Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 210759
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
359 AM EDT SUN AUG 21 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A LOW PRESSURE SYSTEM OF 29.4 INCHES OVER FAR EASTERN
LAKE SUPERIOR WILL MOVE OVER JAMES BAY THIS MORNING. A 30.1 INCH HIGH
PRESSURE OVER THE SOUTHERN PLAINS THIS MORNING WILL BUILD TO 30.2
INCHES OVER THE OHIO VALLEY MONDAY AND REACH THE EAST COAST TUESDAY.
A LOW PRESSURE OF 29.6 INCHES OVER THE NORTHERN PLAINS TUESDAY
AFTERNOON WILL EDGE EASTWARD THROUGH WEDNESDAY...WITH A 29.8 INCH
TROUGH EXTENDING SOUTHWARD TO THE CENTRAL PLAINS. BY THURSDAY...THE
LOW WILL REACH NORTHERN QUEBEC WITH THE TROUGH CROSSING THE UPPER
GREAT LAKES.

LSZ162-211600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
359 AM EDT SUN AUG 21 2016 /259 AM CDT SUN AUG 21 2016/

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

$$

LSZ263-211600-
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-
359 AM EDT SUN AUG 21 2016

.EARLY THIS MORNING...NORTH WINDS 20 TO 30 KNOTS. ISOLATED
SHOWERS. WAVES 4 TO 8 FEET.
.TODAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS THROUGH EARLY AFTERNOON. WAVES SUBSIDING
TO CALM TO 2 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.

$$

LSZ264-211600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
359 AM EDT SUN AUG 21 2016

...GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING...

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

$$

LSZ265-211600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
359 AM EDT SUN AUG 21 2016

...GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.EARLY THIS MORNING...NORTH GALES TO 40 KNOTS. NUMEROUS SHOWERS.
WAVES 8 TO 11 FEET.
.TODAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A FEW GALE FORCE GUSTS TO 35 KNOTS EARLY.
SCATTERED SHOWERS THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 3 TO 5
FEET.
.TONIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT. WAVES BUILDING TO
1 TO 3 FEET.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST. WAVES
BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-211600-
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-
359 AM EDT SUN AUG 21 2016

...GALE WARNING IN EFFECT UNTIL NOON EDT TODAY...

.EARLY THIS MORNING...NORTH GALES TO 45 KNOTS. NUMEROUS SHOWERS.
WAVES 10 TO 14 FEET BUILDING TO 11 TO 15 FEET.
.TODAY...NORTH GALES TO 35 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS BY MID AFTERNOON. SCATTERED SHOWERS THROUGH EARLY
AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET.
.TONIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
2 TO 4 FEET.
.WEDNESDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING
TO 3 TO 5 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ267-211600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
359 AM EDT SUN AUG 21 2016

...GALE WARNING IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.EARLY THIS MORNING...NORTHWEST GALES TO 45 KNOTS. NUMEROUS
SHOWERS. WAVES 8 TO 11 FEET BUILDING TO 11 TO 15 FEET.
.TODAY...NORTHWEST GALES TO 40 KNOTS DIMINISHING TO 20 TO
30 KNOTS BY MID AFTERNOON. NUMEROUS SHOWERS THROUGH EARLY
AFTERNOON...THEN ISOLATED SHOWERS. WAVES BUILDING TO 12 TO 17
FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
1 TO 3 FEET.
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO
2 TO 4 FEET.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
2 TO 4 FEET.
.WEDNESDAY...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES
BUILDING TO 1 TO 3 FEET.

$$

LSZ261-211600-
MAFOR 2109/
SUPERIOR WEST 11830 12720 13620 11610 11520. WAVES 1 TO 6 FEET.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11850 11840
11730 11720 13620 11610. SCATTERED SHOWERS EARLY THIS MORNING.
WAVES 4 TO 9 FEET TODAY SUBSIDING TO 2 TO 4 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11856 11840
13730 13620. SCATTERED SHOWERS THIS MORNING. WAVES 9 TO 12 FEET
SUBSIDING TO 4 TO 7 FEET TODAY. WAVES SUBSIDING TO 1 TO 3 FEET
TONIGHT.

SUPERIOR EAST...GALE WARNING IN EFFECT...11766 11856 11740 13730
11720 11620. SCATTERED SHOWERS LATE THIS MORNING. WAVES 10 TO 15
FEET SUBSIDING TO 5 TO 7 FEET TODAY. WAVES SUBSIDING TO 3 TO 6 FEET
TONIGHT.

$$

KEC



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