fzus63 kmqt 190046
glfls 
expires:202504190900;;057735

open lake forecast for lake superior
national weather service marquette mi
846 pm edt fri apr 18 2025

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... low pressure of 29.6 inches moves through lower 
michigan through this evening, heading to souteastern ontario by 
saturday morning. high pressure of 30.2 inches over the northern 
plains saturday morning will strengthen to 30.5 inches over the 
upper great lakes sunday morning. this high pressure will give way
to another low pressure lifting into the upper great lakes at 
around 29.6 inches by monday morning. behind the low, weak ridging
of around 30.0 inches moves back over lake superior on tuesday 
into wednesday.


lsz162-190900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
846 pm edt fri apr 18 2025 /746 pm cdt fri apr 18 2025/

.rest of tonight...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.saturday...northwest winds 10 to 20 knots becoming west 5 to
15 knots in the afternoon, then backing southwest late. waves
calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots becoming south
less than 10 knots after midnight, then becoming southeast 5 to
15 knots late. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...east winds 10 to 20 knots backing northeast after
midnight. a chance of rain. waves building to 1 to 3 feet. 
.monday...northeast winds 15 to 25 knots backing north by mid
afternoon. rain likely through early afternoon, then a chance of
rain by mid afternoon. 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. waves subsiding
to calm to 2 feet. 
.tuesday...east winds 10 to 20 knots. a chance of rain showers.
waves building to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots veering west. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 190046
glfls 
expires:202504190900;;057736

open lake forecast for lake superior
national weather service marquette mi
846 pm edt fri apr 18 2025

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... low pressure of 29.6 inches moves through lower 
michigan through this evening, heading to souteastern ontario by 
saturday morning. high pressure of 30.2 inches over the northern 
plains saturday morning will strengthen to 30.5 inches over the 
upper great lakes sunday morning. this high pressure will give way
to another low pressure lifting into the upper great lakes at 
around 29.6 inches by monday morning. behind the low, weak ridging
of around 30.0 inches moves back over lake superior on tuesday 
into wednesday.


lsz263-190900-
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-
846 pm edt fri apr 18 2025

.rest of tonight...north winds 5 to 15 knots. patchy fog through
midnight. scattered rain showers through midnight. waves calm to
2 feet. 
.saturday...northwest winds 5 to 15 knots backing southwest late.
waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots diminishing to
less than 10 knots after midnight, then backing south late. waves
calm to 2 feet. 
.sunday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of rain. waves building to 1 to
3 feet. 
.monday...northeast winds 15 to 25 knots backing north by mid
afternoon. snow likely through early afternoon. rain likely.
waves building to 3 to 6 feet occasionally to 8 feet. 
.monday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to 1 to 3 feet. 
.tuesday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. a chance of rain showers. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$