Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 130900
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
400 AM EST FRI JAN 13 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...AS A 29.9 INCH LOW PRESSURE TROUGH OVER WESTERN QUEBEC
SLIDES QUICKLY TO THE EAST OF THE AREA THIS MORNING...A 30.7 INCH
HIGH PRESSURE OVER THE NORTHERN PLAINS WILL MOVE INTO THE UPPER
GREAT LAKES. THE RIDGE WILL REACH THE LOWER GREAT LAKES ON SATURDAY
AS A 30.4 INCH TROUGH OVER NORTHERN ONTARIO BRUSHES LAKE SUPERIOR. A
30.5 INCH RIDGE WILL THEN BUILD ACROSS THE UPPER MISSISSIPPI RIVER
VALLEY SATURDAY AND GREAT LAKES ON SUNDAY BEFORE WEAKENING ON MONDAY.
29.8 INCH LOW PRESSURE WILL THEN TRACK NORTHEASTWARD INTO THE UPPER
GREAT LAKES REGION ON TUESDAY.

LSZ162-131700-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
400 AM EST FRI JAN 13 2017 /300 AM CST FRI JAN 13 2017/

.EARLY THIS MORNING...NORTHWEST WINDS 10 TO 20 KNOTS. SCATTERED
SNOW SHOWERS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
.TODAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. ISOLATED SNOW SHOWERS IN THE MORNING. WAVES SUBSIDING
TO CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY AFTER MIDNIGHT.
ISOLATED SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 5 TO
8 FEET.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
2 TO 4 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING EAST 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. A CHANCE
OF RAIN...FREEZING RAIN AND SNOW. WAVES BUILDING TO 2 TO 4 FEET.

$$

LSZ263-131700-
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-
400 AM EST FRI JAN 13 2017

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 AM EST THIS
MORNING...

.EARLY THIS MORNING...NORTHWEST WINDS 10 TO 20 KNOTS. HEAVY FREEZING
SPRAY. SCATTERED SNOW SHOWERS. WAVES 3 TO 6 FEET.
.TODAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST IN THE
AFTERNOON. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. ISOLATED SNOW SHOWERS. HEAVY FREEZING
SPRAY AFTER MIDNIGHT. WAVES BUILDING TO 7 TO 10 FEET.
.SATURDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. A
SLIGHT CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES SUBSIDING TO
2 TO 4 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. WAVES
BUILDING TO 2 TO 4 FEET.

$$

LSZ264-131700-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
400 AM EST FRI JAN 13 2017

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 9 AM EST THIS
MORNING...

.EARLY THIS MORNING...NORTHWEST WINDS 15 TO 25 KNOTS. HEAVY
FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES 4 TO 7 FEET.
.TODAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST IN THE
AFTERNOON. HEAVY FREEZING SPRAY THROUGH MID MORNING. SCATTERED SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. ISOLATED SNOW SHOWERS. FREEZING SPRAY
AFTER MIDNIGHT. WAVES BUILDING TO 7 TO 10 FEET.
.SATURDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS IN THE
MORNING. FREEZING SPRAY. WAVES SUBSIDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS. WAVES 3 TO
5 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING WEST. WAVES
BUILDING TO 2 TO 4 FEET.

$$

LSZ265-131700-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
400 AM EST FRI JAN 13 2017

...GALE WARNING IN EFFECT UNTIL 6 AM EST EARLY THIS MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 11 AM EST THIS
MORNING...

.EARLY THIS MORNING...NORTHWEST WINDS 20 TO 30 KNOTS. GALE FORCE
GUSTS TO 35 KNOTS. HEAVY FREEZING SPRAY. SCATTERED SNOW SHOWERS.
WAVES 3 TO 6 FEET.
.TODAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST IN THE
AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING. ISOLATED SNOW
SHOWERS IN THE MORNING. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET.
.SATURDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO 2 TO
4 FEET.
.SATURDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE OF
FREEZING RAIN. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW. WAVES
CALM TO 2 FEET.

$$

LSZ266-131700-
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-
400 AM EST FRI JAN 13 2017

...GALE WARNING IN EFFECT UNTIL 6 AM EST EARLY THIS MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 11 AM EST THIS
MORNING...

.EARLY THIS MORNING...NORTHWEST WINDS 20 TO 30 KNOTS. GALE FORCE
GUSTS TO 35 KNOTS. HEAVY FREEZING SPRAY. NUMEROUS SNOW SHOWERS.
WAVES 6 TO 10 FEET.
.TODAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS IN THE AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING.
SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. ISOLATED SNOW SHOWERS. HEAVY FREEZING
SPRAY AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET...THEN
BUILDING TO 6 TO 9 FEET.
.SATURDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 7 TO 10 FEET...THEN SUBSIDING TO 3 TO
6 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 5 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE OF
FREEZING RAIN. A CHANCE OF RAIN. WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ267-131700-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
400 AM EST FRI JAN 13 2017

...GALE WARNING IN EFFECT UNTIL 6 AM EST EARLY THIS MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 11 AM EST THIS
MORNING...

.EARLY THIS MORNING...NORTHWEST WINDS 20 TO 30 KNOTS. GALE FORCE
GUSTS TO 35 KNOTS. HEAVY FREEZING SPRAY. SNOW SHOWERS. WAVES 8 TO 11
FEET SUBSIDING TO 7 TO 10 FEET.
.TODAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING.
NUMEROUS SNOW SHOWERS IN THE MORNING...THEN SCATTERED SNOW
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. ISOLATED SNOW SHOWERS. HEAVY FREEZING
SPRAY AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET...THEN
BUILDING TO 4 TO 7 FEET.
.SATURDAY...WEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY IN THE
MORNING. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 6 TO
9 FEET...THEN SUBSIDING TO 4 TO 7 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
2 TO 4 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE OF
FREEZING RAIN AND SLEET. A CHANCE OF RAIN...POSSIBLY MIXED WITH
SNOW. WAVES CALM TO 2 FEET.

$$

LSZ261-131700-
MAFOR 1310/
SUPERIOR WEST...HEAVY FREEZING SPRAY WARNING IN EFFECT...11720
11710 11610 11510 11520 12530 11542. WAVES 1 TO 4 FEET TODAY BUILDING
TO 4 TO 7 FEET TONIGHT.

SUPERIOR NORTH CENTRAL...HEAVY FREEZING SPRAY WARNING IN EFFECT...
11732 11720 11710 11600 11610 12530 11540. HEAVY FREEZING SPRAY
THIS MORNING. SCATTERED SNOW SHOWERS THIS MORNING AND LATE TONIGHT.
FREEZING SPRAY LATE TONIGHT. WAVES 4 TO 7 FEET SUBSIDING TO 1 TO 3
FEET TODAY. WAVES BUILDING TO 6 TO 9 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL...GALE WARNING AND HEAVY FREEZING SPRAY
WARNING IN EFFECT...11752 11722 11710 11610 12510 11520 11530.
SCATTERED SNOW SHOWERS THIS MORNING. WAVES 5 TO 8 FEET SUBSIDING TO 1
TO 4 FEET TODAY AND TONIGHT.

SUPERIOR EAST...GALE WARNING AND HEAVY FREEZING SPRAY WARNING IN
EFFECT...11757 11727 11712 11710 11610 11520 11530 11532. HEAVY
FREEZING SPRAY THIS MORNING. SCATTERED SNOW SHOWERS FROM LATE MORNING
THROUGH THIS AFTERNOON. WAVES 7 TO 11 FEET SUBSIDING TO 2 TO 6 FEET
TODAY AND TONIGHT.

$$

KEC


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