Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 192000
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
400 PM EDT FRI SEP 19 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.5 INCH TROUGH FROM ONTARIO TO NORTH DAKOTA WILL
MOVE OVER THE UPPER GREAT LAKES TONIGHT AND SATURDAY MORNING. AS THE
TROUGH SHIFTS INTO NORTHEASTERN QUEBEC SUNDAY NIGHT INTO MONDAY...
HIGH PRESSURE OF 30.2 INCHES OVER THE NORTHERN PLAINS WILL MOVE OVER
THE MID MISSISSIPPI VALLEY. A 29.7 INCH LOW PRESSURE OVER NORTHERN
ONTARIO MONDAY AFTERNOON WILL DISSIPATE OVER EASTERN ONTARIO TUESDAY
MORNING AS HIGH PRESSURE OVER THE OHIO VALLEY BUILDS OVER THE GREAT
LAKES. EXPECT THIS HIGH PRESSURE TO MOVE OVER NEW ENGLAND WEDNESDAY.

LSZ162-200400-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
400 PM EDT FRI SEP 19 2014 /300 PM CDT FRI SEP 19 2014/

.LATE THIS AFTERNOON...SOUTHWEST WINDS 15 TO 25 KNOTS. SCATTERED
SHOWERS. WAVES 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. SCATTERED SHOWERS AND
THUNDERSTORMS. AREAS OF FOG AFTER MIDNIGHT. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH EARLY
AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING
TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO 15 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-200400-
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-
400 PM EDT FRI SEP 19 2014

.LATE THIS AFTERNOON...SOUTH WINDS 15 TO 25 KNOTS. NUMEROUS
SHOWERS. WAVES 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. SCATTERED SHOWERS AND THUNDERSTORMS.
AREAS OF FOG AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. A SLIGHT CHANCE OF SHOWERS THROUGH EARLY AFTERNOON.
WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTH AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.

$$

LSZ264-200400-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
400 PM EDT FRI SEP 19 2014

.LATE THIS AFTERNOON...SOUTH WINDS 15 TO 25 KNOTS. NUMEROUS
SHOWERS. WAVES 4 TO 8 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. NUMEROUS SHOWERS
THROUGH MIDNIGHT. SCATTERED THUNDERSTORMS. A CHANCE OF SHOWERS
AFTER MIDNIGHT. AREAS OF FOG AFTER MIDNIGHT. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. AREAS OF FOG THROUGH MIDNIGHT. A SLIGHT CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.

$$

LSZ265-200400-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
400 PM EDT FRI SEP 19 2014

.LATE THIS AFTERNOON...SOUTH WINDS 15 TO 25 KNOTS. SCATTERED
SHOWERS. WAVES 3 TO 6 FEET SUBSIDING TO 2 TO 4 FEET.
.TONIGHT...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. SCATTERED SHOWERS AND THUNDERSTORMS.
PATCHY FOG AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST BY MID
AFTERNOON. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO
CALM TO 2 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING EAST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH BY MID
AFTERNOON. A SLIGHT CHANCE OF SHOWERS THROUGH EARLY AFTERNOON.
WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST AFTER
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 BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET...
THEN SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTH. WAVES CALM TO
2 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-200400-
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-
400 PM EDT FRI SEP 19 2014

.LATE THIS AFTERNOON...SOUTH WINDS 20 TO 30 KNOTS. SCATTERED
SHOWERS. WAVES 6 TO 9 FEET SUBSIDING TO 4 TO 7 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. NUMEROUS SHOWERS THROUGH MIDNIGHT.
SCATTERED THUNDERSTORMS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
AREAS OF FOG AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 6 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES SUBSIDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH BY MID
AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A SLIGHT CHANCE OF
RAIN SHOWERS THROUGH EARLY AFTERNOON. WAVES BUILDING TO 1 TO
3 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.

$$

LSZ267-200400-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
400 PM EDT FRI SEP 19 2014

.LATE THIS AFTERNOON...SOUTH WINDS 20 TO 30 KNOTS. SCATTERED
SHOWERS. WAVES 3 TO 5 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY AND SCATTERED
THUNDERSTORMS. WAVES BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO
2 TO 4 FEET.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH
5 TO 15 KNOTS AFTER MIDNIGHT. AREAS OF FOG. A SLIGHT CHANCE OF
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...NORTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF RAIN
SHOWERS THROUGH EARLY AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO
4 FEET.
.TUESDAY...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. WAVES
CALM TO 2 FEET.

$$

LSZ261-200400-
MAFOR 1921/
SUPERIOR WEST 11536 11520 12510 11613 12623 11620. AREAS OF FOG
OVERNIGHT. SCATTERED RAIN SHOWERS WITH A CHANCE OF THUNDERSTORMS
TONIGHT. CHANCE OF RAIN SHOWERS AND THUNDERSTORMS SATURDAY. WAVES 1
TO 3 FEET.

SUPERIOR NORTH CENTRAL 11446 11426 11516 12513 11613 12723. AREAS OF
FOG OVERNIGHT. CHANCE OF RAIN SHOWERS AND THUNDERSTORMS OVERNIGHT
AND SATURDAY. WAVES 5 TO 8 FEET SUBSIDING TO 1 TO 3 FEET TONIGHT AND
SATURDAY.

SUPERIOR SOUTH CENTRAL 12440 11530 11520 11523 11510 12623. AREAS OF
FOG OVERNIGHT. SCATTERED RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS
TONIGHT. CHANCE OF RAIN SHOWERS AND THUNDERSTORMS SATURDAY. WAVES 1
TO 5 FEET.

SUPERIOR EAST 11440 11446 11436 11536 12520 11523 11623. SCATTERED
RAIN SHOWERS LATE THIS AFTERNOON. A CHANCE OF THUNDERSTORMS TONIGHT.
CHANCE OF RAIN SHOWERS AND THUNDERSTORMS SATURDAY. WAVES 4 TO 7 FEET
SUBSIDING TO 2 TO 4 FEET SATURDAY.

$$

PETRO





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