots veering east after
midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...East winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.
.WEDNESDAY NIGHT...East winds less than 10 knots becoming south
5 to 15 knots after midnight. A chance of showers. Waves calm to
2 feet.
.THURSDAY...West winds 5 to 15 knots veering northeast. Waves
building to 1 to 3 feet.
.FRIDAY...East winds 5 to 15 knots. Waves building to 2 to
4 feet.

$$

LSZ263-281000-
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-
951 PM EDT Sun May 27 2018

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT MONDAY...

.REST OF TONIGHT...Northeast winds 5 to 15 knots becoming east
less than 10 knots after midnight, then becoming north 5 to
15 knots late. Areas of dense fog. A chance of rain showers. A
chance of thunderstorms after midnight. Waves calm to 2 feet.
.MONDAY...North winds 5 to 15 knots veering northeast in the
afternoon. A slight chance of showers and thunderstorms through
early afternoon. Areas of dense fog. Waves calm to 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots veering east late.
Patchy fog through midnight. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots. A slight chance of showers
by mid afternoon. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves subsiding to 1 to 3 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots backing east by mid
afternoon. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. A chance of showers. Waves subsiding to calm to
2 feet.
.THURSDAY...North winds 5 to 15 knots veering northeast. Waves
building to 2 to 4 feet.
.FRIDAY...Northeast winds 5 to 15 knots. Waves subsiding to 1 to
3 feet, then building to 2 to 4 feet.

$$

LSZ264-281000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
951 PM EDT Sun May 27 2018

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT MONDAY...

.REST OF TONIGHT...South winds 5 to 15 knots backing southeast
after midnight, then backing northeast late. Areas of dense fog.
A slight chance of showers and thunderstorms after midnight.
Waves calm to 2 feet.
.MONDAY...North winds 5 to 15 knots backing northwest late. A
slight chance of rain showers through early afternoon. Areas of
dense fog through early afternoon, then patchy fog by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering east after
midnight, then increasing to 10 to 20 knots late. Patchy fog
through midnight. Waves calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots veering southeast by mid
afternoon. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. Waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 knots. A chance of
showers. Waves subsiding to 1 to 3 feet.
.THURSDAY...North winds 5 to 15 knots increasing to 10 to
20 knots. Waves subsiding to calm to 2 feet, then building to
3 to 6 feet occasionally to 8 feet.
.FRIDAY...Northeast winds 10 to 20 knots. Waves subsiding to 2 to
4 feet.

$$

LSZ265-281000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
951 PM EDT Sun May 27 2018

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT MONDAY...

.REST OF TONIGHT...Southeast winds 5 to 15 knots veering south
late. Areas of dense fog. A chance of rain showers and a slight
chance of thunderstorms after midnight. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots becoming north 10 to 20 knots
in the afternoon, then diminishing to 5 to 15 knots late. A
chance of showers and a slight chance of thunderstorms through
early afternoon. Areas of dense fog through early afternoon, then
patchy fog by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering east after
midnight. Patchy fog through midnight. Waves 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...Southeast winds 10 to 20 knots. Waves subsiding
to 1 to 3 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A chance of showers. Waves
subsiding to calm to 2 feet.
.THURSDAY...North winds 5 to 15 knots increasing to 10 to
20 knots. A chance of rain showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY...North winds 10 to 20 knots veering northeast. Waves
subsiding to 2 to 4 feet.

$$

LSZ266-281000-
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-
951 PM EDT Sun May 27 2018

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT MONDAY...

.REST OF TONIGHT...South winds 5 to 15 knots backing southeast
after midnight. Areas of dense fog. A chance of rain showers and
a slight chance of thunderstorms after midnight. Waves calm to
2 feet.
.MONDAY...West winds 10 to 20 knots becoming north 5 to 15 knots
in the afternoon, then backing northwest late. A slight chance of
rain showers through early afternoon. Areas of dense fog. Waves
calm to 2 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots veering northeast
after midnight, then veering east late. Patchy fog through
midnight. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves building to 2 to 4 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots. Waves subsiding to
1 to 3 feet, then building to 2 to 4 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A chance of showers. Waves
subsiding to 1 to 3 feet.
.THURSDAY...North winds 5 to 15 knots increasing to 10 to
20 knots. A chance of thunderstorms. A chance of rain showers.
Waves subsiding to calm to 2 feet, then building to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY...North winds 15 to 25 knots becoming northeast 10 to
20 knots. Waves subsiding to 2 to 4 feet.

$$

LSZ267-281000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
951 PM EDT Sun May 27 2018

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 PM EDT MONDAY...

.REST OF TONIGHT...South winds 5 to 15 knots backing southeast
after midnight. Areas of dense fog. A slight chance of rain
showers after midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots veering northwest in the
afternoon, then increasing to 10 to 20 knots late. A slight
chance of rain showers through early afternoon. Areas of dense
fog. Waves calm to 2 feet.
.MONDAY NIGHT...Northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight, then veering east late. Patchy fog
through midnight. Waves calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots veering southeast by mid
afternoon. Waves building to 1 to 3 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. Waves 1 to 3 feet.
.WEDNESDAY...Southeast winds 10 to 20 knots. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Southeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. Showers after midnight. Waves
subsiding to calm to 2 feet.
.THURSDAY...South winds 10 to 20 knots backing north. A chance of
thunderstorms. A chance of rain showers. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.FRIDAY...North winds 15 to 25 knots veering northeast. Waves
building to 2 to 4 feet.

$$
LSZ261-281000-
MAFOR 2803/
Superior West...Dense Fog Advisory in effect...12103 11803 12103
11203 11100 11110. Chance of showers and thunderstorms overnight
through mid morning Monday. Patchy fog through early Monday
evening. Waves 1 foot or less.

Superior North Central...Dense Fog Advisory in effect...12304
11204 12804 11703 11700 11800. Patchy fog late Monday through
early Monday evening. Waves 1 foot or less.

Superior South Central...Dense Fog Advisory in effect...12304
11404 11604 11804 13800. Patchy fog late. Chance of showers
Monday morning. Patchy fog through early Monday evening. Waves 1
foot or less.

Superior East...Dense Fog Advisory in effect...11404 13304 11104
11703 12700. Patchy fog through early Monday evening. Waves 1
foot or less.

$$

RJT

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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