Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 130844
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
344 AM EST MON FEB 13 2017

.SYNOPSIS...30.5 INCH HIGH PRESSURE OVER THE CENTRAL PLAINS WILL
SEND A 30.1 INCH RIDGE ACROSS THE UPPER GREAT LAKES THIS MORNING.
A TROUGH OF 29.7 INCHES WILL MOVE OVER LAKE SUPERIOR TONIGHT
AHEAD OF 29.4 INCH LOW PRESSURE MOVING SOUTHEASTWARD ACROSS
NORTHERN ONTARIO. THE LOW WILL REACH SOUTHERN ONTARIO LATE TUESDAY
NIGHT AS A 30.3 INCH RIDGE DRIFTS ACROSS THE NORTHERN PLAINS. THE
RIDGE WILL CROSS THE UPPER GREAT LAKES AT 30.0 INCHES LATE
WEDNESDAY NIGHT THROUGH THURSDAY. THE RIDGE WILL REACH THE LOWER
GREAT LAKES ON FRIDAY AS A 29.5 INCH TROUGH EDGES SOUTHWARD OVER
THE NORTHERN PLAINS.

LSZ162-131645-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
344 AM EST MON FEB 13 2017 /244 AM CST MON FEB 13 2017/

.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 3 TO 6
FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS. WAVES BUILDING
TO 3 TO 6 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES
CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. WAVES CALM
TO 2 FEET.

$$

LSZ263-131645-
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-
344 AM EST MON FEB 13 2017

.EARLY THIS MORNING...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES 1 TO
3 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET.
.TONIGHT...WEST WINDS 15 TO 25 KNOTS. ISOLATED RAIN SHOWERS IN
THE EVENING. ISOLATED SNOW SHOWERS. WAVES SUBSIDING TO 3 TO
6 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS IN THE AFTERNOON. SCATTERED SNOW SHOWERS. WAVES BUILDING
TO 4 TO 7 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET.
.WEDNESDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. WAVES CALM
TO 2 FEET.

$$

LSZ264-131645-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
344 AM EST MON FEB 13 2017

.EARLY THIS MORNING...WEST WINDS 10 TO 20 KNOTS. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET.
.TONIGHT...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. SCATTERED RAIN SHOWERS IN THE EVENING. SCATTERED
SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET.
.TUESDAY...WEST GALES TO 35 KNOTS BECOMING NORTHWEST GALES TO
40 KNOTS IN THE AFTERNOON. SCATTERED SNOW SHOWERS. FREEZING SPRAY
IN THE AFTERNOON. WAVES BUILDING TO 7 TO 10 FEET.
.TUESDAY NIGHT...NORTH GALES TO 40 KNOTS. HEAVY FREEZING SPRAY.
SNOW SHOWERS LIKELY. WAVES SUBSIDING TO 5 TO 8 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.

$$

LSZ265-131645-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
344 AM EST MON FEB 13 2017

.EARLY THIS MORNING...WEST WINDS 10 TO 20 KNOTS. WAVES 3 TO
5 FEET SUBSIDING TO 2 TO 4 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. ISOLATED RAIN SHOWERS IN THE EVENING. SCATTERED
SNOW SHOWERS. WAVES BUILDING TO 3 TO 5 FEET.
.TUESDAY...WEST GALES TO 35 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. SCATTERED SNOW SHOWERS IN THE MORNING...THEN NUMEROUS
SNOW SHOWERS IN THE AFTERNOON. WAVES BUILDING TO 5 TO 8 FEET.
.TUESDAY NIGHT...NORTH GALES TO 40 KNOTS. HEAVY FREEZING SPRAY.
SNOW SHOWERS. WAVES BUILDING TO 6 TO 10 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING.
SNOW SHOWERS LIKELY IN THE MORNING...THEN A CHANCE OF SNOW
SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. WAVES
CALM TO 2 FEET.

$$

LSZ266-131645-
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-
344 AM EST MON FEB 13 2017

.EARLY THIS MORNING...WEST WINDS 10 TO 20 KNOTS. WAVES 4 TO
7 FEET SUBSIDING TO 3 TO 6 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH IN THE
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 3 TO
6 FEET.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. SCATTERED SNOW SHOWERS...POSSIBLY MIXED WITH RAIN.
WAVES BUILDING TO 4 TO 7 FEET.
.TUESDAY...WEST GALES TO 35 KNOTS BECOMING NORTHWEST GALES TO
40 KNOTS IN THE AFTERNOON. SCATTERED SNOW SHOWERS IN THE
MORNING...THEN NUMEROUS SNOW SHOWERS IN THE AFTERNOON. WAVES
BUILDING TO 7 TO 10 FEET.
.TUESDAY NIGHT...NORTH GALES TO 40 KNOTS. FREEZING SPRAY. SNOW
SHOWERS. WAVES BUILDING TO 9 TO 12 FEET...THEN SUBSIDING TO 7 TO
10 FEET.
.WEDNESDAY...NORTH GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY. SNOW SHOWERS LIKELY.
WAVES SUBSIDING TO 3 TO 6 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.

$$

LSZ267-131645-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
344 AM EST MON FEB 13 2017

.EARLY THIS MORNING...NORTHWEST WINDS 15 TO 25 KNOTS. ISOLATED
SNOW SHOWERS. WAVES 4 TO 7 FEET.
.TODAY...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 15 TO 25 KNOTS
IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING
TO 2 TO 4 FEET.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. SCATTERED SNOW SHOWERS...POSSIBLY MIXED WITH RAIN IN
THE EVENING...THEN NUMEROUS SNOW SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS IN THE AFTERNOON. NUMEROUS SNOW SHOWERS. WAVES BUILDING
TO 6 TO 9 FEET.
.TUESDAY NIGHT...NORTH GALES TO 40 KNOTS. FREEZING SPRAY. SNOW
SHOWERS LIKELY. WAVES BUILDING TO 8 TO 11 FEET...THEN SUBSIDING
TO 6 TO 9 FEET.
.WEDNESDAY...NORTH GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTH. WAVES CALM
TO 2 FEET.
.FRIDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. WAVES
CALM TO 2 FEET.

$$

LSZ261-131645-
MAFOR 1310/
SUPERIOR WEST 11520 14530 13630. WAVES 2 TO 4 FEET BUILDING TO 3
TO 6 FEET TODAY. WAVES 3 TO 5 FEET TONIGHT.

SUPERIOR NORTH CENTRAL 11620 11520 13530 13630. SCATTERED SNOW
AND RAIN SHOWERS LATE IN THE EVENING. SCATTERED SNOW SHOWERS
OVERNIGHT. WAVES 2 TO 4 FEET BUILDING TO 4 TO 7 FEET TODAY. WAVES
4 TO 7 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL 11620 12510 11410 11510 11620 12630. WAVES
3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET TODAY. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET TONIGHT.

SUPERIOR EAST 11720 11610 11520 12420 11520 11620 11630.
SCATTERED SNOW AND RAIN SHOWERS. SCATTERED SNOW SHOWERS LATE
TONIGHT. WAVES 5 TO 7 FEET SUBSIDING TO 2 TO 4 FEET TODAY. WAVES
3 TO 6 FEET TONIGHT.

$$

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