fzus63 kdtx 021941
glflh 
expires:202504030345;;633123

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm edt wed apr 2 2025

for waters beyond five nautical miles off shore on lake huron

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...low pressure, 29.20 inches, tracks into lake superior
late tonight. this low drags a cold front across the great lakes
bringing the threat for widespread easterly gale force gusts and
strong to severe thunderstorms today. high pressure building in
on thursday maintains gusty westerly flow through the day before
winds subside through friday.


lhz361-362-030345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
341 pm edt wed apr 2 2025

...gale warning in effect until 10 pm edt this evening...

.tonight...east winds to 30 knots with gusts to 40 knot gales
becoming southeast 20 to 25 knots with gusts to 35 knot gales
late in the evening...then decreasing to 15 to 20 knots after
midnight veering to the south early in the morning. rain and a
chance of thunderstorms in the evening. waves 12 to 16 feet
subsiding to 8 to 12 feet after midnight. waves occasionally
around 20 feet. 
.thursday...southwest winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots in the late morning and
afternoon. waves 6 to 9 feet. waves occasionally around 12 feet. 
.thursday night...west winds 15 to 20 knots decreasing to 5 to
10 knots. waves 5 to 7 feet subsiding to 2 to 4 feet after
midnight. waves occasionally around 10 feet. 
.friday...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.friday night...light and variable winds becoming east 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.saturday...northeast winds 10 to 15 knots backing to the
northwest late in the evening. a chance of rain. waves 1 to
3 feet building to 2 to 4 feet late in the evening. 
.sunday...northwest winds 10 to 15 knots increasing to 15 to
20 knots until early morning. waves 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots. a chance of. waves 4 to
6 feet. waves occasionally around 8 feet. 


$$

fzus63 kdtx 021941
glflh 
expires:202504030345;;633124

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm edt wed apr 2 2025

for waters beyond five nautical miles off shore on lake huron

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...low pressure, 29.20 inches, tracks into lake superior
late tonight. this low drags a cold front across the great lakes
bringing the threat for widespread easterly gale force gusts and
strong to severe thunderstorms today. high pressure building in
on thursday maintains gusty westerly flow through the day before
winds subside through friday.


lhz363-462>464-030345-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
341 pm edt wed apr 2 2025

...gale warning in effect until 10 pm edt this evening...

.tonight...southeast winds 20 to 25 knots with gusts to 35 knot
gales becoming south 15 to 20 knots with gusts to around 30 knots
after midnight. rain and a chance of thunderstorms. waves 8 to
12 feet. waves occasionally around 15 feet. 
.thursday...southwest winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots in the late morning and
early afternoon...then becoming west 15 to 20 knots late in the
afternoon. waves 6 to 9 feet. waves occasionally around 12 feet. 
.thursday night...west winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet after midnight. 
.friday...northwest winds 5 to 10 knots veering to the north in
the late morning and afternoon. waves 1 to 3 feet. 
.friday night...northeast winds 5 to 10 knots. a chance of rain
after midnight. waves 1 to 3 feet. 
.saturday...northeast winds 10 to 15 knots. a chance of rain.
waves 2 to 4 feet. 
.sunday...north winds 10 to 15 knots. waves 3 to 5 feet. 
.monday...northwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of snow. waves 4 to 6 feet. waves occasionally
around 8 feet. 


$$

fzus63 kmkx 021945
glflm 
expires:202504030315;;633292

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm cdt wed apr 2 2025

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a gale warning remains in effect for the entire open waters
until 0z, lingering longer in the far north. the surface low of 
29.2 inches will progress toward lake superior this evening, 
moving into ontario by early thursday morning. we cannot rule
out a few stronger storms across the far southern portions of
the lake late this afternoon into the evening. winds will turn 
southwesterly & gradually decrease in the wake of the departing 
surface low tonight.

30.1 inch high pressure will build into the northern great plains
thursday afternoon, allowing winds to turn more westerly across 
the open waters. there is increasing potential for a period of
gales in the far north early thursday lasting into the
afternoon. thus we have issued another gale warning for the
northern parts of the lake from 9-19z. winds will become light 
& variable thursday night as the high crosses lake michigan. 
winds will shift out of the northeast on friday as low pressure 
forms in the southern great plains. winds will increase during 
the day on saturday as the low moves into the ohio river valley.
gales aren't forecast at this time, though trends will be 
monitored. periods of rain will accompany the approaching low 
friday afternoon through saturday, with a few thunderstorms 
possible over far southern lake michigan.


lmz261-362-364-563-030315-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
245 pm cdt wed apr 2 2025

sturgeon bay wi to point betsie mi north...

...gale warning in effect until 9 pm cdt this evening...
...gale warning in effect from late tonight through thursday
afternoon...

.tonight...southeast gales to 45 kt becoming south to 30 kt late
this evening, then becoming southwest after midnight increasing
to gales to 35 kt late. chance of rain showers and slight chance
of thunderstorms this evening. waves 7 to 10 ft occasionally to
13 ft subsiding to 5 to 8 ft occasionally to 10 ft. 
.thursday...southwest gales to 40 kt becoming west to 30 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.thursday night...west winds 15 to 25 kt diminishing to 10 to
15 kt late in the evening, then becoming northwest 5 to 10 kt
after midnight becoming north late. waves 4 to 6 ft occasionally
to 8 ft subsiding to 1 to 2 ft. 
.friday...northeast winds 5 to 10 kt. waves 1 ft or less. 
.friday night...northeast winds 10 to 15 kt becoming east. waves
1 to 2 ft. 
.saturday...northeast winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 2 ft. 
.saturday night...north winds 10 to 20 kt becoming northwest.
waves 1 to 3 ft. 
.sunday...northwest winds 10 to 20 kt. waves 1 to 3 ft. 
.monday...north winds 15 to 25 kt. chance of snow showers. waves
3 to 5 ft.  

$$

fzus63 kmkx 021945
glflm 
expires:202504030315;;633293

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm cdt wed apr 2 2025

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a gale warning remains in effect for the entire open waters
until 0z, lingering longer in the far north. the surface low of 
29.2 inches will progress toward lake superior this evening, 
moving into ontario by early thursday morning. we cannot rule
out a few stronger storms across the far southern portions of
the lake late this afternoon into the evening. winds will turn 
southwesterly & gradually decrease in the wake of the departing 
surface low tonight.

30.1 inch high pressure will build into the northern great plains
thursday afternoon, allowing winds to turn more westerly across 
the open waters. there is increasing potential for a period of
gales in the far north early thursday lasting into the
afternoon. thus we have issued another gale warning for the
northern parts of the lake from 9-19z. winds will become light 
& variable thursday night as the high crosses lake michigan. 
winds will shift out of the northeast on friday as low pressure 
forms in the southern great plains. winds will increase during 
the day on saturday as the low moves into the ohio river valley.
gales aren't forecast at this time, though trends will be 
monitored. periods of rain will accompany the approaching low 
friday afternoon through saturday, with a few thunderstorms 
possible over far southern lake michigan.


lmz366-565-567-868-030315-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
245 pm cdt wed apr 2 2025

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...gale warning in effect until 7 pm cdt this evening...

.tonight...south winds to 30 kt becoming southwest. chance of
rain showers and slight chance of thunderstorms this evening.
waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.thursday...southwest winds to 30 kt becoming west 15 to 25 kt.
waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.thursday night...west winds 10 to 15 kt veering to north 5 to
10 kt. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.friday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.friday night...northeast winds 10 to 15 kt. chance of rain
showers overnight. waves 1 to 3 ft. 
.saturday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.saturday night...north winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...northwest winds 10 to 20 kt becoming north. waves 2 to
4 ft. 
.monday...northwest winds 15 to 25 kt becoming north. chance of
snow showers. waves 4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 021945
glflm 
expires:202504030315;;633294

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm cdt wed apr 2 2025

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

a gale warning remains in effect for the entire open waters
until 0z, lingering longer in the far north. the surface low of 
29.2 inches will progress toward lake superior this evening, 
moving into ontario by early thursday morning. we cannot rule
out a few stronger storms across the far southern portions of
the lake late this afternoon into the evening. winds will turn 
southwesterly & gradually decrease in the wake of the departing 
surface low tonight.

30.1 inch high pressure will build into the northern great plains
thursday afternoon, allowing winds to turn more westerly across 
the open waters. there is increasing potential for a period of
gales in the far north early thursday lasting into the
afternoon. thus we have issued another gale warning for the
northern parts of the lake from 9-19z. winds will become light 
& variable thursday night as the high crosses lake michigan. 
winds will shift out of the northeast on friday as low pressure 
forms in the southern great plains. winds will increase during 
the day on saturday as the low moves into the ohio river valley.
gales aren't forecast at this time, though trends will be 
monitored. periods of rain will accompany the approaching low 
friday afternoon through saturday, with a few thunderstorms 
possible over far southern lake michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-030315-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
245 pm cdt wed apr 2 2025

sheboygan wi to pentwater mi south...

...gale warning in effect until 7 pm cdt this evening...

.tonight...south winds to 30 kt becoming southwest. slight chance
of rain showers and thunderstorms this evening. waves 7 to 10 ft
occasionally to 13 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.thursday...southwest winds to 30 kt diminishing to 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.thursday night...west winds 10 to 15 kt veering to northeast.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.friday...northeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...northeast winds 10 to 20 kt. rain showers. waves
2 to 4 ft. 
.saturday...north winds 10 to 20 kt. chance of rain showers.
waves 3 to 5 ft. 
.saturday night...north winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.monday...northwest winds 15 to 25 kt becoming north. chance of
snow showers. waves 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmqt 021959
glfls 
expires:202504030400;;633763

open lake forecast for lake superior
national weather service marquette mi
359 pm edt wed apr 2 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...30.5 inch high pressure remains anchored over the 
saint lawrence valley and new england tonight while a 29.2 inch 
low lifts into the great lakes from northeastern iowa tonight. 
this low spins across lake superior tonight at 29.3 inches, then 
lifts to near james bay thursday afternoon at 29.4 inches. 30.3 
inch ridging shifts over lake superior friday morning, then 
weakens to 30.0 inches saturday. weak troughing at 30.0 inches 
settles through the upper great lakes saturday night and
sunday. ridging at 30.1 inches moves back over the region monday. 


lsz162-030400-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
359 pm edt wed apr 2 2025 /259 pm cdt wed apr 2 2025/

...gale warning in effect until 11 pm edt /10 pm cdt/ this
evening...

.late this afternoon...east gales to 40 knots. snow, possibly
mixed with rain. waves 9 to 12 feet occasionally to 15 feet
building to 10 to 14 feet occasionally to 18 feet. 
.tonight...east gales to 40 knots becoming west 20 to 30 knots
after midnight. rain and snow likely through midnight, then a
chance of snow, possibly mixed with rain after midnight. waves
building to 11 to 15 feet occasionally to 19 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 
.thursday...west winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering northwest late. waves
subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing east by mid afternoon.
waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots becoming north
10 to 20 knots after midnight. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots backing west by mid
afternoon. waves calm to 2 feet. 
.saturday night...west winds 10 to 20 knots veering northwest
after midnight. waves calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots becoming north 15 to
25 knots. waves building to 2 to 4 feet. 
.monday...north winds 10 to 20 knots. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 021959
glfls 
expires:202504030400;;633764

open lake forecast for lake superior
national weather service marquette mi
359 pm edt wed apr 2 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...30.5 inch high pressure remains anchored over the 
saint lawrence valley and new england tonight while a 29.2 inch 
low lifts into the great lakes from northeastern iowa tonight. 
this low spins across lake superior tonight at 29.3 inches, then 
lifts to near james bay thursday afternoon at 29.4 inches. 30.3 
inch ridging shifts over lake superior friday morning, then 
weakens to 30.0 inches saturday. weak troughing at 30.0 inches 
settles through the upper great lakes saturday night and
sunday. ridging at 30.1 inches moves back over the region monday. 


lsz263-030400-
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-
359 pm edt wed apr 2 2025

...gale warning in effect until 11 pm edt this evening...
...gale warning in effect from 2 am edt thursday through thursday
afternoon...

.late this afternoon...east gales to 45 knots. snow, possibly
mixed with rain. waves 12 to 17 feet occasionally to 21 feet
building to 15 to 20 feet occasionally to 25 feet. 
.tonight...east gales to 45 knots becoming southwest 20 to
30 knots after midnight, then becoming west gales to 35 knots
late. snow likely through midnight. a chance of rain. a chance of
snow after midnight. waves subsiding to 7 to 10 feet occasionally
to 13 feet. 
.thursday...west gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. a slight chance of snow showers through early
afternoon. waves subsiding to 4 to 7 feet occasionally to 9 feet.
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering northwest late. waves
subsiding to calm to 2 feet. 
.friday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming west 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.saturday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves 1 to 3 feet. 
.sunday...northwest winds 10 to 20 knots becoming north 15 to
25 knots. a chance of snow showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.monday...north winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 021959
glfls 
expires:202504030400;;633765

open lake forecast for lake superior
national weather service marquette mi
359 pm edt wed apr 2 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...30.5 inch high pressure remains anchored over the 
saint lawrence valley and new england tonight while a 29.2 inch 
low lifts into the great lakes from northeastern iowa tonight. 
this low spins across lake superior tonight at 29.3 inches, then 
lifts to near james bay thursday afternoon at 29.4 inches. 30.3 
inch ridging shifts over lake superior friday morning, then 
weakens to 30.0 inches saturday. weak troughing at 30.0 inches 
settles through the upper great lakes saturday night and
sunday. ridging at 30.1 inches moves back over the region monday. 


lsz264-030400-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
359 pm edt wed apr 2 2025

...gale warning in effect until 4 pm edt this afternoon...
...storm warning in effect until 11 pm edt this evening...
...gale warning in effect from 2 am edt thursday through thursday
afternoon...

.late this afternoon...east storm force winds to 55 knots. snow,
possibly mixed with rain. waves 15 to 20 feet occasionally to
25 feet. 
.tonight...east gales to 45 knots becoming south 20 to 30 knots
after midnight, then becoming west gales to 35 knots late. snow
likely through midnight. a chance of rain. a chance of snow after
midnight. waves subsiding to 7 to 10 feet occasionally to
13 feet, then building to 8 to 11 feet occasionally to 14 feet. 
.thursday...west gales to 35 knots diminishing to 20 to 30 knots
late. a chance of snow showers, possibly mixed with rain through
early afternoon. waves subsiding to 5 to 8 feet occasionally to
10 feet. 
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering northwest late. waves
subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet. 
.saturday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.sunday...northwest winds 10 to 20 knots becoming north 15 to
25 knots. waves building to 4 to 7 feet occasionally to 9 feet. 
.monday...north winds 15 to 25 knots diminishing to 10 to
20 knots. freezing spray. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 021959
glfls 
expires:202504030400;;633766

open lake forecast for lake superior
national weather service marquette mi
359 pm edt wed apr 2 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...30.5 inch high pressure remains anchored over the 
saint lawrence valley and new england tonight while a 29.2 inch 
low lifts into the great lakes from northeastern iowa tonight. 
this low spins across lake superior tonight at 29.3 inches, then 
lifts to near james bay thursday afternoon at 29.4 inches. 30.3 
inch ridging shifts over lake superior friday morning, then 
weakens to 30.0 inches saturday. weak troughing at 30.0 inches 
settles through the upper great lakes saturday night and
sunday. ridging at 30.1 inches moves back over the region monday. 


lsz265-030400-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
359 pm edt wed apr 2 2025

...gale warning in effect until 11 pm edt this evening...
...gale warning in effect from late tonight through thursday
afternoon...

.late this afternoon...southeast gales to 45 knots. rain,
possibly mixed with snow. waves 12 to 17 feet occasionally to
21 feet building to 15 to 20 feet occasionally to 25 feet. 
.tonight...southeast gales to 40 knots becoming south 15 to
25 knots after midnight, then becoming southwest gales to
35 knots late. a chance of rain through midnight. a slight chance
of snow after midnight. waves subsiding to 4 to 8 feet
occasionally to 10 feet. 
.thursday...west gales to 35 knots diminishing to 15 to 25 knots
late. a slight chance of rain and snow showers through early
afternoon. waves subsiding to 2 to 4 feet. 
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing east by mid afternoon.
waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...northwest winds 10 to 20 knots. waves calm to 2 feet.
.saturday night...west winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...northwest winds 15 to 25 knots veering north. a chance
of snow showers. waves building to 3 to 5 feet occasionally to
7 feet. 
.monday...north winds 15 to 25 knots. waves subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 021959
glfls 
expires:202504030400;;633767

open lake forecast for lake superior
national weather service marquette mi
359 pm edt wed apr 2 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...30.5 inch high pressure remains anchored over the 
saint lawrence valley and new england tonight while a 29.2 inch 
low lifts into the great lakes from northeastern iowa tonight. 
this low spins across lake superior tonight at 29.3 inches, then 
lifts to near james bay thursday afternoon at 29.4 inches. 30.3 
inch ridging shifts over lake superior friday morning, then 
weakens to 30.0 inches saturday. weak troughing at 30.0 inches 
settles through the upper great lakes saturday night and
sunday. ridging at 30.1 inches moves back over the region monday. 


lsz266-030400-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
359 pm edt wed apr 2 2025

...gale warning in effect until 4 pm edt this afternoon...
...storm warning in effect until 11 pm edt this evening...
...gale warning in effect from late tonight through thursday
afternoon...

.late this afternoon...southeast storm force winds to 55 knots.
rain, possibly mixed with snow, freezing rain likely and sleet.
waves 15 to 20 feet occasionally to 25 feet. 
.tonight...southeast storm force winds to 55 knots becoming south
gales to 35 knots after midnight, then veering southwest late.
snow likely through midnight. a chance of rain. waves subsiding
to 6 to 9 feet occasionally to 11 feet. 
.thursday...west gales to 40 knots diminishing to 20 to 30 knots
late. a slight chance of rain and snow showers through early
afternoon. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 7 to 10 feet occasionally to 13 feet. 
.thursday night...west winds 10 to 20 knots veering northwest
after midnight, then diminishing to 5 to 15 knots late. waves
subsiding to 1 to 3 feet. 
.friday...west winds 5 to 15 knots backing east by mid afternoon.
waves subsiding to calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...northwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots. waves building
to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots veering north. waves
building to 3 to 6 feet occasionally to 8 feet. 
.monday...north winds 15 to 25 knots. waves subsiding to 3 to
5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 021959
glfls 
expires:202504030400;;633768

open lake forecast for lake superior
national weather service marquette mi
359 pm edt wed apr 2 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...30.5 inch high pressure remains anchored over the 
saint lawrence valley and new england tonight while a 29.2 inch 
low lifts into the great lakes from northeastern iowa tonight. 
this low spins across lake superior tonight at 29.3 inches, then 
lifts to near james bay thursday afternoon at 29.4 inches. 30.3 
inch ridging shifts over lake superior friday morning, then 
weakens to 30.0 inches saturday. weak troughing at 30.0 inches 
settles through the upper great lakes saturday night and
sunday. ridging at 30.1 inches moves back over the region monday. 


lsz267-030400-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
359 pm edt wed apr 2 2025

...gale warning in effect until 4 pm edt this afternoon...
...storm warning in effect until 11 pm edt this evening...
...gale warning in effect from thursday morning through thursday
afternoon...

.late this afternoon...southeast storm force winds to 55 knots.
freezing rain, sleet likely, possibly mixed with rain and snow.
waves 10 to 14 feet occasionally to 18 feet building to 11 to
15 feet occasionally to 19 feet. 
.tonight...southeast storm force winds to 55 knots diminishing to
gales to 40 knots after midnight, then becoming southwest 20 to
30 knots late. a chance of rain. waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.thursday...west gales to 40 knots. a slight chance of rain and
snow showers through early afternoon. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 8 to 11 feet
occasionally to 14 feet. 
.thursday night...west winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.friday...west winds 5 to 15 knots backing east by mid afternoon.
waves subsiding to calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.saturday...north winds 10 to 20 knots backing northwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots. waves building
to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots veering north. waves
building to 3 to 6 feet occasionally to 8 feet. 
.monday...north winds 15 to 25 knots. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$