Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 020219
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1019 PM EDT WED APR 1 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...LOW PRESSURE OF 29.4 INCHES JUST NORTHWEST OF
INTERNATIONAL FALLS MINNESOTA WILL MOVE TO THE NORTHEAST...REACHING
JAMES BAY THURSDAY EVENING. AN ASSOCIATED 29.5 INCH TROUGH WILL CROSS
LAKE SUPERIOR LATE TONIGHT AND THURSDAY MORNING. A 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 AND OHIO RIVER
VALLEYS ON SATURDAY. LOOK FOR A WEAK 30.0 INCH LOW PRESSURE TROUGH TO
CROSS THE UPPER GREAT LAKES ON SATURDAY. FOR SUNDAY AND MONDAY...A
HIGH PRESSURE RIDGE OF 30.2 INCHES WILL SETTLE ACROSS MANITOBA AND
ONTARIO AS BROAD 29.6 INCH LOW PRESSURE FORMS ACROSS THE CENTRAL
PLAINS.

LSZ162-021030-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1019 PM EDT WED APR 1 2015

.REST OF TONIGHT...SOUTH WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. PATCHY FOG AND ISOLATED RAIN SHOWERS THROUGH LATE EVENING.
WAVES 1 TO 3 FEET.
.THURSDAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 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 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...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST. WAVES CALM
TO 2 FEET.
.MONDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS.
A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.

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

$$

LSZ263-021030-
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-
1019 PM EDT WED APR 1 2015

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

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

$$

LSZ264-021030-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1019 PM EDT WED APR 1 2015

...GALE WARNING IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

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

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

$$

LSZ265-021030-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1019 PM EDT WED APR 1 2015

...GALE WARNING IN EFFECT UNTIL 11 PM EDT THIS EVENING...

.REST OF TONIGHT...SOUTHEAST GALES TO 35 KNOTS BECOMING SOUTHWEST 15
TO 25 KNOTS AFTER MIDNIGHT. ISOLATED RAIN SHOWERS. WAVES 2 TO 4 FEET
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON.
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. A SLIGHT CHANCE OF SNOW SHOWERS
THROUGH EARLY 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...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST BY MID
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SATURDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.
.MONDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS.
A CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET.

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

$$

LSZ266-021030-
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-
1019 PM EDT WED APR 1 2015

...GALE WARNING IN EFFECT UNTIL 2 AM EDT TONIGHT...

.REST OF TONIGHT...SOUTHEAST GALES TO 35 KNOTS VEERING SOUTH
20 TO 30 KNOTS AFTER MIDNIGHT. PATCHY FOG. SCATTERED RAIN SHOWERS.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH EARLY
AFTERNOON. PATCHY FOG.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
20 TO 30 KNOTS AFTER MIDNIGHT. PATCHY FOG THROUGH 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. A SLIGHT CHANCE OF SNOW SHOWERS
THROUGH EARLY AFTERNOON.
.FRIDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS BACKING WEST AFTER
MIDNIGHT.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS.
.SATURDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTHEAST.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST.

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

$$

LSZ267-021030-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1019 PM EDT WED APR 1 2015

.REST OF TONIGHT...SOUTHEAST WINDS 20 TO 30 KNOTS WITH A FEW GALE
FORCE GUSTS TO 35 KNOTS...VEERING SOUTHWEST 20 TO 30 KNOTS AFTER
MIDNIGHT. PATCHY FOG. RAIN SHOWERS...BECOMING SCATTERED AFTER
MIDNIGHT.
.THURSDAY...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS THROUGH EARLY
AFTERNOON. PATCHY FOG.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS AFTER MIDNIGHT. PATCHY FOG THROUGH 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...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT.
.SUNDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH.
.MONDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS.

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

$$
LSZ261-021030-
MAFOR 0203/
SUPERIOR WEST 11440 11640 11630 11620 11530 12540 11640. PATCHY FOG
THROUGH THE EVENING. WAVES 1 TO 6 FEET.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11350 11440
11540 11630 11620 11530 11540 11640. PATCHY FOG THROUGH THURSDAY
MORNING. WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11350 11440
11540 13620 11520 11530. ISOLATED RAIN SHOWERS THIS EVENING. PATCHY
FOG THROUGH THURSDAY MORNING. WAVES CALM TO 4 FEET.

SUPERIOR EAST...GALE WARNING IN EFFECT...11340 12440 11530 12620
12520. SCATTERED RAIN SHOWERS THROUGH EARLY THURSDAY AFTERNOON.
WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

PETRO


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