Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 010155
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
955 PM EDT TUE SEP 30 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...HIGH PRESSURE OF 30.2 INCHES OVER QUEBEC WILL MOVE EAST
TO THE CANADIAN MARITIMES BY WEDNESDAY EVENING. MEANWHILE...LOW
PRESSURE OF 29.4 INCHES OVER CENTRAL NORTH DAKOTA WILL LIFT NORTH TO
SOUTHERN MANITOBA BY WEDNESDAY MORNING AND TO HUDSON BAY THURSDAY
MORNING. A 29.7 INCH TROUGH ASSOCIATED WITH THE LOW WILL MOVE
EAST...REACHING LAKE SUPERIOR 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.

LSZ162-011000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
955 PM EDT TUE SEP 30 2014 /855 PM CDT TUE SEP 30 2014/

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

$$

LSZ263-011000-
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-
955 PM EDT TUE SEP 30 2014

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

$$

LSZ264-011000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
955 PM EDT TUE SEP 30 2014

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

$$

LSZ265-011000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
955 PM EDT TUE SEP 30 2014

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

$$

LSZ266-011000-
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-
955 PM EDT TUE SEP 30 2014

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

$$

LSZ267-011000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
955 PM EDT TUE SEP 30 2014

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

$$
LSZ261-011000-
MAFOR 0103/
SUPERIOR WEST 11220 11320 12410 12310 12306. SLIGHT CHANCE OF RAIN
SHOWERS IN THE MORNING. A SLIGHT CHANCE OF THUNDERSTORMS WEDNESDAY
AFTERNOON AND EVENING. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 14310 13320 11426. WAVES 1 TO 2 FEET
OVERNIGHT. WAVES 2 TO 5 FEET WEDNESDAY AND WEDNESDAY EVENING.

SUPERIOR SOUTH CENTRAL 13310 13320 12420. CHANCE OF RAIN SHOWERS
WEDNESDAY EVENING. WAVES 1 TO 3 FEET OVERNIGHT BUILDING TO 2 TO 4
FEET BY WEDNESDAY EVENING.

SUPERIOR EAST 11200 11300 14310 12320. SLIGHT CHANCE OF RAIN SHOWERS
WEDNESDAY EVENING. WAVES AROUND 1 FOOT OVERNIGHT. WAVES 1 TO 3 FEET
WEDNESDAY AND WEDNESDAY EVENING.

$$

SRF







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