Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 290755
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
355 AM EDT SUN MAR 29 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...AS A 30.4 INCH HIGH PRESSURE DRIFTS OFF THE SOUTHEAST
COAST TODAY...A 29.3 INCH LOW PRESSURE WILL MOVE THROUGH NORTHWEST
ONTARIO AND DRAG A LOW PRESSURE TROUGH ACROSS LAKE SUPERIOR. IN ITS
WAKE...LOOK FOR A WEAK 30.0 INCH HIGH PRESSURE RIDGE TO PASS ACROSS
THE UPPER GREAT LAKES ON MONDAY. ANOTHER 29.7 INCH LOW PRESSURE
SYSTEM WILL THEN TRACK SOUTHEAST ACROSS THE UPPER MIDWEST ON MONDAY
NIGHT AND INTO THE LOWER GREAT LAKES ON TUESDAY. EXPECT A 30.1 INCH
HIGH PRESSURE RIDGE TO FOLLOW INTO THE WESTERN GREAT LAKES LATER ON
TUESDAY. AFTER THIS RIDGE TRACKS TO THE EAST...A 29.4 INCH LOW
PRESSURE OVER SOUTH CENTRAL CANADA ON WEDNESDAY MORNING WILL MOVE
ACROSS NORTHWEST ONTARIO AND TO FAR NORTHWEST QUEBEC BY LATE
THURSDAY...DRAGGING A LOW PRESSURE TROUGH ACROSS THE UPPER GREAT
LAKES EARLY ON THURSDAY.

LSZ162-291600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
355 AM EDT SUN MAR 29 2015

...GALE WARNING IN EFFECT UNTIL 11 AM EDT /10 AM CDT/ THIS
MORNING...

.EARLY THIS MORNING...SOUTHWEST GALES TO 35 KNOTS. A CHANCE OF
SNOW...POSSIBLY MIXED WITH RAIN AND SLEET. WAVES 3 TO 6 FEET BUILDING
TO 4 TO 7 FEET.
.TODAY...SOUTHWEST GALES TO 35 KNOTS BECOMING SOUTHWEST WINDS 20 TO
30 KNOTS AND VEERING WEST BY MID AFTERNOON. A CHANCE OF SLEET
THROUGH EARLY AFTERNOON. SNOW... POSSIBLY MIXED WITH RAIN. WAVES
SUBSIDING TO 3 TO 5 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. A CHANCE OF SNOW...POSSIBLY MIXED WITH RAIN. WAVES CALM
TO 2 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST LESS THAN
10 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.

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

$$

LSZ263-291600-
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-
355 AM EDT SUN MAR 29 2015

...GALE WARNING IN EFFECT UNTIL 11 AM EDT THIS MORNING...

.EARLY THIS MORNING...SOUTH GALES TO 35 KNOTS. A SLIGHT CHANCE OF
RAIN...SNOW AND SLEET. WAVES 4 TO 7 FEET.
.TODAY...SOUTHWEST GALES TO 35 KNOTS BECOMING SOUTHWEST WINDS 20 TO
30 KNOTS AND VEERING WEST BY MID AFTERNOON. A SLIGHT CHANCE OF SLEET
THROUGH EARLY AFTERNOON. SNOW...POSSIBLY MIXED WITH RAIN. WAVES
SUBSIDING TO 3 TO 6 FEET... THEN BUILDING TO 4 TO 7 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN THROUGH
MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF RAIN
THROUGH MIDNIGHT. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.TUESDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.WEDNESDAY...SOUTH WINDS 15 TO 25 KNOTS VEERING SOUTHWEST. A
CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING
TO 3 TO 5 FEET.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS. WAVES BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.

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

$$

LSZ264-291600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
355 AM EDT SUN MAR 29 2015

...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH LATE
TONIGHT...

.EARLY THIS MORNING...SOUTH WINDS 20 TO 30 KNOTS.
.TODAY...SOUTH WINDS 20 TO 30 KNOTS BECOMING WEST GALES TO 35 KNOTS
THIS AFTERNOON. A SLIGHT CHANCE OF SLEET THROUGH EARLY AFTERNOON.
SNOW...POSSIBLY MIXED WITH RAIN.
.TONIGHT...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN THROUGH
MIDNIGHT. A SLIGHT CHANCE OF SNOW.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS
THROUGH EARLY AFTERNOON.
.MONDAY NIGHT...SOUTHEAST WINDS LESS THAN 10 KNOTS BECOMING EAST
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW.
.TUESDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST BY MID
AFTERNOON.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT.
.WEDNESDAY...SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST
20 TO 30 KNOTS. A CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN
SHOWERS.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS.

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

$$

LSZ265-291600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
355 AM EDT SUN MAR 29 2015

...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH LATE
TONIGHT...

.EARLY THIS MORNING...SOUTH WINDS 20 TO 30 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST GALES TO 35
KNOTS THIS AFTERNOON. SNOW. A SLIGHT CHANCE OF RAIN BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.TONIGHT...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN THROUGH MIDNIGHT. A
SLIGHT CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO 2 FEET...THEN
BUILDING TO 1 TO 3 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
CALM TO 2 FEET.
.MONDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SNOW. WAVES CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN SHOWERS.
WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

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

$$

LSZ266-291600-
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-
355 AM EDT SUN MAR 29 2015

...GALE WARNING IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH LATE
TONIGHT...

.EARLY THIS MORNING...SOUTH WINDS 20 TO 30 KNOTS.
.TODAY...SOUTH GALES TO 35 KNOTS. SNOW. A SLIGHT CHANCE OF RAIN
BY MID AFTERNOON.
.TONIGHT...NORTHWEST GALES TO 35 KNOTS. A CHANCE OF RAIN THROUGH
MIDNIGHT. A SLIGHT CHANCE OF SNOW.
.MONDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS.
.MONDAY NIGHT...EAST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW.
.TUESDAY...EAST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS BY MID AFTERNOON.
.TUESDAY NIGHT...SOUTH WINDS LESS THAN 10 KNOTS INCREASING TO
5 TO 15 KNOTS AFTER MIDNIGHT.
.WEDNESDAY...SOUTH WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS. A CHANCE OF RAIN SHOWERS.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS.

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

$$

LSZ267-291600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
355 AM EDT SUN MAR 29 2015

...GALE WARNING IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH LATE
TONIGHT...

.EARLY THIS MORNING...SOUTH WINDS 15 TO 25 KNOTS.
.TODAY...SOUTH GALES TO 35 KNOTS. A CHANCE OF SNOW THROUGH EARLY
AFTERNOON...THEN SNOW BY MID AFTERNOON.
.TONIGHT...NORTHWEST GALES TO 35 KNOTS. A SLIGHT CHANCE OF RAIN
THROUGH MIDNIGHT. A CHANCE OF SNOW.
.MONDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS.
.MONDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH BY MID
AFTERNOON.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH
AFTER MIDNIGHT.
.WEDNESDAY...SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. RAIN SHOWERS LIKELY.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS.

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

$$

LSZ261-291600-
MAFOR 2909/
SUPERIOR WEST...GALE WARNING IN EFFECT...11550 11557 11547 11647
13740 11630. CHANCE OF RAIN AND LIGHT SLEET THIS MORNING. SLIGHT
CHANCE OF RAIN THIS AFTERNOON. WAVES 3 TO 7 FEET TODAY SUBSIDING TO
2 TO 4 FEET TONIGHT.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...12450 12547 11647
11750 11740 11730. SLIGHT CHANCE OF RAIN AND LIGHT SLEET THIS
MORNING. CHANCE OF RAIN AND SLIGHT CHANCE OF SNOW AFTER MIDNIGHT
TONIGHT. WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11440 11450
11457 11547 11647 12750 11740. CHANCE OF RAIN AND SLIGHT CHANCE
OF SNOW AFTER MIDNIGHT TONIGHT. WAVES 1 FOOT OR LESS.

SUPERIOR EAST...GALE WARNING IN EFFECT...11440 11450 12457 11547
11647 12750. CHANCE OF SNOW THIS MORNING. SLIGHT CHANCE OF RAIN
AFTER MIDNIGHT TONIGHT. WAVES OMITTED FOR MOSTLY ICE COVERED
AREAS.

$$

JLB


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