Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 052055
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
355 PM EST THU MAR 5 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.6 INCH HIGH PRESSURE OVER IOWA WILL SHIFT SOUTHEAST
THROUGH THE OHIO RIVER VALLEY TONIGHT AND INTO THE SOUTHEAST STATES
BY EARLY SATURDAY. MEANWHILE...A 29.9 INCH LOW PRESSURE IN
SASKATCHEWAN ON FRIDAY WILL SLIDE QUICKLY ACROSS THE UPPER GREAT
LAKES EARLY SATURDAY AND THEN INTO NEW ENGLAND ON SUNDAY. EXPECT A
TRAILING 30.1 INCH HIGH PRESSURE RIDGE TO CROSS THE UPPER LAKES LATE
SATURDAY IN ADVANCE OF 29.7 INCH LOW PRESSURE THAT WILL CROSS
NORTHERN ONTARIO ON SUNDAY AND DRAG A COLD FRONT OVER LAKE SUPERIOR
LATE IN THE DAY. ANOTHER QUICK MOVING WEAK HIGH PRESSURE RIDGE
AVERAGING 30.0 INCHES WILL CROSS THE REGION LATE SUNDAY INTO MONDAY
AS LOW PRESSURE AVERAGING 29.5 INCHES PUSHES INTO CENTRAL CANADA.
THIS LOW WILL SHIFT TO HUDSON BAY BY TUESDAY AFTERNOON WHILE
DRAGGING A TROUGH AVERAGING 29.9 INCHES ACROSS LAKE SUPERIOR.

LSZ162-060500-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
355 PM EST THU MAR 5 2015

.LATE THIS AFTERNOON...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES CALM
TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. FLURRIES AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KNOTS. FLURRIES. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.
WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW IN THE
MORNING. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

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

$$

LSZ263-060500-
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 PM EST THU MAR 5 2015

.LATE THIS AFTERNOON...SOUTHWEST WINDS 15 TO 25 KNOTS.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. FLURRIES AFTER
MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS IN THE AFTERNOON. FLURRIES.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW AFTER MIDNIGHT.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS.

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

$$

LSZ264-060500-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
355 PM EST THU MAR 5 2015

.LATE THIS AFTERNOON...SOUTHWEST WINDS 15 TO 25 KNOTS. ISOLATED
SNOW SHOWERS.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. FLURRIES AFTER
MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 20 TO 30 KNOTS VEERING WEST IN THE
AFTERNOON. A SLIGHT CHANCE OF SNOW IN THE MORNING...THEN FLURRIES
IN THE AFTERNOON.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. SNOW LIKELY AFTER MIDNIGHT.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTH IN THE
AFTERNOON. A CHANCE OF SNOW.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST.

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

$$

LSZ265-060500-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
355 PM EST THU MAR 5 2015

.LATE THIS AFTERNOON...WEST WINDS 5 TO 15 KNOTS. ISOLATED SNOW
SHOWERS.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. FLURRIES AFTER MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS IN THE AFTERNOON. FLURRIES.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW AFTER MIDNIGHT.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST.

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

$$

LSZ266-060500-
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 PM EST THU MAR 5 2015

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. ISOLATED SNOW
SHOWERS.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. ISOLATED SNOW SHOWERS
IN THE EVENING. FLURRIES AFTER MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST IN THE
AFTERNOON. FLURRIES.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW AFTER MIDNIGHT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST IN
THE AFTERNOON. A CHANCE OF SNOW.
.SATURDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST
AFTER MIDNIGHT.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST.

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

$$

LSZ267-060500-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
355 PM EST THU MAR 5 2015

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. ISOLATED SNOW
SHOWERS.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. ISOLATED SNOW SHOWERS
IN THE EVENING. FLURRIES AFTER MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KNOTS. FLURRIES IN THE
MORNING...THEN A CHANCE OF SNOW IN THE AFTERNOON.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH AFTER
MIDNIGHT. A CHANCE OF SNOW.
.SATURDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. SNOW LIKELY IN THE MORNING...THEN A CHANCE OF SNOW IN
THE AFTERNOON.
.SATURDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST
AFTER MIDNIGHT.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS.

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

$$

LSZ261-060500-
MAFOR 0522/
SUPERIOR WEST 12530 13520 13530. WAVES OMITTED FOR MOSTLY ICE
COVERED AREAS.

SUPERIOR NORTH CENTRAL 13530 13540 12640. WAVES OMITTED FOR
MOSTLY ICE COVERED AREAS.

SUPERIOR SOUTH CENTRAL 11610 14520 11520 11620 11530. WAVES
OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR EAST 11510 14520 13530. CHANCE OF SNOW LATE FRIDAY.
WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

PETRO


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