Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 011352
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
952 AM EDT WED OCT 1 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...HIGH PRESSURE OF 30.3 INCHES EXITING ACROSS QUEBEC WILL
MOVE EAST TO THE CANADIAN MARITIMES THIS EVENING AS LOW PRESSURE OF
29.4 INCHES OVER SOUTHERN MANITOBA LIFTS TO HUDSON BAY BY THURSDAY
MORNING. A 29.7 INCH TROUGH ASSOCIATED WITH THE LOW WILL MOVE
EAST...REACHING LAKE SUPERIOR ON THURSDAY. EXPECT A 29.4 INCH LOW
PRESSURE TO FORM ALONG THIS TROUGH OVER THE UPPER MISSISSIPPI VALLEY
THURSDAY EVENING AND THEN DEEPEN TO 29.2 INCHES AS IT LIFTS NORTHEAST
INTO NORTHERN ONTARIO FRIDAY AND TO HUDSON BAY FRIDAY NIGHT. IN ITS
WAKE...HIGH PRESSURE OF 30.2 INCHES OVER THE WESTERN PLAINS FRIDAY
AFTERNOON WILL SETTLE OVER THE LOWER MISSISSIPPI VALLEY SATURDAY INTO
SUNDAY AS A 29.5 INCH TROUGH EXTENDING FROM THE HUDSON BAY LOW
LINGERS OVER NORTHERN ONTARIO.

LSZ162-012200-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
952 AM EDT WED OCT 1 2014 /852 AM CDT WED OCT 1 2014/

.REST OF TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF
SHOWERS...THEN SHOWERS LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS
BY MID AFTERNOON. WAVES 1 TO 3 FEET SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS THROUGH MIDNIGHT. WAVES CALM
TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY. WAVES BUILDING TO 2 TO
4 FEET.
.FRIDAY...NORTHWEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. SHOWERS LIKELY. WAVES BUILDING TO 5 TO
8 FEET.
.FRIDAY NIGHT...NORTHWEST GALES TO 40 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES BUILDING TO 6 TO 9 FEET.
.SATURDAY...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS. WAVES SUBSIDING TO 3 TO 5 FEET.
.SUNDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. WAVES SUBSIDING TO 2 TO 4 FEET.

$$

LSZ263-012200-
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-
952 AM EDT WED OCT 1 2014

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST
5 TO 15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS...THEN
SHOWERS LIKELY BY MID AFTERNOON. WAVES 1 TO 3 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT. A CHANCE OF SHOWERS. WAVES 1 TO
3 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. A SLIGHT CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY. WAVES BUILDING TO 2 TO
4 FEET.
.FRIDAY...NORTHWEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. SHOWERS LIKELY. WAVES BUILDING TO 6 TO
9 FEET.
.FRIDAY NIGHT...NORTHWEST GALES TO 40 KNOTS. RAIN SHOWERS LIKELY.
WAVES BUILDING TO 8 TO 11 FEET.
.SATURDAY...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 3 TO
6 FEET.
.SUNDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. WAVES SUBSIDING TO 2 TO 4 FEET.

$$

LSZ264-012200-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
952 AM EDT WED OCT 1 2014

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST BY
MID AFTERNOON. A CHANCE OF SHOWERS BY MID AFTERNOON. WAVES 1 TO
3 FEET BUILDING TO 2 TO 4 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT...THEN A SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO
2 TO 4 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. A SLIGHT CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO
40 KNOTS BY MID AFTERNOON. SHOWERS LIKELY THROUGH EARLY
AFTERNOON...THEN A CHANCE OF SHOWERS. WAVES BUILDING TO 5 TO 8 FEET.
.FRIDAY NIGHT...NORTHWEST GALES TO 40 KNOTS. RAIN SHOWERS LIKELY.
WAVES BUILDING TO 8 TO 11 FEET.
.SATURDAY...NORTHWEST GALES TO 40 KNOTS DIMINISHING TO 20 TO
30 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 4 TO
7 FEET.
.SUNDAY...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST. WAVES
SUBSIDING TO 2 TO 4 FEET.

$$

LSZ265-012200-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
952 AM EDT WED OCT 1 2014

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SHOWERS BY MID AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY THROUGH MIDNIGHT...THEN A
CHANCE OF SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS. WAVES SUBSIDING
TO 1 TO 3 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST LESS
THAN 10 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST GALES TO
35 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES BUILDING TO 4
TO 7 FEET.
.FRIDAY NIGHT...NORTHWEST GALES TO 35 KNOTS. RAIN SHOWERS LIKELY.
WAVES BUILDING TO 6 TO 9 FEET.
.SATURDAY...NORTHWEST GALES TO 40 KNOTS. RAIN SHOWERS LIKELY...
THEN A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 7 TO 10 FEET...
THEN SUBSIDING TO 3 TO 6 FEET.
.SUNDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.

$$

LSZ266-012200-
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-
952 AM EDT WED OCT 1 2014

.REST OF TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF SHOWERS BY MID AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 3 TO
5 FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO 2 TO 4 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS. A SLIGHT
CHANCE OF THUNDERSTORMS THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO
CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST
10 TO 20 KNOTS AFTER MIDNIGHT. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. SHOWERS LIKELY THROUGH EARLY AFTERNOON...THEN A
CHANCE OF SHOWERS. WAVES BUILDING TO 4 TO 7 FEET.
.FRIDAY NIGHT...NORTHWEST GALES TO 35 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES BUILDING TO 7 TO 10 FEET.
.SATURDAY...NORTHWEST GALES TO 40 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES BUILDING TO 9 TO 12 FEET...THEN SUBSIDING TO 5 TO
8 FEET.
.SUNDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 3 TO
5 FEET.

$$

LSZ267-012200-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
952 AM EDT WED OCT 1 2014

.REST OF TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET BUILDING TO 1 TO 3 FEET.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH AFTER
MIDNIGHT. A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 1 TO 3 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 1 TO 3 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...SOUTH WINDS 20 TO 30 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. SHOWERS LIKELY. WAVES BUILDING TO 3 TO 6 FEET.
.FRIDAY NIGHT...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY. WAVES BUILDING TO
7 TO 10 FEET.
.SATURDAY...WEST GALES TO 40 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS. RAIN SHOWERS LIKELY. WAVES BUILDING TO 9 TO 12 FEET...
THEN SUBSIDING TO 5 TO 8 FEET.
.SUNDAY...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES SUBSIDING TO 3 TO 5 FEET.

$$
LSZ261-012200-
MAFOR 0115/
SUPERIOR WEST 11310 11316 11306 11300 12400 12500. SLIGHT CHANCE OF
RAIN SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON. A
SLIGHT CHANCE OF RAIN SHOWERS OVERNIGHT. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 13320 12426 13410. SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN SHOWERS OVERNIGHT.
WAVES 1 TO 4 FEET.

SUPERIOR SOUTH CENTRAL 11320 13420 11426 11420 12410. A SLIGHT
CHANCE OF THUNDERSTORMS TONIGHT. CHANCE OF RAIN SHOWERS THURSDAY
MORNING. WAVES 1 TO 4 FEET.

SUPERIOR EAST 11320 11310 13320 11416 11420 11410. CHANCE OF RAIN
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT THROUGH
THURSDAY MORNING. WAVES 2 TO 4 FEET.

$$

KF




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