Great Lakes Forecast
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000
FZUS63 KMQT 220909
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
409 AM EST THU JAN 22 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A WEAK 30.2 INCH TROUGH OF LOW PRESSURE NEAR SAULT STE
MARIE WILL SLOWLY ERODE AS 30.5 INCH HIGH PRESSURE OVER THE NORTHERN
PLAINS SINKS TO THE OHIO VALLEY THROUGH THIS AFTERNOON. 29.4 INCH LOW
PRESSURE ACROSS NORTHERN MANITOBA LATE THIS AFTERNOON WILL SWING
ACROSS NORTHERN ONTARIO AND INTO QUEBEC FRIDAY AND FRIDAY
NIGHT...WHILE DRAGGING A TROUGH AVERAGING 29.7 INCHES ACROSS LAKE
SUPERIOR. LOOK FOR A 30.1 INCH HIGH PRESSURE SYSTEM OVER NORTH
CENTRAL CANADA FRIDAY NIGHT TO PUSH ACROSS ONTARIO AT 30.0 INCHES
SATURDAY NIGHT AND SUNDAY...BEFORE EXITING INTO QUEBEC SUNDAY NIGHT.
AT THE SAME TIME A 29.4 INCH LOW PRESSURE SYSTEM ACROSS NORTHERN
SASKATCHEWAN SATURDAY WILL SINK SOUTHEAST ACROSS MINNESOTA AND
WISCONSIN SUNDAY MORNING AT 29.5 INCHES...AND THE OHIO VALLEY BY LATE
SUNDAY AFTERNOON. THIS WILL BE FOLLOWED BY A 30.3 INCH HIGH PRESSURE
SYSTEM SETTLING INTO ONTARIO AND LAKE SUPERIOR MONDAY.

LSZ162-221715-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
409 AM EST THU JAN 22 2015

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH FRIDAY
MORNING...

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 5 TO 8 FEET.
.TONIGHT...SOUTHWEST GALES TO 35 KNOTS. FREEZING SPRAY IN THE
EVENING. A SLIGHT CHANCE OF SNOW...POSSIBLY MIXED WITH RAIN...
FREEZING RAIN AND SLEET AFTER MIDNIGHT. WAVES BUILDING TO 7 TO
11 FEET.
.FRIDAY...SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 10 TO
20 KNOTS IN THE AFTERNOON. GALE FORCE GUSTS TO 35 KNOTS IN THE
MORNING. A SLIGHT CHANCE OF FREEZING RAIN AND SNOW IN THE MORNING.
WAVES SUBSIDING TO 2 TO 4 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SNOW SHOWERS IN THE EVENING. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING TO 1 TO
3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. A CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS.
WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ263-221715-
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-
409 AM EST THU JAN 22 2015

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH FRIDAY
MORNING...

.EARLY THIS MORNING...NORTHWEST WINDS 5 TO 15 KNOTS. ISOLATED
SNOW SHOWERS. WAVES CALM TO 2 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE AFTERNOON. WAVES
BUILDING TO 5 TO 8 FEET.
.TONIGHT...SOUTHWEST GALES TO 40 KNOTS. FREEZING SPRAY IN THE
EVENING. A CHANCE OF SNOW. A SLIGHT CHANCE OF FREEZING RAIN AND
SLEET AFTER MIDNIGHT. WAVES BUILDING TO 10 TO 14 FEET...THEN
SUBSIDING TO 9 TO 12 FEET.
.FRIDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS
IN THE AFTERNOON. GALE FORCE GUSTS TO 35 KNOTS IN THE MORNING. A
CHANCE OF FREEZING RAIN AND SNOW...POSSIBLY MIXED WITH SLEET IN THE
MORNING. WAVES SUBSIDING TO 3 TO 6 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.SATURDAY...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES 1 TO
3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. A CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 2 TO 4 FEET.

$$

LSZ264-221715-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
409 AM EST THU JAN 22 2015

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH FRIDAY
MORNING...

.EARLY THIS MORNING...NORTHWEST WINDS 5 TO 15 KNOTS. ISOLATED
SNOW SHOWERS. WAVES 1 TO 3 FEET SUBSIDING TO CALM TO 2 FEET.
.TODAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 20 TO
30 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS IN THE MORNING.
WAVES BUILDING TO 5 TO 8 FEET.
.TONIGHT...SOUTHWEST GALES TO 40 KNOTS. FREEZING SPRAY IN THE
EVENING. A SLIGHT CHANCE OF SNOW IN THE EVENING...THEN SNOW
LIKELY AFTER MIDNIGHT. WAVES BUILDING TO 10 TO 14 FEET.
.FRIDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS
IN THE AFTERNOON. GALE FORCE GUSTS TO 35 KNOTS IN THE MORNING. A
CHANCE OF SNOW...POSSIBLY MIXED WITH SLEET IN THE MORNING. WAVES
SUBSIDING TO 3 TO 6 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH IN THE
AFTERNOON. WAVES 1 TO 3 FEET.
.SATURDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS VEERING EAST
AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. A CHANCE
OF SNOW SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ265-221715-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
409 AM EST THU JAN 22 2015

.EARLY THIS MORNING...NORTHWEST WINDS 10 TO 20 KNOTS. ISOLATED
SNOW SHOWERS. WAVES CALM TO 2 FEET.
.TODAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. FLURRIES IN THE MORNING. WAVES BUILDING TO 1 TO
3 FEET.
.TONIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO
35 KNOTS OVERNIGHT. A CHANCE OF SNOW AFTER MIDNIGHT. WAVES BUILDING
TO 3 TO 5 FEET.
.FRIDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO 20 KNOTS IN
THE AFTERNOON. A CHANCE OF SNOW...POSSIBLY MIXED WITH SLEET AND
FREEZING RAIN IN THE MORNING. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS VEERING EAST
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. A CHANCE
OF SNOW SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ266-221715-
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-
409 AM EST THU JAN 22 2015

.EARLY THIS MORNING...NORTHWEST WINDS 15 TO 25 KNOTS. ISOLATED
SNOW SHOWERS. WAVES 1 TO 3 FEET.
.TODAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS IN THE MORNING.
WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 4 TO 7 FEET.
.TONIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS...WITH A FEW GALE FORCE
GUSTS TO 35 KNOTS. A CHANCE OF SNOW AFTER MIDNIGHT. WAVES BUILDING
TO 10 TO 14 FEET.
.FRIDAY...SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW...POSSIBLY MIXED WITH
SLEET. WAVES SUBSIDING TO 4 TO 7 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES 2 TO 4 FEET.
.SATURDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS BECOMING EAST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO
3 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 2 TO 4 FEET.

$$

LSZ267-221715-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
409 AM EST THU JAN 22 2015

.EARLY THIS MORNING...NORTHWEST WINDS 10 TO 20 KNOTS. ISOLATED
SNOW SHOWERS. WAVES 1 TO 3 FEET.
.TODAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. ISOLATED SNOW SHOWERS IN THE MORNING. WAVES SUBSIDING
TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO
35 KNOTS AFTER MIDNIGHT. FREEZING SPRAY AFTER MIDNIGHT. A CHANCE OF
SNOW AFTER MIDNIGHT. WAVES BUILDING TO 6 TO 9 FEET.
.FRIDAY...SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW. WAVES SUBSIDING TO
3 TO 6 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO
1 TO 3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS BECOMING EAST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...EAST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.

$$

LSZ261-221715-
MAFOR 2210/
SUPERIOR WEST...GALE WARNING IN EFFECT...11600 11520 11530 11541
14551. CHANCE OF SNOW...SLIGHT CHANCE OF LIGHT FREEZING RAIN AND
LIGHT SLEET LATE TONIGHT. WAVES 2 FEET OR LESS BUILDING TO 4 TO 7
FEET TODAY. WAVES 5 TO 8 FEET BUILDING TO 7 TO 10 FEET TONIGHT.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11720 11600
11530 11540 13550 11557. WAVES 1 TO 2 FEET BUILDING TO 4 TO 7 FEET
TODAY. WAVES 7 TO 10 FEET BUILDING TO 9 TO 13 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL 11720 11710 11620 11520 11530 13540 19550.
WAVES 1 TO 3 FEET TODAY. WAVES 2 TO 5 FEET TONIGHT.

SUPERIOR EAST 12720 11610 11520 12540 12540 19550. CHANCE OF SNOW
LATE TONIGHT. WAVES 2 TO 3 FEET TODAY BUILDING TO 7 TO 10 FEET
TONIGHT.

$$

SRF



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