Great Lakes Forecast
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FZUS63 KMQT 230956 CCA
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR...CORRECTED
NATIONAL WEATHER SERVICE MARQUETTE MI
446 AM EST TUE DEC 23 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...LOW PRESSURE OF 29.5 INCHES OVER EASTERN IOWA WILL REACH
NEAR GREEN BAY WISCONSIN THIS AFTERNOON AND THEN REACH CENTRAL UPPER
MICHIGAN BY DAYBREAK ON WEDNESDAY. EXPECT THIS LOW TO FILL TO 29.8
INCHES OVER EASTERN UPPER MICHIGAN BY WEDNESDAY AFTERNOON AS A MUCH
STRONGER LOW PRESSURE SYSTEM OF 29.1 INCHES LIFTS NORTHWARD FROM THE
OHIO VALLEY TO NEAR DETROIT. THIS LOW WILL DEEPEN TO 28.8 INCHES AS
IT REACHES JUST SOUTH OF JAMES BAY BY THURSDAY MORNING. AS THE LOW
FURTHER DEEPENS TO 28.6 INCHES OVER NORTHERN QUEBEC BY FRIDAY
MORNING...A WEAKER LOW PRESSURE SYSTEM OF 29.6 INCHES WILL MOVE FROM
THE CENTRAL PLAINS TO THE UPPER MISSISSIPPI RIVER VALLEY. THIS LOW
PRESSURE SYSTEM WILL FILL TO 29.8 INCHES AS IT SLIDES OVER THE UPPER
GREAT LAKES BY SATURDAY MORNING WHILE A HIGH PRESSURE RIDGE OF 30.5
INCHES BUILDS FROM WESTERN CANADA TO THE CENTRAL PLAINS.

LSZ162-231815-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
446 AM EST TUE DEC 23 2014 /346 AM CST TUE DEC 23 2014/

.EARLY THIS MORNING...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW. WAVES 2 TO 4 FEET.
.TODAY...NORTHEAST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO
35 KNOTS THIS AFTERNOON. A CHANCE OF SNOW IN THE MORNING. A SLIGHT
CHANCE OF RAIN. SNOW LIKELY IN THE AFTERNOON. WAVES BUILDING TO 5 TO
8 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN IN THE EVENING.
A CHANCE OF SNOW. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW. WAVES
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES SUBSIDING
TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.
.THURSDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS.
A CHANCE OF SNOW. WAVES BUILDING TO 3 TO 5 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ263-231815-
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-
446 AM EST TUE DEC 23 2014

.EARLY THIS MORNING...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW. WAVES 3 TO 5 FEET.
.TODAY...EAST WINDS 20 TO 30 KNOTS BACKING NORTHEAST IN THE
AFTERNOON. A FEW GALE FORCE GUSTS TO 35 KNOTS THIS AFTERNOON. A
CHANCE OF SNOW IN THE MORNING. A SLIGHT CHANCE OF RAIN. SNOW
LIKELY IN THE AFTERNOON. WAVES BUILDING TO 5 TO 8 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. SNOW LIKELY IN THE
EVENING...THEN A CHANCE OF SNOW AFTER MIDNIGHT. WAVES SUBSIDING
TO 3 TO 5 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH IN THE
AFTERNOON. A SLIGHT CHANCE OF SNOW. WAVES SUBSIDING TO 2 TO
4 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES BUILDING TO 3 TO
5 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS
IN THE MORNING. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 3 TO 6 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.

$$

LSZ264-231815-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
446 AM EST TUE DEC 23 2014

.EARLY THIS MORNING...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW. WAVES 4 TO 7 FEET.
.TODAY...EAST WINDS 20 TO 30 KNOTS BACKING NORTHEAST IN THE
AFTERNOON. A CHANCE OF SNOW...POSSIBLY MIXED WITH RAIN IN THE
MORNING...THEN SNOW LIKELY IN THE AFTERNOON. WAVES 4 TO 7 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SNOW LIKELY IN THE EVENING...THEN A
CHANCE OF SNOW AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW. WAVES
SUBSIDING TO 2 TO 4 FEET...THEN BUILDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW.
WAVES BUILDING TO 4 TO 7 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 3 TO 6 FEET.
.SATURDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 5 FEET.

$$

LSZ265-231815-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
446 AM EST TUE DEC 23 2014

.EARLY THIS MORNING...EAST WINDS 15 TO 25 KNOTS. SNOW LIKELY.
WAVES 3 TO 6 FEET.
.TODAY...EAST WINDS 20 TO 30 KNOTS. SNOW...POSSIBLY MIXED WITH
RAIN. WAVES BUILDING TO 4 TO 7 FEET.
.TONIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH AFTER
MIDNIGHT. SNOW LIKELY IN THE EVENING. A SLIGHT CHANCE OF RAIN. A
CHANCE OF SNOW AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW. WAVES SUBSIDING TO
1 TO 3 FEET...THEN BUILDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING TO 5 TO 8 FEET.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. A CHANCE OF SNOW...THEN SNOW LIKELY. WAVES BUILDING TO
3 TO 6 FEET.
.SATURDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO
7 FEET...THEN SUBSIDING TO 3 TO 5 FEET.

$$

LSZ266-231815-
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-
446 AM EST TUE DEC 23 2014

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

$$

LSZ267-231815-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
446 AM EST TUE DEC 23 2014

.EARLY THIS MORNING...EAST WINDS 20 TO 30 KNOTS. A CHANCE OF
SNOW. WAVES 3 TO 6 FEET.
.TODAY...EAST WINDS 20 TO 30 KNOTS. SNOW. A SLIGHT CHANCE OF RAIN
IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN...POSSIBLY MIXED WITH
SNOW. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO
3 FEET.
.WEDNESDAY...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW...POSSIBLY MIXED WITH
RAIN. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 2 TO
4 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. SNOW...POSSIBLY MIXED WITH RAIN IN
THE EVENING...THEN A CHANCE OF SNOW AFTER MIDNIGHT. WAVES
BUILDING TO 5 TO 8 FEET.
.THURSDAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS...THEN SNOW SHOWERS LIKELY. WAVES BUILDING TO 5 TO
8 FEET...THEN SUBSIDING TO 3 TO 6 FEET.

$$

LSZ261-231815-
MAFOR 2310/
SUPERIOR WEST 11230 11240 14147 11130 11120. CHANCE OF SNOW THIS
MORNING THEN SNOW LIKELY WITH SLIGHT CHANCE OF RAIN THIS AFTERNOON.
SNOW LIKELY THIS EVENING THEN CHANCE OF SNOW OVERNIGHT. WAVES 2 TO
4 FEET BUILDING TO 6 TO 9 FEET TODAY. WAVES SUBSIDING TO 4 TO 8 FEET
TONIGHT.

SUPERIOR NORTH CENTRAL 11230 12240 12147 11137 12120. CHANCE OF SNOW
AND RAIN THIS MORNING THEN SNOW LIKELY THIS AFTERNOON. SNOW LIKELY
THIS EVENING THEN CHANCE OF SNOW OVERNIGHT. WAVES 4 TO 7 FEET.

SUPERIOR SOUTH CENTRAL 14247 11237 11127 11120 11110. SNOW MIXED
WITH RAIN TODAY AND THIS EVENING. CHANCE OF SNOW OVERNIGHT. WAVES
4 TO 8 FEET TODAY. WAVES 5 TO 7 FEET SUBSIDING TO 2 TO 4 FEET
TONIGHT.

SUPERIOR EAST 11240 14247 11237 11220 11110. CHANCE OF SNOW EARLY
THIS MORNING THEN SNOW TODAY. SNOW AND RAIN LIKELY THIS EVENING THEN
CHANCE OF SNOW AND RAIN OVERNIGHT. WAVES 2 TO 7 FEET.

$$

KC




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