Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 241432
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
932 AM EST SAT JAN 24 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.3 INCH LOW PRESSURE SYSTEM OVER QUEBEC WILL DRIFT
EAST TODAY AND DRAG A TROUGH AVERAGING 29.7 INCHES ACROSS THE UPPER
GREAT LAKES TODAY. IN ITS WAKE...EXPECT A 30.2 INCH HIGH PRESSURE
SYSTEM OVER CENTRAL CANADA TO SHIFT INTO NORTHWEST ONTARIO ON SUNDAY
MORNING AND THEN INTO SOUTHWEST QUEBEC ON MONDAY WHILE A 29.7 INCH
LOW PRESSURE SYSTEM DIVES SOUTHEAST FROM CENTRAL SASKATCHEWAN THIS
MORNING INTO THE MID MISSISSIPPI RIVER VALLEY ON SUNDAY. ANOTHER 29.5
INCH LOW PRESSURE DEVELOPING IN WEST CENTRAL CANADA ON SUNDAY WILL
THEN FOLLOW SOUTHEAST ACROSS LAKE WINNIPEG ON MONDAY MORNING AND
THROUGH WISCONSIN ON MONDAY EVENING WHILE WEAKENING TO 29.9 INCHES.
LOOK FOR A 30.2 INCH HIGH PRESSURE OVER THE NORTHERN PLAINS ON
TUESDAY TO SHIFT EAST INTO THE OHIO RIVER VALLEY ON WEDNESDAY TO THE
SOUTH OF A LOW PRESSURE TROUGH AVERAGING 30.0 INCHES THAT WILL DRIFT
ACROSS NORTHWEST ONTARIO. ANOTHER 29.9 INCH LOW PRESSURE SYSTEM WILL
DEVELOP IN THE NORTHERN PLAINS ON WEDNESDAY.

LSZ162-242245-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
932 AM EST SAT JAN 24 2015

.REST OF TODAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST IN
THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES CALM TO
2 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING EAST 5 TO
15 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW AFTER MIDNIGHT. WAVES
CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ263-242245-
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-
932 AM EST SAT JAN 24 2015

.REST OF TODAY...NORTH WINDS 15 TO 25 KNOTS VEERING NORTHEAST IN
THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES 2 TO
4 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
SNOW. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING EAST 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET.

$$

LSZ264-242245-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
932 AM EST SAT JAN 24 2015

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

$$

LSZ265-242245-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
932 AM EST SAT JAN 24 2015

.REST OF TODAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF FREEZING DRIZZLE
LATE IN THE MORNING. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES 1 TO
3 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO
2 FEET.
.SUNDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
MORNING. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW. WAVES
CALM TO 2 FEET.
.MONDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST AFTER
MIDNIGHT. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW. WAVES
CALM TO 2 FEET.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.
WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ266-242245-
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-
932 AM EST SAT JAN 24 2015

.REST OF TODAY...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY. A
SLIGHT CHANCE OF FREEZING DRIZZLE LATE IN THE MORNING. A SLIGHT
CHANCE OF SNOW SHOWERS. WAVES 3 TO 6 FEET.
.TONIGHT...NORTH WINDS 20 TO 30 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES SUBSIDING TO 1 TO
3 FEET.
.SUNDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
MORNING. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 2 TO 4 FEET.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.
WAVES 2 TO 4 FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE OF
SNOW. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO
3 FEET.
.WEDNESDAY...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHEAST. A
CHANCE OF SNOW. WAVES BUILDING TO 3 TO 5 FEET.

$$

LSZ267-242245-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
932 AM EST SAT JAN 24 2015

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

$$
LSZ261-242245-
MAFOR 2416/
SUPERIOR WEST 11820 11120 11130 14140 11130. CHANCE OF SNOW
SHOWERS SUNDAY MORNING. WAVES CALM TO 4 FEET.

SUPERIOR NORTH CENTRAL 13840 11140 13130 11120. FREEZING SPRAY
LATE THIS MORNING. WAVES 2 TO 6 FEET.

SUPERIOR SOUTH CENTRAL 12840 12830 13130 11120. WAVES 1 TO 5 FEET.

SUPERIOR EAST 14840 13130 11120. FREEZING SPRAY THIS AFTERNOON.
WAVES 2 TO 6 FEET.

$$

PETRO



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