Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 240811
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
411 AM EDT MON AUG 24 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.5 INCH LOW PRESSURE SYSTEM NORTH OF LAKE SUPERIOR
WILL WEAKEN TO 29.7 INCHES WHILE DRIFTING TO SOUTH OF JAMES BAY BY
TUESDAY AFTERNOON. THE LOW WILL LIFT INTO QUEBEC ON WEDNESDAY...
ALLOWING A HIGH PRESSURE SYSTEM TO BUILD INTO THE GREAT LAKES BY LATE
WEDNESDAY. AS THE HIGH SHIFTS TO THE MID ATLANTIC STATES ON
FRIDAY...A 29.9 INCH LOW PRESSURE TROUGH WILL APPROACH NORTHERN LAKE
SUPERIOR FROM THE NORTHWEST.

LSZ162-241615-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
411 AM EDT MON AUG 24 2015 /311 AM CDT MON AUG 24 2015/

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.EARLY THIS MORNING...WEST GALES TO 35 KNOTS. ISOLATED SHOWERS.
WAVES 4 TO 7 FEET.
.TODAY...NORTHWEST GALES TO 35 KNOTS. SCATTERED SHOWERS. WAVES
SUBSIDING TO 3 TO 6 FEET...THEN BUILDING TO 4 TO 7 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS THROUGH
EARLY AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE
OF SHOWERS THROUGH MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ263-241615-
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-
411 AM EDT MON AUG 24 2015

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.EARLY THIS MORNING...WEST GALES TO 35 KNOTS. SCATTERED SHOWERS.
WAVES 6 TO 9 FEET.
.TODAY...NORTHWEST GALES TO 35 KNOTS. SCATTERED SHOWERS. WAVES
SUBSIDING TO 5 TO 8 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO 3 TO 5 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ264-241615-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
411 AM EDT MON AUG 24 2015

.EARLY THIS MORNING...WEST WINDS 20 TO 30 KNOTS. SCATTERED
SHOWERS. WAVES 5 TO 9 FEET.
.TODAY...WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST BY MID
AFTERNOON. SCATTERED SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE
GUSTS TO 35 KNOTS LATE. A CHANCE OF SHOWERS. WAVES 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE
GUSTS TO 35 KNOTS. A CHANCE OF SHOWERS. WAVES 3 TO 6 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ265-241615-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
411 AM EDT MON AUG 24 2015

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.EARLY THIS MORNING...WEST GALES TO 35 KNOTS. SCATTERED SHOWERS.
WAVES 3 TO 6 FEET.
.TODAY...WEST GALES TO 35 KNOTS. NUMEROUS SHOWERS. WAVES 3 TO
6 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SHOWERS.
WAVES 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SHOWERS.
WAVES 3 TO 6 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. WAVES
CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.

$$

LSZ266-241615-
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-
411 AM EDT MON AUG 24 2015

.EARLY THIS MORNING...WEST WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE
OF WATERSPOUTS. SCATTERED SHOWERS. WAVES 4 TO 7 FEET.
.TODAY...WEST WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF
WATERSPOUTS. NUMEROUS SHOWERS. WAVES 4 TO 7 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO
35 KNOTS LATE. SHOWERS LIKELY. WAVES SUBSIDING TO 3 TO 6 FEET...THEN
BUILDING TO 4 TO 7 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS
TO 35 KNOTS. SHOWERS LIKELY THROUGH EARLY AFTERNOON...THEN A CHANCE
OF SHOWERS BY MID AFTERNOON. WAVES 4 TO 7 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
BUILDING TO 5 TO 8 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO CALM TO 2 FEET.

$$

LSZ267-241615-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
411 AM EDT MON AUG 24 2015

.EARLY THIS MORNING...SOUTHWEST WINDS 15 TO 25 KNOTS. A SLIGHT
CHANCE OF WATERSPOUTS. NUMEROUS SHOWERS. WAVES 2 TO 4 FEET BUILDING
TO 3 TO 5 FEET.
.TODAY...WEST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF WATERSPOUTS.
NUMEROUS SHOWERS. WAVES BUILDING TO 3 TO 6 FEET.
.TONIGHT...WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. SHOWERS. WAVES 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SHOWERS.
WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF
SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM TO
2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ261-241615-
MAFOR 2409/
SUPERIOR WEST...GALE WARNING IN EFFECT...13750 14740 11730.
SCATTERED SHOWERS. WAVES 3 TO 8 FEET.

SUPERIOR NORTH CENTRAL 12640 11746 13730 12740. SCATTERED SHOWERS
THIS MORNING. SCATTERED SHOWERS LATE TODAY. CHANCE OF SHOWERS
TONIGHT. WAVES 5 TO 8 FEET.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11650 12656
11646 14746. SCATTERED SHOWERS THIS MORNING. WAVES 3 TO 7 FEET.

SUPERIOR EAST 11530 14636 13736. SCATTERED SHOWERS EARLY THIS
MORNING. SLIGHT CHANCE OF WATERSPOUTS TODAY. WAVES 3 TO 6 FEET.

$$

KC



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