Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 041410
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1010 AM EDT TUE AUG 4 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.0 INCH HIGH PRESSURE RIDGE OVER CENTRAL CANADA WILL
CONTINUE TO BUILD AND PERSIST ACROSS THE UPPER GREAT LAKES THROUGH
WEDNESDAY. BY THURSDAY...LOW PRESSURE OF 29.7 INCHES WILL DEVELOP
OVER THE HIGH PLAINS AND MOVE EASTWARD THROUGH THE LOWER LAKES TO
THE MID ATLANTIC COAST BY SATURDAY. HIGH PRESSURE RIDGING OF 29.9
INCHES WILL REMAIN ACROSS THE UPPER GREAT LAKES DURING THIS TIME.

LSZ162-042215-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1010 AM EDT TUE AUG 4 2015

.REST OF TODAY...WEST WINDS LESS THAN 10 KNOTS BACKING SOUTH BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS LESS THAN 10 KNOTS BACKING NORTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST
AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO
1 TO 3 FEET.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS.
A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ263-042215-
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-
1010 AM EDT TUE AUG 4 2015

.REST OF TODAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST LESS THAN
10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS LESS THAN 10 KNOTS BECOMING
NORTHEAST 5 TO 15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. WAVES 1 TO 3 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ264-042215-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1010 AM EDT TUE AUG 4 2015

.REST OF TODAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST
AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES CALM
TO 2 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-042215-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1010 AM EDT TUE AUG 4 2015

.REST OF TODAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS LESS THAN 10 KNOTS VEERING EAST BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST BY MID
AFTERNOON. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT AND FRIDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF
SHOWERS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ266-042215-
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-
1010 AM EDT TUE AUG 4 2015

.REST OF TODAY...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS LESS THAN 10 KNOTS BECOMING
SOUTHEAST 5 TO 15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF
SHOWERS. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.

$$

LSZ267-042215-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1010 AM EDT TUE AUG 4 2015

.REST OF TODAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
LESS THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS LESS THAN 10 KNOTS BACKING NORTHEAST BY
MID AFTERNOON. A CHANCE OF SHOWERS BY MID AFTERNOON. WAVES CALM
TO 2 FEET.
.THURSDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS VEERING EAST. A CHANCE OF
SHOWERS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$
LSZ261-042215-
MAFOR 0415/
SUPERIOR WEST 11500 12400 13500 12300. WAVES 1 FOOT OR LESS.

SUPERIOR NORTH CENTRAL 11710 13610 14600. WAVES 1 FOOT OR LESS.

SUPERIOR SOUTH CENTRAL 15710 12700. WAVES 1 FOOT OR LESS.

SUPERIOR EAST 16710. WAVES 1 TO 2 FEET.

$$

JS


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