Marine Weather Forecast from Environment Canada

Winds


Issued 10:30 AM EDT 29 May 2017

Today Tonight and Tuesday. Strong wind warning in effect. Wind south 10 knots increasing to southwest 15 this evening and to west 20 early Tuesday morning.

Extended Forecast


Issued 03:00 AM EDT 29 May 2017
Wednesday Wind northwest 15 knots.
Thursday Wind west 15 knots backing to south 15.
Friday Wind north 15 knots.

Waves


Issued 10:30 AM EDT 29 May 2017

Today Tonight and Tuesday. Waves one half metre or less building to one near midnight and to 2 Tuesday morning.

Weather & Visibility


Issued 10:30 AM EDT 29 May 2017

Today Tonight and Tuesday.A few showers and fog patches. Risk of thunderstorms late this morning and this afternoon.

 

Lake Superior Mafor Forecast and Weather Conditions
From NOAA National Weather Service Weather Forecast Office



  
413  
FZUS63 KMQT 291407  
GLFLS  
 
OPEN LAKE FORECAST FOR LAKE SUPERIOR  
NATIONAL WEATHER SERVICE MARQUETTE MI  
1007 AM EDT MON MAY 29 2017  
 
FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR  
 
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 LOW PRESSURE OF 29.5 INCHES OVER NORTHERN ONTARIO  
WILL REMAIN NEARLY STATIONARY THROUGH WEDNESDAY MORNING. BY  
WEDNESDAY EVENING...THE LOW WILL WEAKEN TO 29.7 INCHES...WHILE IT  
EXITS INTO QUEBEC. A NARROW SURFACE RIDGE AROUND 29.8 INCHES WILL  
THEN MOVE ACROSS THE GREAT LAKES THURSDAY AND FRIDAY.  
 
LSZ162-292215-  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
1007 AM EDT MON MAY 29 2017 /907 AM CDT MON MAY 29 2017/  
   
REST OF TODAY
 
WEST WINDS 10 TO 20 KNOTS. SCATTERED RAIN  
SHOWERS. WAVES 2 TO 4 FEET.    
TONIGHT
 
WEST WINDS 10 TO 20 KNOTS. SCATTERED RAIN SHOWERS.  
WAVES 2 TO 4 FEET.    
TUESDAY
 
WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN SHOWERS.  
WAVES SUBSIDING TO 1 TO 3 FEET.    
TUESDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF  
RAIN SHOWERS THROUGH MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.   
WEDNESDAY
 
WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO  
3 FEET.    
WEDNESDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.   
THURSDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.    
FRIDAY
 
EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS.  
WAVES CALM TO 2 FEET.  
 

 
 
LSZ263-292215-  
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-  
1007 AM EDT MON MAY 29 2017  
   
REST OF TODAY
 
WEST WINDS 10 TO 20 KNOTS. PATCHY FOG. SCATTERED  
RAIN SHOWERS. WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
TONIGHT
 
WEST WINDS 10 TO 20 KNOTS. PATCHY FOG. SCATTERED RAIN  
SHOWERS. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
TUESDAY
 
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS  
BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO  
2 TO 4 FEET.    
TUESDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES  
SUBSIDING TO 1 TO 3 FEET.    
WEDNESDAY AND WEDNESDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS. WAVES  
1 TO 3 FEET.    
THURSDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO  
2 FEET.    
FRIDAY
 
NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST. WAVES CALM  
TO 2 FEET.  
 

 
 
LSZ264-292215-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
1007 AM EDT MON MAY 29 2017  
   
REST OF TODAY
 
SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO  
10 TO 20 KNOTS BY MID AFTERNOON. PATCHY FOG. SCATTERED RAIN  
SHOWERS. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.    
TONIGHT
 
WEST WINDS 10 TO 20 KNOTS. PATCHY FOG. SCATTERED RAIN  
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
TUESDAY
 
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS  
BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO  
2 TO 4 FEET.    
TUESDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES  
SUBSIDING TO 1 TO 3 FEET.    
WEDNESDAY
 
WEST WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.    
WEDNESDAY NIGHT
 
WEST 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.    
THURSDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.    
FRIDAY
 
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST. WAVES CALM  
TO 2 FEET.  
 

 
 
LSZ265-292215-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
1007 AM EDT MON MAY 29 2017  
   
REST OF TODAY
 
SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG.  
SCATTERED RAIN SHOWERS. WAVES CALM TO 2 FEET.    
TONIGHT
 
WEST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 25 KNOTS  
AFTER MIDNIGHT. NUMEROUS RAIN SHOWERS THROUGH MIDNIGHT...THEN  
SCATTERED RAIN SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO  
4 FEET.    
TUESDAY
 
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES  
SUBSIDING TO 1 TO 3 FEET.    
TUESDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO  
25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES  
1 TO 3 FEET.    
WEDNESDAY
 
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.    
WEDNESDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO  
2 FEET.    
THURSDAY
 
WEST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN SHOWERS.  
WAVES CALM TO 2 FEET.    
FRIDAY
 
NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES  
CALM TO 2 FEET.  
 

 
 
LSZ266-292215-  
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-  
1007 AM EDT MON MAY 29 2017  
   
REST OF TODAY
 
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST BY  
MID AFTERNOON. PATCHY FOG. SCATTERED RAIN SHOWERS. WAVES CALM TO  
2 FEET BUILDING TO 1 TO 3 FEET.    
TONIGHT
 
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO  
20 KNOTS AFTER MIDNIGHT. PATCHY FOG. NUMEROUS RAIN SHOWERS  
THROUGH MIDNIGHT. SCATTERED RAIN SHOWERS AFTER MIDNIGHT. WAVES  
BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
TUESDAY
 
WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN SHOWERS.  
WAVES SUBSIDING TO 2 TO 4 FEET.    
TUESDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN  
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO  
4 FEET.    
WEDNESDAY
 
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.    
WEDNESDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO  
2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.    
THURSDAY
 
WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST. WAVES  
SUBSIDING TO CALM TO 2 FEET.    
FRIDAY
 
NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES  
CALM TO 2 FEET.  
 

 
 
LSZ267-292215-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
1007 AM EDT MON MAY 29 2017  
   
REST OF TODAY
 
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST BY  
MID AFTERNOON. PATCHY FOG. SCATTERED RAIN SHOWERS AND ISOLATED  
THUNDERSTORMS. WAVES CALM TO 2 FEET.    
TONIGHT
 
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO  
20 KNOTS AFTER MIDNIGHT. PATCHY FOG. NUMEROUS RAIN SHOWERS. WAVES  
BUILDING TO 2 TO 4 FEET.    
TUESDAY
 
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES  
BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET...THEN SUBSIDING  
TO 1 TO 3 FEET.    
TUESDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO  
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES 1 TO  
3 FEET.    
WEDNESDAY
 
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS THROUGH EARLY  
AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO  
3 FEET.    
WEDNESDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.   
THURSDAY
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A CHANCE  
OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.    
FRIDAY
 
NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES  
CALM TO 2 FEET.  
 

 
LSZ261-292215-  
MAFOR 2915/  
SUPERIOR WEST 11620 12636 12630 13620. SCATTERED SHOWERS LATE  
THIS MORNING. SCATTERED SHOWERS THROUGH THE EARLY OVERNIGHT.  
CHANCE OF SHOWERS TUESDAY MORNING. WAVES 2 TO 4 FEET.  
 
SUPERIOR NORTH CENTRAL 11510 12520 11626 12620 12630. PATCHY FOG.  
SCATTERED RAIN SHOWERS THIS AFTERNOON. SCATTERED SHOWERS TONIGHT.  
CHANCE OF SHOWERS TUESDAY MORNING. WAVES 1 TO 3 FEET THIS  
AFTERNOON. WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET TONIGHT.  
WAVES 3 TO 5 FEET TUESDAY MORNING.  
 
SUPERIOR SOUTH CENTRAL 11400 12510 11526 12620 12630. PATCHY FOG.  
SCATTERED SHOWERS THIS AFTERNOON. SCATTERED SHOWERS OVERNIGHT.  
SCATTERED SHOWERS THROUGH MID MORNING TUESDAY MORNING. WAVES 2  
FEET OR LESS THIS AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4  
FEET TONIGHT. WAVES 3 TO 5 FEET TUESDAY MORNING.  
 
SUPERIOR EAST 11410 11400 11510 12516 11520 11620 11630. PATCHY  
FOG. SCATTERED SHOWERS THIS AFTERNOON. SCATTERED SHOWERS LATE  
TONIGHT. CHANCE OF SHOWERS TUESDAY MORNING. WAVES 1 FOOT OR LESS  
THIS AFTERNOON. WAVES 2 FEET OR LESS BUILDING TO 2 TO 4 FEET  
TONIGHT. WAVES 3 TO 5 FEET TUESDAY MORNING.  
 

 
 
BEACHLER  
 
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT  
WEATHER.GOV/MQT/GLFTABLE  
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:  
WEATHER.GOV/GREATLAKES  
 




Random Weather Facts

Did you know?
The technique for measuring wind chill was developed by scientists in Antarctica during the Second World War. They measured how long it took to freeze vials of water exposed to different wind conditions in temperatures below 0ºC. Then they developed formulas for relating heat loss to wind speed and air temperature.