Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 261508
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1008 AM EST FRI DEC 26 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.9 INCH SURFACE TROUGH OVER EASTERN LAKE SUPERIOR
TODAY WILL SLIDE SLOWLY EASTWARD AND STALL NEAR THE MACKINAC STRAITS
TONIGHT. A 29.9 INCH LOW DEVELOPING IN THE CENTRAL PLAINS TONIGHT
WILL MOVE NORTHEAST ALONG THIS TROUGH ON SATURDAY WHILE STRENGTHENING
TO 29.8 INCHES. THE LOW WILL STRENGTHEN FURTHER TO 29.7 INCHES ON
SATURDAY NIGHT AS IT MOVES INTO QUEBEC...ALLOWING A 30.1 INCH RIDGE
TO MOVE OVER THE UPPER GREAT LAKES REGION. A WEAK TROUGH OF 30.0
INCHES WILL QUICKLY MOVE ACROSS LAKE SUPERIOR ON SUNDAY AHEAD OF A
STRONG HIGH OF 31.2 INCHES BUILDING OVER ALBERTA. THIS HIGH WILL
DRIFT SOUTHEAST INTO THE NORTHERN AND CENTRAL PLAINS BY TUESDAY AND
STRETCH A 30.5 INCH RIDGE OVER THE UPPER GREAT LAKES.

LSZ162-262315-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1008 AM EST FRI DEC 26 2014 /908 AM CST FRI DEC 26 2014/

.REST OF TODAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW THROUGH MID AFTERNOON.
WAVES CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS. HEAVY FREEZING SPRAY. WAVES BUILDING TO 4 TO 7 FEET.

$$

LSZ263-262315-
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-
1008 AM EST FRI DEC 26 2014

.REST OF TODAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW. WAVES CALM TO
2 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. WAVES
BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW. WAVES BUILDING TO
2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
5 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 2 TO 4 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS. HEAVY FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 7 TO 10 FEET.

$$

LSZ264-262315-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1008 AM EST FRI DEC 26 2014

.REST OF TODAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW. WAVES CALM TO
2 FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO
3 TO 5 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
2 TO 4 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. FREEZING SPRAY. WAVES BUILDING TO 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST GALES TO
35 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 7 TO 10 FEET.

$$

LSZ265-262315-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1008 AM EST FRI DEC 26 2014

.REST OF TODAY...NORTH WINDS LESS THAN 10 KNOTS INCREASING TO
5 TO 15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW. WAVES
CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. SNOW LIKELY IN THE MORNING...THEN A CHANCE OF SNOW IN
THE AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST GALES TO
35 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 4 TO 7 FEET.

$$

LSZ266-262315-
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-
1008 AM EST FRI DEC 26 2014

.REST OF TODAY...NORTH WINDS LESS THAN 10 KNOTS INCREASING TO
5 TO 15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW. WAVES
CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS. SNOW LIKELY IN THE
MORNING...THEN A CHANCE OF SNOW IN THE AFTERNOON. WAVES BUILDING
TO 2 TO 4 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 3 TO 6 FEET.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KNOTS. SNOW SHOWERS LIKELY IN
THE MORNING...THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON.
FREEZING SPRAY IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES BUILDING TO
4 TO 7 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST GALES TO
35 KNOTS. FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES BUILDING TO
8 TO 11 FEET.

$$

LSZ267-262315-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1008 AM EST FRI DEC 26 2014

.REST OF TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST
LESS THAN 10 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW.
WAVES CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW. WAVES
CALM TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH IN THE
AFTERNOON. SNOW LIKELY. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KNOTS. SNOW SHOWERS LIKELY.
WAVES SUBSIDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS...THEN SNOW SHOWERS LIKELY. FREEZING SPRAY. WAVES
BUILDING TO 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST GALES TO
35 KNOTS. FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES BUILDING TO
4 TO 8 FEET.

$$

LSZ261-262315-
MAFOR 2616/
SUPERIOR WEST 14810 14820. SLIGHT CHANCE OF SNOW. WAVES 1 TO 3 FEET.

SUPERIOR NORTH CENTRAL 13810 14820 11820. SLIGHT CHANCE OF SNOW
OVERNIGHT. CHANCE OF SNOW SATURDAY MORNING. WAVES 1 TO 4 FEET.

SUPERIOR SOUTH CENTRAL 11700 14810 11810 12827. SLIGHT CHANCE OF
SNOW THIS AFTERNOON. CHANCE OF SNOW TONIGHT. WAVES 1 TO 4 FEET.

SUPERIOR EAST 11600 11700 11800 11810 11800 11810 12117. SLIGHT
CHANCE OF SNOW THIS AFTERNOON. CHANCE OF SNOW OVERNIGHT. WAVES
1 TO 2 FEET.

$$

JS




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