fzus63 kmqt 292001
glfls 
expires:202608300800;;569257

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat aug 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...

a 29.6 inch low develops over the central and northern plains 
tonight before lifting north into the canadian prairies early next 
week. the new 29.4 inch low over the canadian prairies on monday is 
projected to bring 29.8 inch troughing over lake superior by late 
monday. weak high pressure ridging of 29.9 inches looks to make a 
quick return on tuesday before being replaced by weak 29.8 inch 
troughing tuesday night and wednesday morning. 




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

.late this afternoon...east winds 5 to 15 knots. a slight chance
of showers. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots backing northeast after
midnight. patchy fog after midnight. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots increasing to 20 to
30 knots. patchy fog. waves building to 2 to 4 feet. 
.sunday night...northeast winds 20 to 30 knots becoming east
15 to 25 knots after midnight. a slight chance of showers through
midnight. a slight chance of thunderstorms. showers likely after
midnight. waves subsiding to 1 to 3 feet. 
.monday...east winds 10 to 20 knots becoming north 5 to 15 knots
by mid afternoon. a chance of showers and a slight chance of
thunderstorms through early afternoon. waves subsiding to calm to
2 feet. 
.monday night...west winds 5 to 15 knots backing southwest after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots veering northeast.
waves calm to 2 feet. 
.thursday...east winds 15 to 25 knots becoming northeast 10 to
20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202608300800;;569258

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat aug 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...

a 29.6 inch low develops over the central and northern plains 
tonight before lifting north into the canadian prairies early next 
week. the new 29.4 inch low over the canadian prairies on monday is 
projected to bring 29.8 inch troughing over lake superior by late 
monday. weak high pressure ridging of 29.9 inches looks to make a 
quick return on tuesday before being replaced by weak 29.8 inch 
troughing tuesday night and wednesday morning. 




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 sat aug 29 2026

.late this afternoon...southeast winds 5 to 15 knots. a slight
chance of showers. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots backing east late.
patchy fog after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming northeast 15 to
25 knots in the afternoon. patchy fog. waves building to 2 to
4 feet. 
.sunday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of showers. a slight chance of
thunderstorms after midnight. waves subsiding to 1 to 3 feet. 
.monday...east winds 10 to 20 knots becoming northwest 5 to
15 knots by mid afternoon. a chance of showers and a slight
chance of thunderstorms. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.monday night...west winds 5 to 15 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots veering east. waves
calm to 2 feet. 

$$