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fzus63 kmqt 271454
glfls 
169 

open lake forecast for lake superior
national weather service marquette mi
954 am est sat feb 27 2021

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 trough over lake superior this morning
should weaken to 30.0 inches by this evening. a 29.6 inch low
looks to develop over the central plains this afternoon, and it
should move northeast across lake michigan on sunday. this low 
lifts northeast into quebec by sunday night as it strengthens to 
29.2 inches. ridging of 30.4 inches builds over western lake 
superior on monday ahead of a 29.5 inch trough entering northern 
saskatchewan. this low is expected to track north of lake superior
on tuesday night dropping a 29.7 inch trough over the lake that 
gradually weakens to 29.9 inches on wednesday.

lsz162-272300-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
954 am est sat feb 27 2021 /854 am cst sat feb 27 2021/

.rest of today...west winds 10 to 20 knots backing east. flurries
late in the morning. waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...east winds 10 to 20 knots backing northeast by
midnight, then increasing to 15 to 25 knots late. freezing spray.
flurries in the evening. a chance of snow after midnight. waves
2 to 4 feet. 
.sunday...northeast winds 10 to 20 knots becoming northwest 15 to
25 knots by late morning, then backing west by mid afternoon. a
chance of snow. waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 1 to 3 feet. 
.sunday night...west winds 15 to 25 knots becoming northwest
gales to 35 knots after midnight. heavy freezing spray. a slight
chance of snow showers after midnight. waves building to 3 to
6 feet occasionally to 8 feet. 
.monday...northwest winds 20 to 30 knots becoming west 10 to
20 knots in the afternoon. heavy freezing spray in the morning.
waves subsiding to calm to 2 feet. 
.monday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. freezing spray after midnight.
waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...southwest gales to 35 knots becoming west 15 to
25 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$
fzus63 kmqt 271454
glfls 

lsz263-272300-
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-
954 am est sat feb 27 2021

...gale watch in effect from late sunday night through monday
morning...

.rest of today...west winds to 30 knots with a few gale force
gusts to 35 knots possible becoming northeast 10 to 20 knots.
flurries. freezing spray in the afternoon. waves 2 to 4 feet
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.tonight...northeast winds 10 to 20 knots. freezing spray.
flurries in the evening. a chance of snow after midnight. waves
2 to 4 feet. 
.sunday...northeast winds 10 to 20 knots becoming north 15 to
25 knots by late morning, then becoming west 20 to 30 knots by
mid afternoon. freezing spray in the morning. snow likely in the
morning, then a chance of snow in the afternoon. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.sunday night...west winds 20 to 30 knots becoming northwest
gales to 40 knots after midnight. heavy freezing spray. a slight
chance of snow showers. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.monday...northwest gales to 35 knots becoming west 15 to
25 knots in the afternoon. heavy freezing spray. waves building
to 6 to 9 feet occasionally to 11 feet, then subsiding to 1 to
3 feet. 
.monday night...west winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. freezing spray after midnight.
waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...southwest gales to 35 knots becoming west 15 to
25 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to 2 to 4 feet. 
.wednesday...west winds 5 to 15 knots backing southwest. waves
subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

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