Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 020746
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
346 AM EDT SUN AUG 2 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.3 INCH LOW PRESSURE OVER SOUTHERN HUDSON BAY WILL
CONTINUE TO DRIFT TO JAMES BAY TODAY AND IS FORECAST TO WEAKEN TO
29.5 INCHES BY THIS EVENING. THIS FEATURE WILL SWING A TROUGH OF
29.6 INCHES ACROSS THE UPPER GREAT LAKES TODAY. A COLD FRONT WILL
THEN PUSH INTO THE REGION ON MONDAY AHEAD OF A 30.1 INCH HIGH
PRESSURE RIDGE BUILDING INTO THE REGION FROM CENTRAL CANADA. THIS
HIGH WILL REACH THE UPPER GREAT LAKES BY TUESDAY AS THE HUDSON BAY
LOW DRIFTS EASTWARD ACROSS QUEBEC. THE RIDGE WILL SLOWLY CROSS THE
UPPER GREAT LAKES WEDNESDAY THROUGH THURSDAY AS 29.8 INCH LOW
PRESSURE DEVELOPS OVER THE CENTRAL PLAINS.

LSZ162-021600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
346 AM EDT SUN AUG 2 2015

.TODAY...WEST WINDS 5 TO 15 KNOTS. SCATTERED SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. ISOLATED SHOWERS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SHOWERS.
WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF SHOWERS THROUGH MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY AND THURSDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2
FEET.

$$

LSZ263-021600-
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-
346 AM EDT SUN AUG 2 2015

.TODAY...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS BY
MID AFTERNOON. SCATTERED SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. ISOLATED SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING EAST. WAVES
CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ264-021600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
346 AM EDT SUN AUG 2 2015

.TODAY...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS BY
MID AFTERNOON. SCATTERED SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. ISOLATED RAIN SHOWERS AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF RAIN
SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH. WAVES CALM
TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH. WAVES
CALM TO 2 FEET.

$$

LSZ265-021600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
346 AM EDT SUN AUG 2 2015

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. ISOLATED SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TODAY...WEST WINDS 5 TO 15 KNOTS. NUMEROUS SHOWERS THROUGH EARLY
AFTERNOON BECOMING SCATTERED. SCATTERED THUNDERSTORMS. WAVES CALM TO
2 FEET.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY AND TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES
CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS VEERING EAST. WAVES CALM
TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH. WAVES
CALM TO 2 FEET.

$$

LSZ266-021600-
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-
346 AM EDT SUN AUG 2 2015

.EARLY THIS MORNING...SOUTHWEST WINDS 10 TO 20 KNOTS. ISOLATED
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. SCATTERED SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH. WAVES
CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ267-021600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
346 AM EDT SUN AUG 2 2015

.TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. SCATTERED SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST AFTER
MIDNIGHT. ISOLATED SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT.
WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ261-021600-
MAFOR 0209/
SUPERIOR WEST 12700 12600 11610 13710. SCATTERED SHOWERS AND
THUNDERSTORMS THIS MORNING. WAVES 2 FEET OR LESS.

SUPERIOR NORTH CENTRAL 11500 13600 12610 12700. SCATTERED SHOWERS
AND THUNDERSTORMS THIS MORNING. WAVES 1 TO 2 FEET.

SUPERIOR SOUTH CENTRAL 12600 11506 11500 11600 12700 11710.
SCATTERED SHOWERS AND THUNDERSTORMS THROUGH THIS AFTERNOON. WAVES 2
FEET OR LESS.

SUPERIOR EAST 14500 11600 12700 11600. SCATTERED SHOWERS AND
THUNDERSTORMS TODAY. WAVES 2 FEET OR LESS.

$$

07


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