fzus63 kmqt 292001
glfls 
expires:202604300800;;744511

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed apr 29 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...

weak ridging persists between 30.0 and 30.1 inches through early 
saturday as a 30.3 inch high slowly shifts east from the canadian 
prairies to northwest ontario and hudson bay. weak troughing of 29.8 
inches moves over the lake saturday night and strengthens to 29.5 
inches through monday as the parent low pressure deepens to 29.4 
inches over northern ontario and james bay.



lsz162-300800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed apr 29 2026 /301 pm cdt wed apr 29 2026/

.late this afternoon...southwest winds 5 to 15 knots. a chance of
snow and rain showers. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering north late. a slight
chance of rain showers. a slight chance of snow showers after
midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering south in the
afternoon, then veering southwest late. a slight chance of snow
showers. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots veering south by mid
afternoon. waves calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 
.monday...west winds 10 to 20 knots. a chance of rain showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202604300800;;744512

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed apr 29 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...

weak ridging persists between 30.0 and 30.1 inches through early 
saturday as a 30.3 inch high slowly shifts east from the canadian 
prairies to northwest ontario and hudson bay. weak troughing of 29.8 
inches moves over the lake saturday night and strengthens to 29.5 
inches through monday as the parent low pressure deepens to 29.4 
inches over northern ontario and james bay.



lsz263-300800-
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-
401 pm edt wed apr 29 2026

.late this afternoon...west winds less than 10 knots. a slight
chance of rain and snow showers. waves calm to 2 feet. 
.tonight...northwest winds less than 10 knots becoming north 5 to
15 knots after midnight. a slight chance of rain and snow
showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots becoming west less than
10 knots late. a slight chance of snow showers. waves calm to
2 feet. 
.thursday night...west winds 5 to 15 knots veering north after
midnight. a slight chance of rain and snow showers through
midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing west. a chance of
rain showers. waves building to 1 to 3 feet. 

$$