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fzus63 kmqt 250758
glfls 
835 

open lake forecast for lake superior
national weather service marquette mi
358 am edt tue apr 25 2017

for waters beyond five nautical miles of shore on lake superior

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...a 29.5 inch low pressure trough over the upper
mississippi river valley this morning will remain stationary
through tonight as 30.5 inch high pressure remains over hudson
bay. a 29.4 inch low will organize along this trough over 
central wisconsin wednesday morning...then lift northward across 
upper michigan thursday morning while deepening to 29.3 inches.
this low will head north into james bay by friday morning and
further deepen to 29.2 inches. a 30.0 inch ridge will build over 
the upper great lakes on friday. the ridge will build to 30.3 
inches over the upper great lakes on saturday. 

lsz162-251600-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
358 am edt tue apr 25 2017 /258 am cdt tue apr 25 2017/

...gale warning in effect from this evening through wednesday
evening...

.early this morning...northeast winds 10 to 20 knots. a slight
chance of rain. waves 3 to 5 feet occasionally to 7 feet. 
.today...northeast winds 5 to 15 knots increasing to 20 to
30 knots by mid afternoon. a slight chance of rain. waves
subsiding to 1 to 3 feet...then building to 3 to 5 feet
occasionally to 7 feet. 
.tonight...northeast gales to 40 knots. rain. a slight chance of
freezing rain after midnight. waves building to 8 to 11 feet
occasionally to 14 feet. 
.wednesday...northeast gales to 40 knots. a slight chance of
sleet through early afternoon. rain...possibly mixed with
freezing rain. waves building to 10 to 14 feet occasionally to
18 feet...then subsiding to 9 to 12 feet occasionally to 15 feet.
.wednesday night...northeast gales to 35 knots becoming north
15 to 25 knots after midnight. freezing rain...possibly mixed
with rain and snow through midnight...then snow likely...possibly
mixed with freezing rain after midnight. waves subsiding to 3 to 
6 feet occasionally to 8 feet. 
.thursday...north winds 15 to 25 knots backing northwest by mid
afternoon. a chance of rain and snow. waves subsiding to 1 to
3 feet. 
.thursday night...west winds 15 to 25 knots. a chance of rain
showers through midnight. a chance of snow showers. waves
subsiding to calm to 2 feet...then building to 1 to 3 feet. 
.friday...west winds 10 to 20 knots veering north. waves
subsiding to calm to 2 feet. 
.saturday...northeast winds 10 to 20 knots. a chance of rain.
waves building to 2 to 4 feet. 

$$
fzus63 kmqt 250758
glfls 

lsz263-251600-
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-
358 am edt tue apr 25 2017

...gale warning in effect from this evening through late
wednesday night...

.early this morning...southeast winds 15 to 25 knots. a slight
chance of rain. waves 3 to 6 feet occasionally to 8 feet. 
.today...east winds 10 to 20 knots becoming northeast 20 to
30 knots by mid afternoon. waves subsiding to 2 to 4 feet...then
building to 3 to 5 feet occasionally to 7 feet. 
.tonight...northeast gales to 40 knots. a slight chance of
freezing rain through midnight. rain likely. freezing rain after
midnight. waves building to 8 to 11 feet occasionally to 14 feet.
.wednesday...northeast gales to 40 knots. rain...possibly mixed
with freezing rain through early afternoon. a chance of sleet. a
chance of rain and freezing rain by mid afternoon. waves building
to 10 to 14 feet occasionally to 18 feet...then subsiding to 9 to
12 feet occasionally to 15 feet. 
.wednesday night...northeast gales to 35 knots becoming north
20 to 30 knots after midnight. freezing rain...possibly mixed
with rain...snow and sleet. waves subsiding to 4 to 7 feet 
occasionally to 9 feet. 
.thursday...north winds 15 to 25 knots becoming northwest 10 to
20 knots by mid afternoon. rain likely through early afternoon. a
chance of snow. a chance of rain by mid afternoon. waves
subsiding to 1 to 3 feet. 
.thursday night...west winds 10 to 20 knots. a chance of rain
showers through midnight. a chance of snow showers. waves
building to 2 to 4 feet...then subsiding to 1 to 3 feet. 
.friday...west winds 10 to 20 knots becoming north 5 to 15 knots.
waves subsiding to calm to 2 feet. 
.saturday...north winds 5 to 15 knots becoming northeast 10 to
20 knots. waves building to 2 to 4 feet. 

$$

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