fzus63 kmqt 181359
glfls 
807 

open lake forecast for lake superior
national weather service marquette mi
959 am edt wed sep 18 2019

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...high pressure of 30.3 inches will continue to build 
to 30.4 inches as it drifts southeastward to northern new england 
by later today. meanwhile, a 29.4 inch low over western north 
dakota will lift northeastward, reaching the hudson bay tonight. an 
associated 29.8 inch low pressure trough crossing northern 
minnesota today will dissipate as it moves over lake superior on 
thursday. 30.1 inch ridging will return to the upper great lakes 
thursday night and friday while a low pressure trough of 29.7 
inches moves out over the northern plains. this trough will 
organize into a 29.2 inch low as it travels northeast across 
manitoba on saturday, dragging a 29.6 inch trough across lake 
superior late saturday and through the day sunday.

lsz162-182200-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
959 am edt wed sep 18 2019 /859 am cdt wed sep 18 2019/

.rest of today...south winds 10 to 20 knots. patchy fog by late
morning. a slight chance of showers and thunderstorms. waves calm
to 2 feet building to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots diminishing to 5 to
15 knots late. a slight chance of showers and thunderstorms
through midnight. patchy fog after midnight. waves building to
2 to 4 feet, then subsiding to 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots veering west late.
waves subsiding to calm to 2 feet. 
.thursday night...northeast winds less than 10 knots. waves calm
to 2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering south after
midnight. a chance of showers and thunderstorms. waves calm to
2 feet. 
.saturday...south winds 15 to 25 knots veering southwest. showers
likely. a chance of thunderstorms. a chance of showers. waves
building to 2 to 4 feet. 
.sunday...southwest winds 10 to 20 knots becoming west 5 to
15 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 181359
glfls 

lsz263-182200-
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-
959 am edt wed sep 18 2019

.rest of today...south winds 10 to 20 knots. a slight chance of
showers. a slight chance of thunderstorms by mid afternoon. waves
calm to 2 feet building to 1 to 3 feet. 
.tonight...south winds 15 to 25 knots veering southwest after
midnight, then diminishing to 10 to 20 knots late. a chance of
showers and a slight chance of thunderstorms through midnight.
patchy fog after midnight. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.thursday...southwest winds 5 to 15 knots diminishing to less
than 10 knots late. patchy fog. waves subsiding to calm to
2 feet. 
.thursday night...east winds less than 10 knots backing northeast
after midnight. patchy fog through midnight. waves calm to
2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots veering south after
midnight. a chance of showers. waves calm to 2 feet. 
.saturday...south winds 10 to 20 knots becoming southwest 20 to
30 knots. a chance of showers and thunderstorms. waves building
to 3 to 5 feet occasionally to 7 feet. 
.sunday...southwest winds 15 to 25 knots becoming west 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$