Forecast for Lake Superior

086 
FZUS63 KMQT 250913
GLFLS 

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
413 AM EST SAT FEB 25 2017

.SYNOPSIS...A 29.4 INCH LOW PRESSURE OVER NORTHERN LAKE HURON THIS 
MORNING WILL TRACK NORTHEAST INTO WESTERN QUEBEC THIS AFTERNOON AND 
DEEPEN TO 29.1 INCHES. AS THIS LOW CONTINUES TO THE NORTHEAST... 
EXPECT A 30.2 INCH HIGH PRESSURE CENTERED ACROSS THE SOUTHERN PLAINS 
TODAY TO DRIFT INTO THE SOUTHEAST STATES ON SUNDAY...EXTENDING A 
29.9 INCH RIDGE AXIS INTO THE UPPER LAKES TONIGHT. A LOW PRESSURE 
TROUGH AVERAGING 29.8 INCHES WILL THEN MOVE ACROSS THE UPPER GREAT 
LAKES ON SUNDAY AHEAD OF A 30.1 INCH HIGH PRESSURE THAT WILL FOLLOW 
ACROSS THE GREAT LAKES SUNDAY NIGHT AND MONDAY. AFTER THIS HIGH 
SHIFTS INTO NEW ENGLAND ON TUESDAY...A 29.6 INCH LOW PRESSURE 
DEVELOPING OVER THE CENTRAL PLAINS ON MONDAY NIGHT WILL MOVE INTO 
THE NORTH CENTRAL GREAT LAKES ON TUESDAY. ALTHOUGH THIS LOW WILL 
EXIT TOWARD NEW ENGLAND ON WEDNESDAY...A LOW PRESSURE TROUGH 
AVERAGING 30.0 INCHES WILL LINGER BACK INTO THE UPPER GREAT LAKES.

LSZ162-251715-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
413 AM EST SAT FEB 25 2017 /313 AM CST SAT FEB 25 2017/

.EARLY THIS MORNING...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY.
ISOLATED SNOW SHOWERS. WAVES 3 TO 6 FEET. 
.TODAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING.
ISOLATED SNOW SHOWERS IN THE MORNING. WAVES SUBSIDING TO 2 TO
4 FEET. 
.TONIGHT...WEST WINDS 10 TO 20 KNOTS. SCATTERED SNOW SHOWERS.
WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO 4 FEET. 
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING...
THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING
TO CALM TO 2 FEET. 
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET. 
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET. 
.MONDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES CALM TO 2 FEET. 
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
6 FEET. 
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET. 

$$

LSZ263-251715-
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-
413 AM EST SAT FEB 25 2017

.EARLY THIS MORNING...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY.
SCATTERED SNOW SHOWERS. WAVES 4 TO 7 FEET. 
.TODAY...NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY. 
SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET. 
.TONIGHT...WEST WINDS 15 TO 25 KNOTS. SCATTERED SNOW SHOWERS IN
THE EVENING...THEN NUMEROUS SNOW SHOWERS AFTER MIDNIGHT. WAVES
SUBSIDING TO 2 TO 4 FEET. 
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS. SNOW SHOWERS LIKELY.
WAVES SUBSIDING TO CALM TO 2 FEET. 
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES CALM TO
2 FEET. 
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES CALM TO 2 FEET. 
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO
7 FEET. 
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET. 

$$

LSZ264-251715-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
413 AM EST SAT FEB 25 2017

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.EARLY THIS MORNING...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY.
SNOW LIKELY. WAVES 5 TO 8 FEET. 
.TODAY...NORTH GALES TO 35 KNOTS BACKING NORTHWEST IN THE 
AFTERNOON. FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES BUILDING
TO 6 TO 9 FEET.
.TONIGHT...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. SCATTERED
SNOW SHOWERS IN THE EVENING...THEN NUMEROUS SNOW SHOWERS AFTER
MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET. 
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS. SNOW SHOWERS LIKELY IN
THE MORNING...THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON.
WAVES SUBSIDING TO CALM TO 2 FEET. 
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET. 
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO
1 TO 3 FEET. 
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET. 
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. FREEZING SPRAY. WAVES
BUILDING TO 6 TO 9 FEET. 
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET. 

$$

LSZ265-251715-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
413 AM EST SAT FEB 25 2017

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.EARLY THIS MORNING...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY.
SNOW. WAVES 6 TO 9 FEET. 
.TODAY...NORTHWEST GALES TO 35 KNOTS. FREEZING SPRAY. SNOW
SHOWERS IN THE MORNING. SCATTERED SNOW SHOWERS IN THE AFTERNOON.
WAVES SUBSIDING TO 4 TO 7 FEET. 
.TONIGHT...WEST WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. SCATTERED
SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET. 
.SUNDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. SNOW SHOWERS LIKELY. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET. 
.SUNDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET. 
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES
CALM TO 2 FEET. 
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET...THEN
SUBSIDING TO CALM TO 2 FEET. 
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS...THEN SNOW SHOWERS LIKELY.
WAVES BUILDING TO 5 TO 8 FEET. 
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS BACKING NORTH. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET. 

$$

LSZ266-251715-
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-
413 AM EST SAT FEB 25 2017

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.EARLY THIS MORNING...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY.
SNOW. WAVES 6 TO 9 FEET. 
.TODAY...NORTH GALES TO 35 KNOTS BECOMING NORTHWEST GALES TO
40 KNOTS IN THE AFTERNOON. FREEZING SPRAY. SNOW SHOWERS IN THE
MORNING. SCATTERED SNOW SHOWERS IN THE AFTERNOON. WAVES BUILDING
TO 8 TO 11 FEET. 
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. SCATTERED
SNOW SHOWERS IN THE EVENING...THEN NUMEROUS SNOW SHOWERS AFTER
MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET. 
.SUNDAY...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. SNOW SHOWERS LIKELY. WAVES SUBSIDING TO 1 TO 3 FEET. 
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET. 
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET. 
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO CALM TO 2 FEET. 
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS...THEN SNOW SHOWERS LIKELY.
WAVES BUILDING TO 5 TO 8 FEET. 
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS. FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 6 TO 9 FEET...THEN
SUBSIDING TO 1 TO 3 FEET. 

$$

LSZ267-251715-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
413 AM EST SAT FEB 25 2017

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.EARLY THIS MORNING...NORTH WINDS 15 TO 25 KNOTS. FREEZING SPRAY.
SNOW AND A CHANCE OF FREEZING DRIZZLE. WAVES 4 TO 7 FEET
SUBSIDING TO 3 TO 6 FEET. 
.TODAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS IN THE AFTERNOON. FREEZING SPRAY. SNOW SHOWERS WITH A 
SLIGHT CHANCE OF FREEZING DRIZZLE. WAVES BUILDING TO 8 TO 11 
FEET. 
.TONIGHT...NORTHWEST GALES TO 35 KNOTS BECOMING WEST 20 TO
30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. NUMEROUS
SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET. 
.SUNDAY...SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY. WAVES SUBSIDING
TO 1 TO 3 FEET. 
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET. 
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET. 
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET. 
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS...THEN SNOW SHOWERS LIKELY.
WAVES BUILDING TO 4 TO 7 FEET. 
.WEDNESDAY...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 5 TO
8 FEET...THEN SUBSIDING TO CALM TO 2 FEET. 

$$

LSZ261-251715-
MAFOR 2510/
SUPERIOR WEST 11840 11740 12730 14630. FREEZING SPRAY. SCATTERED 
SNOW SHOWERS TONIGHT. WAVES 2 TO 7 FEET. 

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11847 11857
13740 11740 11630 11637. FREEZING SPRAY. SCATTERED SNOW SHOWERS
INTO THIS EVENING. WAVES 5 TO 9 FEET SUBSIDING TO 4 TO 7 FEET 
TODAY AND SUBSIDING TO 3 TO 6 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11847 12757 
11750 12740 12630. FREEZING SPRAY. SCATTERED SNOW SHOWERS LATE 
THIS MORNING INTO TONIGHT. WAVES 6 TO 10 FEET TODAY. WAVES 5 TO 8
FEET SUBSIDING TO 3 TO 5 FEET TONIGHT. 

SUPERIOR EAST...GALE WARNING IN EFFECT...11837 11857 11757 14747
11637. FREEZING SPRAY. WAVES 5 TO 8 FEET BUILDING TO 7 TO 11 FEET
TODAY AND SUBSIDING TO 5 TO 9 FEET TONIGHT.

$$

JLA