fzus63 kmqt 010707
glfls 
expires:202505011515;;757587

open lake forecast for lake superior
national weather service marquette mi
307 am edt thu may 1 2025

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...29.7 inch low pressure over the mid mississippi valley 
will head northeast and deepen to 29.5 inches near houghton lake 
michigan by this evening. the low will track into southwestern 
quebec friday morning while 30.0 inch ridging gradually builds 
back over lake superior. this ridge builds to 30.2 inches as it 
slowly shifts across the great lakes basin this weekend. on 
monday, the ridge weakens to 30.1 inches over lake superior as low
pressure at 29.7 inches organizes over the dakotas.


lsz162-011515-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
307 am edt thu may 1 2025 /207 am cdt thu may 1 2025/

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a slight chance of rain showers by mid
afternoon. waves building to 2 to 4 feet. 
.tonight...northeast winds 10 to 20 knots backing north late. a
chance of rain showers through midnight, then rain showers,
possibly mixed with snow after midnight. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday...north winds 10 to 20 knots becoming northeast 5 to
15 knots in the afternoon, then veering south late. snow showers
likely, possibly mixed with rain showers through early afternoon.
waves subsiding to 1 to 3 feet. 
.friday night...southwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 10 to 20 knots veering north
after midnight. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots becoming west 10 to 20 knots.
waves calm to 2 feet. 

$$

fzus63 kmqt 010707
glfls 
expires:202505011515;;757588

open lake forecast for lake superior
national weather service marquette mi
307 am edt thu may 1 2025

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...29.7 inch low pressure over the mid mississippi valley 
will head northeast and deepen to 29.5 inches near houghton lake 
michigan by this evening. the low will track into southwestern 
quebec friday morning while 30.0 inch ridging gradually builds 
back over lake superior. this ridge builds to 30.2 inches as it 
slowly shifts across the great lakes basin this weekend. on 
monday, the ridge weakens to 30.1 inches over lake superior as low
pressure at 29.7 inches organizes over the dakotas.


lsz263-011515-
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-
307 am edt thu may 1 2025

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...east winds 5 to 15 knots backing northeast in the
afternoon, then increasing to 10 to 20 knots late. a slight
chance of rain showers by mid afternoon. waves building to 2 to
4 feet. 
.tonight...northeast winds 10 to 20 knots. a chance of rain
showers through midnight, then rain showers, possibly mixed with
snow after midnight. waves building to 4 to 7 feet occasionally
to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday...north winds 10 to 20 knots diminishing to 5 to 15 knots
late. rain showers likely through early afternoon. a chance of
snow showers. waves subsiding to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots backing south
after midnight. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots veering east. waves calm
to 2 feet. 
.monday...south winds 5 to 15 knots veering southwest. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$