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fzus63 kmqt 260853
glfls 
233 

open lake forecast for lake superior
national weather service marquette mi
353 am est thu nov 26 2020

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 29.7 inch low pressure system centered over 
northern indiana tonight will continue northeast to lake huron 
overnight. a 29.8 inch trough will remain over the upper great 
lakes thursday before weakening to 30.0 inches thursday night. 
30.3 inch high pressure will build into the central plains on 
friday. a 29.7 inch low pressure trough will develop near lake 
winnipeg saturday night before moving north of lake superior 
sunday. 30.5 inch high pressure will shift over the northern 
plains sunday night and build towards the upper great lakes on 
monday while a 29.2 inch low pressure system moves to western 
pennsylvania. this low pressure system will weaken to 29.4 inch and
become occluded over lake huron on tuesday.



lsz162-261700-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
353 am est thu nov 26 2020 /253 am cst thu nov 26 2020/

.early this morning...southwest winds 15 to 25 knots. waves 1 to
3 feet. 
.today...southwest winds 15 to 25 knots becoming west 20 to
30 knots by late morning, then diminishing to 15 to 25 knots by
mid afternoon. waves building to 3 to 6 feet occasionally to
8 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
20 knots by midnight, then increasing to 15 to 25 knots late.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.friday...west winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.friday night...southwest winds 15 to 25 knots. waves building to
4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.saturday...west winds 10 to 20 knots backing southwest in the
afternoon. waves subsiding to 1 to 3 feet. 
.saturday night...southwest winds 10 to 20 knots veering west
after midnight. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots veering north. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.monday...north winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 

$$
fzus63 kmqt 260853
glfls 

lsz263-261700-
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-
353 am est thu nov 26 2020

.early this morning...southwest winds 15 to 25 knots. waves 1 to
3 feet. 
.today...southwest winds 15 to 25 knots increasing to 20 to
30 knots by late morning, then veering west by mid afternoon.
waves building to 4 to 8 feet occasionally to 10 feet. 
.tonight...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.friday...west winds 15 to 25 knots. a slight chance of rain and
snow showers in the morning. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...west winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves building to 4 to 8 feet
occasionally to 10 feet. 
.saturday...west winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to 2 to 4 feet. 
.saturday night...southwest winds 10 to 20 knots veering west
after midnight. waves subsiding to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots becoming north 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet. 
.monday...north winds 15 to 25 knots. waves subsiding to 3 to
5 feet occasionally to 7 feet. 

$$

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