Expires:202009281615;;483608
FZUS63 KMQT 280803
GLFLS 

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
403 AM EDT Mon Sep 28 2020

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 trough will swing through Lake Superior 
this morning. A weak ridge of 29.8 inches then briefly moves over
western Lake Superior by Monday evening while a 29.5 inch low 
moves north through Lake Huron and the St. Marys River. This low 
will deepen to 29.1 inches south of James Bay by Tuesday morning. 
Tuesday evening, a 29.6 inch trough will drop south from Canada. A
29.4 inch low pressure system develops within this trough, north 
of Lake Superior on Wednesday before lifting away to the 
northeast.


LSZ264-281615-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
403 AM EDT Mon Sep 28 2020

.EARLY THIS MORNING...Northwest winds 5 to 15 knots. A slight
chance of showers. Waves 2 to 4 feet subsiding to 1 to 3 feet. 
.TODAY...Northwest winds 5 to 15 knots. A slight chance of
showers. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.TONIGHT...Northwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A chance of showers. Waves building to
2 to 4 feet. 
.TUESDAY...Northwest winds 10 to 20 knots backing west in the
afternoon, then increasing to 15 to 25 knots late. Showers
likely. Waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.TUESDAY NIGHT...West winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. Showers likely. Waves subsiding to
1 to 3 feet. 
.WEDNESDAY...Northwest winds 10 to 20 knots. A chance of showers.
Waves 1 to 3 feet. 
.WEDNESDAY NIGHT...North winds 10 to 20 knots increasing to 15 to
25 knots after midnight. A chance of showers. Waves building to
3 to 5 feet occasionally to 7 feet. 
.THURSDAY...North winds 15 to 25 knots. A chance of rain showers.
Waves building to 3 to 6 feet occasionally to 8 feet. 
.FRIDAY...North winds 5 to 15 knots. Waves subsiding to calm to
2 feet. 

$$