Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 271346
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
946 AM EDT SAT JUN 27 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.0 INCH HIGH PRESSURE WILL REMAIN CENTERED OVER LAKE
SUPERIOR TODAY TO THE NORTH OF A 29.7 INCH LOW PRESSURE SYSTEM
MIGRATING EAST THROUGH THE OHIO RIVER VALLEY. AS THIS LOW MOVES INTO
THE MID ATLANTIC STATES LATER TODAY AND TONIGHT...EXPECT THIS LOW TO
DEEPEN TO 29.5 INCHES AND THE RIDGE OVER LAKE SUPERIOR TO WEAKEN. ON
SUNDAY...A LOW PRESSURE TROUGH AVERAGING 29.7 INCHES WILL DEVELOP
OVER THE WESTERN GREAT LAKES AND UPPER MIDWEST. AS THIS TROUGH SINKS
INTO THE LOWER LAKES ON MONDAY...LOOK FOR ANOTHER 29.7 INCH LOW
PRESSURE TROUGH TO DROP THROUGH ONTARIO AND INTO THE UPPER GREAT
LAKES. A 30.0 INCH HIGH PRESSURE OVER CENTRAL CANADA WILL FOLLOW INTO
ONTARIO ON TUESDAY AND THEN NEAR LAKE SUPERIOR ON WEDNESDAY.

LSZ162-272200-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
946 AM EDT SAT JUN 27 2015

.REST OF TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS LESS THAN 10 KNOTS. A CHANCE OF SHOWERS
THROUGH EARLY AFTERNOON...THEN SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS LESS THAN 10 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-272200-
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-
946 AM EDT SAT JUN 27 2015

.REST OF TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES
CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS LESS THAN 10 KNOTS. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS LESS THAN 10 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.TUESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST. WAVES
CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.

$$

LSZ264-272200-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
946 AM EDT SAT JUN 27 2015

.REST OF TODAY...SOUTH WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES
CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS LESS THAN 10 KNOTS. A SLIGHT CHANCE OF SHOWERS.
A SLIGHT CHANCE OF THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2
FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST. WAVES
CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.

$$

LSZ265-272200-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
946 AM EDT SAT JUN 27 2015

.REST OF TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS LESS THAN 10 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.

$$

LSZ266-272200-
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-
946 AM EDT SAT JUN 27 2015

.REST OF TODAY...SOUTH WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS LESS THAN 10 KNOTS. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES CALM TO 2
FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM
TO 2 FEET.

$$

LSZ267-272200-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
946 AM EDT SAT JUN 27 2015

.REST OF TODAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH BY
MID AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTH LESS THAN
10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS LESS THAN 10 KNOTS BACKING NORTHEAST BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...EAST WINDS LESS THAN 10 KNOTS BECOMING SOUTH 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$
LSZ261-272200-
MAFOR 2715/
SUPERIOR WEST 12500 11400 11300 11400 11410 12400. PATCHY FOG
THROUGH THIS AFTERNOON. WAVES 1 FOOT OR LESS.

SUPERIOR NORTH CENTRAL 13400 14300 11300. PATCHY FOG THROUGH THIS
AFTERNOON. WAVES 1 FOOT OR LESS.

SUPERIOR SOUTH CENTRAL 12300 11200 12300 13400. PATCHY FOG THROUGH
THIS AFTERNOON. WAVES 1 FOOT OR LESS.

SUPERIOR EAST 11600 11100 12200 13300 11400. PATCHY FOG THROUGH THIS
AFTERNOON. WAVES 1 FOOT OR LESS.

$$

MZ


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