Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 010808
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
408 AM EDT WED APR 1 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...AS A 30.0 INCH HIGH PRESSURE SYSTEM OVER WESTERN ONTARIO
DRIFTS INTO THE MID ATLANTIC STATES TODAY...EXPECT 29.3 INCH LOW
PRESSURE SYSTEM TO MOVE EASTWARD ACROSS FAR SOUTHERN SASKATCHEWAN
AND MANITOBA. AN ASSOCIATED 29.5 INCH TROUGH/COLD FRONT WILL CROSS
LAKE SUPERIOR LATE TONIGHT AND THURSDAY MORNING WHILE THE LOW MOVES
OVER NORTHERN ONTARIO. A SECONDARY COLD FRONT WILL THEN CROSS LAKE
SUPERIOR THURSDAY EVENING AS THE LOW MOVES ACROSS JAMES BAY. A 30.3
INCH HIGH PRESSURE SYSTEM WILL MOVE INTO THE NORTH CENTRAL PLAINS ON
FRIDAY AND THE MID MISSISSIPPI RIVER VALLEY ON SATURDAY AS A 29.6
INCH LOW FORMS ON THE COLD FRONT OVER THE OHIO VALLEY. LOOK FOR A
WEAK 30.0 INCH LOW PRESSURE TROUGH TO CROSS THE UPPER GREAT LAKES ON
SATURDAY BEFORE A 30.2 INCH RIDGE BUILDS IN FROM THE NORTHWEST ON
SUNDAY.

LSZ162-011615-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
408 AM EDT WED APR 1 2015

.EARLY THIS MORNING...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...EAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF RAIN
SHOWERS. PATCHY FOG BY MID AFTERNOON. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST.
WAVES CALM TO 2 FEET.
.SUNDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST. WAVES CALM
TO 2 FEET.

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

$$

LSZ263-011615-
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-
408 AM EDT WED APR 1 2015

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
.TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS
THROUGH EARLY AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS. PATCHY
FOG BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.TONIGHT...SOUTH WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT. PATCHY FOG. WAVES SUBSIDING TO
1 TO 3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
WAVES SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST. A
CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET.
.SUNDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST. WAVES CALM
TO 2 FEET.

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

$$

LSZ264-011615-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
408 AM EDT WED APR 1 2015

...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH THIS
EVENING...

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS.
.TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO GALES TO 35
KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF FREEZING RAIN THROUGH
EARLY AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS.
.TONIGHT...SOUTHEAST GALES TO 35 KNOTS BECOMING WEST 10 TO 20 KNOTS
AFTER MIDNIGHT. PATCHY FOG. A SLIGHT CHANCE OF RAIN SHOWERS.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST
20 TO 30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT.
.FRIDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT.
.SATURDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. A CHANCE OF SNOW SHOWERS.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTHEAST.

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

$$

LSZ265-011615-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
408 AM EDT WED APR 1 2015

...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH THIS
EVENING...

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
.TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO GALES TO 35
KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED
WITH SNOW. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...SOUTHEAST GALES TO 35 KNOTS BECOMING SOUTHWEST 10 TO 20
KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
20 TO 30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN AND SNOW
SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.

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

$$

LSZ266-011615-
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-
408 AM EDT WED APR 1 2015

...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH THIS
EVENING...

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

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

$$

LSZ267-011615-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
408 AM EDT WED APR 1 2015

.EARLY THIS MORNING...EAST WINDS LESS THAN 10 KNOTS.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS...POSSIBLY
MIXED WITH SNOW BY MID AFTERNOON.
.TONIGHT...SOUTHEAST WINDS 20 TO 30 KNOTS VEERING SOUTH AFTER
MIDNIGHT. RAIN SHOWERS LIKELY. PATCHY FOG AFTER MIDNIGHT.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A
CHANCE OF RAIN SHOWERS THROUGH EARLY AFTERNOON.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS AFTER MIDNIGHT.
.FRIDAY...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS BY MID AFTERNOON.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST. A CHANCE
OF SNOW SHOWERS.
.SUNDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH.

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

$$

LSZ261-011615-
MAFOR 0109/
SUPERIOR WEST 12210 11220 11230 11320 11420 11520 11620. WAVES 1
TO 3 FEET BUILDING TO 2 TO 4 FEET TODAY. WAVES 1 TO 3 FEET
TONIGHT.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11300 11310
11320 11340 12350 11340 11430. CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT TONIGHT. WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11210 11310
11320 11340 12350 11440 11420. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF SNOW SHOWERS THIS AFTERNOON. CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT TONIGHT. WAVES 1 TO 5 FEET SUBSIDING TO 1 TO 3 FEET
TONIGHT.

SUPERIOR EAST...GALE WARNING IN EFFECT...11100 11300 11310 11320
11350 11256 11346 11446. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
SNOW SHOWERS THIS AFTERNOON. WAVES OMITTED FOR MOSTLY ICE COVERED
AREAS.

$$

TITUS


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