Great Lakes Forecast
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000
FZUS63 KMQT 260240
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
940 PM EST SAT FEB 25 2017

.SYNOPSIS...A 30.2 INCH HIGH PRESSURE CENTERED OVER THE LOWER
MISSISSIPPI VALLEY WILL REACH THE SOUTHEAST STATES ON SUNDAY...
EXTENDING A 29.9 INCH RIDGE AXIS INTO THE UPPER LAKES OVERNIGHT.
A LOW PRESSURE TROUGH OF 29.7 INCHES WILL CROSS THE UPPER GREAT
LAKES ON SUNDAY AHEAD OF A 30.1 INCH HIGH PRESSURE THAT WILL
FOLLOW ACROSS THE GREAT LAKES SUNDAY NIGHT AND MONDAY. AFTER THIS
HIGH SHIFTS INTO NEW ENGLAND ON TUESDAY...A 29.7 INCH LOW PRESSURE
DEVELOPING OVER THE CENTRAL PLAINS ON MONDAY NIGHT WILL MOVE INTO
THE NORTH CENTRAL GREAT LAKES ON TUESDAY. ALTHOUGH THIS LOW WILL
EXIT TOWARD NEW ENGLAND ON WEDNESDAY...A LOW PRESSURE TROUGH
AVERAGING 30.0 INCHES WILL LINGER BACK INTO THE UPPER GREAT LAKES.
A 30.2 INCH RIDGE MOVES OVER THE UPPER GREAT LAKES ON THURSDAY.

LSZ162-261045-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
940 PM EST SAT FEB 25 2017 /840 PM CST SAT FEB 25 2017/

.REST OF TONIGHT...WEST WINDS 10 TO 20 KNOTS. SCATTERED SNOW
SHOWERS. WAVES 1 TO 3 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. NUMEROUS SNOW SHOWERS IN THE MORNING...
THEN SCATTERED SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO
CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
IN THE AFTERNOON. ISOLATED SNOW SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. NUMEROUS SNOW SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. NUMEROUS SNOW SHOWERS. RAIN SHOWERS
LIKELY IN THE AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. SCATTERED SNOW
SHOWERS. FREEZING SPRAY AFTER MIDNIGHT. WAVES BUILDING TO 4 TO
7 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES SUBSIDING
TO 1 TO 3 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.

$$

LSZ263-261045-
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-
940 PM EST SAT FEB 25 2017

.REST OF TONIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES 3 TO
5 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. NUMEROUS SNOW SHOWERS. WAVES SUBSIDING
TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES BUILDING
TO 2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS. SCATTERED SNOW SHOWERS. A
SLIGHT CHANCE OF DRIZZLE IN THE AFTERNOON. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. A CHANCE OF
DRIZZLE AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. NUMEROUS SNOW SHOWERS WITH POCKETS OF
RAIN SHOWERS. WAVES BUILDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 20 TO 30 KNOTS. SCATTERED SNOW
SHOWERS. FREEZING SPRAY AFTER MIDNIGHT. WAVES BUILDING TO 5 TO
8 FEET.
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS. FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES SUBSIDING
TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 2 TO 4 FEET.

$$

LSZ264-261045-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
940 PM EST SAT FEB 25 2017

.REST OF TONIGHT...WEST WINDS 15 TO 25 KNOTS. SCATTERED SNOW
SHOWERS BECOMING NUMEROUS AFTER MIDNIGHT. WAVES 4 TO 7 FEET
SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. NUMEROUS SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES
BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS. SCATTERED SNOW SHOWERS. A
CHANCE OF DRIZZLE IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 2 TO 4 FEET.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. SCATTERED SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS IN THE AFTERNOON. NUMEROUS SNOW SHOWERS...POSSIBLY MIXED
WITH RAIN. WAVES BUILDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO
GALES TO 35 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS.
FREEZING SPRAY AFTER MIDNIGHT. WAVES BUILDING TO 6 TO 9 FEET.
.WEDNESDAY...NORTHEAST WINDS 20 TO 30 KNOTS BECOMING NORTH 15 TO
25 KNOTS. FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES SUBSIDING
TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. SCATTERED SNOW SHOWERS. FREEZING SPRAY. WAVES BUILDING
TO 3 TO 6 FEET.

$$

LSZ265-261045-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
940 PM EST SAT FEB 25 2017

.REST OF TONIGHT...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES 3 TO 6 FEET
SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. NUMEROUS SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS. SCATTERED SNOW SHOWERS. A
SLIGHT CHANCE OF DRIZZLE IN THE AFTERNOON. WAVES BUILDING TO 1 TO
3 FEET.
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS BACKING NORTH IN THE
AFTERNOON. SCATTERED SNOW SHOWERS AND A CHANCE OF DRIZZLE IN THE
MORNING...THEN SNOW SHOWERS...POSSIBLY MIXED WITH RAIN IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. NUMEROUS SNOW SHOWERS IN THE
EVENING...THEN SCATTERED SNOW SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 5 TO 8 FEET.
.WEDNESDAY...NORTHEAST WINDS 20 TO 30 KNOTS BECOMING NORTH 15 TO
25 KNOTS. FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES SUBSIDING
TO 2 TO 4 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 20 TO
30 KNOTS. NUMEROUS SNOW SHOWERS. FREEZING SPRAY. WAVES SUBSIDING
TO 1 TO 3 FEET...THEN BUILDING TO 3 TO 6 FEET.

$$

LSZ266-261045-
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-
940 PM EST SAT FEB 25 2017

.REST OF TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING
SOUTHWEST 15 TO 25 KNOTS AFTER MIDNIGHT. A FEW GALE FORCE GUSTS TO
35 KNOTS INTO THE EARLY MORNING HOURS. FREEZING SPRAY LATE IN THE
EVENING. SCATTERED SNOW SHOWERS BECOMING NUMEROUS AFTER MIDNIGHT.
WAVES 6 TO 9 FEET SUBSIDING TO 3 TO 5 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. NUMEROUS SNOW SHOWERS. WAVES SUBSIDING
TO 2 TO 4 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES
BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
IN THE AFTERNOON. SCATTERED SNOW SHOWERS. A SLIGHT CHANCE OF
DRIZZLE IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 2 TO 4 FEET.
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO
1 TO 3 FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS. SCATTERED SNOW SHOWERS AND
A CHANCE OF DRIZZLE IN THE MORNING. RAIN SHOWERS LIKELY. NUMEROUS
SNOW SHOWERS...POSSIBLY MIXED WITH SLEET IN THE AFTERNOON. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. NUMEROUS SNOW SHOWERS...POSSIBLY
MIXED WITH RAIN IN THE EVENING...THEN SCATTERED SNOW SHOWERS
AFTER MIDNIGHT. FREEZING SPRAY AFTER MIDNIGHT. WAVES BUILDING TO
6 TO 9 FEET.
.WEDNESDAY...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 15 TO
25 KNOTS. FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES SUBSIDING
TO 3 TO 5 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. NUMEROUS SNOW SHOWERS. FREEZING SPRAY. WAVES SUBSIDING
TO 2 TO 4 FEET...THEN BUILDING TO 4 TO 7 FEET.

$$

LSZ267-261045-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
940 PM EST SAT FEB 25 2017

.REST OF TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST
15 TO 25 KNOTS AFTER MIDNIGHT. A FEW GALE FORCE GUSTS TO 35 KNOTS
INTO THE EARLY MORNING HOURS. FREEZING SPRAY LATE IN THE EVENING.
NUMEROUS SNOW SHOWERS. WAVES 7 TO 10 FEET SUBSIDING TO 3 TO 6
FEET.
.SUNDAY...SOUTHWEST WINDS 15 TO 25 KNOTS. NUMEROUS SNOW SHOWERS.
WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES
BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS IN THE AFTERNOON. SCATTERED SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS. SCATTERED SNOW SHOWERS AND
A CHANCE OF DRIZZLE IN THE MORNING...THEN RAIN AND SNOW SHOWERS...
POSSIBLY MIXED WITH SLEET IN THE AFTERNOON. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
20 TO 30 KNOTS AFTER MIDNIGHT. NUMEROUS SNOW SHOWERS...POSSIBLY
MIXED WITH RAIN IN THE EVENING...THEN SCATTERED SNOW SHOWERS
AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET.
.WEDNESDAY...NORTHEAST WINDS 20 TO 30 KNOTS BACKING NORTH.
SCATTERED SNOW SHOWERS. FREEZING SPRAY. WAVES BUILDING TO 5 TO
8 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. SCATTERED SNOW SHOWERS...THEN NUMEROUS SNOW SHOWERS.
FREEZING SPRAY. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO
3 TO 6 FEET.

$$
LSZ261-261045-
MAFOR 2604/
SUPERIOR WEST 12630 11627 11617 11707 11720 12730. SCATTERED SNOW
SHOWERS AFTER MIDNIGHT OVERNIGHT. SCATTERED SNOW SHOWERS LATE
SUNDAY. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 11630 11637 12627 12717 11730 11740.
SCATTERED SNOW SHOWERS LATE THIS EVENING AND SUNDAY EVENING.
WAVES 2 TO 5 FEET.

SUPERIOR SOUTH CENTRAL 11630 11530 12520 11527 11617 11730 11740.
SCATTERED SNOW SHOWERS THROUGH MID MORNING SUNDAY. SCATTERED SNOW
SHOWERS SUNDAY EVENING. WAVES 4 TO 7 FEET SUBSIDING TO 1 TO 5
FEET OVERNIGHT AND SUNDAY.

SUPERIOR EAST 11747 19757 11637 13537 11527 11647 11740.
SCATTERED SNOW SHOWERS SUNDAY EVENING. WAVES 5 TO 8 FEET
OVERNIGHT. WAVES 3 TO 6 FEET SUNDAY AND SUNDAY EVENING.

$$

PETRO


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