Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 250158
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
958 PM EDT SAT SEP 24 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.2 INCH HIGH PRESSURE SYSTEM STRETCHING FROM HUDSON
BAY THROUGH LOWER MICHIGAN WILL DRIFT EASTWARD TO CENTRAL QUEBEC
THROUGH SUNDAY AS A 29.5 INCH LOW PRESSURE TRACKS FROM NORTH DAKOTA
TO NORTHWEST ONTARIO. EXPECT THIS LOW TO THEN SHIFT EASTWARD ACROSS
ONTARIO THROUGH MONDAY AND DRAG A LOW PRESSURE TROUGH AVERAGING 29.8
INCHES ACROSS LAKE SUPERIOR ON SUNDAY NIGHT. THE LOW WILL THEN DRIFT
FROM JUST NORTHEAST OF LAKE SUPERIOR TO THE LOWER GREAT LAKES MONDAY
NIGHT THROUGH WEDNESDAY WHILE WEAKENING TO 29.8 INCHES. HIGH PRESSURE
OF 30.4 INCHES WILL SETTLE ACROSS THE UPPER MISSISSIPPI VALLEY AND
UPPER GREAT LAKES FOR THURSDAY.

LSZ162-251000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
958 PM EDT SAT SEP 24 2016 /858 PM CDT SAT SEP 24 2016/

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.
WAVES 1 TO 3 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH BY MID
AFTERNOON. SHOWERS LIKELY THROUGH EARLY AFTERNOON...THEN A CHANCE OF
SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS. WAVES 1 TO 3 FEET.
.SUNDAY NIGHT...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES BUILDING TO
3 TO 5 FEET.
.MONDAY...WEST GALES TO 35 KNOTS. A CHANCE OF SHOWERS. WAVES
BUILDING TO 3 TO 6 FEET.
.MONDAY NIGHT...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO
3 TO 5 FEET.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING WEST. WAVES CALM
TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM TO
2 FEET.

$$

LSZ263-251000-
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-
958 PM EDT SAT SEP 24 2016

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES 2 TO
4 FEET BUILDING TO 3 TO 5 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH BY MID
AFTERNOON. SHOWERS LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS.
WAVES BUILDING TO 4 TO 7 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET...THEN BUILDING TO 3 TO 6 FEET.
.MONDAY...WEST GALES TO 40 KNOTS. SHOWERS LIKELY. WAVES BUILDING
TO 5 TO 8 FEET.
.MONDAY NIGHT...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY THROUGH MIDNIGHT...THEN A
CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING WEST. WAVES CALM
TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM TO
2 FEET.

$$

LSZ264-251000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
958 PM EDT SAT SEP 24 2016

.REST OF TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH
AFTER MIDNIGHT. WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET.
.SUNDAY...SOUTHEAST WINDS 20 TO 30 KNOTS. SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 6 TO 10 FEET.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO
2 TO 4 FEET.
.MONDAY...WEST GALES TO 40 KNOTS. A CHANCE OF SHOWERS THROUGH
EARLY AFTERNOON...THEN SHOWERS LIKELY BY MID AFTERNOON. WAVES
BUILDING TO 4 TO 7 FEET.
.MONDAY NIGHT...NORTHWEST GALES TO 40 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY. WAVES 4 TO 8 FEET.
.TUESDAY...NORTHWEST GALES TO 35 KNOTS VEERING NORTH BY MID
AFTERNOON. SHOWERS LIKELY. WAVES SUBSIDING TO 3 TO 5 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO
1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.

$$

LSZ265-251000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
958 PM EDT SAT SEP 24 2016

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 4 TO 8 FEET.
.SUNDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO
1 TO 3 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON...THEN SHOWERS LIKELY BY MID AFTERNOON. WAVES BUILDING
TO 3 TO 6 FEET.
.MONDAY NIGHT...WEST GALES TO 40 KNOTS BECOMING NORTHWEST GALES
TO 35 KNOTS AFTER MIDNIGHT. SHOWERS. WAVES BUILDING TO 4 TO
8 FEET.
.TUESDAY...NORTHWEST GALES TO 35 KNOTS. SHOWERS LIKELY. WAVES
SUBSIDING TO 3 TO 5 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 AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.

$$

LSZ266-251000-
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-
958 PM EDT SAT SEP 24 2016

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
.SUNDAY...SOUTH WINDS 20 TO 30 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY AFTERNOON...THEN SHOWERS
LIKELY. A SLIGHT CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 6 TO 9
FEET.
.SUNDAY NIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS AFTER MIDNIGHT. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT...THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON...THEN SHOWERS LIKELY BY MID AFTERNOON. WAVES BUILDING
TO 4 TO 7 FEET.
.MONDAY NIGHT...WEST GALES TO 40 KNOTS BECOMING NORTHWEST GALES
TO 35 KNOTS AFTER MIDNIGHT. SHOWERS. WAVES BUILDING TO 7 TO
10 FEET...THEN SUBSIDING TO 5 TO 8 FEET.
.TUESDAY...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS BY MID AFTERNOON. SHOWERS LIKELY. WAVES SUBSIDING TO
3 TO 6 FEET...THEN BUILDING TO 4 TO 7 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO
2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.

$$

LSZ267-251000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
958 PM EDT SAT SEP 24 2016

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON. A SLIGHT CHANCE OF THUNDERSTORMS. SHOWERS LIKELY BY
MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...SOUTHEAST GALES TO 35 KNOTS BECOMING SOUTH 20 TO
30 KNOTS AFTER MIDNIGHT. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO
1 TO 3 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. SHOWERS LIKELY. WAVES BUILDING TO 3 TO
5 FEET.
.MONDAY NIGHT...WEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. SHOWERS. WAVES BUILDING TO 5 TO 9 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. SHOWERS THROUGH EARLY AFTERNOON...THEN
A CHANCE OF SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO 3 TO
5 FEET.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$
LSZ261-251000-
MAFOR 2503/
SUPERIOR WEST 13320 12326 11420 11510 11520. CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS THROUGH SUNDAY MORNING AND AGAIN
SUNDAY AFTERNOON AND EARLY EVENING. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 11330 11420 11320 11330 13346 11430.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS SUNDAY MORNING.
SLIGHT CHANCE OF THUNDERSTORMS SUNDAY AFTERNOON AND EARLY EVENING. A
CHANCE OF SHOWERS LATE SUNDAY EVENING. WAVES 2 TO 5 FEET OVERNIGHT
BUILDING TO 5 TO 10 FEET SUNDAY AND SUNDAY EVENING.

SUPERIOR SOUTH CENTRAL 12420 11320 11330 12346 11446 11436.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS SUNDAY MORNING.
SLIGHT CHANCE OF THUNDERSTORMS SUNDAY AFTERNOON AND SUNDAY EVENING.
WAVES 2 TO 7 FEET.

SUPERIOR EAST 11310 13320 11330 13346. CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS SUNDAY AFTERNOON. SLIGHT CHANCE OF
THUNDERSTORMS SUNDAY EVENING. WAVES 1 TO 6 FEET.

$$

KEC



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