Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 240758
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
358 AM EDT SUN APR 24 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A RIDGE OF HIGH PRESSURE AVERAGING 30.2 INCHES
EXTENDING FROM HUDSON BAY INTO THE OHIO RIVER VALLEY WILL SHIFT EAST
AS LOW PRESSURE OF 29.4 INCHES MOVES FROM THE NORTHERN PLAINS INTO
THE UPPER MISSISSIPPI VALLEY BY MONDAY MORNING. THIS LOW WILL REACH
THE LOWER GREAT LAKES ON TUESDAY AND THE ATLANTIC COAST TUESDAY
NIGHT WHILE WEAKENING TO 29.6 INCHES. AT 30.4 INCH HIGH OVER WESTERN
HUDSON BAY WILL PUSH A RIDGE AVERAGING 30.1 INCHES INTO THE GREAT
LAKES REGION WEDNESDAY. THIS RIDGE WILL WEAKEN SLIGHTLY TO30.1INCHES
AS LOW PRESSURE OF 29.5 INCHES DEVELOPS OVER THE CENTRAL PLAINS AND
MOVES INTO THE UPPER OHIO RIVER VALLEY THURSDAY NIGHT.

LSZ162-241600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
358 AM EDT SUN APR 24 2016 /258 AM CDT SUN APR 24 2016/

...GALE WARNING IN EFFECT FROM 11 AM EDT /10 AM CDT/ THIS MORNING
THROUGH MONDAY EVENING...

.EARLY THIS MORNING...NORTHEAST WINDS 15 TO 25 KNOTS. RAIN
LIKELY. WAVES 3 TO 5 FEET.
.TODAY...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. RAIN. WAVES BUILDING TO 7 TO 10 FEET.
.TONIGHT...NORTHEAST GALES TO 35 KNOTS. RAIN. WAVES SUBSIDING TO
6 TO 9 FEET...THEN BUILDING TO 7 TO 10 FEET.
.MONDAY...NORTHEAST GALES TO 40 KNOTS. RAIN LIKELY THROUGH EARLY
AFTERNOON...THEN A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW BY
MID AFTERNOON. WAVES BUILDING TO 8 TO 12 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN...POSSIBLY MIXED
WITH SNOW. WAVES SUBSIDING TO 3 TO 6 FEET.
.TUESDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 1 TO
3 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTHWEST.
WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 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-
358 AM EDT SUN APR 24 2016

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
EVENING...

.EARLY THIS MORNING...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF
RAIN. WAVES 1 TO 3 FEET.
.TODAY...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN. WAVES
BUILDING TO 4 TO 7 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. FREQUENT GALE FORCE GUSTS TO 35 KNOTS LATE. A
CHANCE OF RAIN. WAVES BUILDING TO 5 TO 8 FEET.
.MONDAY...EAST GALES TO 40 KNOTS BECOMING NORTHEAST GALES TO
35 KNOTS BY MID AFTERNOON. RAIN LIKELY THROUGH EARLY AFTERNOON. A
SLIGHT CHANCE OF SNOW. A CHANCE OF RAIN BY MID AFTERNOON. WAVES
BUILDING TO 8 TO 11 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN AND SNOW.
WAVES SUBSIDING TO 3 TO 6 FEET.
.TUESDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 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-
358 AM EDT SUN APR 24 2016

.EARLY THIS MORNING...EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE
OF RAIN...POSSIBLY MIXED WITH SNOW. WAVES CALM TO 2 FEET.
.TODAY...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN. WAVES BUILDING TO 1 TO
3 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN. WAVES BUILDING TO 3 TO
6 FEET.
.MONDAY...EAST WINDS 20 TO 30 KNOTS BECOMING NORTHEAST BY MID
AFTERNOON. A SLIGHT CHANCE OF RAIN AND SNOW. WAVES BUILDING TO
5 TO 8 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN AND SNOW
THROUGH MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET...THEN BUILDING
TO 3 TO 6 FEET.
.TUESDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
.THURSDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.

$$

LSZ265-241600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
358 AM EDT SUN APR 24 2016

.EARLY THIS MORNING...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF
RAIN. WAVES CALM TO 2 FEET.
.TODAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. A CHANCE OF RAIN. WAVES BUILDING TO 1 TO
3 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES BUILDING TO 3 TO 6 FEET.
.MONDAY...EAST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO
35 KNOTS. RAIN LIKELY. WAVES BUILDING TO 6 TO 9 FEET...THEN
SUBSIDING TO 4 TO 7 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF
RAIN...POSSIBLY MIXED WITH SNOW. WAVES SUBSIDING TO 2 TO 4 FEET...
THEN BUILDING TO 3 TO 6 FEET.
.TUESDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 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-
358 AM EDT SUN APR 24 2016

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS. A SLIGHT
CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.TODAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS BY
MID AFTERNOON. A CHANCE OF RAIN. WAVES BUILDING TO 1 TO 3 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES BUILDING TO 3 TO 6 FEET.
.MONDAY...EAST WINDS 20 TO 30 KNOTS. A CHANCE OF RAIN THROUGH EARLY
AFTERNOON...THEN RAIN LIKELY...POSSIBLY MIXED WITH SNOW BY MID
AFTERNOON. WAVES BUILDING TO 4 TO 8 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN AND SNOW.
WAVES SUBSIDING TO 3 TO 6 FEET.
.TUESDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.

$$

LSZ267-241600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
358 AM EDT SUN APR 24 2016

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

$$

LSZ261-241600-
MAFOR 2409/
SUPERIOR WEST...GALE WARNING IN EFFECT...12136 11146 14156 11156.
WAVES 3 TO 6 FEET BUILDING TO 5 TO 8 FEET TODAY. WAVES 5 TO 9
FEET TONIGHT.

SUPERIOR NORTH CENTRAL 11210 15220 11240. WAVES 1 TO 4 FEET.

SUPERIOR SOUTH CENTRAL 11310 15220 11230. CHANCE OF RAIN. WAVES
1 TO 4 FEET.

SUPERIOR EAST 11310 14210 11210 11220 11230. CHANCE OF RAIN. WAVES
1 TO 3 FEET.

$$

KC



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