Great Lakes Forecast
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FZUS63 KMQT 262045
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
345 PM EST SUN FEB 26 2017

.SYNOPSIS...A LOW PRESSURE TROUGH AVERAGING 29.7 INCHES WILL EXIT
THE UPPER GREAT LAKES TONIGHT ON THE NORTHWEST FLANK OF A 30.3 INCH
HIGH PRESSURE DRIFTING THROUGH THE SOUTHEAST STATES. THIS WILL ALLOW
ALLOW A 30.1 INCH HIGH PRESSURE RIDGE AXIS TO DRIFT ACROSS LAKE
SUPERIOR. AFTER THIS RIDGE SHIFTS INTO NEW ENGLAND ON TUESDAY...A
29.6 INCH LOW PRESSURE DEVELOPING OVER THE CENTRAL PLAINS ON MONDAY
NIGHT WILL MOVE NORTHEAST ACROSS LOWER MICHIGAN ON TUESDAY NIGHT AND
OVER SOUTHEAST ONTARIO THROUGH WEDNESDAY. ALTHOUGH THIS LOW WILL
EXIT EAST INTO THE CANADIAN MARITIMES ON THURSDAY...A LOW PRESSURE
TROUGH AVERAGING 30.0 INCHES WILL LINGER BACK INTO THE UPPER GREAT
LAKES WHILE A 30.5 INCH HIGH PRESSURE BUILDS INTO SOUTH CENTRAL
CANADA. THE RIDGE SHIFTS OVER THE UPPER GREAT LAKES ON FRIDAY WHILE
THE TROUGH EXITS.

LSZ162-270445-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
345 PM EST SUN FEB 26 2017 /245 PM CST SUN FEB 26 2017/

.LATE THIS AFTERNOON...WEST WINDS 15 TO 25 KNOTS. WAVES 2 TO
4 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES
CALM TO 2 FEET.
.MONDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BACKING EAST AFTER
MIDNIGHT. A CHANCE OF SNOW SHOWERS...POSSIBLY MIXED WITH RAIN AND
FREEZING RAIN AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. SNOW SHOWERS...POSSIBLY MIXED WITH
RAIN SHOWERS AND FREEZING RAIN. WAVES BUILDING TO 4 TO 7 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. NUMEROUS SNOW SHOWERS IN THE EVENING...
THEN SCATTERED SNOW SHOWERS AFTER MIDNIGHT. FREEZING SPRAY AFTER
MIDNIGHT. WAVES 4 TO 7 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS. FREEZING SPRAY IN THE
MORNING. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS. SCATTERED SNOW
SHOWERS. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. SCATTERED SNOW SHOWERS.
WAVES BUILDING TO 2 TO 4 FEET.

$$

LSZ263-270445-
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-
345 PM EST SUN FEB 26 2017

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

$$

LSZ264-270445-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
345 PM EST SUN FEB 26 2017

.LATE THIS AFTERNOON...NORTHWEST WINDS 20 TO 30 KNOTS. A SLIGHT
CHANCE OF SNOW SHOWERS. WAVES 2 TO 4 FEET.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A SLIGHT
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS...POSSIBLY MIXED WITH RAIN AFTER MIDNIGHT. WAVES BUILDING
TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST IN
THE AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING.
SNOW SHOWERS...POSSIBLY MIXED WITH FREEZING RAIN. RAIN SHOWERS IN
THE AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET.
.TUESDAY NIGHT...NORTHEAST GALES TO 35 KNOTS BACKING NORTH AFTER
MIDNIGHT. NUMEROUS SNOW SHOWERS IN THE EVENING...THEN SCATTERED
SNOW SHOWERS AFTER MIDNIGHT. FREEZING SPRAY AFTER MIDNIGHT. WAVES
BUILDING TO 6 TO 10 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY. SCATTERED SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS. SCATTERED SNOW
SHOWERS. FREEZING SPRAY. WAVES BUILDING TO 3 TO 5 FEET...THEN
SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST. SCATTERED
SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING
TO 2 TO 4 FEET.

$$

LSZ265-270445-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
345 PM EST SUN FEB 26 2017

.LATE THIS AFTERNOON...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES 1 TO 3 FEET.
.TONIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS IN THE MORNING. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. SCATTERED RAIN AND
SNOW SHOWERS IN THE MORNING. A CHANCE OF SLEET. RAIN SHOWERS...
POSSIBLY MIXED WITH SNOW SHOWERS IN THE AFTERNOON. WAVES BUILDING
TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH
20 TO 30 KNOTS AFTER MIDNIGHT. NUMEROUS SNOW SHOWERS IN THE
EVENING...THEN SCATTERED SNOW SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 6 TO 9 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY. SCATTERED SNOW
SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING.
SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. NUMEROUS SNOW SHOWERS. FREEZING SPRAY. WAVES SUBSIDING
TO CALM TO 2 FEET...THEN BUILDING TO 3 TO 5 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST. SCATTERED
SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING
TO 1 TO 3 FEET.

$$

LSZ266-270445-
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-
345 PM EST SUN FEB 26 2017

.LATE THIS AFTERNOON...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES 3 TO 5 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A SLIGHT
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO 7 FEET...THEN
SUBSIDING TO 2 TO 4 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 2 TO 4 FEET.
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
RAIN AND SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...SOUTH WINDS 15 TO 25 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. RAIN SHOWERS...POSSIBLY MIXED WITH SNOW SHOWERS AND
SLEET. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 3 TO
5 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH
20 TO 30 KNOTS AFTER MIDNIGHT. NUMEROUS SNOW SHOWERS...POSSIBLY
MIXED WITH RAIN AND SLEET LIKELY IN THE EVENING...THEN SCATTERED
SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 6 TO 10 FEET.
.WEDNESDAY...NORTH GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY. SCATTERED SNOW
SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. FREEZING SPRAY IN
THE EVENING. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. SCATTERED SNOW SHOWERS...THEN NUMEROUS SNOW SHOWERS.
FREEZING SPRAY. WAVES BUILDING TO 3 TO 6 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST. SCATTERED
SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO
3 TO 5 FEET.

$$

LSZ267-270445-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
345 PM EST SUN FEB 26 2017

.LATE THIS AFTERNOON...WEST WINDS 15 TO 25 KNOTS. SNOW SHOWERS
LIKELY. WAVES 3 TO 5 FEET.
.TONIGHT...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE EVENING...
THEN A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO
5 TO 8 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
RAIN AND SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KNOTS. SLEET LIKELY AND SNOW
SHOWERS LIKELY...POSSIBLY MIXED WITH FREEZING RAIN IN THE
MORNING. RAIN SHOWERS LIKELY. SCATTERED SNOW SHOWERS AND SLEET IN
THE AFTERNOON. WAVES 1 TO 3 FEET.
.TUESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTH 20 TO
30 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY...POSSIBLY MIXED
WITH SLEET IN THE EVENING. SCATTERED SNOW SHOWERS. A CHANCE OF
RAIN SHOWERS AND FREEZING RAIN AFTER MIDNIGHT. WAVES BUILDING TO
3 TO 6 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY.
SCATTERED SNOW SHOWERS. WAVES BUILDING TO 4 TO 7 FEET...THEN
SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. FREEZING SPRAY IN
THE EVENING. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. SCATTERED SNOW SHOWERS...THEN NUMEROUS SNOW SHOWERS.
FREEZING SPRAY. WAVES BUILDING TO 3 TO 6 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST.
SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.

$$

LSZ261-270445-
MAFOR 2622/
SUPERIOR WEST 11640 11630 11720 11610 11500 12410 11300. WAVES 2
TO 4 FEET BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 1 TO 3 FEET
TONIGHT. WAVES 1 FOOT OR LESS MONDAY.

SUPERIOR NORTH CENTRAL 12740 11730 11720 11610 11510 11410 11420.
A CHANCE OF SNOW SHOWERS LATE TONIGHT AND MONDAY MORNING. WAVES 3
TO 6 FEET SUBSIDING TO 2 TO 4 FEET TONIGHT. WAVES 1 TO 3 FEET
MONDAY.

SUPERIOR SOUTH CENTRAL 11630 11641 11741 11620 11610 11510 12420.
FREEZING SPRAY LATE THIS EVENING. A CHANCE OF SNOW SHOWERS EARLY
THIS EVENING. WAVES 2 TO 3 FEET BUILDING TO 3 TO 6 FEET TONIGHT.
WAVES 1 TO 3 FEET MONDAY.

SUPERIOR EAST 11637 12740 11730 11620 11610 11520 11420. A CHANCE
OF SNOW SHOWERS LATE THIS EVENING THROUGH MONDAY MORNING. WAVES 3
TO 5 FEET BUILDING TO 5 TO 8 FEET TONIGHT. WAVES 3 TO 5 FEET
SUBSIDING TO 2 TO 3 FEET MONDAY.

$$

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