Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 300802
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
402 AM EDT THU MAR 30 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A HIGH PRESSURE RIDGE OF 30.4 INCHES FROM QUEBEC TO
NEW ENGLAND WILL SLOWLY MOVE EAST THROUGH FRIDAY WHILE LOW PRESSURE
OF 29.5 INCHES OVER THE CENTRAL PLAINS TRACKS TO THE MID ATLANTIC
STATES. THE LOW WILL MOVE OFF THE EAST COAST ON SATURDAY WHILE A
LOW PRESSURE TROUGH OF 29.8 INCHES MOVES FROM NORTHERN ONTARIO
ACROSS THE UPPER GREAT LAKES. AS THE TROUGH CROSSES THE LOWER
GREAT LAKES AND NEW ENGLAND SATURDAY NIGHT INTO SUNDAY...A HIGH
PRESSURE RIDGE OF 30.2 INCHES OVER NORTHERN ONTARIO WILL EXPAND
ACROSS THE GREAT LAKES. THIS RIDGE WILL DRIFT OVER THE NORTHEAST
ON MONDAY...AS A 29.4 INCH LOW MOVES FROM THE SOUTHERN PLAINS TO
THE OHIO VALLEY AND LOWER GREAT LAKES.

LSZ162-301615-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
402 AM EDT THU MAR 30 2017 /302 AM CDT THU MAR 30 2017/

.EARLY THIS MORNING...EAST WINDS 5 TO 15 KNOTS. WAVES 1 TO
3 FEET.
.TODAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 2
TO 4 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO 20 KNOTS.
A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES CALM
TO 2 FEET.

$$

LSZ263-301615-
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-
402 AM EDT THU MAR 30 2017

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET BUILDING TO 1 TO 3 FEET.
.TODAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS BY
MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS
THAN 10 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTH. A CHANCE OF
RAIN. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST. A CHANCE OF
RAIN. WAVES CALM TO 2 FEET.

$$

LSZ264-301615-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
402 AM EDT THU MAR 30 2017

.EARLY THIS MORNING...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM
TO 2 FEET BUILDING TO 1 TO 3 FEET.
.TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST LESS
THAN 10 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. RAIN LIKELY. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ265-301615-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
402 AM EDT THU MAR 30 2017

.EARLY THIS MORNING...SOUTHEAST WINDS 15 TO 25 KNOTS. WAVES CALM
TO 2 FEET BUILDING TO 1 TO 3 FEET.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...EAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. RAIN...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A CHANCE
OF RAIN...POSSIBLY MIXED WITH SNOW. WAVES CALM TO 2 FEET.

$$

LSZ266-301615-
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-
402 AM EDT THU MAR 30 2017

.EARLY THIS MORNING...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM
TO 2 FEET BUILDING TO 1 TO 3 FEET.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 2 TO
4 FEET...THEN BUILDING TO 3 TO 5 FEET.
.FRIDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW. WAVES
BUILDING TO 1 TO 3 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. A CHANCE OF SNOW. A CHANCE OF RAIN. WAVES SUBSIDING TO
CALM TO 2 FEET.

$$

LSZ267-301615-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
402 AM EDT THU MAR 30 2017

.EARLY THIS MORNING...SOUTHEAST WINDS 15 TO 25 KNOTS. WAVES CALM
TO 2 FEET BUILDING TO 1 TO 3 FEET.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 1 TO
3 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. WAVES BUILDING
TO 2 TO 4 FEET.
.FRIDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW THROUGH EARLY
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING EAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW. WAVES CALM
TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A
CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW. WAVES CALM TO 2 FEET.

$$

LSZ261-301615-
MAFOR 3009/
SUPERIOR WEST 13210 11120 12130 11230 11120. WAVES 2 TO 6 FEET.

SUPERIOR NORTH CENTRAL 14320 12230 12220. WAVES 2 TO 5 FEET.

SUPERIOR SOUTH CENTRAL 13320 11220 12230 12220. WAVES 2 TO 5 FEET.

SUPERIOR EAST 11320 12330 12230 12220 11230. WAVES 1 TO 5 FEET.

$$

JLA


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