Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 180201
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1001 PM EDT WED SEP 17 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.3 INCH HIGH PRESSURE OVER NORTHERN ONTARIO WILL MOVE
SOUTHEAST AND BECOME CENTERED JUST NORTHEAST OF LAKE SUPERIOR BY
THURSDAY MORNING. THE HIGH WILL MOVE TO NEW ENGLAND ON FRIDAY BEFORE
A 29.5 INCH TROUGH TRACKS INTO NORTHWEST ONTARIO LATE FRIDAY. ANOTHER
AREA OF LOW PRESSURE AVERAGING 29.6 INCHES WILL DEVELOP OVER THE
NORTHERN PLAINS FRIDAY NIGHT. THIS LOW WILL DEEPEN TO 29.5 INCHES AS
IT SHIFTS OVER THE UPPER GREAT LAKES REGION LATE SATURDAY INTO
SATURDAY NIGHT AND THEN INTO QUEBEC ON SUNDAY. AS THE LOW SHIFTS INTO
NORTHEASTERN QUEBEC SUNDAY NIGHT INTO MONDAY...HIGH PRESSURE OF 30.2
INCHES WILL BUILD ACROSS THE NORTHERN PLAINS AND INTO THE UPPER GREAT
LAKES REGION.

LSZ162-181015-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1001 PM EDT WED SEP 17 2014 /901 PM CDT WED SEP 17 2014/

.REST OF TONIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES 3 TO 5 FEET
SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
2 TO 4 FEET.
.FRIDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS BY MID AFTERNOON. SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO
1 TO 3 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO 15 KNOTS.
WAVES CALM TO 2 FEET.

$$

LSZ263-181015-
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-
1001 PM EDT WED SEP 17 2014

.REST OF TONIGHT...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST
AFTER MIDNIGHT. WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...SOUTH WINDS 15 TO 25 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY AFTERNOON...THEN SHOWERS
LIKELY. A SLIGHT CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 3 TO 5
FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES 1 TO
3 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BACKING WEST. WAVES
SUBSIDING TO CALM TO 2 FEET.

$$

LSZ264-181015-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1001 PM EDT WED SEP 17 2014

.REST OF TONIGHT...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST
AFTER MIDNIGHT. WAVES 1 TO 3 FEET SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH
AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET.
.FRIDAY...SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS BY
MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY AFTERNOON...THEN
SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO 3 TO 6
FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. A CHANCE
OF RAIN SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ265-181015-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1001 PM EDT WED SEP 17 2014

.REST OF TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING EAST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET.
.FRIDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS THROUGH
EARLY AFTERNOON...THEN SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS BY MID AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET...
THEN BUILDING TO 3 TO 5 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES
CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES
SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-181015-
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-
1001 PM EDT WED SEP 17 2014

.REST OF TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET.
.FRIDAY...SOUTH WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF SHOWERS
THROUGH EARLY AFTERNOON...THEN SHOWERS LIKELY BY MID AFTERNOON.
WAVES BUILDING TO 4 TO 7 FEET.
.FRIDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY THROUGH MIDNIGHT...
THEN A CHANCE OF SHOWERS. A CHANCE OF THUNDERSTORMS. WAVES SUBSIDING
TO 1 TO 3 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY AFTERNOON...THEN SHOWERS
LIKELY. A CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2
FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES BUILDING TO
2 TO 4 FEET.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. WAVES
BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ267-181015-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1001 PM EDT WED SEP 17 2014

.REST OF TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON...THEN SHOWERS LIKELY BY MID AFTERNOON. WAVES BUILDING
TO 3 TO 6 FEET.
.FRIDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY THROUGH MIDNIGHT...
THEN A CHANCE OF SHOWERS. A CHANCE OF THUNDERSTORMS. WAVES SUBSIDING
TO 1 TO 3 FEET.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS
THROUGH EARLY AFTERNOON...THEN SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. SHOWERS LIKELY.
WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. A CHANCE
OF RAIN SHOWERS. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING
TO 2 TO 4 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$
LSZ261-181015-
MAFOR 1803/
SUPERIOR WEST 15220 11220 11210. WAVES 2 TO 4 FEET.

SUPERIOR NORTH CENTRAL 12120 11210 11310 13320 11330. WAVES 1 TO
3 FEET.

SUPERIOR SOUTH CENTRAL 11130 11120 12210 11320 13330. WAVES 2 TO
4 FEET.

SUPERIOR EAST 11130 12120 14210 11220. WAVES CALM TO 4 FEET.

$$

PETRO




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