fzus63 kmqt 210806
glfls 
expires:201905211615;;210118

open lake forecast for lake superior
national weather service marquette mi
406 am edt tue may 21 2019

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...surface high pressure of 30.2 inches is currently
overhead, remaining in control of the area into tonight. by early
wednesday morning, a 29.2 inch low near the ne/sd border will 
traverse toward the upper great lakes throughout the day, 
broadening out and weakening as it does so. by overnight wednesday,
this low will have weakened to 29.7 inches and be centered over 
upper michigan. from this point onward, systems will pass quickly 
through the region, with a 30.2 inch ridge visiting thursday night
into early friday, but then quickly be replaced by a 29.4 inch 
low scooting just to the north of lake superior late friday into 
early saturday. the next high pressure of about 30.1 inches 
marches in for the latter half of the weekend, with high pressure
looking to dominate into early next week.


lsz162-211615-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
406 am edt tue may 21 2019 /306 am cdt tue may 21 2019/

...gale watch in effect from late tonight through wednesday
afternoon...

.early this morning...east winds less than 10 knots. waves calm
to 2 feet. 
.today...east winds 5 to 15 knots becoming northeast 10 to
20 knots in the afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tonight...northeast winds 15 to 25 knots veering east after
midnight, then increasing to gales to 35 knots late. a slight
chance of rain showers through midnight, then rain showers after
midnight. waves building to 7 to 10 feet occasionally to 13 feet.
.wednesday...east gales to 35 knots diminishing to 15 to 25 knots
late. a chance of rain. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.wednesday night...east winds 15 to 25 knots becoming west 5 to
15 knots after midnight. rain likely through midnight, then a
slight chance of rain after midnight. waves subsiding to 2 to
4 feet. 
.thursday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.thursday night...east winds less than 10 knots increasing to
5 to 15 knots after midnight. a chance of rain after midnight.
waves calm to 2 feet. 
.friday...east winds 10 to 20 knots becoming southwest 5 to
15 knots. rain likely, then a chance of rain showers. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 210806
glfls 
expires:201905211615;;210119

open lake forecast for lake superior
national weather service marquette mi
406 am edt tue may 21 2019

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...surface high pressure of 30.2 inches is currently
overhead, remaining in control of the area into tonight. by early
wednesday morning, a 29.2 inch low near the ne/sd border will 
traverse toward the upper great lakes throughout the day, 
broadening out and weakening as it does so. by overnight wednesday,
this low will have weakened to 29.7 inches and be centered over 
upper michigan. from this point onward, systems will pass quickly 
through the region, with a 30.2 inch ridge visiting thursday night
into early friday, but then quickly be replaced by a 29.4 inch 
low scooting just to the north of lake superior late friday into 
early saturday. the next high pressure of about 30.1 inches 
marches in for the latter half of the weekend, with high pressure
looking to dominate into early next week.


lsz263-211615-
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-
406 am edt tue may 21 2019

...gale watch in effect from wednesday afternoon through
wednesday evening...

.early this morning...east winds 5 to 15 knots. waves calm to
2 feet. 
.today...east winds 5 to 15 knots increasing to 10 to 20 knots in
the afternoon. waves building to 3 to 5 feet occasionally to
7 feet. 
.tonight...east winds 15 to 25 knots increasing to 20 to 30 knots
late. sprinkles through midnight, then a chance of rain showers
after midnight. waves building to 3 to 6 feet occasionally to
8 feet. 
.wednesday...east winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. rain through early afternoon, then a
slight chance of rain and thunderstorms by mid afternoon. waves
building to 8 to 11 feet occasionally to 14 feet. 
.wednesday night...east winds 15 to 25 knots becoming southwest
5 to 15 knots after midnight. rain likely and a slight chance of
thunderstorms through midnight, then a chance of rain after
midnight. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.thursday night...northwest winds 5 to 15 knots veering east
after midnight. a chance of rain after midnight. waves calm to
2 feet. 
.friday...east winds 10 to 20 knots veering southwest. rain
likely, then a chance of rain showers. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.saturday...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet. 

$$