fzus63 kmqt 022001
glfls 
expires:202604030800;;722108

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu apr 2 2026

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 29.4 inch low in iowa continues northeast, reaching northern lake 
michigan this evening at 29.5 inches before arriving at the 
ontario/quebec line at 29.6 inches by friday morning. as this 
happens, another colorado low moves into kansas at 29.6 inches by 
friday. this low moves into eastern iowa by friday night as 
sprawling 30.7 inch high pressure resides over far northern quebec 
and hudson bay. the low moves through the upper great lakes at 
around 29.6 inches late saturday, with lake superior looking to be 
between the low at 29.3 inches now over northern quebec and a 30.3 
inch high over the great plains by sunday. pressure rises on lake 
superior early next week as the high builds to 30.6 inches over the 
red river valley (of the north) on monday before moving into the 
western great lakes by tuesday.



lsz162-030800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt thu apr 2 2026 /301 pm cdt thu apr 2 2026/

...gale warning in effect until 2 am edt /1 am cdt/ friday...

.late this afternoon...northeast gales to 40 knots. snow. waves
10 to 14 feet occasionally to 18 feet. 
.tonight...northeast gales to 40 knots becoming north 15 to
25 knots late. snow, possibly mixed with sleet through midnight,
then a chance of snow after midnight. waves subsiding to 5 to
8 feet occasionally to 10 feet. 
.friday...north winds 10 to 20 knots veering northeast in the
afternoon, then becoming east 15 to 25 knots late. a slight
chance of rain showers, snow showers and sleet by mid afternoon.
waves subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...east winds 20 to 30 knots increasing to gales to
35 knots late. sleet likely, possibly mixed with snow and rain
through midnight, then snow, possibly mixed with rain and sleet
after midnight. waves building to 8 to 11 feet occasionally to
14 feet. 
.saturday...east gales to 35 knots backing northeast by mid
afternoon. snow, possibly mixed with rain. waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.saturday night...northwest winds 15 to 25 knots. a chance of
snow showers through midnight. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 10 to 20 knots veering northwest after
midnight. a chance of snow showers. waves building to 1 to
3 feet. 
.monday...north winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of snow showers. waves building to 2 to
4 feet, then subsiding to calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots becoming south 20 to
30 knots. a chance of snow showers, possibly mixed with rain.
waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 022001
glfls 
expires:202604030800;;722109

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu apr 2 2026

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 29.4 inch low in iowa continues northeast, reaching northern lake 
michigan this evening at 29.5 inches before arriving at the 
ontario/quebec line at 29.6 inches by friday morning. as this 
happens, another colorado low moves into kansas at 29.6 inches by 
friday. this low moves into eastern iowa by friday night as 
sprawling 30.7 inch high pressure resides over far northern quebec 
and hudson bay. the low moves through the upper great lakes at 
around 29.6 inches late saturday, with lake superior looking to be 
between the low at 29.3 inches now over northern quebec and a 30.3 
inch high over the great plains by sunday. pressure rises on lake 
superior early next week as the high builds to 30.6 inches over the 
red river valley (of the north) on monday before moving into the 
western great lakes by tuesday.



lsz263-030800-
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-
401 pm edt thu apr 2 2026

...gale warning in effect until 2 am edt friday...

.late this afternoon...east gales to 40 knots. snow, possibly
mixed with sleet. waves 9 to 12 feet occasionally to 15 feet
building to 10 to 14 feet occasionally to 18 feet. 
.tonight...northeast gales to 40 knots becoming north 20 to
30 knots late. snow through midnight. a slight chance of sleet. a
chance of snow after midnight. waves subsiding to 7 to 10 feet
occasionally to 13 feet. 
.friday...north winds 15 to 25 knots becoming northeast 10 to
20 knots in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...east winds 15 to 25 knots increasing to gales to
35 knots. a chance of snow and sleet, possibly mixed with rain
through midnight, then snow and sleet, possibly mixed with rain
after midnight. waves building to 8 to 11 feet occasionally to
14 feet. 
.saturday...east gales to 35 knots backing northeast by mid
afternoon. rain, possibly mixed with sleet through early
afternoon. snow. a slight chance of rain showers by mid
afternoon. waves subsiding to 6 to 9 feet occasionally to
11 feet. 
.saturday night...northwest winds 20 to 30 knots. a chance of
snow showers. waves subsiding to 4 to 7 feet occasionally to
9 feet. 
.sunday...northwest winds 15 to 25 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots becoming northwest 15 to
25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...north winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of snow showers. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.tuesday...southwest winds 5 to 15 knots becoming south 20 to
30 knots. waves subsiding to calm to 2 feet, then building to
5 to 8 feet occasionally to 10 feet. 

$$