Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 290749
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
349 AM EDT WED JUL 29 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.3 INCH LOW PRESSURE NEAR LAKE WINNIPEG WILL LIFT
NORTHEAST INTO FAR NORTHERN ONTARIO TODAY. AS THIS OCCURS...A COLD
FRONT CURRENTLY OVER CENTRAL LAKE SUPERIOR WILL PUSH EAST ACROSS THE
REST OF THE LAKE THIS MORNING AND THROUGH LAKE HURON THIS AFTERNOON.
THE LOW WILL DRIFT OVER HUDSON BAY ON THURSDAY AND REMAIN THERE
THROUGH THE WEEKEND WHILE SLOWLY FILLING TO 29.5 INCHES. EXPECT
TROUGHS AVERAGING 29.7 INCHES...ROTATING AROUND THE HUDSON BAY
LOW...TO CROSS THE UPPER GREAT LAKES TONIGHT...THURSDAY NIGHT...AND
SATURDAY NIGHT INTO SUNDAY MORNING.

LSZ162-291600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
349 AM EDT WED JUL 29 2015

...GALE WARNING IN EFFECT FROM 8 AM EDT /7 AM CDT/ THIS MORNING
THROUGH THIS EVENING...

.EARLY THIS MORNING...SOUTHWEST WINDS 20 TO 30 KNOTS. WAVES 1 TO
3 FEET BUILDING TO 3 TO 5 FEET.
.TODAY...SOUTHWEST GALES TO 40 KNOTS VEERING WEST BY MID
AFTERNOON. WAVES BUILDING TO 5 TO 9 FEET.
.TONIGHT...WEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO 35
KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET...THEN BUILDING
TO 3 TO 6 FEET.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST. WAVES CALM
TO 2 FEET.

$$

LSZ263-291600-
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-
349 AM EDT WED JUL 29 2015

...GALE WARNING IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS
EVENING...

.EARLY THIS MORNING...SOUTHWEST WINDS 20 TO 30 KNOTS. WAVES 1 TO
3 FEET BUILDING TO 3 TO 5 FEET.
.TODAY...SOUTHWEST GALES TO 40 KNOTS. WAVES BUILDING TO 6 TO
10 FEET.
.TONIGHT...WEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO 35
KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO 7 FEET.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT. WAVES SUBSIDING TO
CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ264-291600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
349 AM EDT WED JUL 29 2015

...GALE WARNING IN EFFECT FROM 11 AM EDT THIS MORNING THROUGH
THIS EVENING...

.EARLY THIS MORNING...SOUTHWEST WINDS 20 TO 30 KNOTS. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FEET.
.TODAY...SOUTHWEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO 40
KNOTS BY LATE MORNING. WAVES BUILDING TO 6 TO 10 FEET.
.TONIGHT...WEST GALES TO 35 KNOTS...DIMINISHING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. WAVES BUILDING TO 7 TO 10 FEET...THEN SUBSIDING TO 4
TO 7 FEET.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-291600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
349 AM EDT WED JUL 29 2015

.EARLY THIS MORNING...SOUTHWEST WINDS 15 TO 25 KNOTS. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FEET.
.TODAY...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS BY MID AFTERNOON. A FEW GALE FORCE GUSTS TO 35 KNOTS BY MID
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...WEST WINDS 20 TO 30 KNOTS. WAVES SUBSIDING TO 2 TO
4 FEET.
.THURSDAY...WEST WINDS 20 TO 30. WAVES BUILDING TO 3 TO 5
FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-291600-
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-
349 AM EDT WED JUL 29 2015

.EARLY THIS MORNING...SOUTH WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FEET.
.TODAY...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH EARLY AFTERNOON. WAVES BUILDING TO 6 TO
9 FEET.
.TONIGHT...WEST WINDS 20 TO 30 KNOTS...WITH A FEW GALE FORCE GUSTS
TO 35 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 7 TO 10 FEET...THEN
SUBSIDING TO 4 TO 7 FEET.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF THUNDERSTORMS THROUGH
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ267-291600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
349 AM EDT WED JUL 29 2015

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

$$

LSZ261-291600-
MAFOR 2909/
SUPERIOR WEST...GALE WARNING IN EFFECT...14550 11650 12640 11640
19650. WAVES 2 TO 3 FEET BUILDING TO 6 TO 9 FEET TODAY. WAVES SUBSIDING
TO 3 TO 6 FEET TONIGHT.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...12540 13550
11650 12640 19650. WAVES 2 TO 4 FEET BUILDING TO 6 TO 9 FEET
TODAY. WAVES 6 TO 10 FEET SUBSIDING TO 5 TO 7 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL 11430 12530 14640 11640. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET TODAY. WAVES 3 TO 5 FEET TONIGHT.

SUPERIOR EAST 11430 11420 11520 11610 12630 11530 11540. WAVES 1
TO 4 FEET TODAY...BUILDING TO 4 TO 7 FEET TONIGHT.

$$

SRF



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