Great Lakes Forecast
Issued by NWS

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840
FZUS63 KMQT 260758
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
358 AM EDT SUN MAR 26 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A HIGH PRESSURE RIDGE OF 30.6 INCHES OVER QUEBEC AND
NEW ENGLAND WILL SLIDE EAST TOWARD ATLANTIC CANADA BY LATE TONIGHT
WHILE LOW PRESSURE OF 29.7 INCHES OVER NORTHERN ILLINOIS DRIFTS
TO THE CENTRAL GREAT LAKES. EXPECT THE LOW AND AN ASSOCIATED
TROUGH TO CROSS THE LOWER GREAT LAKES MONDAY INTO MONDAY NIGHT AS
HIGH PRESSURE OF 30.5 INCHES OVER HUDSON BAY EXTENDS A RIDGE OF
30.2 INCHES TO THE UPPER GREAT LAKES. THIS RIDGE WILL BUILD TO
30.4 INCHES OVER THE UPPER GREAT LAKES ON WEDNESDAY AND MOVE TO
THE LOWER GREAT LAKES AND MID ATLANTIC STATES ON THURSDAY AS LOW
PRESSURE OF 29.6 INCHES DEVELOPS OVER THE SOUTHERN PLAINS.

LSZ162-261600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
358 AM EDT SUN MAR 26 2017 /258 AM CDT SUN MAR 26 2017/

.EARLY THIS MORNING...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF
RAIN. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
.TODAY...NORTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN. WAVES
1 TO 3 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTHWEST AFTER
MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. A SLIGHT CHANCE OF RAIN
THROUGH MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW. WAVES
CALM TO 2 FEET.

$$

LSZ263-261600-
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-
358 AM EDT SUN MAR 26 2017

.EARLY THIS MORNING...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF
RAIN. WAVES 3 TO 5 FEET.
.TODAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF RAIN
THROUGH MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN AND SNOW.
WAVES CALM TO 2 FEET.

$$

LSZ264-261600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
358 AM EDT SUN MAR 26 2017

.EARLY THIS MORNING...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF
RAIN. WAVES 3 TO 6 FEET.
.TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON. RAIN LIKELY...POSSIBLY MIXED WITH
FREEZING RAIN THROUGH EARLY AFTERNOON...THEN A SLIGHT CHANCE OF
RAIN BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. A SLIGHT CHANCE OF RAIN THROUGH MIDNIGHT. WAVES
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN AND
SNOW. WAVES CALM TO 2 FEET.

$$

LSZ265-261600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
358 AM EDT SUN MAR 26 2017

.EARLY THIS MORNING...SOUTHEAST WINDS 10 TO 20 KNOTS. RAIN...
POSSIBLY MIXED WITH FREEZING RAIN. WAVES 3 TO 5 FEET.
.TODAY...EAST WINDS 5 TO 15 KNOTS. RAIN LIKELY...POSSIBLY MIXED
WITH FREEZING RAIN IN THE MORNING...THEN A CHANCE OF RAIN BY MID
AFTERNOON. PATCHY FOG BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3
FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH
MIDNIGHT. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. A CHANCE
OF RAIN AND SNOW. WAVES CALM TO 2 FEET.

$$

LSZ266-261600-
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-
358 AM EDT SUN MAR 26 2017

.EARLY THIS MORNING...SOUTHEAST WINDS 15 TO 25 KNOTS. RAIN...
POSSIBLY MIXED WITH FREEZING RAIN. WAVES 3 TO 6 FEET.
.TODAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF FREEZING RAIN IN THE MORNING.
A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO 20 KNOTS
AFTER MIDNIGHT. RAIN LIKELY THROUGH MIDNIGHT...THEN A CHANCE OF
RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF DRIZZLE
THROUGH EARLY AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST.
WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN AND
SNOW. WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ267-261600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
358 AM EDT SUN MAR 26 2017

.EARLY THIS MORNING...SOUTHEAST WINDS 20 TO 30 KNOTS. RAIN...
POSSIBLY MIXED WITH FREEZING RAIN. WAVES 3 TO 5 FEET.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. FREEZING RAIN IN THE MORNING. RAIN.
WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. RAIN LIKELY THROUGH MIDNIGHT...THEN A CHANCE OF RAIN.
WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. A SLIGHT CHANCE OF DRIZZLE THROUGH EARLY AFTERNOON.
WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS VEERING EAST. WAVES CALM
TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN AND
SNOW. WAVES CALM TO 2 FEET.

$$

LSZ261-261600-
MAFOR 2609/
SUPERIOR WEST 11210 11216 14110 12800. CHANCE OF RAIN THIS
MORNING. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 11320 11326 12310 11200 12100 11810.
CHANCE OF RAIN. WAVES 2 TO 6 FEET.

SUPERIOR SOUTH CENTRAL 11326 11216 11210 12200 11106 11800 11810.
CHANCE OF RAIN. PATCHY FOG IN THE EVENING. WAVES 1 TO 5 FEET.

SUPERIOR EAST 12336 11330 11326 12216 11106 11810. CHANCE OF
LIGHT FREEZING RAIN THROUGH MID MORNING. CHANCE OF RAIN. WAVES
1 TO 5 FEET.

$$

ROLFSON



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