Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 210137
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
937 PM EDT SUN APR 20 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...29.7 INCH LOW PRESSURE OVER NORTHERN JAMES BAY LATE THIS
EVENING WILL TRACK EASTWARD TO CENTRAL QUEBEC OVERNIGHT WHILE A WEAK
30.1 INCH HIGH PRESSURE RIDGE MOVES OVER LAKE SUPERIOR. AS THIS HIGH
DRIFTS EASTWARD TO QUEBEC ON MONDAY...ANOTHER 29.8 INCH LOW PRESSURE
WILL TRACK EAST ACROSS ONTARIO WHILE A SECOND 29.7 INCH LOW MOVES
THROUGH WISCONSIN AND INTO LOWER MICHIGAN. THESE TWO LOW PRESSURE
SYSTEMS WILL MERGE OVER FAR SOUTHEAST ONTARIO ON TUESDAY MORNING AND
DEEPEN TO 29.6 INCHES AS A 30.2 INCH HIGH PRESSURE MOVES FROM SOUTH
CENTRAL CANADA INTO MINNESOTA. LOOK FOR THIS HIGH TO DRIFT THROUGH
THE GREAT LAKES ON WEDNESDAY AND INTO THE MID ATLANTIC STATES ON
THURSDAY. A 29.3 INCH LOW PRESSURE TAKING SHAPE IN THE NORTHERN
PLAINS ON WEDNESDAY WILL THEN FOLLOW INTO MINNESOTA ON THURSDAY AND
THE GREAT LAKES ON FRIDAY.

LSZ162-210945-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
937 PM EDT SUN APR 20 2014 /837 PM CDT SUN APR 20 2014/

.REST OF TONIGHT...SOUTHEAST WINDS LESS THAN 10 KNOTS BACKING
EAST AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS LESS THAN 10 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES
CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST LESS
THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.
WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY...EAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST. RAIN
LIKELY...THEN A CHANCE OF RAIN. WAVES BUILDING TO 3 TO 5 FEET...
THEN SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. A CHANCE OF RAIN. WAVES BUILDING TO 3 TO 5 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

$$

LSZ263-210945-
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-
937 PM EDT SUN APR 20 2014

.REST OF TONIGHT...SOUTHWEST WINDS LESS THAN 10 KNOTS BACKING
SOUTHEAST AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS LESS THAN 10 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES
CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.TUESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH
LESS THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 15 TO 25 KNOTS. RAIN LIKELY. WAVES
BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTH WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

$$

LSZ264-210945-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
937 PM EDT SUN APR 20 2014

.REST OF TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING
SOUTHEAST LESS THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.MONDAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS BY MID AFTERNOON.
WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. RAIN LIKELY. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTH WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW. WAVES
2 TO 4 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

$$

LSZ265-210945-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
937 PM EDT SUN APR 20 2014

.REST OF TONIGHT...SOUTHEAST WINDS LESS THAN 10 KNOTS BECOMING
EAST 5 TO 15 KNOTS AFTER MIDNIGHT.
.MONDAY...SOUTHEAST WINDS LESS THAN 10 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS BY MID
AFTERNOON.
.MONDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS.
.WEDNESDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS.
.THURSDAY...SOUTHEAST WINDS 15 TO 25 KNOTS BACKING EAST. RAIN
LIKELY.
.FRIDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. RAIN LIKELY. A CHANCE OF SNOW.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

LSZ266-210945-
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-
937 PM EDT SUN APR 20 2014

.REST OF TONIGHT...VARIABLE WINDS LESS THAN 10 KNOTS BECOMING EAST
AFTER MIDNIGHT.
.MONDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH BY MID
AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS BY MID AFTERNOON.
.MONDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT.
.THURSDAY...SOUTHEAST WINDS 20 TO 30 KNOTS. RAIN LIKELY.
.FRIDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS. RAIN LIKELY. A CHANCE OF SNOW.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

LSZ267-210945-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
937 PM EDT SUN APR 20 2014

.REST OF TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING VARIABLE LESS
THAN 10 KNOTS BY MIDNIGHT...THEN BECOMING EAST LATE.
.MONDAY...EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST LESS THAN
10 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS BY MID
AFTERNOON.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS
AND DRIZZLE THROUGH MIDNIGHT.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING
SOUTHEAST 10 TO 20 KNOTS AFTER MIDNIGHT.
.THURSDAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. RAIN LIKELY.
.FRIDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. RAIN LIKELY...THEN A CHANCE OF SNOW...POSSIBLY MIXED
WITH RAIN.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$
LSZ261-210945-
MAFOR 2103/
SUPERIOR WEST 12300 11200 11300 11500 11610 12720. SLIGHT CHANCE OF
RAIN SHOWERS MONDAY AFTERNOON. WAVES 2 FEET OR LESS. WAVE HEIGHT
FORECASTS ARE FOR ICE FREE AREAS.

SUPERIOR NORTH CENTRAL 11500 11400 13300 11400 11610 11730. SLIGHT
CHANCE OF RAIN SHOWERS MONDAY AFTERNOON AND EVENING. WAVES 1 FOOT OR
LESS OVERNIGHT AND MONDAY BUILDING TO 1 TO 3 FEET MONDAY EVENING.
WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

SUPERIOR SOUTH CENTRAL 11300 12200 13300 11710 11730. SLIGHT CHANCE
OF RAIN SHOWERS MONDAY AFTERNOON AND EVENING. WAVES OMITTED FOR
MOSTLY ICE COVERED AREAS.

SUPERIOR EAST 11700 11100 14200 11800 11730. SLIGHT CHANCE OF RAIN
SHOWERS MONDAY EVENING. WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

KLUBER





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