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fzus63 kmqt 230744
glfls 
expires:202110231545;;124603

open lake forecast for lake superior
national weather service marquette mi
344 am edt sat oct 23 2021

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 29.7 inch low pressure over james bay this morning 
will slowly dissipate today while a 30.3 inch high pressure over 
northern manitoba will extend a 30.1 inch ridge toward northern 
minnesota. the ridge will then extend southeast toward the upper 
great lakes tonight. on sunday, the 30.3 high pressure over 
manitoba will shift over far northern ontario while 29.4 inch low
pressure organizes over the central plains. as this low weakens 
to 29.7 inches while tracking to the upper ohio valley monday, the
high pressure will remain anchored over northern ontario. the 
high will then shift to james bay tuesday, enabling a 30.2 inch 
ridge across the upper great lakes. the ridge weakens to 29.9 
inches on wednesday.

&&


lsz162-231545-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
344 am edt sat oct 23 2021 /244 am cdt sat oct 23 2021/

.early this morning...north winds 10 to 20 knots. waves calm to
2 feet. 
.today...north winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon, then backing northwest late. waves calm to
2 feet. 
.tonight...north winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...northeast winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.sunday night...east winds 20 to 30 knots backing northeast after
midnight. waves building to 3 to 6 feet occasionally to 8 feet. 
.monday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday night...east winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.tuesday...east winds 10 to 20 knots. waves building to 2 to
4 feet. 
.wednesday...east winds 10 to 20 knots. a chance of showers, then
showers likely. waves subsiding to calm to 2 feet. 

$$
fzus63 kmqt 230744
glfls 
expires:202110231545;;124604

open lake forecast for lake superior
national weather service marquette mi
344 am edt sat oct 23 2021

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 29.7 inch low pressure over james bay this morning 
will slowly dissipate today while a 30.3 inch high pressure over 
northern manitoba will extend a 30.1 inch ridge toward northern 
minnesota. the ridge will then extend southeast toward the upper 
great lakes tonight. on sunday, the 30.3 high pressure over 
manitoba will shift over far northern ontario while 29.4 inch low
pressure organizes over the central plains. as this low weakens 
to 29.7 inches while tracking to the upper ohio valley monday, the
high pressure will remain anchored over northern ontario. the 
high will then shift to james bay tuesday, enabling a 30.2 inch 
ridge across the upper great lakes. the ridge weakens to 29.9 
inches on wednesday.

&&


lsz263-231545-
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-
344 am edt sat oct 23 2021

.early this morning...north winds 10 to 20 knots. a slight chance
of waterspouts. isolated rain showers. waves calm to 2 feet
building to 1 to 3 feet. 
.today...north winds 10 to 20 knots backing northwest in the
afternoon, then diminishing to 5 to 15 knots late. a slight
chance of waterspouts. isolated rain showers. waves subsiding to
calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots becoming north 10 to
20 knots after midnight. a slight chance of waterspouts. isolated
rain showers. waves building to 1 to 3 feet. 
.sunday...northeast winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.sunday night...east winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.monday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday night...northeast winds 10 to 20 knots veering east after
midnight. waves subsiding to 2 to 4 feet. 
.tuesday...east winds 10 to 20 knots veering southeast. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.wednesday...east winds 10 to 20 knots. a chance of showers.
waves 1 to 3 feet. 

$$

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