Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 252007
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
407 PM EDT SUN SEP 25 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.2 INCH RIDGE WILL DRIFT EASTWARD ACROSS QUEBEC AND
NEW ENGLAND THROUGH MONDAY. A 29.6 INCH LOW PRESSURE OVER FAR
WESTERN ONTARIO LATE THIS AFTERNOON WILL PUSH A 29.7 INCH TROUGH
ACROSS LAKE SUPERIOR TONIGHT. EXPECT THIS LOW TO DRIFT SOUTHEASTWARD
ACROSS ONTARIO ON MONDAY AND MONDAY NIGHT BEFORE CROSSING FAR
EASTERN LAKE SUPERIOR AT 29.4 INCHES ON TUESDAY. THE LOW WILL THEN
WEAKEN TO 29.9 INCHES THROUGH WEDNESDAY AFTERNOON AS IT MOVES
SOUTHWARD ACROSS LOWER MICHIGAN. HIGH PRESSURE OF 30.3 INCHES WILL
SETTLE ACROSS THE UPPER MISSISSIPPI VALLEY AND UPPER GREAT LAKES FOR
THURSDAY AND FRIDAY.

LSZ162-260415-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
407 PM EDT SUN SEP 25 2016 /307 PM CDT SUN SEP 25 2016/

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.LATE THIS AFTERNOON...SOUTHWEST WINDS 10 TO 20 KNOTS. ISOLATED
SHOWERS. WAVES 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS AFTER MIDNIGHT. SCATTERED SHOWERS. WAVES BUILDING TO
3 TO 6 FEET.
.MONDAY...WEST GALES TO 35 KNOTS. SHOWERS LIKELY. WAVES BUILDING
TO 4 TO 7 FEET.
.MONDAY NIGHT...NORTHWEST GALES TO 35 KNOTS. SHOWERS LIKELY
THROUGH MIDNIGHT...THEN A CHANCE OF SHOWERS. WAVES 4 TO 7 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO 3 TO 6 FEET.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES 3 TO 5 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST. WAVES
CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS. 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-
407 PM EDT SUN SEP 25 2016

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.LATE THIS AFTERNOON...SOUTH WINDS 20 TO 30 KNOTS. SCATTERED
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES 4 TO 7 FEET.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. SCATTERED SHOWERS. WAVES SUBSIDING TO
3 TO 5 FEET...THEN BUILDING TO 4 TO 7 FEET.
.MONDAY...WEST GALES TO 35 KNOTS. SHOWERS LIKELY AND A SLIGHT CHANCE
OF THUNDERSTORMS. WAVES BUILDING TO 7 TO 10 FEET.
.MONDAY NIGHT...NORTHWEST GALES TO 40 KNOTS. A SLIGHT CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT. SHOWERS. WAVES SUBSIDING TO 6 TO
9 FEET.
.TUESDAY...NORTHWEST GALES TO 35 KNOTS VEERING NORTH 20 TO 30 KNOTS BY
MID AFTERNOON. SHOWERS LIKELY. A SLIGHT CHANCE OF THUNDERSTORMS BY
MID AFTERNOON. WAVES SUBSIDING TO 5 TO 8 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO
3 TO 5 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM TO
2 FEET.
.FRIDAY...SOUTHEAST 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-
407 PM EDT SUN SEP 25 2016

...GALE WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

.LATE THIS AFTERNOON...SOUTH WINDS 20 TO 30 KNOTS. A FEW GALE FORCE
GUSTS TO 35 KNOTS. SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 6 TO 9 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS AFTER MIDNIGHT. SCATTERED SHOWERS. WAVES SUBSIDING TO
3 TO 6 FEET...THEN BUILDING TO 4 TO 7 FEET.
.MONDAY...SOUTHWEST WINDS 20 TO 30 KNOTS VEERING WEST BY MID
AFTERNOON. GALE FORCE GUSTS TO 35 KNOTS IN THE AFTERNOON. SHOWERS
LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO 3 TO
6 FEET...THEN BUILDING TO 6 TO 9 FEET.
.MONDAY NIGHT...NORTHWEST GALES TO 40 KNOTS. SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 7 TO 10 FEET...THEN
SUBSIDING TO 5 TO 8 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS VEERING NORTH BY MID
AFTERNOON. A FEW GALE FORCE GUSTS TO 35 KNOTS IN THE MORNING. SHOWERS
AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 6 TO 10 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO 25
KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO 3 TO 5
FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH. WAVES
CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-260415-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
407 PM EDT SUN SEP 25 2016

...GALE WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

.LATE THIS AFTERNOON...SOUTH WINDS 20 TO 30 KNOTS. A FEW GALE FORCE
GUSTS TO 35 KNOTS. SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 4 TO 7 FEET.
.TONIGHT...SOUTH WINDS 15 TO 25 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. SCATTERED SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET...
THEN BUILDING TO 3 TO 5 FEET.
.MONDAY...SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST GALES TO
35 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON...THEN SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 4 TO 7 FEET.
.MONDAY NIGHT...WEST GALES TO 40 KNOTS. SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 4 TO 8 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO
35 KNOTS. SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES
BUILDING TO 6 TO 9 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY THROUGH MIDNIGHT...THEN A
CHANCE OF SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET.
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH. WAVES
CALM TO 2 FEET.
.FRIDAY...EAST 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-
407 PM EDT SUN SEP 25 2016

...GALE WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

.LATE THIS AFTERNOON...SOUTHEAST WINDS 20 TO 30 KNOTS. A FEW GALE
FORCE GUSTS TO 35 KNOTS. SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 5 TO 9 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS AFTER MIDNIGHT. ISOLATED THUNDERSTORMS THROUGH MIDNIGHT.
SCATTERED SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET.
.MONDAY...SOUTHWEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON...THEN SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 5 TO 8 FEET.
.MONDAY NIGHT...WEST GALES TO 35 KNOTS. SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 7 TO 10 FEET...THEN
SUBSIDING TO 5 TO 8 FEET.
.TUESDAY...NORTHWEST 20 TO 30 KNOTS VEERING NORTH BY MID AFTERNOON. A
FEW GALE FORCE GUSTS TO 35 KNOTS. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 6 TO 9 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
SUBSIDING TO 3 TO 6 FEET.
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ267-260415-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
407 PM EDT SUN SEP 25 2016

...GALE WARNING IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH LATE
TONIGHT...

.LATE THIS AFTERNOON...SOUTHEAST GALES 20 TO 30 KNOTS. A FEW GALE
FORCE GUSTS TO 35 KNOTS. A CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS. WAVES 3 TO 6 FEET.
.TONIGHT...SOUTHEAST GALES TO 35 KNOTS BECOMING SOUTH 20 TO
30 KNOTS AFTER MIDNIGHT. NUMEROUS SHOWERS THROUGH
MIDNIGHT...THEN SCATTERED SHOWERS. ISOLATED THUNDERSTORMS. WAVES
BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY...SOUTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SHOWERS
THROUGH EARLY AFTERNOON...THEN SHOWERS LIKELY. WAVES BUILDING TO 5
TO 8 FEET.
.MONDAY NIGHT...WEST 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO 35
KNOTS. SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES BUILDING
TO 7 TO 10 FEET...THEN SUBSIDING TO 5 TO 8 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS BY MID AFTERNOON. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO
4 TO 7 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF
SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST. WAVES CALM
TO 2 FEET.

$$

LSZ261-260415-
MAFOR 2521/
SUPERIOR WEST...GALE WARNING IN EFFECT...11520 11530 11540 11640
12646 12656. SCATTERED SHOWERS LATE TONIGHT. WAVES 2 TO 7 FEET.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11356 11440
11520 13530 11536 11646. SLIGHT CHANCE OF THUNDERSTORMS. SCATTERED
SHOWERS LATE THIS EVENING THROUGH MONDAY MORNING. WAVES 4 TO 9 FEET.

SUPERIOR SOUTH CENTRAL 11346 11440 11520 12530 12540 11546.
ISOLATED THUNDERSTORMS THROUGH EARLY THIS EVENING. SCATTERED SHOWERS
LATE THIS EVENING THROUGH MONDAY MORNING. WAVES 2 TO 6 FEET.

SUPERIOR EAST...GALE WARNING IN EFFECT...11346 11356 11456 11440
13530 11546. SLIGHT CHANCE OF THUNDERSTORMS THROUGH LATE THIS EVENING.
SCATTERED SHOWERS LATE TONIGHT THROUGH EARLY MONDAY AFTERNOON. WAVES
3 TO 8 FEET.

$$

KEC


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