Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 240919
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
419 AM EST WED DEC 24 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A LOW PRESSURE TROUGH AVERAGING 29.7 INCHES OVER EASTERN
LAKE SUPERIOR WILL FADE TODAY AS A 29.4 INCH LOW PRESSURE IN THE
OHIO RIVER VALLEY THIS MORNING MOVES ACROSS LAKE HURON THIS EVENING
AND THEN TO NEAR JAMES BAY ON THURSDAY MORNING WHILE DEEPENING TO
28.8 INCHES. IN ITS WAKE...EXPECT A HIGH PRESSURE RIDGE AXIS
AVERAGING 29.9 INCHES TO CROSS THE GREAT LAKES ON THURSDAY. A 29.8
INCH LOW PRESSURE TROUGH WILL THEN FOLLOW OVER THE UPPER GREAT
LAKES ON FRIDAY TO THE SOUTHEAST OF A 30.4 INCH HIGH PRESSURE SYSTEM
THAT WILL BUILD INTO WEST CENTRAL CANADA ON SATURDAY AND SUNDAY.

LSZ162-241730-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
419 AM EST WED DEC 24 2014 /319 AM CST WED DEC 24 2014/

.EARLY THIS MORNING...NORTHEAST WINDS 10 TO 20 KNOTS. ISOLATED
SNOW SHOWERS. WAVES 2 TO 4 FEET.
.TODAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS. WAVES SUBSIDING
TO 1 TO 3 FEET.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. ISOLATED SNOW SHOWERS IN THE EVENING.
WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
MORNING. WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES SUBSIDING TO CALM
TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
1 TO 3 FEET.

$$

LSZ263-241730-
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-
419 AM EST WED DEC 24 2014

.EARLY THIS MORNING...NORTHEAST WINDS 10 TO 20 KNOTS. ISOLATED
SNOW SHOWERS. WAVES 2 TO 4 FEET.
.TODAY...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH IN THE
AFTERNOON. ISOLATED SNOW SHOWERS. WAVES 2 TO 4 FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST AFTER
MIDNIGHT. ISOLATED SNOW SHOWERS. WAVES BUILDING TO 3 TO 5 FEET...
THEN SUBSIDING TO 2 TO 4 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS IN THE MORNING. WAVES SUBSIDING TO 1 TO 3 FEET...THEN
BUILDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO
2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ264-241730-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
419 AM EST WED DEC 24 2014

.EARLY THIS MORNING...NORTHEAST WINDS 10 TO 20 KNOTS. ISOLATED
SNOW SHOWERS. WAVES 2 TO 4 FEET.
.TODAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS. WAVES 2 TO
4 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST AFTER
MIDNIGHT. ISOLATED SNOW SHOWERS. WAVES BUILDING TO 3 TO 5 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO
4 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING
TO 2 TO 4 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 6 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ265-241730-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
419 AM EST WED DEC 24 2014

.EARLY THIS MORNING...NORTH WINDS 10 TO 20 KNOTS. PATCHY DRIZZLE AND
SNOW SHOWERS. WAVES 1 TO 3 FEET.
.TODAY...NORTH WINDS 10 TO 20 KNOTS. PATCHY DRIZZLE AND SNOW
SHOWERS. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3
FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES BUILDING
TO 4 TO 7 FEET.
.THURSDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
MORNING. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH IN THE
AFTERNOON. A CHANCE OF SNOW. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.
WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST. A CHANCE
OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET...THEN SUBSIDING
TO 2 TO 4 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ266-241730-
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-
419 AM EST WED DEC 24 2014

.EARLY THIS MORNING...NORTH WINDS 5 TO 15 KNOTS. WAVES 2 TO
4 FEET.
.TODAY...NORTH WINDS 5 TO 15 KNOTS. PATCHY DRIZZLE AND SNOW
SHOWERS. WAVES 2 TO 4 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS AFTER MIDNIGHT. ISOLATED SNOW SHOWERS. WAVES BUILDING TO
5 TO 8 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES
SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST IN THE
AFTERNOON. A CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO
4 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO
6 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ267-241730-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
419 AM EST WED DEC 24 2014

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

$$

LSZ261-241730-
MAFOR 2410/
SUPERIOR WEST 13120 12810 12710 11620. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 14120 13830 11730. ISOLATED SNOW SHOWERS.
WAVES 2 TO 5 FEET.

SUPERIOR SOUTH CENTRAL 13810 11820 11830 11840 12740. ISOLATED SNOW
SHOWERS WITH PATCHY DRIZZLE TODAY. SCATTERED SNOW SHOWERS TONIGHT.
WAVES 2 TO 4 FEET TODAY BUILDING TO 5 TO 7 FEET TONIGHT.

SUPERIOR EAST 14110 11820 12830 11740. PATCHY DRIZZLE IN THE MORNING.
SLIGHT CHANCE OF RAIN AND SNOW THIS AFTERNOON. SCATTERED SNOW SHOWERS
TONIGHT. WAVES 1 TO 3 FEET TODAY BUILDING TO 4 TO 6 FEET TONIGHT.

$$

JLA






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