Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 120159
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
959 PM EDT SAT APR 11 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.1 INCH HIGH PRESSURE RIDGE OVER THE LOWER GREAT
LAKES AND THE OHIO RIVER VALLEY WILL SHIFT EAST INTO THE MID ATLANTIC
STATES ON SUNDAY. A 29.1 INCH LOW PRESSURE SYSTEM MOVING THROUGH
CENTRAL CANADA ON SUNDAY WILL MOVE TO HUDSON BAY ON MONDAY...DRAGGING
A LOW PRESSURE TROUGH OF 29.7 INCHES ACROSS THE GREAT LAKES SUNDAY
NIGHT. A TRAILING 30.1 INCH HIGH PRESSURE SYSTEM WILL MOVE INTO THE
GREAT LAKES MONDAY NIGHT AND LINGER THROUGH WEDNESDAY NIGHT.
THURSDAY...LOW PRESSURE OF 29.5 INCHES WILL SLIDE OVER HUDSON BAY
BRINGING A WEAK TROUGH OF 30.0 INCHES ACROSS LAKE SUPERIOR.

LSZ162-121000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
959 PM EDT SAT APR 11 2015

.REST OF TONIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 1 TO
3 FEET.
.SUNDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS BY
MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY THROUGH
MIDNIGHT...THEN A SLIGHT CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-121000-
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-
959 PM EDT SAT APR 11 2015

.REST OF TONIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 1 TO
3 FEET.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. RAIN SHOWERS LIKELY THROUGH MIDNIGHT...THEN A CHANCE OF
RAIN SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO 1
TO 3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF RAIN
SHOWERS THROUGH EARLY AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET...
THEN SUBSIDING TO 3 TO 6 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. WAVES
CALM TO 2 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

$$

LSZ264-121000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
959 PM EDT SAT APR 11 2015

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS.
.MONDAY...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS
THROUGH EARLY AFTERNOON.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

LSZ265-121000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
959 PM EDT SAT APR 11 2015

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING NORTHWEST. WAVES
CALM TO 2 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

$$

LSZ266-121000-
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-
959 PM EDT SAT APR 11 2015

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS
THROUGH MIDNIGHT...THEN RAIN SHOWERS LIKELY AND A SLIGHT CHANCE
OF THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING NORTHWEST. WAVES
CALM TO 2 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

$$

LSZ267-121000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
959 PM EDT SAT APR 11 2015

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS. RAIN SHOWERS LIKELY
AND A SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.
.MONDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH
AFTER MIDNIGHT.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$
LSZ261-121000-
MAFOR 1203/
SUPERIOR WEST 11410 11420 12430 11420 12430 11426. SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS SUNDAY EVENING. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 11410 12420 11430 11420 12430 11420. WAVES
OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR SOUTH CENTRAL 12410 11420 12430 12440 11430. WAVES 1 TO 4
FEET.

SUPERIOR EAST 12410 11420 13430 12440. WAVES OMITTED FOR MOSTLY
ICE COVERED AREAS.

$$

KEC



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