Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 130121
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
921 PM EDT SUN APR 12 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A WEAK COLD FRONTAL TROUGH AVERAGING 29.7 INCHES WILL
PASS ACROSS LAKE SUPERIOR LATE TONIGHT INTO MONDAY MORNING. BEHIND
THIS FRONT...HIGH PRESSURE OF 30.2 INCHES WILL BUILD ACROSS THE
MIDDLE MISSISSIPPI VALLEY MONDAY AND INTO THE GREAT LAKES TUESDAY.
THIS HIGH WILL SHIFT TO QUEBEC BY WEDNESDAY WHILE ANOTHER WEAK COLD
FRONTAL TROUGH OF 30.0 INCHES PASSES ACROSS THE UPPER GREAT LAKES
THURSDAY. ANOTHER AREA OF HIGH PRESSURE OF 30.2 INCHES BUILDS ACROSS
THE MISSISSIPPI VALLEY FRIDAY.

LSZ162-130930-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
921 PM EDT SUN APR 12 2015

.REST OF TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS. WAVES 2 TO 4 FEET SUBSIDING TO CALM TO
2 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF RAIN
SHOWERS THROUGH EARLY AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.WEDNESDAY...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. WAVES
CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST. WAVES CALM
TO 2 FEET.

$$

LSZ263-130930-
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-
921 PM EDT SUN APR 12 2015

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

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

$$

LSZ264-130930-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
921 PM EDT SUN APR 12 2015

.REST OF TONIGHT...SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. ISOLATED RAIN SHOWERS DEVELOPING BY
MIDNIGHT...THEN NUMEROUS RAIN SHOWERS. ISOLATED THUNDERSTORMS. WAVES
1 TO 3 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS. RAIN SHOWERS LIKELY THROUGH
EARLY AFTERNOON...THEN A SLIGHT CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING 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...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING WEST. WAVES CALM TO
2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES CALM
TO 2 FEET.

$$

LSZ265-130930-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
921 PM EDT SUN APR 12 2015

.REST OF TONIGHT...SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. ISOLATED RAIN SHOWERS BY
MIDNIGHT...THEN NUMEROUS RAIN SHOWERS. ISOLATED THUNDERSTORMS.
WAVES 2 TO 4 FEET SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS. RAIN SHOWERS LIKELY THROUGH
EARLY AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING
TO CALM TO 2 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES 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...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING WEST. WAVES CALM TO
2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES CALM
TO 2 FEET.

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

$$

LSZ266-130930-
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-
921 PM EDT SUN APR 12 2015

...GALE WARNING IN EFFECT UNTIL 2 AM EDT MONDAY...

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

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

$$

LSZ267-130930-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
921 PM EDT SUN APR 12 2015

.REST OF TONIGHT...SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. ISOLATED SHOWERS AND THUNDERSTORMS
AFTER MIDNIGHT.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS BY MID AFTERNOON. RAIN SHOWERS LIKELY AND A SLIGHT
CHANCE OF THUNDERSTORMS THROUGH EARLY AFTERNOON...THEN A SLIGHT
CHANCE OF RAIN SHOWERS.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST
AFTER MIDNIGHT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS.

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

$$
LSZ261-130930-
MAFOR 1303/
SUPERIOR WEST 11540 11526 11610 11620 13630 11620. SCATTERED
SHOWERS WITH ISOLATED THUNDERSTORMS OVERNIGHT THROUGH MONDAY MORNING.
WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 11440 11430 11526 11626 14630. SCATTERED
SHOWERS WITH ISOLATED THUNDERSTORMS OVERNIGHT THROUGH MONDAY MORNING.
WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11450 11430
11420 11526 12630 12620. SCATTERED SHOWERS WITH ISOLATED
THUNDERSTORMS OVERNIGHT THROUGH MONDAY MORNING. WAVES 1 TO 5 FEET.

SUPERIOR EAST...GALE WARNING IN EFFECT...11450 12430 11436 11620
12640 11620. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS MONDAY
MORNING. SCATTERED RAIN SHOWERS MONDAY AFTERNOON. WAVES OMITTED FOR
MOSTLY ICE COVERED AREAS.

$$

KEC


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