Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 252005
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
405 PM EDT TUE AUG 25 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.7 INCH LOW PRESSURE CENTERED OVER JAMES BAY WILL
DRIFT OVER NORTHERN QUEBEC WEDNESDAY. A 30.2 INCH HIGH PRESSURE
SYSTEM CENTERED OVER MINNESOTA WEDNESDAY MORNING WILL MOVE OVER THE
GREAT LAKES THURSDAY AND REACH THE EAST COAST FRIDAY. A 29.7 INCH
LOW PRESSURE OVER THE CENTRAL PLAINS FRIDAY MORNING WILL WEAKEN TO
29.9 INCHES SATURDAY...AS A HIGH PRESSURE RIDGE OF 30.1 INCHES
BUILDS OVER THE NORTHERN GREAT LAKES. THE RIDGE WILL REMAIN IN PLACE
THROUGH SUNDAY...AS A LOW PRESSURE TROUGH OF 29.6 INCHES MAKES ITS
WAY FROM THE NORTHERN ROCKIES TO THE NORTHERN PLAINS.

LSZ162-260415-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
405 PM EDT TUE AUG 25 2015 /305 PM CDT TUE AUG 25 2015/

.LATE THIS AFTERNOON...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES 1 TO
3 FEET SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS DIMINISHING TO LESS
THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM
TO 2 FEET.

$$

LSZ263-260415-
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-
405 PM EDT TUE AUG 25 2015

.LATE THIS AFTERNOON...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO
2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ264-260415-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
405 PM EDT TUE AUG 25 2015

.LATE THIS AFTERNOON...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES 3 TO
6 FEET SUBSIDING TO 2 TO 4 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 1 TO
3 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 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...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO
2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM
TO 2 FEET.

$$

LSZ265-260415-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
405 PM EDT TUE AUG 25 2015

.LATE THIS AFTERNOON...NORTHWEST WINDS 20 TO 30 KNOTS. ISOLATED
SHOWERS AND PATCHY DRIZZLE. WAVES 3 TO 6 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS VEERING NORTH AFTER
MIDNIGHT. ISOLATED SHOWERS AND PATCHY DRIZZLE THROUGH MIDNIGHT.
WAVES 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...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.SATURDAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST.
WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS.
WAVES CALM TO 2 FEET.

$$

LSZ266-260415-
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-
405 PM EDT TUE AUG 25 2015

.LATE THIS AFTERNOON...NORTHWEST WINDS 20 TO 30 KNOTS. ISOLATED
SHOWERS AND PATCHY DRIZZLE. WAVES 4 TO 7 FEET SUBSIDING TO 3 TO
6 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. WAVES 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
SOUTHWEST AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO
3 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.SATURDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. WAVES
CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.

$$

LSZ267-260415-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
405 PM EDT TUE AUG 25 2015

.LATE THIS AFTERNOON...NORTHWEST WINDS 20 TO 30 KNOTS. WAVES 4 TO
7 FEET SUBSIDING TO 3 TO 6 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. ISOLATED SHOWERS AND
PATCHY DRIZZLE. WAVES 3 TO 5 FEET.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO
1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF
SHOWERS. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM
TO 2 FEET.

$$

LSZ261-260415-
MAFOR 2521/
SUPERIOR WEST 11710 11720 11820 11810 12710 11700 11510. WAVES 1
TO 3 FEET.

SUPERIOR NORTH CENTRAL 12730 12830 14720. WAVES 3 TO 6 FEET
SUBSIDING TO 1 TO 3 FEET TONIGHT AND WEDNESDAY.

SUPERIOR SOUTH CENTRAL 13740 11840 11830 12730 11720. WAVES 2 TO 6
FEET TONIGHT SUBSIDING TO 1 TO 3 FEET WEDNESDAY.

SUPERIOR EAST 16730. WAVES 3 TO 6 FEET.

$$

JS



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