Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 230740
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
340 AM EDT THU OCT 23 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.5 INCH HIGH PRESSURE OVER FAR EASTERN QUEBEC WILL
MOVE TO THE CANADIAN MARITIMES TODAY WHILE EXTENDING A RIDGE AXIS
SOUTHWEST INTO THE CENTRAL GREAT LAKES. MEANWHILE...A 29.6 INCH LOW
PRESSURE CENTERED NEAR LAKE WINNIPEG WILL DRIFT INTO NORTHWEST
ONTARIO AND DISSIPATE BY FRIDAY. ANOTHER 29.3 INCH LOW PRESSURE OVER
NORTHERN SASKATCHEWAN ON FRIDAY WILL THEN DRIFT EAST INTO HUDSON BAY
ON SATURDAY...DRAGGING ITS ATTENDANT COLD FRONT ACROSS THE UPPER
GREAT LAKES ON FRIDAY NIGHT. IN THE WAKE OF THIS FRONTAL
PASSAGE...EXPECT A 30.2 INCH HIGH PRESSURE OVER THE NORTHERN PLAINS
ON SATURDAY TO MOVE TO THE OHIO RIVER VALLEY ON SUNDAY WHILE YET
ANOTHER 29.4 INCH LOW PRESSURE DEVELOPS OVER THE CANADIAN PRAIRIES.
THIS LOW WILL TRACK EASTWARD...REACHING THE UPPER MISSISSIPPI VALLEY
BY MONDAY EVENING.

LSZ162-231545-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
340 AM EDT THU OCT 23 2014 /240 AM CDT THU OCT 23 2014/

.EARLY THIS MORNING...SOUTH WINDS 5 TO 15 KNOTS. SCATTERED
SHOWERS. WAVES 2 TO 4 FEET.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS. SCATTERED SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO
5 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST. A CHANCE OF
RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ263-231545-
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-
340 AM EDT THU OCT 23 2014

.EARLY THIS MORNING...SOUTH WINDS 10 TO 20 KNOTS. SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS. WAVES 2 TO 4 FEET BUILDING TO
3 TO 5 FEET.
.TODAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. SCATTERED RAIN SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF RAIN
SHOWERS THROUGH MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET.
.SATURDAY NIGHT...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST. WAVES
SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST. A CHANCE
OF RAIN SHOWERS. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING
TO 1 TO 3 FEET.

$$

LSZ264-231545-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
340 AM EDT THU OCT 23 2014

.EARLY THIS MORNING...SOUTH WINDS 15 TO 25 KNOTS. SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS. WAVES 3 TO 6 FEET.
.TODAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. SCATTERED RAIN SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH MIDNIGHT. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. WAVES 3 TO 6 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHEAST. WAVES
SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.

$$

LSZ265-231545-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
340 AM EDT THU OCT 23 2014

.EARLY THIS MORNING...SOUTH WINDS 10 TO 20 KNOTS. ISOLATED RAIN
SHOWERS. WAVES 3 TO 6.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS. SCATTERED RAIN SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS THROUGH MIDNIGHT. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY...WEST WINDS 20 TO 30 KNOTS. WAVES BUILDING TO 3 TO 6
FEET.
.SATURDAY NIGHT...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES 3 TO 5 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTHEAST. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 2 TO
4 FEET.

$$

LSZ266-231545-
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-
340 AM EDT THU OCT 23 2014

.EARLY THIS MORNING...SOUTH WINDS 15 TO 25 KNOTS. ISOLATED RAIN
SHOWERS. WAVES 4 TO 7 FEET.
.TODAY...SOUTH WINDS 10 TO 20 KNOTS. SCATTERED RAIN SHOWERS.
WAVES SUBSIDING TO 2 TO 4 FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS THROUGH
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET.
.SATURDAY...WEST WINDS 20 TO 30 KNOTS. WAVES BUILDING TO 6 TO 9
FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. WAVES SUBSIDING
TO 5 TO 8 FEET.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.

$$

LSZ267-231545-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
340 AM EDT THU OCT 23 2014

.EARLY THIS MORNING...SOUTH WINDS 10 TO 20 KNOTS. WAVES 2 TO
4 FEET.
.TODAY...SOUTH WINDS 10 TO 20 KNOTS. ISOLATED RAIN SHOWERS BY MID
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF RAIN
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
WAVES BUILDING TO 3 TO 5 FEET.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS BY
MID AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. WAVES 6 TO 9 FEET.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN
SHOWERS...THEN RAIN SHOWERS LIKELY. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.

$$

LSZ261-231545-
MAFOR 2309/
SUPERIOR WEST 11420 14410 11500 12510. SCATTERED RAIN SHOWERS TODAY.
WAVES 1 TO 3 FEET.

SUPERIOR NORTH CENTRAL 13420 14410 11500. SCATTERED SHOWERS THROUGH
THIS EVENING. ISOLATED THUNDERSTORMS EARLY THIS MORNING. WAVES 4 TO
6 FEET SUBSIDING TO 2 TO 4 FEET TODAY. WAVES 1 TO 4 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL 13430 11420 12410 11510 11500. SCATTERED RAIN
SHOWERS TODAY AND THIS EVENING. WAVES 1 TO 5 FEET.

SUPERIOR EAST 14420 11410 11420 12410. ISOLATED RAIN SHOWERS THIS
AFTERNOON. CHANCE OF RAIN SHOWERS TONIGHT. WAVES 2 TO 5 FEET.

$$

SRF









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