fzus63 kmqt 040201
glfls 
expires:202604040800;;792890

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri apr 3 2026

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...

30.3 inch ridging over the lake this evening erodes as a 29.8 inch 
low pressure currently over southern ia moves towards the great 
lakes by early saturday morning. the low moves into far eastern lake 
superior around 29.6 inches late saturday. by sunday, lake superior 
is looking to be between the low at 29.3 inches over northern quebec 
and a 30.3 inch high over the great plains. pressure rises on lake 
superior early next week as the high builds to 30.6 inches over the 
red river valley (of the north) on monday before moving into the 
western great lakes by tuesday.



lsz162-040800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt fri apr 3 2026 /900 pm cdt fri apr 3 2026/

...gale warning in effect from 2 am edt /1 am cdt/ saturday
through saturday afternoon...

.rest of tonight...east gales to 35 knots diminishing to 20 to
30 knots after midnight, then increasing to gales to 35 knots
late. a slight chance of snow by midnight. a slight chance of
sleet. snow after midnight. waves 3 to 6 feet occasionally to
8 feet building to 10 to 14 feet occasionally to 18 feet. 
.saturday...east gales to 35 knots becoming northeast 20 to
30 knots in the afternoon. snow, possibly mixed with sleet
through early afternoon, then snow showers by mid afternoon.
waves subsiding to 6 to 9 feet occasionally to 11 feet. 
.saturday night...north winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight, then diminishing to 15 to 25 knots
late. a chance of snow showers through midnight. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to 20 knots
by mid afternoon. a slight chance of rain and snow showers by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 10 to 20 knots becoming northwest
15 to 25 knots after midnight. a slight chance of rain showers. a
chance of snow showers after midnight. waves building to 1 to
3 feet. 
.monday...northwest winds 20 to 30 knots becoming north 15 to
25 knots by mid afternoon. a chance of snow showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.monday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots becoming south 20 to
30 knots. a chance of snow showers, possibly mixed with rain.
waves building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...south winds 20 to 30 knots becoming west gales to
35 knots. a chance of rain showers, possibly mixed with snow.
waves subsiding to 3 to 6 feet occasionally to 8 feet, then
building to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 040201
glfls 
expires:202604040800;;792891

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri apr 3 2026

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...

30.3 inch ridging over the lake this evening erodes as a 29.8 inch 
low pressure currently over southern ia moves towards the great 
lakes by early saturday morning. the low moves into far eastern lake 
superior around 29.6 inches late saturday. by sunday, lake superior 
is looking to be between the low at 29.3 inches over northern quebec 
and a 30.3 inch high over the great plains. pressure rises on lake 
superior early next week as the high builds to 30.6 inches over the 
red river valley (of the north) on monday before moving into the 
western great lakes by tuesday.



lsz263-040800-
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-
1000 pm edt fri apr 3 2026

...gale warning in effect from 2 am edt saturday through saturday
afternoon...

.rest of tonight...east winds 20 to 30 knots increasing to gales
to 35 knots late. a chance of snow. sleet, possibly mixed with
rain after midnight. waves 3 to 6 feet occasionally to 8 feet
building to 8 to 11 feet occasionally to 14 feet. 
.saturday...east gales to 35 knots diminishing to 20 to 30 knots
in the afternoon, then becoming northeast 15 to 25 knots late.
snow, possibly mixed with sleet through early afternoon. a slight
chance of rain. snow showers, possibly mixed with sleet by mid
afternoon. waves building to 9 to 12 feet occasionally to
15 feet, then subsiding to 7 to 10 feet occasionally to 13 feet. 
.saturday night...north winds 20 to 30 knots backing northwest
after midnight. snow showers likely through midnight. waves
subsiding to 5 to 8 feet occasionally to 10 feet, then building
to 6 to 9 feet occasionally to 11 feet. 
.sunday...northwest winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots becoming northwest 15 to
25 knots after midnight. a slight chance of rain and snow
showers. waves subsiding to calm to 2 feet, then building to 2 to
4 feet. 
.monday...north winds 15 to 25 knots. a chance of snow showers.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday night...north winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to 1 to 3 feet. 
.tuesday...west winds 5 to 15 knots becoming south 20 to
30 knots. a chance of snow showers, possibly mixed with rain.
waves subsiding to calm to 2 feet, then building to 5 to 8 feet
occasionally to 10 feet. 
.wednesday...south winds 20 to 30 knots becoming west gales to
35 knots. a chance of rain showers, possibly mixed with snow.
waves subsiding to 3 to 6 feet occasionally to 8 feet, then
building to 9 to 12 feet occasionally to 15 feet. 

$$