Great Lakes Forecast
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000
FZUS63 KMQT 202105
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
405 PM EST THU NOV 20 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.5 INCH LOW PRESSURE OVER QUEBEC WILL MOVE EAST
TONIGHT. A 30.3 INCH HIGH PRESSURE CENTERED OVER THE CENTRAL PLAINS
WILL REACH THE OHIO VALLEY FRIDAY AND THE MID ATLANTIC STATES SATURDAY.
AS THIS HIGH DRIFTS OFF THE EAST COAST ON SUNDAY...A 29.1 INCH LOW
PRESSURE SYSTEM WILL TAKE SHAPE IN THE MID MISSISSIPPI VALLEY.
EXPECT THIS LOW TO REACH THE UPPER GREAT LAKES ON MONDAY AFTERNOON
WHILE DEEPENING TO 28.8 INCHES AND THEN REACH QUEBEC TUESDAY.

LSZ162-210515-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
405 PM EST THU NOV 20 2014 /305 PM CST THU NOV 20 2014/

.LATE THIS AFTERNOON...NORTHWEST WINDS 15 TO 25 KNOTS. SCATTERED
SNOW SHOWERS. WAVES 3 TO 5 FEET.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST AFTER
MIDNIGHT. ISOLATED SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE
GUSTS TO 35 KNOTS THROUGH MIDNIGHT. WAVES BUILDING TO 8 TO 11
FEET...THEN SUBSIDING TO 6 TO 9 FEET.
.SATURDAY...SOUTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST IN THE
AFTERNOON. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES BUILDING
TO 3 TO 6 FEET.
.MONDAY...NORTH WINDS 20 TO 30 KNOTS. SNOW...POSSIBLY MIXED WITH
RAIN...THEN A CHANCE OF SNOW. WAVES BUILDING TO 5 TO 8 FEET.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO 1 TO
3 FEET.

$$

LSZ263-210515-
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-
405 PM EST THU NOV 20 2014

...GALE WATCH IN EFFECT FROM FRIDAY EVENING THROUGH SATURDAY
MORNING...

.LATE THIS AFTERNOON...NORTHWEST WINDS 15 TO 25 KNOTS. FREEZING
SPRAY. SCATTERED SNOW SHOWERS. WAVES 4 TO 7 FEET.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES SUBSIDING
TO 2 TO 4 FEET.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS IN THE MORNING.
WAVES BUILDING TO 7 TO 10 FEET.
.FRIDAY NIGHT...SOUTHWEST GALES TO 35 KNOTS. WAVES BUILDING TO
10 TO 14 FEET...THEN SUBSIDING TO 9 TO 12 FEET.
.SATURDAY...SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET.
.SATURDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN LIKELY. WAVES BUILDING TO
4 TO 7 FEET.
.MONDAY...NORTH GALES TO 35 KNOTS. RAIN...SNOW. WAVES BUILDING TO
8 TO 11 FEET.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. A CHANCE OF SNOW. WAVES SUBSIDING TO 2 TO 4 FEET.

$$

LSZ264-210515-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
405 PM EST THU NOV 20 2014

...GALE WATCH IN EFFECT FROM FRIDAY EVENING THROUGH SATURDAY
MORNING...

.LATE THIS AFTERNOON...NORTHWEST WINDS 15 TO 25 KNOTS. FREEZING
SPRAY. NUMEROUS SNOW SHOWERS. WAVES 3 TO 6 FEET.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. SCATTERED
SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 20 TO
30 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS. WAVES SUBSIDING
TO 2 TO 4 FEET...THEN BUILDING TO 6 TO 9 FEET.
.FRIDAY NIGHT...SOUTHWEST GALES TO 35 KNOTS. A SLIGHT CHANCE OF
DRIZZLE AND FREEZING DRIZZLE AFTER MIDNIGHT. WAVES BUILDING TO
10 TO 14 FEET...THEN SUBSIDING TO 9 TO 12 FEET.
.SATURDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF DRIZZLE AND SNOW.
WAVES SUBSIDING TO 3 TO 6 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO
CALM TO 2 FEET...THEN BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST
20 TO 30 KNOTS AFTER MIDNIGHT. RAIN. WAVES BUILDING TO 4 TO
7 FEET.
.MONDAY...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH GALES TO
40 KNOTS. RAIN...SNOW. WAVES BUILDING TO 8 TO 11 FEET.
.TUESDAY...NORTH GALES TO 35 KNOTS DIMINISHING TO 15 TO 25 KNOTS.
A CHANCE OF SNOW. WAVES SUBSIDING TO 3 TO 5 FEET.

$$

LSZ265-210515-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
405 PM EST THU NOV 20 2014

.LATE THIS AFTERNOON...NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING
SPRAY. NUMEROUS SNOW SHOWERS. WAVES 4 TO 7 FEET.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST AFTER
MIDNIGHT. FREEZING SPRAY IN THE EVENING. NUMEROUS SNOW SHOWERS IN
THE EVENING...THEN SCATTERED SNOW SHOWERS AFTER MIDNIGHT. WAVES
SUBSIDING TO 3 TO 5 FEET.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KNOTS. ISOLATED SNOW SHOWERS
IN THE MORNING. WAVES SUBSIDING TO 2 TO 4 FEET...THEN BUILDING TO
3 TO 5 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 5 TO 8 FEET...
THEN SUBSIDING TO 3 TO 6 FEET.
.SATURDAY...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST IN THE
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF RAIN. WAVES BUILDING TO
2 TO 4 FEET.
.SUNDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. RAIN. WAVES BUILDING
TO 4 TO 7 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS. RAIN LIKELY. SNOW LIKELY. WAVES SUBSIDING TO 1 TO
3 FEET...THEN BUILDING TO 8 TO 11 FEET.
.TUESDAY...NORTH GALES TO 35 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. SNOW LIKELY...THEN A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET.

$$

LSZ266-210515-
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-
405 PM EST THU NOV 20 2014

.LATE THIS AFTERNOON...NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING
SPRAY. SNOW SHOWERS. WAVES 6 TO 9 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. NUMEROUS
SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 20 TO
30 KNOTS IN THE AFTERNOON. SCATTERED SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET...THEN BUILDING TO 4 TO 7 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE
GUSTS TO 35 KNOTS THROUGH MIDNIGHT. A SLIGHT CHANCE OF DRIZZLE...
FREEZING DRIZZLE AND SNOW AFTER MIDNIGHT. WAVES BUILDING TO 10 TO 14
FEET.
.SATURDAY...SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF FREEZING DRIZZLE IN
THE MORNING. A SLIGHT CHANCE OF DRIZZLE AND SNOW. WAVES SUBSIDING
TO 4 TO 7 FEET.
.SATURDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. RAIN LIKELY IN THE AFTERNOON. WAVES BUILDING TO 3 TO
5 FEET.
.SUNDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. RAIN. WAVES BUILDING
TO 4 TO 7 FEET.
.MONDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS. RAIN LIKELY...THEN SNOW LIKELY. WAVES BUILDING TO 4 TO
8 FEET.
.TUESDAY...NORTH GALES TO 35 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS. SNOW LIKELY...THEN A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 6 FEET.

$$

LSZ267-210515-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
405 PM EST THU NOV 20 2014

.LATE THIS AFTERNOON...NORTHWEST WINDS 20 TO 30 KNOTS. SNOW
SHOWERS. WAVES 6 TO 9 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SNOW SHOWERS. WAVES SUBSIDING TO 3 TO
6 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 20 TO
30 KNOTS IN THE AFTERNOON. NUMEROUS SNOW SHOWERS IN THE MORNING...
THEN ISOLATED SNOW SHOWERS IN THE AFTERNOON. WAVES BUILDING TO
4 TO 7 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE
GUSTS TO 35 KNOTS THROUGH MIDNIGHT. A SLIGHT CHANCE OF DRIZZLE...
FREEZING DRIZZLE AND SNOW AFTER MIDNIGHT. WAVES BUILDING TO 7 TO 11
FEET.
.SATURDAY...SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF FREEZING DRIZZLE IN
THE MORNING. A SLIGHT CHANCE OF DRIZZLE AND SNOW. WAVES SUBSIDING
TO 3 TO 6 FEET...THEN BUILDING TO 4 TO 7 FEET.
.SATURDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST 15 TO
25 KNOTS IN THE AFTERNOON. RAIN LIKELY IN THE AFTERNOON. WAVES
BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 20 TO 30 KNOTS BACKING EAST AFTER
MIDNIGHT. RAIN. WAVES BUILDING TO 3 TO 6 FEET.
.MONDAY...SOUTH WINDS 20 TO 30 KNOTS VEERING WEST. RAIN LIKELY...
THEN SNOW LIKELY. WAVES SUBSIDING TO 3 TO 5 FEET...THEN BUILDING
TO 7 TO 10 FEET.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. SNOW LIKELY...THEN A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET.

$$

LSZ261-210515-
MAFOR 2022/
SUPERIOR WEST 12730 11720 11620 11630 12530 11540. SCATTERED SNOW
SHOWERS TONIGHT. WAVES 2 TO 5 FEET TONIGHT...BUILDING TO 5 TO 8 FEET
FRIDAY.

SUPERIOR NORTH CENTRAL 11737 12730 11720 11620 11630 12540. FREEZING
SPRAY THIS EVENING. SCATTERED SNOW SHOWERS TONIGHT AND FRIDAY. WAVES
3 TO 7 FEET.

SUPERIOR SOUTH CENTRAL 12747 12737 12630 12530. FREEZING SPRAY THIS
EVENING. SCATTERED SNOW SHOWERS FRIDAY MORNING. WAVES 2 TO 7 FEET.

SUPERIOR EAST 13737 12727 11637 11530 11540. FREEZING SPRAY THIS
EVENING. SCATTERED SNOW SHOWERS FRIDAY AFTERNOON. WAVES 6 TO 9 FEET
SUBSIDING TO 5 TO 7 FEET TONIGHT. WAVES 4 TO 7 FEET FRIDAY.

$$

PETRO





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