Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 111502
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1002 AM EST SUN DEC 11 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...AS A 30.4 INCH HIGH PRESSURE RIDGE OVER QUEBEC AND
WESTERN ONTARIO MOVES EASTWARD TODAY...A 29.7 INCH LOW PRESSURE
DEVELOPING IN THE CENTRAL PLAINS WILL MOVE OVER WISCONSIN. EXPECT
THIS LOW PRESSURE TO MOVE INTO QUEBEC ON MONDAY...ALLOWING A WEAK
29.9 INCH HIGH PRESSURE RIDGE TO CROSS THE WESTERN GREAT LAKES. A
29.7 INCH LOW PRESSURE TRACKING ACROSS NORTHERN ONTARIO ON MONDAY
NIGHT WILL DRAG A COLD FRONT ACROSS LAKE SUPERIOR ON MONDAY NIGHT
AHEAD OF A 30.4 INCH ARCTIC HIGH PRESSURE RIDGE STRETCHING FROM
WESTERN CANADA INTO THE NORTHERN PLAINS ON TUESDAY. ALTHOUGH THE
WESTERN PORTION OF THE RIDGE WILL REMAIN ANCHORED OVER WESTERN CANADA
THROUGH THURSDAY...THE EASTERN PORTION WILL BUILD SLOWLY TOWARD THE
OHIO RIVER VALLEY WHILE A LOW PRESSURE TROUGH AVERAGING 29.9 INCHES
LINGERS OVER LAKE SUPERIOR.

LSZ162-112315-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1002 AM EST SUN DEC 11 2016 /902 AM CST SUN DEC 11 2016/

.REST OF TODAY...EAST WINDS 10 TO 20 KNOTS. SNOW LIKELY. WAVES
1 TO 3 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
1 TO 3 FEET...THEN BUILDING TO 3 TO 5 FEET.
.MONDAY NIGHT...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING
TO 3 TO 6 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 5 TO 8 FEET.
.TUESDAY NIGHT...WEST GALES TO 35 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET.
.WEDNESDAY...WEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 3 TO
6 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.

$$

LSZ263-112315-
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-
1002 AM EST SUN DEC 11 2016

.REST OF TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST
15 TO 25 KNOTS IN THE AFTERNOON. SNOW. WAVES 1 TO 3 FEET BUILDING TO
3 TO 5 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS BACKING NORTH AFTER
MIDNIGHT. SNOW LIKELY IN THE EVENING...THEN A CHANCE OF SNOW
AFTER MIDNIGHT. WAVES 3 TO 6 FEET.
.MONDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET...THEN BUILDING TO 3 TO 6 FEET.
.MONDAY NIGHT...WEST WINDS 20 TO 30 KNOTS. SNOW SHOWERS LIKELY.
WAVES BUILDING TO 5 TO 8 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 7 TO 10 FEET.
.TUESDAY NIGHT...WEST GALES TO 40 KNOTS. SNOW SHOWERS LIKELY.
WAVES SUBSIDING TO 5 TO 8 FEET.
.WEDNESDAY...WEST GALES TO 35 KNOTS VEERING NORTHWEST. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET.
.THURSDAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.

$$

LSZ264-112315-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1002 AM EST SUN DEC 11 2016

.REST OF TODAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. SNOW LIKELY. WAVES 2 TO 4 FEET
BUILDING TO 3 TO 5 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS. SNOW LIKELY. WAVES BUILDING
TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO 25 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
1 TO 3 FEET...THEN BUILDING TO 3 TO 5 FEET.
.MONDAY NIGHT...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY. WAVES BUILDING TO
4 TO 7 FEET.
.TUESDAY...WEST GALES TO 35 KNOTS. SNOW SHOWERS LIKELY. WAVES
BUILDING TO 6 TO 9 FEET.
.TUESDAY NIGHT...WEST GALES TO 40 KNOTS. SNOW SHOWERS LIKELY.
WAVES BUILDING TO 6 TO 10 FEET.
.WEDNESDAY...WEST GALES TO 35 KNOTS VEERING NORTHWEST. SNOW
SHOWERS LIKELY...THEN A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING
TO 5 TO 8 FEET...THEN BUILDING TO 6 TO 9 FEET.
.THURSDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.

$$

LSZ265-112315-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1002 AM EST SUN DEC 11 2016

.REST OF TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST
10 TO 20 KNOTS IN THE AFTERNOON. SNOW. WAVES CALM TO 2 FEET
BUILDING TO 2 TO 4 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SNOW. WAVES BUILDING TO 3 TO 5 FEET...
THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO 25 KNOTS
IN THE AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING...THEN A
CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO
3 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
GALES TO 35 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY. WAVES
BUILDING TO 3 TO 6 FEET.
.TUESDAY...WEST GALES TO 40 KNOTS. SNOW SHOWERS. WAVES BUILDING
TO 4 TO 7 FEET.
.TUESDAY NIGHT...WEST GALES TO 40 KNOTS. SNOW SHOWERS LIKELY.
WAVES 4 TO 7 FEET.
.WEDNESDAY...WEST GALES TO 40 KNOTS VEERING NORTHWEST. SNOW
SHOWERS LIKELY. WAVES BUILDING TO 4 TO 8 FEET.
.THURSDAY...NORTHWEST GALES TO 35 KNOTS BECOMING WEST 15 TO
25 KNOTS. SNOW SHOWERS LIKELY. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ266-112315-
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-
1002 AM EST SUN DEC 11 2016

.REST OF TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
15 TO 25 KNOTS IN THE AFTERNOON. SNOW. WAVES 1 TO 3 FEET BUILDING TO
2 TO 4 FEET.
.TONIGHT...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SNOW LIKELY. WAVES BUILDING TO 3 TO
6 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING WEST 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...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
GALES TO 35 KNOTS AFTER MIDNIGHT. SNOW SHOWERS. WAVES BUILDING TO
5 TO 8 FEET.
.TUESDAY...WEST GALES TO 35 KNOTS. SNOW SHOWERS. WAVES BUILDING
TO 7 TO 10 FEET.
.TUESDAY NIGHT...WEST GALES TO 40 KNOTS. SNOW SHOWERS. WAVES
BUILDING TO 8 TO 11 FEET.
.WEDNESDAY...WEST GALES TO 35 KNOTS BECOMING NORTHWEST GALES TO
40 KNOTS. SNOW SHOWERS LIKELY. WAVES BUILDING TO 10 TO 14 FEET...
THEN SUBSIDING TO 8 TO 11 FEET.
.THURSDAY...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS. SNOW SHOWERS LIKELY. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ267-112315-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1002 AM EST SUN DEC 11 2016

.REST OF TODAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
15 TO 25 KNOTS IN THE AFTERNOON. SNOW. WAVES CALM TO 2 FEET
BUILDING TO 2 TO 4 FEET.
.TONIGHT...EAST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SNOW IN THE EVENING...THEN A CHANCE OF
SNOW AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BACKING WEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
20 TO 30 KNOTS AFTER MIDNIGHT. SNOW SHOWERS. WAVES BUILDING TO
5 TO 8 FEET.
.TUESDAY...WEST GALES TO 35 KNOTS. SNOW SHOWERS. WAVES BUILDING
TO 8 TO 11 FEET.
.TUESDAY NIGHT...WEST GALES TO 35 KNOTS. SNOW SHOWERS. WAVES 8 TO
11 FEET.
.WEDNESDAY...WEST GALES TO 35 KNOTS VEERING NORTHWEST. SNOW
SHOWERS. WAVES BUILDING TO 10 TO 14 FEET...THEN SUBSIDING TO 8 TO
11 FEET.
.THURSDAY...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS. SNOW SHOWERS LIKELY. WAVES SUBSIDING TO 1 TO 3 FEET.

$$
LSZ261-112315-
MAFOR 1116/
SUPERIOR WEST 13227 11127 12830 11720 11710. CHANCE OF SNOW
OVERNIGHT AND MONDAY MORNING. WAVES 2 TO 5 FEET.

SUPERIOR NORTH CENTRAL 14237 11237 11230 11120 11810. CHANCE OF
SNOW LATE TONIGHT AND MONDAY MORNING. WAVES 1 TO 4 FEET BUILDING TO
3 TO 7 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL 11317 11227 13237 11227 11117 11817.
WAVES 1 TO 5 FEET.

SUPERIOR EAST 11327 13337 11237 11230 11120 11110. CHANCE OF SNOW
OVERNIGHT AND MONDAY MORNING. WAVES 1 TO 6 FEET.

$$

PETRO



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