Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 230759
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
359 AM EDT MON MAR 23 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...HIGH PRESSURE OF 30.5 INCHES CENTERED JUST NORTHEAST OF
LAKE SUPERIOR WILL DRIFT SOUTHEAST...REACHING SOUTHERN ONTARIO
TUESDAY MORNING AND THEN THE MID ATLANTIC STATES TUESDAY AFTERNOON.
A 29.7 INCH LOW PRESSURE DEVELOPING IN THE CENTRAL PLAINS TUESDAY
WILL STRENGTHEN TO 29.5 INCHES AS IT TRACKS NORTHEAST...CROSSING FAR
NORTHERN LOWER MICHIGAN WEDNESDAY AFTERNOON. AS THE LOW MOVES ACROSS
SOUTHERN QUEBEC WEDNESDAY NIGHT AND INTO THE CANADIAN MARITIMES ON
THURSDAY...A 29.9 INCH TROUGH WILL LINGER BACK THROUGH THE GREAT
LAKES WHILE HIGH PRESSURE OF 30.5 INCHES BUILDS SOUTH THROUGH
MANITOBA. AS THE HIGH CONTINUES TO MOVE SOUTH THROUGH THE NORTHERN
PLAINS ON FRIDAY...IT WILL EXTEND A 30.4 INCH RIDGE INTO THE UPPER
GREAT LAKES.

LSZ162-231600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
359 AM EDT MON MAR 23 2015

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

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

$$

LSZ263-231600-
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-
359 AM EDT MON MAR 23 2015

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST AFTER
MIDNIGHT. A CHANCE OF SNOW...POSSIBLY MIXED WITH RAIN AFTER
MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS BY MID AFTERNOON. SNOW LIKELY. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS BACKING WEST. WAVES CALM TO
2 FEET.

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

$$

LSZ264-231600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
359 AM EDT MON MAR 23 2015

.EARLY THIS MORNING...EAST WINDS 10 TO 20 KNOTS.
.TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT.
.TUESDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF SNOW AFTER MIDNIGHT.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. SNOW LIKELY.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS THROUGH
MIDNIGHT...THEN SNOW SHOWERS LIKELY AFTER MIDNIGHT.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW SHOWERS.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST.

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

$$

LSZ265-231600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
359 AM EDT MON MAR 23 2015

.EARLY THIS MORNING...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2
FEET.
.TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF
SNOW...POSSIBLY MIXED WITH FREEZING RAIN AFTER MIDNIGHT. WAVES
BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTH BY MID
AFTERNOON. SNOW. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS THROUGH
MIDNIGHT...THEN SNOW SHOWERS LIKELY AFTER MIDNIGHT. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS. SNOW SHOWERS LIKELY...
THEN A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 2 TO 4 FEET...
THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS BACKING WEST. WAVES CALM TO
2 FEET.

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

$$

LSZ266-231600-
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-
359 AM EDT MON MAR 23 2015

.EARLY THIS MORNING...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF FREEZING RAIN AND SNOW AFTER MIDNIGHT. WAVES BUILDING TO 1 TO
3 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTH BY MID
AFTERNOON. SNOW LIKELY. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO 15 KNOTS.
WAVES CALM TO 2 FEET.

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

$$

LSZ267-231600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
359 AM EDT MON MAR 23 2015

.EARLY THIS MORNING...EAST WINDS 5 TO 15 KNOTS.
.TODAY...EAST WINDS 5 TO 15 KNOTS.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO 20 KNOTS
AFTER MIDNIGHT.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF FREEZING RAIN AND SNOW AFTER MIDNIGHT.
.WEDNESDAY...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. SNOW.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS.

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

$$

LSZ261-231600-
MAFOR 2309/
SUPERIOR WEST 13320 12210 11220 11320 11410. WAVES 1 TO 2 FEET.

SUPERIOR NORTH CENTRAL 16310. WAVES OMITTED FOR MOSTLY ICE
COVERED AREAS.

SUPERIOR SOUTH CENTRAL 11210 12310 14320 11420. WAVES 2 FEET OR
LESS.

SUPERIOR EAST 11200 13300 12200 12300. WAVES OMITTED FOR MOSTLY
ICE COVERED AREAS.

$$

ROLFSON



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