Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 230746
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
346 AM EDT WED APR 23 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...30.2 INCH HIGH PRESSURE ACROSS THE UPPER GREAT LAKES
WILL SHIFT EAST TO CANADA AND THE LOWER GREAT LAKES ON THURSDAY.
THIS WILL MAKE WAY FOR LOW PRESSURE AVERAGING 29.6 INCHES STRETCHING
FROM SOUTHERN SASKATCHEWAN TO IOWA AT DAYBREAK THURSDAY TO PUSH
ACROSS THE UPPER GREAT LAKES THURSDAY NIGHT THROUGH FRIDAY...BEFORE
EXITING ACROSS LAKE HURON LATE FRIDAY AFTERNOON. LARGE 30.4 INCH
HIGH PRESSURE OVER CENTRAL CANADA ON FRIDAY WILL PUSH ACROSS HUDSON
BAY SATURDAY...WHERE IT WILL REMAIN THROUGH SUNDAY WHILE BUILDING TO
30.6 INCHES. EXPECT A 30.0 INCH RIDGE EXTENDING SOUTHWARD ACROSS LAKE
SUPERIOR FRIDAY NIGHT TO BUILD TO 30.3 INCHES SATURDAY INTO SUNDAY AS
29.1 INCH LOW PRESSURE ORGANIZES ACROSS THE CENTRAL PLAINS.

LSZ162-231600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
346 AM EDT WED APR 23 2014 /246 AM CDT WED APR 23 2014/

.EARLY THIS MORNING...SOUTHEAST WINDS LESS THAN 10 KNOTS. WAVES
CALM TO 2 FEET.
.TODAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF RAIN. A
SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW THROUGH EARLY
AFTERNOON...THEN SNOW. RAIN. WAVES BUILDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT. SNOW...POSSIBLY MIXED WITH RAIN.
WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. A CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO
2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST. WAVES
CALM TO 2 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS.
WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 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-
346 AM EDT WED APR 23 2014

.EARLY THIS MORNING...SOUTH WINDS LESS THAN 10 KNOTS. WAVES CALM
TO 2 FEET.
.TODAY...SOUTH WINDS LESS THAN 10 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW
THROUGH EARLY AFTERNOON...THEN SNOW. A CHANCE OF RAIN. WAVES
BUILDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
RAIN THROUGH MIDNIGHT. SNOW. WAVES 2 TO 4 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A CHANCE OF SNOW. WAVES SUBSIDING TO 1 TO
3 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS.
WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 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-
346 AM EDT WED APR 23 2014

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

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

$$

LSZ265-231600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
346 AM EDT WED APR 23 2014

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

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED 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-
346 AM EDT WED APR 23 2014

.EARLY THIS MORNING...NORTHWEST WINDS 5 TO 15 KNOTS.
.TODAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST LESS THAN
10 KNOTS BY MID AFTERNOON.
.TONIGHT...EAST WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST 5 TO
15 KNOTS AFTER MIDNIGHT.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW...POSSIBLY MIXED WITH
RAIN.
.THURSDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. SNOW...POSSIBLY
MIXED WITH RAIN.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTH BY MID
AFTERNOON. SNOW LIKELY THROUGH EARLY AFTERNOON...THEN A CHANCE OF
SNOW.
.FRIDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST.

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

$$

LSZ267-231600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
346 AM EDT WED APR 23 2014

.EARLY THIS MORNING...NORTHWEST WINDS 5 TO 15 KNOTS.
.TODAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON.
.TONIGHT...NORTHWEST WINDS LESS THAN 10 KNOTS BECOMING EAST 5 TO
15 KNOTS AFTER MIDNIGHT.
.THURSDAY...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN...POSSIBLY MIXED WITH
SNOW BY MID AFTERNOON.
.THURSDAY NIGHT...EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. SNOW...POSSIBLY MIXED WITH RAIN.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO 15 KNOTS
BY MID AFTERNOON. SNOW LIKELY THROUGH EARLY AFTERNOON...THEN A
CHANCE OF SNOW.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KNOTS.

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

$$

LSZ261-231600-
MAFOR 2309/
SUPERIOR WEST 12300 12200 11210 12220 11210. SLIGHT CHANCE OF RAIN
OVERNIGHT. WAVES 2 FEET OR LESS. WAVE HEIGHT FORECASTS ARE FOR ICE
FREE AREAS.

SUPERIOR NORTH CENTRAL 11700 11600 11500 12400 11300 12310.  WAVES
1 FOOT OR LESS. WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

SUPERIOR SOUTH CENTRAL 13700 12200 11210 12310. WAVES 1 FOOT OR
LESS. WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR EAST 13700 12600 11700 11800 11200. WAVES 1 FOOT OR LESS.
WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

KF





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