Great Lakes Forecast
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FZUS63 KMQT 201951
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
351 PM EDT TUE SEP 20 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...HIGH PRESSURE OF 30.2 INCHES CENTERED OVER LOWER
MICHIGAN WILL REACH NEW YORK STATE WEDNESDAY MORNING...LEAVING A
30.0 INCH RIDGE OVER LAKE SUPERIOR. AS THE RIDGE MOVES TO THE
EAST...A 29.9 INCH LOW PRESSURE TROUGH WILL MOVE INTO THE UPPER
GREAT LAKES WEDNESDAY NIGHT INTO THURSDAY. A 30.2 INCH HIGH PRESSURE
RIDGE OVER OVER MANITOBA ON THURSDAY WILL BUILD TO 30.4 INCHES OVER
WESTERN ONTARIO SATURDAY AND MOVE OVER HUDSON BAY SUNDAY. A 29.6
INCH LOW PRESSURE OVER THE CENTRAL PLAINS FRIDAY NIGHT WILL WEAKEN
TO 29.8 INCHES OVER THE NORTHERN PLAINS SUNDAY.

LSZ162-210400-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
351 PM EDT TUE SEP 20 2016 /251 PM CDT TUE SEP 20 2016/

.LATE THIS AFTERNOON...SOUTHWEST WINDS 10 TO 20 KNOTS. A SLIGHT
CHANCE OF SHOWERS. WAVES 2 TO 4 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER MIDNIGHT.
WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST BY MID
AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF
SHOWERS. WAVES BUILDING TO 2 TO 4 FEET.
.THURSDAY...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS. WAVES
2 TO 4 FEET.
.THURSDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING
TO 2 TO 4 FEET.
.FRIDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A
CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ263-210400-
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-
351 PM EDT TUE SEP 20 2016

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF SHOWERS. WAVES 3 TO 5 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SHOWERS BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF
SHOWERS. WAVES BUILDING TO 2 TO 4 FEET.
.THURSDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES 2 TO
4 FEET.
.THURSDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES 2 TO 4 FEET.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS. WAVES 2 TO 4 FEET.
.FRIDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. A CHANCE
OF SHOWERS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A
CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ264-210400-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
351 PM EDT TUE SEP 20 2016

.LATE THIS AFTERNOON...WEST WINDS 15 TO 25 KNOTS. WAVES 3 TO
5 FEET.
.TONIGHT...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
.THURSDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.FRIDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. A CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO 3 FEET...
THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ265-210400-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
351 PM EDT TUE SEP 20 2016

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO
CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS BY MID AFTERNOON.
WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO
3 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS VEERING EAST
AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS. A CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO 3 FEET...
THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-210400-
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-
351 PM EDT TUE SEP 20 2016

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. WAVES 3 TO
6 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS VEERING EAST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES BUILDING TO 2 TO
4 FEET.
.FRIDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. A CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ267-210400-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
351 PM EDT TUE SEP 20 2016

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. WAVES 2 TO
4 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO 1 TO
3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING EAST AFTER
MIDNIGHT. A CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO
3 FEET.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. A CHANCE OF SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ261-210400-
MAFOR 2021/
SUPERIOR WEST 11520 11620 11610 11700 11800 11110 12120. CHANCE
OF SHOWERS EARLY THIS EVENING. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 14620 11710 13810. WAVES 1 TO 5 FEET.

SUPERIOR SOUTH CENTRAL 11610 12620 11610 11700 11800 12110. WAVES
1 TO 3 FEET.

SUPERIOR EAST 11510 12620 11610 11710 11700 11800 11810. WAVES 1
TO 5 FEET.

$$

JS



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