Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 240748
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
348 AM EDT THU APR 24 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...AS A 30.2 INCH HIGH PRESSURE RIDGE OVER LAKE HURON EARLY
THIS MORNING DRIFTS OFF THE EAST COAST ON FRIDAY MORNING...A 29.5
INCH LOW PRESSURE OVER THE CENTRAL PLAINS WILL SHIFT TO THE LOWER
GREAT LAKES. EXPECT THIS LOW TO CONTINUE NORTHEASTWARD INTO NORTHERN
NEW ENGLAND ON SATURDAY. A LARGE CANADIAN HIGH PRESSURE RIDGE
AVERAGING 30.4 INCHES WILL THEN BUILD ACROSS THE NORTHERN GREAT
LAKES SATURDAY INTO MONDAY.

LSZ162-241600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
348 AM EDT THU APR 24 2014 /248 AM CDT THU APR 24 2014/

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

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

$$

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-
348 AM EDT THU APR 24 2014

.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 THROUGH EARLY AFTERNOON. A SLIGHT
CHANCE OF SNOW. RAIN BY MID AFTERNOON. WAVES BUILDING TO 2 TO
4 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
AFTER MIDNIGHT. SNOW...POSSIBLY MIXED WITH RAIN. WAVES BUILDING
TO 3 TO 6 FEET.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO 15 KNOTS
BY MID AFTERNOON. A CHANCE OF SNOW. A SLIGHT CHANCE OF RAIN
SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES BUILDING
TO 1 TO 3 FEET.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO
5 FEET.
.MONDAY...EAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST. WAVES
SUBSIDING TO 2 TO 4 FEET...THEN BUILDING TO 3 TO 5 FEET.

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

$$

LSZ264-241600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
348 AM EDT THU APR 24 2014

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

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

$$

LSZ265-241600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
348 AM EDT THU APR 24 2014

.EARLY THIS MORNING...SOUTHEAST WINDS 10 TO 20 KNOTS.
.TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. A
SLIGHT CHANCE OF SNOW BY MID AFTERNOON.
.TONIGHT...EAST WINDS 20 TO 30 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. SNOW...POSSIBLY MIXED WITH RAIN.
.FRIDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. SNOW THROUGH EARLY AFTERNOON. A CHANCE
OF RAIN. A CHANCE OF SNOW SHOWERS BY MID AFTERNOON.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SNOW SHOWERS.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST BY MID
AFTERNOON.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS.
.MONDAY...EAST WINDS 15 TO 25 KNOTS.

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

$$

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-
348 AM EDT THU APR 24 2014

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS.
.TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN...
POSSIBLY MIXED WITH SNOW BY MID AFTERNOON.
.TONIGHT...EAST WINDS 20 TO 30 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. SNOW...POSSIBLY MIXED WITH RAIN.
.FRIDAY...SOUTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. SNOW THROUGH EARLY AFTERNOON. A SLIGHT
CHANCE OF RAIN. A CHANCE OF SNOW SHOWERS BY MID AFTERNOON.
.FRIDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS THROUGH
MIDNIGHT.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST BY MID
AFTERNOON.
.SATURDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST
AFTER MIDNIGHT.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS.
.MONDAY...EAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST.

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

$$

LSZ267-241600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
348 AM EDT THU APR 24 2014

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN BY MID AFTERNOON.
.TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS BACKING EAST AFTER
MIDNIGHT. SNOW...POSSIBLY MIXED WITH RAIN.
.FRIDAY...SOUTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. SNOW LIKELY THROUGH EARLY AFTERNOON. A
SLIGHT CHANCE OF RAIN. A CHANCE OF SNOW SHOWERS BY MID AFTERNOON.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS.
.SATURDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST
AFTER MIDNIGHT.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST.
.MONDAY...NORTHEAST WINDS 10 TO 20 KNOTS.

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

$$

LSZ261-241600-
MAFOR 2409/
SUPERIOR WEST 11300 11210 11220 12237 11247 11237 11227. CHANCE OF
SNOW AND RAIN THIS MORNING. SNOW AND RAIN THIS AFTERNOON. CHANCE OF
SNOW AND RAIN TONIGHT. WAVES 1 TO 5 FEET.

SUPERIOR NORTH CENTRAL 12310 12320 11326 11337 11247 11347. CHANCE
OF RAIN AND SNOW THIS AFTERNOON. SNOW AND RAIN TONIGHT. WAVES 5 FEET
OR LESS.

SUPERIOR SOUTH CENTRAL 12310 12320 11326 11337 11247 11347. CHANCE
OF RAIN AND SNOW THIS AFTERNOON. RAIN AND SNOW TONIGHT. WAVES
OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR EAST 11300 12310 11220 11320 11336 11347 11247. CHANCE OF
RAIN THIS AFTERNOON. RAIN AND SNOW LIKELY TONIGHT. WAVES OMITTED FOR
MOSTLY ICE COVERED AREAS.

$$

KC





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