fzus63 kmqt 270803
glfls 
996 

open lake forecast for lake superior
national weather service marquette mi
403 am edt tue oct 27 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...ridging of 30.3 inches remains draped across the upper
great lakes this morning. it will move eastward into the lower
great lakes and weaken to 30.2 inches this afternoon as a 29.5 
inch low moving towards hudson bay extends extends a 29.7 inch 
trough across ontario. this trough will cross lake superior 
tuesday night and wednesday. by thursday, 30.2 inch high pressure
will be building into northern ontario. it will then drift
southeastward across lake superior on friday. saturday a 29.3 inch
low is expected to move through northern ontario, dragging a 29.6
inch trough across lake superior saturday night. 

lsz162-271615-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
403 am edt tue oct 27 2020 /303 am cdt tue oct 27 2020/

...gale warning in effect from 11 am edt /10 am cdt/ this morning
through late tonight...

.early this morning...southwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.today...southwest gales to 40 knots. waves building to 8 to
11 feet occasionally to 14 feet. 
.tonight...southwest gales to 40 knots. a slight chance of snow
showers through midnight. a slight chance of rain showers. waves
building to 10 to 14 feet occasionally to 18 feet, then subsiding
to 6 to 9 feet occasionally to 11 feet. 
.wednesday...southwest winds 15 to 25 knots veering west in the
afternoon. a slight chance of rain showers. waves subsiding to
2 to 4 feet. 
.wednesday night...northwest winds 10 to 20 knots veering north
after midnight. a slight chance of rain and snow showers after
midnight. waves subsiding to calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots becoming south 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet. 
.saturday...southwest gales to 35 knots veering northwest. waves
building to 5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 270803
glfls 

lsz263-271615-
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-
403 am edt tue oct 27 2020

...gale warning in effect from 11 am edt this morning through
wednesday morning...

.early this morning...southwest winds 20 to 30 knots. a slight
chance of snow showers. waves 3 to 5 feet occasionally to 7 feet
building to 4 to 7 feet occasionally to 9 feet. 
.today...southwest gales to 40 knots. waves building to 10 to
14 feet occasionally to 18 feet. 
.tonight...southwest gales to 40 knots veering west late. a
slight chance of rain and snow showers. waves subsiding to 9 to
12 feet occasionally to 15 feet. 
.wednesday...west winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. a chance of rain showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.wednesday night...north winds 10 to 20 knots. a slight chance of
rain and snow showers after midnight. waves subsiding to calm to
2 feet. 
.thursday...north winds 10 to 20 knots. waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots backing northwest
after midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots becoming south winds 20 
to 30 knots. waves building to 3 to 6 feet occasionally to 8 
feet.
.saturday...southwest gales to 35 knots becoming northwest gales
to 40 knots. waves building to 6 to 10 feet occasionally to
13 feet. 

$$