Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 270904
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
404 AM EST TUE JAN 27 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.2 INCH RIDGE WILL REMAIN ACROSS LAKE SUPERIOR
THROUGH TONIGHT AS THE MAIN AREA OF HIGH PRESSURE SINKS TO THE LOWER
GREAT LAKES AND OHIO VALLEY. 29.4 INCH LOW PRESSURE OVER NORTHERN
HUDSON BAY AND 29.7 INCH LOW PRESSURE ACROSS THE NORTHERN AND CENTRAL
PLAINS WILL PUSH A TROUGH AVERAGING 29.9 INCHES OVER LAKE SUPERIOR
WEDNESDAY NIGHT. THE TROUGH WILL FILL TO 30.3 INCHES ON
THURSDAY...AND 30.5 INCHES THURSDAY NIGHT...AS THE LOW ACROSS THE
PLAINS SHIFTS TO SOUTHERN LOWER MICHIGAN...AND THEN THE NEW ENGLAND
STATES. EXPECT 30.7 INCH HIGH PRESSURE OVER SASKATCHEWAN ON THURSDAY
TO SINK ACROSS MINNESOTA AND WESTERN LAKE SUPERIOR FRIDAY
MORNING...AND INTO THE OHIO VALLEY AND MID ATLANTIC STATES AT 30.6
INCHES SATURDAY. A BRIEF 30.2 INCH TROUGH OF LOW PRESSURE MAY PUSH
ACROSS LAKE SUPERIOR ON SATURDAY...BEFORE STRONGER HIGH PRESSURE
NEARS FROM CENTRAL CANADA.

LSZ162-271715-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
404 AM EST TUE JAN 27 2015

.EARLY THIS MORNING...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...SOUTH WINDS LESS THAN 10 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF SNOW
IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES CALM TO
2 FEET.
.THURSDAY...NORTHWEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. WAVES CALM TO 2 FEET BUILDING TO 1 TO 3 FEET.

$$

LSZ263-271715-
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-
404 AM EST TUE JAN 27 2015

.EARLY THIS MORNING...SOUTH WINDS 5 TO 15 KNOTS. WAVES 1 TO
3 FEET.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST IN THE
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF SNOW
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO
CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF SNOW.
WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. SNOW LIKELY IN THE EVENING...THEN A
CHANCE OF SNOW AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW. WAVES BUILDING TO
3 TO 6 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY IN THE EVENING.
WAVES SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET.

$$

LSZ264-271715-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
404 AM EST TUE JAN 27 2015

.EARLY THIS MORNING...SOUTH WINDS 5 TO 15 KNOTS. WAVES 2 TO
4 FEET.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST IN THE
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW. WAVES CALM TO
2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. SNOW LIKELY. WAVES CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW. HEAVY FREEZING SPRAY
IN THE AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET.
.THURSDAY NIGHT...NORTH GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 5 TO 8 FEET...THEN SUBSIDING TO 3 TO
5 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 20 TO
30 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET.

$$

LSZ265-271715-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
404 AM EST TUE JAN 27 2015

.EARLY THIS MORNING...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. SNOW LIKELY. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH GALES
TO 40 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW. WAVES BUILDING TO
2 TO 4 FEET.
.THURSDAY NIGHT...NORTH GALES TO 35 KNOTS BECOMING NORTHWEST
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES CALM TO 2 FEET BUILDING TO
1 TO 3 FEET.

$$

LSZ266-271715-
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-
404 AM EST TUE JAN 27 2015

.EARLY THIS MORNING...SOUTH WINDS 10 TO 20 KNOTS. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW.
WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. SNOW LIKELY. WAVES SUBSIDING TO
CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH GALES
TO 40 KNOTS IN THE AFTERNOON. SNOW LIKELY IN THE MORNING...THEN A
CHANCE OF SNOW IN THE AFTERNOON. HEAVY FREEZING SPRAY IN THE
AFTERNOON. WAVES BUILDING TO 5 TO 8 FEET.
.THURSDAY NIGHT...NORTH GALES TO 40 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO 4 TO
7 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS. HEAVY FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS VEERING NORTH. A CHANCE OF
SNOW. FREEZING SPRAY. WAVES BUILDING TO 3 TO 6 FEET.

$$

LSZ267-271715-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
404 AM EST TUE JAN 27 2015

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES 1 TO
3 FEET.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH IN THE
AFTERNOON. A CHANCE OF SNOW. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. SNOW. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS IN THE AFTERNOON. SNOW LIKELY IN THE MORNING...THEN A
CHANCE OF SNOW IN THE AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET.
.THURSDAY NIGHT...NORTH GALES TO 40 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO 4 TO
7 FEET.
.FRIDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS. HEAVY FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. SNOW LIKELY...THEN A CHANCE OF SNOW SHOWERS. FREEZING
SPRAY. WAVES BUILDING TO 3 TO 6 FEET.

$$

LSZ261-271715-
MAFOR 2710/
SUPERIOR WEST 11100 11300 11400 11500 12510 12520. WAVES 2 FEET
OR LESS.

SUPERIOR NORTH CENTRAL 11420 13410 11510 13520. WAVES 4 FEET OR
LESS.

SUPERIOR SOUTH CENTRAL 13410 11310 12420 12510. WAVES 3 FEET OR
LESS.

SUPERIOR EAST 11320 12310 12410 11420 12520. WAVES 3 FEET OR LESS.

$$

KC



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