fzus63 kmqt 020743
glfls 
expires:202304021545;;089532

open lake forecast for lake superior
national weather service marquette mi
343 am edt sun apr 2 2023

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 30.1 inch high pressure ridge over the upper great
lakes will move east to the east coast by this evening. a 29.5 
inch low pressure over southern saskatchewan will move east and be
south of lake winnipeg by this evening. this low will move across
lake superior tonight and into quebec by monday afternoon. a 
colorado low of 29.1 inches will organize monday night as a 30.5 
inch high builds southeast over northern ontario. the low will 
then track northeast, reaching the upper mississippi valley 
wednesday morning while the high builds to 30.6 inches as it 
shifts to southern quebec. the low is expected to track across 
lake superior at 29.3 inches on wednesday night and early 
thursday morning. in its wake, 30.5 inch high pressure will build 
over the plains on thursday. 


lsz162-021545-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
343 am edt sun apr 2 2023 /243 am cdt sun apr 2 2023/

.early this morning...south winds 10 to 20 knots. waves 1 to
3 feet. 
.today...south winds 10 to 20 knots backing southeast in the
afternoon, then increasing to 15 to 25 knots late. snow showers
through early afternoon. a slight chance of rain showers. a
chance of snow showers by mid afternoon. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.tonight...west winds 15 to 25 knots. a slight chance of rain
showers, possibly mixed with snow through midnight. waves
building to 3 to 5 feet occasionally to 7 feet. 
.monday...west winds 10 to 20 knots backing east in the
afternoon, then increasing to 15 to 25 knots late. a slight
chance of snow showers. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.monday night...east winds 20 to 30 knots. a slight chance of
snow showers. waves building to 5 to 8 feet occasionally to
10 feet. 
.tuesday...northeast gales to 40 knots increasing to storm force
winds to 55 knots by mid afternoon. freezing spray through early
afternoon. a chance of snow showers through early afternoon, then
snow, possibly mixed with sleet by mid afternoon. waves building
to 15 to 20 feet occasionally to 25 feet. 
.tuesday night...east storm force winds to 60 knots backing
northeast after midnight. snow and sleet, possibly mixed with
rain. waves subsiding to 15 to 20 feet occasionally to 25 feet. 
.wednesday...northeast storm force winds to 55 knots becoming
west gales to 35 knots. rain and snow showers, possibly mixed
with sleet, then a chance of snow showers. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.thursday...west gales to 35 knots diminishing to 15 to 25 knots.
waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 020743
glfls 
expires:202304021545;;089533

open lake forecast for lake superior
national weather service marquette mi
343 am edt sun apr 2 2023

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 30.1 inch high pressure ridge over the upper great
lakes will move east to the east coast by this evening. a 29.5 
inch low pressure over southern saskatchewan will move east and be
south of lake winnipeg by this evening. this low will move across
lake superior tonight and into quebec by monday afternoon. a 
colorado low of 29.1 inches will organize monday night as a 30.5 
inch high builds southeast over northern ontario. the low will 
then track northeast, reaching the upper mississippi valley 
wednesday morning while the high builds to 30.6 inches as it 
shifts to southern quebec. the low is expected to track across 
lake superior at 29.3 inches on wednesday night and early 
thursday morning. in its wake, 30.5 inch high pressure will build 
over the plains on thursday. 


lsz263-021545-
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-
343 am edt sun apr 2 2023

.early this morning...south winds 10 to 20 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.today...south winds 15 to 25 knots. rain showers through early
afternoon. snow showers. a chance of rain showers by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.tonight...southwest winds 20 to 30 knots veering west after
midnight. a chance of rain showers, possibly mixed with snow.
waves building to 4 to 7 feet occasionally to 9 feet. 
.monday...north winds 15 to 25 knots becoming northeast 10 to
20 knots in the afternoon, then increasing to 15 to 25 knots
late. a slight chance of snow showers through early afternoon.
waves subsiding to 2 to 4 feet. 
.monday night...northeast winds 15 to 25 knots becoming east
20 to 30 knots after midnight. freezing spray after midnight. a
slight chance of snow showers after midnight. waves building to
5 to 8 feet occasionally to 10 feet. 
.tuesday...east gales to 45 knots. freezing spray through early
afternoon. snow, possibly mixed with sleet by mid afternoon.
waves building to 12 to 17 feet occasionally to 21 feet. 
.tuesday night...east storm force winds to 60 knots. snow and
sleet, possibly mixed with rain. waves 12 to 17 feet occasionally
to 21 feet. 
.wednesday...east storm force winds to 60 knots becoming west 
gales to 35 knots. rain and snow, possibly mixed with sleet, then 
a chance of snow showers. waves subsiding to 5 to 8 feet 
occasionally to 10 feet. 
.thursday...west gales to 35 knots diminishing to 20 to 30 knots.
waves subsiding to 2 to 4 feet. 

$$