Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 240753
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
353 AM EDT FRI MAR 24 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.9 INCH TROUGH WILL MOVE ACROSS THE UPPER GREAT
LAKES THIS MORNING AND INTO THE NEW ENGLAND STATES THIS
EVENING. AT THE SAME TIME...A 29.5 INCH LOW WILL MOVE INTO THE
CENTRAL PLAINS AS 30.5 INCH HIGH PRESSURE BUILDS OVER NORTHERN
ONTARIO. THE HIGH WILL BUILD TO 30.6 INCHES OVER JAMES BAY
SATURDAY AFTERNOON AS THE LOW WEAKENS TO 29.7 INCHES OVER WESTERN
ILLINOIS. THE HIGH PRESSURE WILL THEN MOVE TO NEW ENGLAND
SATURDAY NIGHT AND SUNDAY WHILE THE LOW OVER ILLINOIS WEAKENS
FURTHER. A 29.7 INCH TROUGH WILL THEN MOVE THROUGH THE LOWER
GREAT LAKES MONDAY NIGHT AND TUESDAY AS A 30.2 INCH RIDGE BUILDS
OVER THE WESTERN GREAT LAKES TUESDAY.

LSZ162-241600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
353 AM EDT FRI MAR 24 2017 /253 AM CDT FRI MAR 24 2017/

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN.
WAVES CALM TO 2 FEET.
.TODAY...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET.
.SATURDAY...EAST WINDS 20 TO 30 KNOTS. WAVES BUILDING TO 4 TO
7 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST
AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN AND FREEZING RAIN AFTER
MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF FREEZING
RAIN THROUGH EARLY AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING
TO 1 TO 3 FEET.
.SUNDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. A CHANCE OF RAIN...POSSIBLY MIXED WITH FREEZING RAIN.
WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-241600-
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-
353 AM EDT FRI MAR 24 2017

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF
RAIN...POSSIBLY MIXED WITH SNOW. WAVES 1 TO 3 FEET SUBSIDING TO
CALM TO 2 FEET.
.TODAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST BY MID
AFTERNOON. A SLIGHT CHANCE OF RAIN THROUGH EARLY AFTERNOON. WAVES
BUILDING TO 1 TO 3 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO
6 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS. WAVES 3 TO 6 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF FREEZING RAIN. A
SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO
4 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF FREEZING RAIN THROUGH
EARLY AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO
3 FEET.
.SUNDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. RAIN LIKELY THROUGH MIDNIGHT. A CHANCE OF RAIN AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST. A CHANCE
OF RAIN. WAVES CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ264-241600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
353 AM EDT FRI MAR 24 2017

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. RAIN LIKELY...
POSSIBLY MIXED WITH SNOW. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET.
.TODAY...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES 3 TO 6 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
RAIN...POSSIBLY MIXED WITH SNOW AFTER MIDNIGHT. WAVES BUILDING TO
3 TO 5 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. A CHANCE OF RAIN AND FREEZING RAIN. WAVES
SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. RAIN LIKELY. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS. RAIN LIKELY. WAVES CALM TO
2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-241600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
353 AM EDT FRI MAR 24 2017

.EARLY THIS MORNING...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF
RAIN. WAVES 1 TO 3 FEET SUBSIDING TO CALM TO 2 FEET.
.TODAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...NORTHEAST WINDS 20 TO 30 KNOTS BECOMING EAST 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES 3 TO 6 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS. WAVES 3 TO 5 FEET.
.SATURDAY NIGHT...EAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. A CHANCE OF FREEZING
RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET...THEN
BUILDING TO 3 TO 5 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS. RAIN LIKELY...POSSIBLY MIXED
WITH FREEZING RAIN. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. RAIN LIKELY. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTHWEST WINDS 10 TO 20 KNOTS. RAIN LIKELY. WAVES CALM
TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-241600-
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-
353 AM EDT FRI MAR 24 2017

.EARLY THIS MORNING...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF
RAIN. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
.TODAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN. WAVES
BUILDING TO 3 TO 5 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING EAST 20 TO
30 KNOTS AFTER MIDNIGHT. WAVES 3 TO 6 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS. WAVES 3 TO 5 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
SNOW THROUGH MIDNIGHT. A CHANCE OF RAIN. A CHANCE OF FREEZING
RAIN...POSSIBLY MIXED WITH SLEET AFTER MIDNIGHT. WAVES SUBSIDING
TO 2 TO 4 FEET...THEN BUILDING TO 3 TO 5 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
BY MID AFTERNOON. RAIN AND FREEZING RAIN LIKELY...POSSIBLY MIXED
WITH SLEET THROUGH EARLY AFTERNOON...THEN A CHANCE OF RAIN BY MID
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. RAIN LIKELY. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW. WAVES
BUILDING TO 1 TO 3 FEET.
.TUESDAY...NORTH WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.

$$

LSZ267-241600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
353 AM EDT FRI MAR 24 2017

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

$$

LSZ261-241600-
MAFOR 2409/
SUPERIOR WEST 11610 11710 11810 12120 13130. CHANCE OF RAIN
THROUGH MID MORNING. WAVES 2 FEET OR LESS TODAY. WAVES 2 TO 4
FEET BUILDING TO 3 TO 6 FEET TONIGHT.

SUPERIOR NORTH CENTRAL 11626 11720 12820 11130 12140 11130.
CHANCE OF RAIN THROUGH MID MORNING. WAVES 2 TO 6 FEET.

SUPERIOR SOUTH CENTRAL 11516 11610 11710 11810 11820 13130.
CHANCE OF RAIN THROUGH MID MORNING. WAVES 1 TO 3 FEET TODAY
BUILDING TO 4 TO 6 FEET TONIGHT.

SUPERIOR EAST 11516 11610 11710 11810 11820 11130 11140 11130.
WAVES 1 TO 3 FEET TODAY BUILDING TO 3 TO 6 FEET TONIGHT.

$$

ROLFSON



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