Expires:202404261600;;391813
FZUS63 KMQT 260753
GLFLS 

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
353 AM EDT Fri Apr 26 2024

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...Broad high pressure of 30.4 inches over Quebec and the 
Lower Great Lakes will build to 30.5 inches as it shifts to New 
England and the Maritime Provinces today. Meanwhile, low pressure of 
29.4 inches over western Kansas will deepen to 29.2 inches today as 
it lifts to eastern Nebraska. This low will continue to track 
northeast, weakening to 29.6 inches by the time it reaches northeast 
Lake Superior on Saturday evening. On Sunday, 30.5 inch high 
pressure will build over northern Ontario as a 29.6 inch low 
pressure lifts northeast across the central Plains. This low will 
continue to track northeast, crossing western Lake Superior during 
Monday. As the low moves over northern Ontario Monday night, a weak 
30.0 inch ridge will shift east across the Mississippi Valley. On 
Tuesday, the ridge will shift toward the Appalachians as the next 
low pressure of 29.7 inches tracks from North Dakota to far northern 
Minnesota. 


LSZ263-261600-
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-
353 AM EDT Fri Apr 26 2024

...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY
MORNING...

.EARLY THIS MORNING...South winds 10 to 20 knots. Waves 2 to
4 feet. 
.TODAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. Waves subsiding to 1 to 3 feet, then
building to 4 to 7 feet occasionally to 9 feet. 
.TONIGHT...Southeast winds 15 to 25 knots backing east after
midnight, then diminishing to 10 to 20 knots late. Rain showers
likely and a slight chance of thunderstorms. Waves subsiding to
3 to 6 feet occasionally to 8 feet, then building to 5 to 8 feet
occasionally to 10 feet. 
.SATURDAY...East winds 10 to 20 knots backing northeast in the
afternoon, then backing northwest late. Rain showers likely
through early afternoon. A slight chance of thunderstorms. A
chance of rain showers by mid afternoon. Waves subsiding to 2 to
4 feet. 
.SATURDAY NIGHT...North winds 15 to 25 knots veering northeast
after midnight. A slight chance of thunderstorms through
midnight. A slight chance of rain showers. Waves building to 3 to
6 feet occasionally to 8 feet. 
.SUNDAY...Northeast winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. Rain showers likely by mid afternoon.
Waves building to 7 to 11 feet occasionally to 14 feet. 
.SUNDAY NIGHT...East gales to 35 knots. Rain showers. Waves
subsiding to 6 to 9 feet occasionally to 11 feet, then building
to 7 to 10 feet occasionally to 13 feet. 
.MONDAY...East winds 20 to 30 knots becoming west 15 to 25 knots.
Rain showers. Waves subsiding to 2 to 4 feet. 
.TUESDAY...Southwest winds 10 to 20 knots veering west. A chance
of rain showers. Waves subsiding to calm to 2 feet, then building
to 2 to 4 feet. 

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