Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 250842
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
342 AM EST SUN JAN 25 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...30.2 INCH HIGH PRESSURE ACROSS THE WEST HALF OF ONTARIO
WILL TRACK ACROSS NORTHERN LAKE SUPERIOR TODAY...AS 29.6 INCH LOW
PRESSURE EXITS SOUTHEAST ACROSS THE MID MISSISSIPPI VALLEY. EXPECT
29.4 INCH LOW PRESSURE OVER CENTRAL CANADA THIS EVENING TO SINK
ACROSS WESTERN LAKE SUPERIOR MONDAY AFTERNOON AND EVENING AT 29.7
INCHES. A QUICK 30.2 INCH RIDGE WILL THEN SLIDE IN FROM THE WEST ON
TUESDAY...AND INTO THE OHIO VALLEY AT 30.3 INCHES ON WEDNESDAY.
ORGANIZING 29.8 INCH LOW PRESSURE ACROSS THE PLAINS STATES WEDNESDAY
WILL PUSH ACROSS FAR SOUTHERN LAKE MICHIGAN LATE WEDNESDAY NIGHT INTO
THURSDAY MORNING...WHILE SLIDING A 30.0 INCH TROUGH ACROSS LAKE
SUPERIOR. THE LOW WILL THEN TRACK ACROSS THE LOWER GREAT LAKES STATES
THURSDAY...WITH THE TROUGH OVER LAKE SUPERIOR WEAKENING TO 30.2
INCHES.

LSZ162-251645-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
342 AM EST SUN JAN 25 2015

.EARLY THIS MORNING...NORTHEAST WINDS 15 TO 25 KNOTS. ISOLATED
SNOW SHOWERS. WAVES 3 TO 5 FEET.
.TODAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING EAST 5 TO
15 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO
4 FEET.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING...
THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES BUILDING TO
3 TO 5 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS IN THE EVENING. WAVES
CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 2 TO
4 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 1 TO
3 FEET.

$$

LSZ263-251645-
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-
342 AM EST SUN JAN 25 2015

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

$$

LSZ264-251645-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
342 AM EST SUN JAN 25 2015

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

$$

LSZ265-251645-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
342 AM EST SUN JAN 25 2015

.EARLY THIS MORNING...NORTHEAST WINDS 15 TO 25 KNOTS. ISOLATED
SNOW SHOWERS. WAVES 1 TO 3 FEET.
.TODAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS IN THE MORNING.
WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.

$$

LSZ266-251645-
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-
342 AM EST SUN JAN 25 2015

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

$$

LSZ267-251645-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
342 AM EST SUN JAN 25 2015

.EARLY THIS MORNING...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES 2 TO
4 FEET.
.TODAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO 20 KNOTS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO
3 TO 5 FEET.
.MONDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.TUESDAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH IN THE
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. HEAVY FREEZING SPRAY. WAVES
BUILDING TO 3 TO 6 FEET.

$$

LSZ261-251645-
MAFOR 2510/
SUPERIOR WEST 12130 11120 11110 11200 11410 11520 11530. ISOLATED
SNOW SHOWERS TODAY. CHANCE OF SNOW LATE TONIGHT. WAVES 1 TO 5 FEET.

SUPERIOR NORTH CENTRAL 11130 12120 12100 11410 11420 11430. WAVES
1 TO 4 FEET.

SUPERIOR SOUTH CENTRAL 13120 11100 11800 11600 11410 11420. ISOLATED
SNOW SHOWERS THROUGH THIS MORNING. WAVES 4 FEET OR LESS.

SUPERIOR EAST 13120 11110 11800 11200 11400 11420. WAVES 4 FEET OR
LESS.

$$

KC


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