Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 070802
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
402 AM EDT TUE JUL 7 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...AS A COLD FRONT AVERAGING 29.7 INCHES FROM NORTHERN
QUEBEC ACROSS THE CENTRAL GREAT LAKES MOVES EAST TO NEW ENGLAND
TONIGHT...HIGH PRESSURE OF 30.1 INCHES OVER THE NORTHERN PLAINS WILL
SLIDE OVER THE UPPER GREAT LAKES. EXPECT THE HIGH TO WEAKEN TO 30.0
INCHES BY WEDNESDAY NIGHT AS A LOW PRESSURE TROUGH OF 29.9 INCHES
CROSSES NORTHERN ONTARIO. AS THIS TROUGH SLIDES OVER QUEBEC BY
FRIDAY...THE HIGH WILL REBUILD FROM THE OHIO VALLEY TO THE UPPER
GREAT LAKES. PLAN ON THE HIGH PRESSURE RIDGE TO LINGER OVER MOST OF
THE GREAT LAKES ON SATURDAY AS A LOW PRESSURE SYSTEM OF 29.6 INCHES
AND WARM FRONT SLOWLY MOVE FROM THE NORTHERN PLAINS TO THE UPPER
MISSISSIPPI RIVER VALLEY.

LSZ162-071615-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
402 AM EDT TUE JUL 7 2015

.EARLY THIS MORNING...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES 1 TO 3
FEET.
.TODAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM
TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ263-071615-
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-
402 AM EDT TUE JUL 7 2015

.EARLY THIS MORNING...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES 1 TO 3
FEET.
.TODAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ264-071615-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
402 AM EDT TUE JUL 7 2015

.EARLY THIS MORNING...NORTHWEST WINDS 10 TO 20 KNOTS. PATCHY FOG.
ISOLATED RAIN SHOWERS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET.
.TODAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING
TO 1 TO 3 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-071615-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
402 AM EDT TUE JUL 7 2015

.EARLY THIS MORNING...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES 2 TO 4
FEET.
.TODAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING
SOUTHWEST AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. 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.

$$

LSZ266-071615-
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-
402 AM EDT TUE JUL 7 2015

.EARLY THIS MORNING...NORTHWEST WINDS 15 TO 25 KNOTS. PATCHY FOG.
WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET.
.TODAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. PATCHY FOG IN THE MORNING. WAVES
SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...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.
.SATURDAY...SOUTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ267-071615-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
402 AM EDT TUE JUL 7 2015

.EARLY THIS MORNING...NORTHWEST WINDS 15 TO 25 KNOTS. PATCHY FOG.
WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET.
.TODAY...NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST BY MID
AFTERNOON. PATCHY FOG IN THE MORNING. WAVES SUBSIDING TO 1 TO 3
FEET.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING EAST LESS
THAN 10 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST LESS THAN
10 KNOTS 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 CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM
TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ261-071615-
MAFOR 0709/
SUPERIOR WEST 12720 11600 14510 11500. WAVES 1 TO 2 FEET.

SUPERIOR NORTH CENTRAL 12720 11610 13620 12510. PATCHY FOG
THROUGH MID MORNING. WAVES 1 TO 4 FEET.

SUPERIOR SOUTH CENTRAL 13720 14610 11600. PATCHY FOG THIS
MORNING. WAVES 1 TO 4 FEET.

SUPERIOR EAST 11730 14720 12710 11600. PATCHY FOG THIS MORNING.
WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 3 FEET TODAY. WAVES 2 TO 3
FEET TONIGHT.

$$

JLA


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