NWS Forecast

FZUS63 KMQT 160131
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
931 PM EDT SUN MAR 15 2009

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

SYNOPSIS
30.6 INCH HIGH PRESSURE OVER JAMES BAY BUILDS OVER
QUEBEC TONIGHT...REACHING ITS PEAK INTENSITY AT 30.7
INCHES...BEFORE BEGINNING TO SLIDE EAST AND WEAKEN ON MONDAY.
ALSO...A WEAK FRONT EXTENDING FAR TO THE EAST OF 29.3 INCH LOW
PRESSURE OVER ALBERTA LINGERS OVER LAKE SUPERIOR OVERNIGHT AND
INTO MONDAY MORNING. FROM MONDAY MORNING THROUGH TUESDAY...THE
ALBERTA LOW BECOMES WELL DEVELOPED WHILE MOVING TOWARD HUDSON
BAY...FIRST PUSHING THE STATIONARY LAKE SUPERIOR FRONT BACK INTO
ONTARIO...AND THEN DRAGGING A COLD FRONT FROM WEST TO EAST ACROSS
LAKES SUPERIOR AND MICHIGAN ON TUESDAY. THIS ASSISTS THE QUEBEC
LOW IN SPREADING OVER NEW ENGLAND AND WEAKENING TO 30.3 INCHES. ON
WEDNESDAY...THE LOW EXITS...HEADING FOR THE NORTH ATLANTIC...AND
30.5 INCH HIGH PRESSURE BUILDS INTO THE NORTHERN PLAINS...REACHING
THE WESTERN GREAT LAKES THURSDAY AND DOMINATING THE REGION THROUGH
SATURDAY.

LSZ162-263-160830-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
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-
931 PM EDT SUN MAR 15 2009 /831 PM CDT SUN MAR 15 2009/

REST OF TONIGHT
SOUTH WINDS 10 TO 20 KNOTS.

MONDAY
SOUTH WINDS 5 TO 15 KNOTS. 

MONDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS.

TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON.

TUESDAY NIGHT
WEST WINDS 10 TO 20 KNOTS.

WEDNESDAY
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS BY MID AFTERNOON. 

WEDNESDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.

THURSDAY
NORTH WINDS 5 TO 15 KNOTS VEERING SOUTH. A SLIGHT
CHANCE OF SNOW SHOWERS.

FRIDAY
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. A CHANCE
OF RAIN AND SNOW SHOWERS.

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

LSZ264-160830-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
931 PM EDT SUN MAR 15 2009

REST OF TONIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT.

MONDAY
SOUTH WINDS 15 TO 25 KNOTS. 

MONDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT.

TUESDAY
SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST.

TUESDAY NIGHT
WEST WINDS 15 TO 25 KNOTS.

WEDNESDAY
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST.

WEDNESDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.

THURSDAY
NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. A SLIGHT
CHANCE OF SNOW SHOWERS.

FRIDAY
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. A CHANCE
OF RAIN AND SNOW SHOWERS.

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

LSZ265-160830-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
931 PM EDT SUN MAR 15 2009

REST OF TONIGHT
SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT.

MONDAY
SOUTH WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.

MONDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.

TUESDAY
SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.

TUESDAY NIGHT
WEST WINDS 15 TO 25 KNOTS. WAVES 1 TO 3 FEET.

WEDNESDAY
WEST WINDS 15 TO 25 KNOTS. WAVES 1 TO 3 FEET.

WEDNESDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
WAVES 1 TO 3 FEET.

THURSDAY
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
CALM TO 2 FEET.

FRIDAY
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. A SLIGHT
CHANCE OF RAIN AND SNOW SHOWERS. WAVES CALM TO 2 FEET.

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

LSZ266-267-160830-
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-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
931 PM EDT SUN MAR 15 2009

REST OF TONIGHT
SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 2 TO
4 FEET.

MONDAY
SOUTH WINDS TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.

MONDAY NIGHT
SOUTH WINDS 15 TO 25 KNOTS. WAVES 3 TO 5 FEET.

TUESDAY
SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST BY MID
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.

TUESDAY NIGHT
WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
2 TO 4 FEET.

WEDNESDAY
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST BY MID
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.

WEDNESDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
WAVES 3 TO 5 FEET.

THURSDAY
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 5 TO
15 KNOTS. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
CALM TO 2 FEET.

FRIDAY
SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS. WAVES
BUILDING TO 3 TO 5 FEET.

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

LSZ261-160830-
MAFOR 1603/
SUPERIOR WEST 12310 12420 13410 11400. WAVES OMITTED FOR MOSTLY
ICE COVERED AREAS.

SUPERIOR NORTH CENTRAL 13320 13430 12420. WAVES OMITTED FOR MOSTLY
ICE COVERED AREAS.

SUPERIOR SOUTH CENTRAL 11420 14430 11430 12420. WAVES 1 TO 4 FEET.
220103.

SUPERIOR EAST 12420 12430 11440 13430. WAVES 1 TO 5 FEET. 220103.

KOLBUS