Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 211501
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1001 AM EST SUN DEC 21 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A HIGH PRESSURE RIDGE OF 30.4 INCHES FROM QUEBEC TO THE
MID MISSISSIPPI VALLEY WILL SLIDE TO THE LOWER GREAT LAKES AND NEW
ENGLAND THROUGH MONDAY. LOW PRESSURE OF 29.3 INCHES OVER THE NORTHERN
PLAINS WILL MOVE TO THE UPPER MISSISSIPPI RIVER VALLEY LATE MONDAY
BEFORE STALLING OUT OVER THE UPPER GREAT LAKES ON TUESDAY. ANOTHER
LOW PRESSURE SYSTEM OF 29.6 INCHES FORMING OVER TEXAS ON MONDAY WILL
TRACK TO LOWER MICHIGAN TUESDAY NIGHT INTO WEDNESDAY MORNING THEN
QUICKLY DEEPEN TO 29.1 INCHES AS IT REACHES LAKE HURON ON WEDNESDAY
EVENING. EXPECT THE LOW TO CONTINUE DEEPENING TO 28.7 INCHES AS IT
LIFTS TO JAMES BAY BY THURSDAY NIGHT.

LSZ162-212315-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1001 AM EST SUN DEC 21 2014 /901 AM CST SUN DEC 21 2014/

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.
WAVES 2 TO 4 FEET.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.
WAVES 2 TO 4 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. SNOW LIKELY...POSSIBLY
MIXED WITH RAIN. WAVES 2 TO 4 FEET.
.MONDAY NIGHT...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN IN THE EVENING.
SNOW LIKELY. WAVES BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO
2 TO 4 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS IN THE AFTERNOON. SNOW LIKELY. WAVES SUBSIDING TO 1 TO
3 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH
AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES 1 TO 3 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
3 TO 5 FEET.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ263-212315-
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-
1001 AM EST SUN DEC 21 2014

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.
WAVES 2 TO 4 FEET.
.TONIGHT...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING TO 3 TO
6 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW...
POSSIBLY MIXED WITH RAIN. WAVES SUBSIDING TO 3 TO 5 FEET...THEN
BUILDING TO 4 TO 7 FEET.
.MONDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. SNOW LIKELY IN
THE EVENING. A SLIGHT CHANCE OF RAIN. A CHANCE OF SNOW AFTER
MIDNIGHT. WAVES 4 TO 7 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW IN THE
MORNING. SNOW LIKELY IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO
5 FEET.
.TUESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BACKING NORTH AFTER
MIDNIGHT. A CHANCE OF SNOW. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 4 TO 7 FEET.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 3 TO
5 FEET.

$$

LSZ264-212315-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1001 AM EST SUN DEC 21 2014

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS. FLURRIES LATE IN THE
MORNING. A CHANCE OF SNOW IN THE AFTERNOON. WAVES 2 TO 4 FEET
BUILDING TO 3 TO 6 FEET.
.TONIGHT...SOUTH WINDS 15 TO 25 KNOTS. SNOW LIKELY IN THE
EVENING...THEN A CHANCE OF SNOW AFTER MIDNIGHT. WAVES BUILDING TO
4 TO 7 FEET.
.MONDAY...SOUTH WINDS 15 TO 25 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. A CHANCE OF SNOW. A SLIGHT CHANCE OF RAIN IN THE
AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET.
.MONDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE
OF RAIN IN THE EVENING. A CHANCE OF SNOW. WAVES SUBSIDING TO 4 TO
7 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST IN THE
AFTERNOON. A CHANCE OF SNOW IN THE MORNING. SNOW LIKELY IN THE
AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.TUESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.
WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS. A CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 5 TO 8 FEET.
.THURSDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 6 TO
9 FEET...THEN SUBSIDING TO 3 TO 5 FEET.

$$

LSZ265-212315-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1001 AM EST SUN DEC 21 2014

.REST OF TODAY...SOUTH WINDS 15 TO 25 KNOTS. FLURRIES LATE IN THE
MORNING. A CHANCE OF SNOW IN THE AFTERNOON. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET.
.TONIGHT...SOUTH WINDS 15 TO 25 KNOTS. SNOW LIKELY IN THE
EVENING...THEN A CHANCE OF SNOW AFTER MIDNIGHT. WAVES BUILDING TO
3 TO 6 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.MONDAY...SOUTH WINDS 15 TO 25 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. A CHANCE OF SNOW. A SLIGHT CHANCE OF RAIN IN THE
AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET.
.MONDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW IN THE EVENING. A
SLIGHT CHANCE OF RAIN. SNOW LIKELY AFTER MIDNIGHT. WAVES
SUBSIDING TO 3 TO 6 FEET...THEN BUILDING TO 4 TO 7 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. SNOW LIKELY. RAIN
LIKELY IN THE AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING NORTH
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW. WAVES
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 5 TO 8 FEET.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 6 TO
9 FEET...THEN SUBSIDING TO 2 TO 4 FEET.

$$

LSZ266-212315-
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-
1001 AM EST SUN DEC 21 2014

.REST OF TODAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW IN
THE AFTERNOON. WAVES 2 TO 4 FEET BUILDING TO 3 TO 6 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS. SNOW LIKELY. WAVES
BUILDING TO 5 TO 8 FEET.
.MONDAY...SOUTH WINDS 20 TO 30 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. A CHANCE OF SNOW. WAVES BUILDING TO 6 TO 9 FEET.
.MONDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. A SLIGHT CHANCE
OF RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO 7 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. SNOW LIKELY IN THE
MORNING...THEN RAIN LIKELY IN THE AFTERNOON. WAVES SUBSIDING TO
2 TO 4 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST
AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW. WAVES SUBSIDING TO
1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS. A CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 6 TO 9 FEET.
.THURSDAY...WEST GALES TO 35 KNOTS DIMINISHING TO 15 TO 25 KNOTS.
A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 9 TO 12 FEET...THEN
SUBSIDING TO 3 TO 6 FEET.

$$

LSZ267-212315-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1001 AM EST SUN DEC 21 2014

.REST OF TODAY...SOUTH WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
SNOW IN THE AFTERNOON. WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.MONDAY...SOUTHEAST WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF
SNOW. WAVES BUILDING TO 4 TO 7 FEET.
.MONDAY NIGHT...SOUTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. A SLIGHT CHANCE
OF RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 6 FEET.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. SNOW LIKELY IN THE MORNING...THEN RAIN
LIKELY IN THE AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF
RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS. SNOW LIKELY. WAVES BUILDING TO 6 TO 9 FEET.
.THURSDAY...WEST GALES TO 35 KNOTS DIMINISHING TO 15 TO 25 KNOTS.
A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 9 TO 12 FEET...THEN
SUBSIDING TO 4 TO 7 FEET.

$$
LSZ261-212315-
MAFOR 2116/
SUPERIOR WEST 12420 15320. CHANCE OF SNOW. SLIGHT CHANCE OF RAIN
MONDAY MORNING. WAVES 2 TO 4 FEET.

SUPERIOR NORTH CENTRAL 12430 13437 13430. CHANCE OF SNOW THIS
AFTERNOON. CHANCE OF SNOW OVERNIGHT AND MONDAY MORNING. WAVES 2 TO 4
FEET BUILDING TO 4 TO 6 FEET AND 5 TO 7 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL 12430 11437 13447 12430. CHANCE OF SNOW THIS
AFTERNOON AND MONDAY MORNING. WAVES 2 TO 6 FEET.

SUPERIOR EAST 12430 12440 12447 11440 11340. SLIGHT CHANCE OF SNOW
THIS AFTERNOON. CHANCE OF SNOW MONDAY MORNING. WAVES 2 TO 4 FEET
BUILDING TO 4 TO 6 FEET THIS AFTERNOON AND 5 TO 8 FEET TONIGHT.

$$

PETRO





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