fzus63 kdtx 030708
glflh 
expires:202605031515;;933319

open lake forecast for lake huron
national weather service detroit/pontiac mi
308 am edt sun may 3 2026

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...a warm front moves through today which will support
southwest flow and increasing winds speeds through the morning.
southwest flow holds through tomorrow before a cold front veers
wind direction northwest by tuesday.


lhz361-031515-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
308 am edt sun may 3 2026

.today...south winds 5 to 10 knots increasing to 10 to 15 knots
late in the afternoon. a chance of showers. waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. a chance of showers in the evening.
waves 1 to 3 feet. 
.monday...south winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. a chance of showers in the
afternoon. waves 1 to 3 feet building to 3 to 5 feet in the late
morning and afternoon. 
.monday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots in the late evening and overnight. a chance of
showers in the evening. waves 3 to 5 feet subsiding to 2 to
4 feet after midnight. 
.tuesday...west winds 10 to 15 knots becoming northwest 5 to
10 knots late in the evening. waves 2 to 4 feet. 
.wednesday...west winds 5 to 10 knots increasing to 10 to
15 knots until early evening...then becoming northwest 5 to
10 knots by midnight. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 10 knots becoming west 10 to
15 knots . waves 2 feet or less building to 3 to 5 feet . 


$$

fzus63 kdtx 030708
glflh 
expires:202605031515;;933320

open lake forecast for lake huron
national weather service detroit/pontiac mi
308 am edt sun may 3 2026

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...a warm front moves through today which will support
southwest flow and increasing winds speeds through the morning.
southwest flow holds through tomorrow before a cold front veers
wind direction northwest by tuesday.


lhz362-363-031515-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
308 am edt sun may 3 2026

.today...south winds 10 to 15 knots. a chance of showers in the
afternoon. waves 1 to 3 feet building to 3 to 5 feet in the late
morning and afternoon. 
.tonight...southwest winds 15 to 20 knots decreasing to 5 to
10 knots. waves 3 to 5 feet. 
.monday...southwest winds 10 to 15 knots becoming south 15 to
20 knots in the late morning and afternoon. waves 1 to 3 feet
building to 4 to 6 feet in the late morning and afternoon. waves
occasionally around 8 feet. 
.monday night...south winds 15 to 20 knots becoming west 10 to
15 knots in the late evening and overnight. a chance of showers.
waves 4 to 6 feet. waves occasionally around 8 feet. 
.tuesday...north winds 5 to 10 knots. a chance of showers. waves
2 to 4 feet. 
.wednesday...north winds 5 to 10 knots early in the morning
backing to the northwest...then veering to the east early in the
evening becoming light and variable. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots backing to the west by
midnight. waves 1 to 3 feet building to 3 to 5 feet . 


$$

fzus63 kdtx 030708
glflh 
expires:202605031515;;933321

open lake forecast for lake huron
national weather service detroit/pontiac mi
308 am edt sun may 3 2026

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...a warm front moves through today which will support
southwest flow and increasing winds speeds through the morning.
southwest flow holds through tomorrow before a cold front veers
wind direction northwest by tuesday.


lhz462>464-031515-
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-
308 am edt sun may 3 2026

.today...south winds 10 to 15 knots. waves 1 to 3 feet building
to 2 to 4 feet in the afternoon. 
.tonight...southwest winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. waves 3 to 5 feet. 
.monday...southwest winds 10 to 15 knots becoming south 15 to
20 knots early in the afternoon. waves 1 to 3 feet building to
2 to 4 feet in the late morning and afternoon. 
.monday night...south winds 15 to 20 knots becoming southwest
10 to 15 knots in the late evening and overnight. a chance of
showers. waves 3 to 5 feet. 
.tuesday...north winds 5 to 10 knots. a chance of showers. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...north winds 5 to 10 knots becoming light and
variable. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 030759
glflm 
expires:202605031515;;935150

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
259 am cdt sun may 3 2026

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...

southerly winds will increase this morning, as low pressure 
around 29.7 inches approaches the lake. the low pressure system 
will drag a cold front southeast over the region later this 
morning into late this afternoon. southwest to south winds may 
approach gale force at times over the southern half but with the 
cooler lake conditions winds should largely stay below gale force.
winds will become westerly for a brief period behind the front
later tonight, before returning to southwesterly and becoming 
breezy again on monday ahead of another stronger low around 29.2 
inches and another cold front. light and more variable winds
should be expected to return to the region through at least the
middle of the week given weak high pressure over the region.


lmz261-362-364-366-563-565-567-868-031515-
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 point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
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-
259 am cdt sun may 3 2026

sheboygan wi to pentwater mi north...

.today...southwest winds 15 to 25 kt increasing to 30 kt. slight
chance of rain showers this morning, then slight chance of rain
showers and thunderstorms this afternoon. waves 3 to 5 ft
building to 5 to 8 ft occasionally to 10 ft. 
.tonight...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. 
.monday...southwest winds to 30 kt. chance of rain showers in the
afternoon. waves 4 to 6 ft occasionally to 8 ft building to 5 to
8 ft occasionally to 10 ft. 
.monday night...west winds 15 to 25 kt becoming northwest 10 to
15 kt overnight. chance of rain showers. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.tuesday...northwest winds 10 to 20 kt becoming west. waves 1 to
3 ft. 
.tuesday night...northwest winds 10 to 15 kt becoming north 5 to
10 kt. waves 1 to 2 ft. 
.wednesday...northwest winds 10 to 15 kt backing to southwest
10 to 20 kt. waves 1 to 2 ft. 
.thursday...northwest winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 030759
glflm 
expires:202605031515;;935151

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
259 am cdt sun may 3 2026

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...

southerly winds will increase this morning, as low pressure 
around 29.7 inches approaches the lake. the low pressure system 
will drag a cold front southeast over the region later this 
morning into late this afternoon. southwest to south winds may 
approach gale force at times over the southern half but with the 
cooler lake conditions winds should largely stay below gale force.
winds will become westerly for a brief period behind the front
later tonight, before returning to southwesterly and becoming 
breezy again on monday ahead of another stronger low around 29.2 
inches and another cold front. light and more variable winds
should be expected to return to the region through at least the
middle of the week given weak high pressure over the region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-031515-
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-
259 am cdt sun may 3 2026

sheboygan wi to pentwater mi south...

.today...southwest winds to 30 kt becoming south. chance of rain
showers this morning, then chance of sprinkles this afternoon.
waves 5 to 8 ft occasionally to 10 ft. 
.tonight...southwest winds to 30 kt diminishing to 10 to 15 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.monday...southwest winds 10 to 20 kt becoming south to 30 kt.
waves 2 to 4 ft building to 5 to 8 ft occasionally to 10 ft. 
.monday night...southwest winds 15 to 25 kt veering to northwest
10 to 15 kt overnight. chance of rain showers. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.tuesday...north winds 10 to 15 kt. chance of rain showers. waves
1 to 3 ft. 
.tuesday night...northwest winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 3 ft. 
.wednesday...north winds 10 to 15 kt. waves 1 to 2 ft. 
.thursday...west winds 10 to 15 kt becoming southwest. waves 1 to
2 ft.  

$$

fzus63 kmqt 030801
glfls 
expires:202605032000;;935235

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 3 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 29.6 inch trough moves over lake superior this morning as a low 
over central minnesota lifts into northern ontario. a deepening 29.3 
inch low digs over the canadian prairies tonight and then deepens to 
29.0 inches over northern ontario on monday; bringing 29.2 inch 
troughing over northern lake superior monday morning. the low lifts 
into james bay by monday evening as 30.1 inch ridging builds just to 
the east of the canadian rockies. as the high pressure ridging 
shifts to the canadian prairies tuesday and wednesday, the now 29.2 
inch low continues lifting into far northern quebec. we can thus 
expect ridging to slowly build back over lake superior to around 
29.9 to 30.0 inches by the middle of next week as the ridging 
spreads into the rest of the central conus. the ridging over lake 
superior does look to weaken to around 29.8 to 29.9 inches by 
thursday night and friday as the upper great lakes become sandwiched 
between a low just off of the new england coast and troughing on the 
lee of the rockies.



lsz162-032000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sun may 3 2026 /301 am cdt sun may 3 2026/

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 10 to 20 knots backing southwest late. waves
calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...west winds 20 to 30 knots diminishing to 15 to 25 knots
late. a chance of rain showers. waves subsiding to 2 to 4 feet. 
.monday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.tuesday...west winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.wednesday...southwest winds 5 to 15 knots veering northwest.
waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 

$$

fzus63 kmqt 030801
glfls 
expires:202605032000;;935236

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 3 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 29.6 inch trough moves over lake superior this morning as a low 
over central minnesota lifts into northern ontario. a deepening 29.3 
inch low digs over the canadian prairies tonight and then deepens to 
29.0 inches over northern ontario on monday; bringing 29.2 inch 
troughing over northern lake superior monday morning. the low lifts 
into james bay by monday evening as 30.1 inch ridging builds just to 
the east of the canadian rockies. as the high pressure ridging 
shifts to the canadian prairies tuesday and wednesday, the now 29.2 
inch low continues lifting into far northern quebec. we can thus 
expect ridging to slowly build back over lake superior to around 
29.9 to 30.0 inches by the middle of next week as the ridging 
spreads into the rest of the central conus. the ridging over lake 
superior does look to weaken to around 29.8 to 29.9 inches by 
thursday night and friday as the upper great lakes become sandwiched 
between a low just off of the new england coast and troughing on the 
lee of the rockies.



lsz263-032000-
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 am edt sun may 3 2026

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...west winds 5 to 15 knots increasing to 10 to 20 knots in
the afternoon. waves building to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.monday...southwest winds 20 to 30 knots veering west in the
afternoon, then diminishing to 15 to 25 knots late. a chance of
rain showers. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 2 to 4 feet. 
.tuesday...west winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 030801
glfls 
expires:202605032000;;935237

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 3 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 29.6 inch trough moves over lake superior this morning as a low 
over central minnesota lifts into northern ontario. a deepening 29.3 
inch low digs over the canadian prairies tonight and then deepens to 
29.0 inches over northern ontario on monday; bringing 29.2 inch 
troughing over northern lake superior monday morning. the low lifts 
into james bay by monday evening as 30.1 inch ridging builds just to 
the east of the canadian rockies. as the high pressure ridging 
shifts to the canadian prairies tuesday and wednesday, the now 29.2 
inch low continues lifting into far northern quebec. we can thus 
expect ridging to slowly build back over lake superior to around 
29.9 to 30.0 inches by the middle of next week as the ridging 
spreads into the rest of the central conus. the ridging over lake 
superior does look to weaken to around 29.8 to 29.9 inches by 
thursday night and friday as the upper great lakes become sandwiched 
between a low just off of the new england coast and troughing on the 
lee of the rockies.



lsz264-032000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt sun may 3 2026

.early this morning...south winds 5 to 15 knots. a slight chance
of rain showers. waves calm to 2 feet. 
.today...west winds 5 to 15 knots increasing to 10 to 20 knots
late. waves building to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots becoming south 15 to
25 knots after midnight, then becoming southwest 20 to 30 knots
late. a chance of rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.monday...southwest winds 20 to 30 knots veering west in the
afternoon. a chance of rain showers through early 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...west winds 15 to 25 knots veering northwest after
midnight. waves subsiding to 2 to 4 feet. 
.tuesday...west winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 030801
glfls 
expires:202605032000;;935238

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 3 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 29.6 inch trough moves over lake superior this morning as a low 
over central minnesota lifts into northern ontario. a deepening 29.3 
inch low digs over the canadian prairies tonight and then deepens to 
29.0 inches over northern ontario on monday; bringing 29.2 inch 
troughing over northern lake superior monday morning. the low lifts 
into james bay by monday evening as 30.1 inch ridging builds just to 
the east of the canadian rockies. as the high pressure ridging 
shifts to the canadian prairies tuesday and wednesday, the now 29.2 
inch low continues lifting into far northern quebec. we can thus 
expect ridging to slowly build back over lake superior to around 
29.9 to 30.0 inches by the middle of next week as the ridging 
spreads into the rest of the central conus. the ridging over lake 
superior does look to weaken to around 29.8 to 29.9 inches by 
thursday night and friday as the upper great lakes become sandwiched 
between a low just off of the new england coast and troughing on the 
lee of the rockies.



lsz265-032000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt sun may 3 2026

.early this morning...south winds 10 to 20 knots. a chance of
rain showers. waves calm to 2 feet. 
.today...southwest winds 10 to 20 knots becoming west 15 to
25 knots in the afternoon. a slight chance of rain showers
through early afternoon. waves calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots becoming south 15 to
25 knots after midnight, then becoming southwest 20 to 30 knots
late. a slight chance of rain showers after midnight. waves
building to 2 to 4 feet. 
.monday...southwest winds to 30 knots with a few gale force gusts
to 35 knots possible veering west in the afternoon. a chance of
rain showers. waves building to 3 to 5 feet occasionally to
7 feet. 
.monday night...west winds 20 to 30 knots. waves subsiding to
1 to 3 feet. 
.tuesday...west winds 15 to 25 knots. waves subsiding to calm to
2 feet. 
.tuesday night...west winds 10 to 20 knots. waves calm to 2 feet.
.wednesday...west winds 10 to 20 knots becoming southwest 5 to
15 knots. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 

$$

fzus63 kmqt 030801
glfls 
expires:202605032000;;935239

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 3 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 29.6 inch trough moves over lake superior this morning as a low 
over central minnesota lifts into northern ontario. a deepening 29.3 
inch low digs over the canadian prairies tonight and then deepens to 
29.0 inches over northern ontario on monday; bringing 29.2 inch 
troughing over northern lake superior monday morning. the low lifts 
into james bay by monday evening as 30.1 inch ridging builds just to 
the east of the canadian rockies. as the high pressure ridging 
shifts to the canadian prairies tuesday and wednesday, the now 29.2 
inch low continues lifting into far northern quebec. we can thus 
expect ridging to slowly build back over lake superior to around 
29.9 to 30.0 inches by the middle of next week as the ridging 
spreads into the rest of the central conus. the ridging over lake 
superior does look to weaken to around 29.8 to 29.9 inches by 
thursday night and friday as the upper great lakes become sandwiched 
between a low just off of the new england coast and troughing on the 
lee of the rockies.



lsz266-032000-
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-
401 am edt sun may 3 2026

.early this morning...south winds 10 to 20 knots. a slight chance
of rain showers. waves calm to 2 feet. 
.today...south winds 10 to 20 knots veering west in the
afternoon. a slight chance of rain showers. waves calm to 2 feet.
.tonight...southwest winds 10 to 20 knots backing south after
midnight, then increasing to 20 to 30 knots late. a slight chance
of rain showers after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...southwest winds to 30 knots with a few gale force gusts
to 35 knots possible becoming west 20 to 30 knots in the
afternoon. a chance of rain showers. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday night...west winds 20 to 30 knots. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.tuesday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.tuesday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 
.thursday...west winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 030801
glfls 
expires:202605032000;;935240

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 3 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 29.6 inch trough moves over lake superior this morning as a low 
over central minnesota lifts into northern ontario. a deepening 29.3 
inch low digs over the canadian prairies tonight and then deepens to 
29.0 inches over northern ontario on monday; bringing 29.2 inch 
troughing over northern lake superior monday morning. the low lifts 
into james bay by monday evening as 30.1 inch ridging builds just to 
the east of the canadian rockies. as the high pressure ridging 
shifts to the canadian prairies tuesday and wednesday, the now 29.2 
inch low continues lifting into far northern quebec. we can thus 
expect ridging to slowly build back over lake superior to around 
29.9 to 30.0 inches by the middle of next week as the ridging 
spreads into the rest of the central conus. the ridging over lake 
superior does look to weaken to around 29.8 to 29.9 inches by 
thursday night and friday as the upper great lakes become sandwiched 
between a low just off of the new england coast and troughing on the 
lee of the rockies.



lsz267-032000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt sun may 3 2026

.early this morning...south winds 10 to 20 knots. a slight chance
of rain showers. waves calm to 2 feet. 
.today...south winds 10 to 20 knots veering west late. a chance
of rain showers. waves calm to 2 feet. 
.tonight...west winds 10 to 20 knots becoming south 5 to 15 knots
after midnight, then increasing to 15 to 25 knots late. a slight
chance of rain showers after midnight. waves building to 3 to
5 feet occasionally to 7 feet. 
.monday...south winds 20 to 30 knots veering southwest in the
afternoon, then becoming west 15 to 25 knots late. rain showers
likely. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday night...west winds 15 to 25 knots. a slight chance of
rain showers through midnight. waves 3 to 6 feet occasionally to
8 feet. 
.tuesday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.tuesday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 

$$