Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 101358
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
958 AM EDT WED SEP 10 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.4 INCH LOW PRESSURE OVER SOUTHWEST WISCONSIN WILL
REACH NORTHERN LOWER MICHIGAN THIS EVENING...AND SOUTHWEST QUEBEC
THURSDAY MORNING. MEANWHILE...A 30.6 INCH HIGH PRESSURE CENTER WILL
BUILD OVER MONTANA WITH A RIDGE EXTENDING EASTWARD TOWARD THE UPPER
GREAT LAKES. AS THE HIGH CENTER SINKS SOUTHEAST INTO CENTRAL PLAINS
ON FRIDAY AND INTO THE MID MISSISSIPPI RIVER VALLEY ON SATURDAY...A
LOW PRESSURE TROUGH AVERAGING 30.2 INCHES WILL CROSS THE LOWER GREAT
LAKES TO THE SOUTH OF THE LINGERING RIDGE AXIS ACROSS LAKE SUPERIOR.
AFTER THE TROUGH MOVES NORTHEAST INTO NEW ENGLAND ON SUNDAY...LOOK
FOR THE HIGH TO EXPAND INTO THE LOWER LAKES WHILE A LOW PRESSURE
TROUGH AVERAGING 30.1 INCHES APPROACHES LAKE SUPERIOR FROM THE
NORTHWEST.

LSZ162-102200-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
958 AM EDT WED SEP 10 2014 /858 AM CDT WED SEP 10 2014/

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.REST OF TODAY...NORTHEAST GALES TO 40 KNOTS. RAIN THROUGH LATE
MORNING...THEN A CHANCE OF RAIN. WAVES 11 TO 15 FEET BUILDING TO 12
TO 17 FEET.
.TONIGHT...NORTH GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS BY
LATE EVENING. A SLIGHT CHANCE OF RAIN THROUGH MIDNIGHT. WAVES
SUBSIDING TO 8 TO 11 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...WEST WINDS LESS THAN 10 KNOTS BECOMING NORTH
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ263-102200-
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 AM EDT WED SEP 10 2014

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NORTHEAST GALES TO 45 KNOTS. RAIN. WAVES 11 TO
15 FEET BUILDING TO 12 TO 17 FEET.
.TONIGHT...NORTH GALES TO 40 KNOTS. A CHANCE OF RAIN. WAVES
SUBSIDING TO 8 TO 11 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS
THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST. WAVES
BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE
OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ264-102200-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
958 AM EDT WED SEP 10 2014

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NORTHEAST GALES TO 45 KNOTS. RAIN. WAVES 10 TO
14 FEET BUILDING TO 12 TO 17 FEET.
.TONIGHT...NORTH GALES TO 40 KNOTS. A CHANCE OF RAIN. WAVES
SUBSIDING TO 8 TO 11 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS
THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST. WAVES
BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.

$$

LSZ265-102200-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
958 AM EDT WED SEP 10 2014

...GALE WARNING IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH
LATE TONIGHT...

.REST OF TODAY...NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
GALES TO 35 KNOTS BY MID AFTERNOON. PATCHY FOG. ISOLATED
THUNDERSTORMS THROUGH LATE MORNING. RAIN. WAVES 7 TO 10 FEET
BUILDING TO 12 TO 17 FEET.
.TONIGHT...NORTH GALES TO 40 KNOTS. RAIN THROUGH MIDNIGHT...THEN
A CHANCE OF RAIN. WAVES SUBSIDING TO 10 TO 14 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON. WAVES SUBSIDING TO 4 TO 7 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-102200-
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 AM EDT WED SEP 10 2014

...GALE WARNING IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH
LATE TONIGHT...

.REST OF TODAY...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO
GALES TO 35 KNOTS BY MID AFTERNOON. PATCHY FOG. ISOLATED
THUNDERSTORMS BY LATE MORNING. RAIN. WAVES 9 TO 12 FEET BUILDING
TO 12 TO 17 FEET.
.TONIGHT...NORTH GALES TO 40 KNOTS. RAIN LIKELY THROUGH
MIDNIGHT...THEN A CHANCE OF RAIN. WAVES SUBSIDING TO 10 TO 14 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS
BY MID AFTERNOON. A FEW GALE FORCE GUSTS TO 35 KNOTS IN THE MORNING.
A SLIGHT CHANCE OF RAIN SHOWERS THROUGH EARLY AFTERNOON. WAVES
SUBSIDING TO 4 TO 7 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST. WAVES
BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.

$$

LSZ267-102200-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
958 AM EDT WED SEP 10 2014

...GALE WARNING IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH
THURSDAY MORNING...

.REST OF TODAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST
20 TO 30 KNOTS BY MID AFTERNOON. PATCHY FOG. ISOLATED
THUNDERSTORMS BY LATE MORNING. RAIN. WAVES 3 TO 6 FEET BUILDING
TO 8 TO 11 FEET.
.TONIGHT...NORTH GALES TO 35 KNOTS. RAIN THROUGH MIDNIGHT...THEN
A CHANCE OF RAIN. WAVES BUILDING TO 10 TO 14 FEET...THEN SUBSIDING
TO 6 TO 9 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS
THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 5 TO 8 FEET...THEN
BUILDING TO 6 TO 9 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.SATURDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST.
WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$
LSZ261-102200-
MAFOR 1015/
SUPERIOR WEST...GALE WARNING IN EFFECT...
12166 11160 12850 12840 11830. CHANCE OF RAIN THIS EVENING. WAVES 13
TO 17 FEET THIS AFTERNOON. WAVES 12 TO 16 FEET TONIGHT. WAVES 8 TO 11
FEET THURSDAY MORNING.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...
14166 11860 11850 12840. CHANCE OF RAIN OVERNIGHT AND THURSDAY
MORNING. WAVES 12 TO 16 FEET THIS AFTERNOON. WAVES 13 TO 17 FEET
TONIGHT. WAVES 8 TO 11 FEET THURSDAY MORNING.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...
12146 11156 12856 11850 12840. PATCHY FOG THIS AFTERNOON. CHANCE OF
RAIN SHOWERS THURSDAY MORNING. WAVES 10 TO 14 FEET THIS AFTERNOON.
WAVES 14 TO 18 FEET TONIGHT. WAVES 10 TO 14 FEET THURSDAY MORNING.

SUPERIOR EAST...GALE WARNING IN EFFECT...12146 12156 11856 13840.
PATCHY FOG THIS AFTERNOON AND EVENING. ISOLATED THUNDERSTORMS THIS
AFTERNOON. CHANCE OF RAIN OVERNIGHT AND THURSDAY MORNING. WAVES 5 TO
8 FEET BUILDING TO 7 TO 10 FEET THIS AFTERNOON. WAVES 10 TO 13 FEET
TONIGHT. WAVES 7 TO 10 FEET THURSDAY MORNING.

$$

PETRO




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