Expires:202405042200;;608075
FZUS63 KMQT 041401
GLFLS 

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 AM EDT Sat May 4 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...Weak ridging of 30.0 inches holds across eastern Lake
Superior this morning before a weak 29.9 inch trough moves into 
the Upper Great Lakes this evening. Ridging at 30.1 inches 
returns across the lake on Sunday. Ridging shifts east early next
week as a broad 29.2 inch low pressure develops on the Northern 
Plains on Monday. A strong pressure gradient over western Lake 
Superior begins to setup Tuesday morning as a deepening 29.0 inch 
low pushes eastward against 30.0 inch ridging over far northern 
Ontario. A secondary 29.4 inch low pressure moves into southern 
Lake Superior Wednesday morning.


LSZ264-042200-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 AM EDT Sat May 4 2024

.REST OF TODAY...West winds less than 10 knots becoming northeast
5 to 15 knots in the afternoon, then backing north late. A chance
of rain showers. Waves calm to 2 feet. 
.TONIGHT...Northwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then diminishing to 5 to 15 knots late.
A chance of rain showers through midnight. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.SUNDAY...West winds 5 to 15 knots backing southwest late. Waves
1 to 3 feet. 
.SUNDAY NIGHT...Southwest winds 5 to 15 knots. Waves subsiding to
calm to 2 feet. 
.MONDAY...South winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. Waves calm to 2 feet. 
.MONDAY NIGHT...East winds 10 to 20 knots veering southeast after
midnight. Waves building to 3 to 5 feet occasionally to 7 feet. 
.TUESDAY...East winds 15 to 25 knots. A chance of rain showers,
then rain showers likely. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.WEDNESDAY...Northeast winds 10 to 20 knots. A chance of rain
showers. Waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 

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