National Weather Service United States Department of Commerce

 

FZUS63 KMQT 271415
GLFLS

Experimental Tabular Open Lake Forecast for Lake Superior
National Weather Service Negaunee MI
1015 AM EDT Wed Oct 27 2021

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 30.3 inch ridge currently centered over Quebec
will very slowly meander eastward, with a 29.4 inch trough slowly
scooting to the south across the Ohio Valley tomorrow into the
start of the weekend. The Upper Great Lakes will be wedged in
between these systems, with pressure lingering around 29.8 inches
into early next week. Starting Monday, pressures will begin to
rise locally as a 30.4 inch ridge builds in across the Plains.

LSZ162-272000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1015 AM EDT Wed Oct 27 2021 /915 AM CDT Wed Oct 27 2021/

.This Afternoon...
Weather.............Partly sunny, then slight chance of showers in
                              the afternoon.
Sfc winds...........Southeast 15 to 20 knots.
100-ft winds........Southeast 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.

.TONIGHT...
Weather.............Mostly cloudy with a slight chance of showers.
Sfc winds...........East 15 to 20 knots.
100-ft winds........East 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.

.THURSDAY...
Weather.............Mostly cloudy.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.

.THURSDAY NIGHT...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........North 10 to 15 knots.
100-ft winds........North 15 to 20 knots.
Sig waves...........2 to 4 feet.


.FORECAST DAYS 3 THROUGH 5...

.FRIDAY...North winds 10 to 15 knots. Waves 6 to 9 feet.
.SATURDAY...North winds 5 to 10 knots. Waves 4 to 6 feet.
.SUNDAY...Chance of showers. Northwest winds 15 to 20 knots.
Waves 5 to 7 feet.

$$

LSZ263-272000-
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-
1015 AM EDT Wed Oct 27 2021

.This Afternoon...
Weather.............Mostly sunny.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.

.TONIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southeast 15 to 20 knots.
100-ft winds........Southeast 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.

.THURSDAY...
Weather.............Mostly cloudy in the morning.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.

.THURSDAY NIGHT...
Weather.............Cloudy with chance of showers and drizzle, then
                              cloudy with chance of showers after midnight.
Sfc winds...........North 10 to 15 knots.
100-ft winds........North 15 to 20 knots.
Sig waves...........2 to 4 feet.


.FORECAST DAYS 3 THROUGH 5...

.FRIDAY...North winds 10 to 15 knots. Waves 6 to 9 feet.
.SATURDAY...North winds 5 to 10 knots. Waves 4 to 6 feet.
.SUNDAY...Chance of showers. Northwest winds 15 to 20 knots.
Waves 5 to 7 feet.

$$

LSZ264-272000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1015 AM EDT Wed Oct 27 2021

.This Afternoon...
Weather.............Partly sunny.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.

.TONIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southeast 15 to 20 knots.
100-ft winds........Southeast 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.

.THURSDAY...
Weather.............Mostly cloudy, then chance of drizzle in the
                              afternoon.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.

.THURSDAY NIGHT...
Weather.............Cloudy with chance of showers and drizzle, then
                              cloudy with chance of showers after midnight.
Sfc winds...........North 5 to 10 knots.
100-ft winds........North 10 to 15 knots.
Sig waves...........2 to 4 feet.


.FORECAST DAYS 3 THROUGH 5...

.FRIDAY...North winds 10 to 15 knots. Waves 6 to 9 feet.
.SATURDAY...North winds 5 to 10 knots. Waves 4 to 6 feet.
.SUNDAY...Chance of showers. Northwest winds 15 to 20 knots.
Waves 5 to 7 feet.

$$

LSZ265-272000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1015 AM EDT Wed Oct 27 2021

.This Afternoon...
Weather.............Mostly sunny.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........2 to 4 feet.

.TONIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southeast 15 to 20 knots.
100-ft winds........Southeast 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 5 feet.

.THURSDAY...
Weather.............Mostly cloudy, then chance of drizzle in the
                              afternoon.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........2 to 4 feet.

.THURSDAY NIGHT...
Weather.............Cloudy with chance of showers and drizzle, then
                              cloudy with chance of showers after midnight.
Sfc winds...........East 5 to 10 knots.
100-ft winds........East 10 to 15 knots.
Sig waves...........2 to 4 feet.


.FORECAST DAYS 3 THROUGH 5...

.FRIDAY...North winds 10 to 15 knots. Waves 6 to 9 feet.
.SATURDAY...North winds 5 to 10 knots. Waves 4 to 6 feet.
.SUNDAY...Chance of showers. Northwest winds 15 to 20 knots.
Waves 5 to 7 feet.

$$

LSZ266-272000-
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-
1015 AM EDT Wed Oct 27 2021

.This Afternoon...
Weather.............Mostly sunny.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........2 to 4 feet.

.TONIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southeast 15 to 20 knots.
100-ft winds........Southeast 20 to 25 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.

.THURSDAY...
Weather.............Mostly cloudy in the morning.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 5 feet.

.THURSDAY NIGHT...
Weather.............Cloudy with chance of showers.
Sfc winds...........East 10 to 15 knots.
100-ft winds........East 15 to 20 knots.
Sig waves...........2 to 4 feet.


.FORECAST DAYS 3 THROUGH 5...

.FRIDAY...North winds 10 to 15 knots. Waves 6 to 9 feet.
.SATURDAY...North winds 5 to 10 knots. Waves 4 to 6 feet.
.SUNDAY...Chance of showers. Northwest winds 15 to 20 knots.
Waves 5 to 7 feet.

$$

LSZ267-272000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1015 AM EDT Wed Oct 27 2021

.This Afternoon...
Weather.............Partly sunny.
Sfc winds...........East 5 to 10 knots.
100-ft winds........East 10 to 15 knots.
Sig waves...........2 to 4 feet.

.TONIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........2 to 4 feet.

.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........Southeast 10 to 15 knots.
100-ft winds........Southeast 15 to 20 knots.
Sig waves...........2 to 4 feet.

.THURSDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........East 10 to 15 knots.
100-ft winds........East 15 to 20 knots.
Sig waves...........2 to 4 feet.


.FORECAST DAYS 3 THROUGH 5...

.FRIDAY...North winds 10 to 15 knots. Waves 6 to 9 feet.
.SATURDAY...North winds 5 to 10 knots. Waves 4 to 6 feet.
.SUNDAY...Chance of showers. Northwest winds 15 to 20 knots.
Waves 5 to 7 feet.

$$

LSZ261-272000-
MAFOR 2715/
Superior West 11320 11310 11220 12320 11310 12410. Waves 2 to 4
feet this afternoon and tonight. Waves 1 to 3 feet Thursday
morning.

Superior North Central 12310 13320 12420 11410. Waves 2 to 4 feet
this afternoon and tonight. Waves 2 to 4 feet subsiding to 1 to 3
feet Thursday morning.

Superior South Central 12310 13320 11420 12310. Waves 1 to 3
feet.

Superior East 11300 13310 12320 11310 11320. Waves 1 to 3 feet.

$$

 

Occasional waves will only be displayed when values meet or exceed 5 feet.

 

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