Great Lakes Forecast
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810
FZUS63 KMQT 252052
GLFLS

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

.SYNOPSIS...A 29.1 LOW PRESSURE SYSTEM OVER SOUTHERN QUEBEC WILL
EXIT NORTHEAST OVER NORTHERN QUEBEC TONIGHT WHILE DEEPENING TO
28.9 INCHES. EXPECT A 30.2 INCH HIGH PRESSURE CENTERED ACROSS THE
MID MISSISSIPPI RIVER VALLEY TO DRIFT INTO THE SOUTHEAST STATES
ON SUNDAY...EXTENDING A 29.9 INCH RIDGE AXIS INTO THE UPPER LAKES
THROUGH TONIGHT. A LOW PRESSURE TROUGH AVERAGING 29.7 INCHES WILL
THEN MOVE ACROSS 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.

LSZ162-260500-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
352 PM EST SAT FEB 25 2017 /252 PM CST SAT FEB 25 2017/

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. ISOLATED SNOW
SHOWERS. WAVES 2 TO 4 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 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.

$$

LSZ263-260500-
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-
352 PM EST SAT FEB 25 2017

.LATE THIS AFTERNOON...WEST WINDS 15 TO 25 KNOTS. ISOLATED SNOW
SHOWERS. WAVES 3 TO 6 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS. SCATTERED SNOW SHOWERS IN
THE EVENING...THEN NUMEROUS SNOW SHOWERS AFTER MIDNIGHT. WAVES
SUBSIDING TO 2 TO 4 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.

$$

LSZ264-260500-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
352 PM EST SAT FEB 25 2017

.LATE THIS AFTERNOON...NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING
SPRAY. SCATTERED SNOW SHOWERS. WAVES 4 TO 7 FEET.
.TONIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. SCATTERED
SNOW SHOWERS IN THE EVENING...THEN NUMEROUS SNOW SHOWERS AFTER
MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING 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.

$$

LSZ265-260500-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
352 PM EST SAT FEB 25 2017

...GALE WARNING IN EFFECT UNTIL 10 PM EST THIS EVENING...

.LATE THIS AFTERNOON...NORTHWEST WINDS 20 TO 30 KNOTS. OCCASIONAL
GALE FORCE GUSTS TO 40 KNOTS. FREEZING SPRAY. NUMEROUS SNOW
SHOWERS. WAVES 4 TO 8 FEET.
.TONIGHT...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST AFTER MIDNIGHT.
OCCASIONAL GALE FORCE GUSTS TO 35 KNOTS IN THE EVENING. SCATTERED
SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING 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.

$$

LSZ266-260500-
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-
352 PM EST SAT FEB 25 2017

...GALE WARNING IN EFFECT UNTIL 10 PM EST THIS EVENING...

.LATE THIS AFTERNOON...NORTHWEST GALES TO 35 KNOTS. FREEZING
SPRAY. NUMEROUS SNOW SHOWERS. WAVES 7 TO 10 FEET.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. OCCASIONAL GALE FORCE GUSTS TO 35 KNOTS THIS EVENING. FREEZING
SPRAY IN THE EVENING. NUMEROUS SNOW SHOWERS. WAVES 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 BUILDING
TO 3 TO 6 FEET...THEN 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.

$$

LSZ267-260500-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
352 PM EST SAT FEB 25 2017

...GALE WARNING IN EFFECT UNTIL 10 PM EST THIS EVENING...

.LATE THIS AFTERNOON...NORTHWEST GALES TO 35 KNOTS. FREEZING
SPRAY. NUMEROUS SNOW SHOWERS. WAVES 7 TO 10 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS AFTER MIDNIGHT. OCCASIONAL GALE FORCE GUSTS TO 35 KNOTS
THIS EVENING. FREEZING SPRAY IN THE EVENING. NUMEROUS SNOW
SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.SUNDAY...SOUTHWEST WINDS 15 TO 25 KNOTS. NUMEROUS SNOW SHOWERS.
WAVES BUILDING TO 3 TO 6 FEET...THEN 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.

$$

LSZ261-260500-
MAFOR 2522/
SUPERIOR WEST 11630 13620 12617 11707 11720. SCATTERED SNOW
SHOWERS TONIGHT. SCATTERED SNOW SHOWERS LATE SUNDAY. WAVES 3 TO 5
FEET SUBSIDING TO 2 TO 4 FEET TONIGHT. WAVES 1 TO 3 FEET SUNDAY.

SUPERIOR NORTH CENTRAL 11740 11731 14627 12717. FREEZING SPRAY
THIS EVENING. SCATTERED SNOW SHOWERS THIS EVENING. WAVES 4 TO 7
FEET SUBSIDING TO 3 TO 6 FEET TONIGHT. WAVES 2 TO 4 FEET SUNDAY.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11750 11630
11620 13520 11527 11617. FREEZING SPRAY THIS EVENING. SCATTERED
SNOW SHOWERS THIS EVENING...LATE TONIGHT THROUGH MID MORNING
SUNDAY. WAVES 5 TO 9 FEET SUBSIDING TO 2 TO 4 FEET TONIGHT. WAVES
2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET SUNDAY.

SUPERIOR EAST...GALE WARNING IN EFFECT...11757 12737 11627 11527
12537 11527. FREEZING SPRAY THIS EVENING. WAVES 6 TO 10 FEET
SUBSIDING TO 4 TO 6 FEET TONIGHT. WAVES 3 TO 6 FEET SUNDAY.

$$

07



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