Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 201355
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
955 AM EDT WED JUL 20 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.3 INCH HIGH PRESSURE CENTERED OVER THE LOWER GREAT
LAKES WILL DRIFT SOUTHEASTWARD TO THE MID ATLANTIC STATES THIS
AFTERNOON. A 29.7 INCH TROUGH EXTENDING FROM NORTHERN MANITOBA TO
THE NORTHERN HIGH PLAINS WILL DRIFT EASTWARD AND PASS ACROSS THE
UPPER GREAT LAKES THURSDAY EVENING. ON FRIDAY...A WEAK 29.9 INCH
RIDGE WILL BUILD INTO THE UPPER GREAT LAKES AND THEN PUSH EASTWARD ON
SATURDAY AS A 29.7 INCH TROUGH OF LOW PRESSURE MOVES IN FROM THE
DAKOTAS SATURDAY NIGHT INTO SUNDAY.

LSZ162-202200-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
955 AM EDT WED JUL 20 2016 /855 AM CDT WED JUL 20 2016/

.REST OF TODAY...VARIABLE WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
BY MID AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. PATCHY FOG. SCATTERED SHOWERS AND THUNDERSTORMS. WAVES
CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH LESS
THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ263-202200-
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-
955 AM EDT WED JUL 20 2016

.REST OF TODAY...SOUTH WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES
CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. PATCHY FOG. SCATTERED SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTH. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ264-202200-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
955 AM EDT WED JUL 20 2016

.REST OF TODAY...SOUTH WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES
CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. PATCHY FOG. SCATTERED SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. PATCHY FOG. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING 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 BUILDING TO 2 TO
4 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ265-202200-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
955 AM EDT WED JUL 20 2016

.REST OF TODAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. SCATTERED SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. PATCHY FOG THROUGH
MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS...THEN SHOWERS
AND THUNDERSTORMS LIKELY. WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS.
A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ266-202200-
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-
955 AM EDT WED JUL 20 2016

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. PATCHY FOG. SCATTERED SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO
3 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING
TO 1 TO 3 FEET.
.THURSDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ267-202200-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
955 AM EDT WED JUL 20 2016

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS. PATCHY FOG. SCATTERED
SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO
3 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. PATCHY FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$
LSZ261-202200-
MAFOR 2015/
SUPERIOR WEST 11900 13300 11400 13510. PATCHY FOG. SCATTERED SHOWERS
AND THUNDERSTORMS LATE TONIGHT INTO THURSDAY MORNING. WAVES 2 FEET
OR LESS.

SUPERIOR NORTH CENTRAL 14400 11400 11500 12510. PATCHY FOG. SCATTERED
SHOWERS AND THUNDERSTORMS LATE TONIGHT INTO THURSDAY MORNING. WAVES
1 TO 2 FEET.

SUPERIOR SOUTH CENTRAL 14410 11410 13510. SCATTERED SHOWERS AND
THUNDERSTORMS LATE TONIGHT INTO THURSDAY MORNING. WAVES 1 TO 3 FEET.

SUPERIOR EAST 13410 12420 13510. PATCHY FOG. SCATTERED SHOWERS
AND THUNDERSTORMS LATE TONIGHT INTO THURSDAY MORNING. WAVES 1 TO 4
FEET.

$$

JLA



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