Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 111959
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
359 PM EDT FRI APR 11 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.8 INCH LOW SOUTHWEST OF JAMES BAY WILL SHIFT EAST
INTO QUEBEC THROUGH TONIGHT AND DRAG A 29.9 INCH TROUGH ACROSS THE
UPPER GREAT LAKES. BEHIND THIS TROUGH...A 30.1 INCH HIGH PRESSURE
RIDGE WILL NOSE SOUTH FROM CANADA AND OVER LAKE SUPERIOR BY SATURDAY
MORNING. A LOW PRESSURE TROUGH OF 29.7 INCHES DEVELOPING IN THE
PLAINS ON SATURDAY WILL MOVE OVER THE GREAT LAKES SATURDAY NIGHT AND
SUNDAY. LOW PRESSURE OF 29.6 INCHES OVER THE MID MISSISSIPPI RIVER
VALLEY ON SUNDAY EVENING WILL DEEPEN TO 29.5 INCHES AS IT MOVES OVER
THE LOWER GREAT LAKES ON MONDAY AFTERNOON. A 30.2 INCH RIDGE
EXTENDING FROM 30.4 INCH HIGH PRESSURE OVER SOUTH CENTRAL CANADA WILL
THEN BUILD ACROSS THE UPPER GREAT LAKES ON TUESDAY AND WEDNESDAY.

LSZ162-120400-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
359 PM EDT FRI APR 11 2014 /259 PM CDT FRI APR 11 2014/

.LATE THIS AFTERNOON...SOUTHWEST WINDS 5 TO 15 KNOTS. ISOLATED
RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING EAST AFTER MIDNIGHT.
A SLIGHT CHANCE OF RAIN AND SNOW AFTER MIDNIGHT. WAVES BUILDING
TO 1 TO 3 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. SNOW...POSSIBLY MIXED WITH RAIN. WAVES
BUILDING TO 3 TO 5 FEET.
.SATURDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH
AFTER MIDNIGHT. A CHANCE OF SNOW...POSSIBLY MIXED WITH RAIN
THROUGH MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

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

$$

LSZ263-120400-
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-
359 PM EDT FRI APR 11 2014

.LATE THIS AFTERNOON...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM
TO 2 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS BACKING EAST AFTER MIDNIGHT.
A SLIGHT CHANCE OF RAIN AND SNOW AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW...
POSSIBLY MIXED WITH RAIN. WAVES BUILDING TO 3 TO 5 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW...POSSIBLY MIXED WITH RAIN
IN THE EVENING. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.MONDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

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

$$

LSZ264-120400-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
359 PM EDT FRI APR 11 2014

.LATE THIS AFTERNOON...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...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 LIKELY. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES SUBSIDING
TO CALM TO 2 FEET.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.MONDAY...NORTH WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 1 TO
3 FEET.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTHEAST.
WAVES CALM TO 2 FEET.

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

$$

LSZ265-120400-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
359 PM EDT FRI APR 11 2014

.LATE THIS AFTERNOON...SOUTHWEST WINDS 5 TO 15 KNOTS.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. SNOW...MIXED WITH RAIN BY MID AFTERNOON.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW POSSIBLY MIXED WITH RAIN
IN THE EVENING.
.SUNDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT.
.MONDAY...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS.

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

$$

LSZ266-120400-
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-
359 PM EDT FRI APR 11 2014

.LATE THIS AFTERNOON...SOUTHWEST WINDS 5 TO 15 KNOTS.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW THROUGH EARLY
AFTERNOON...THEN SNOW...POSSIBLY MIXED WITH RAIN.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. RAIN LIKELY THROUGH MIDNIGHT...THEN A SLIGHT
CHANCE OF RAIN. RAIN MAY BE MIXED WITH SNOW AT TIMES.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT.
.MONDAY...NORTH WINDS 20 TO 30 KNOTS.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS.

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

$$

LSZ267-120400-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
359 PM EDT FRI APR 11 2014

.LATE THIS AFTERNOON...SOUTHWEST WINDS 5 TO 15 KNOTS.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A CHANCE OF SNOW. RAIN LIKELY BY MID AFTERNOON.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. RAIN LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT...THEN A SLIGHT CHANCE OF RAIN.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.
.MONDAY...NORTH WINDS 15 TO 25 KNOTS.
.MONDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS.

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

$$

LSZ261-120400-
MAFOR 1121/
SUPERIOR WEST 11520 11610 11110 11210 11220 13237. SLIGHT CHANCE OF
SNOW OVERNIGHT. CHANCE OF SNOW SATURDAY MORNING. WAVES 1 FOOT OR LESS
TONIGHT BUILDING TO 3 TO 5 FEET SATURDAY.

SUPERIOR NORTH CENTRAL 12610 11810 12110 12220 11237. SLIGHT CHANCE
OF SNOW ON SATURDAY MORNING. WAVES 2 FEET OR LESS.

SUPERIOR SOUTH CENTRAL 11600 11710 11700 11800 11100 11210 11220
11227. CHANCE OF SNOW IN THE MORNING. NOTE...WAVES OMITTED FOR
MOSTLY ICE COVERED AREAS.

SUPERIOR EAST 11500 11600 12700 11100 12210 11227. NOTE...WAVES
OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

JS





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