Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 300807
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
407 AM EDT WED JUL 30 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A WEAK 30.1 INCH HIGH PRESSURE OVER THE UPPER GREAT LAKES
EARLY THIS MORNING WILL WEAKEN TODAY AND GIVE WAY TO A LOW PRESSURE
TROUGH AVERAGING 30.0 INCHES THAT WILL LINGER INTO THURSDAY TO THE
SOUTHWEST OF A 29.9 INCH LOW NEAR JAMES BAY. EXPECT ANOTHER 30.1 INCH
HIGH PRESSURE SYSTEM TO BUILD OVER LAKE SUPERIOR ON FRIDAY AND REMAIN
THROUGH SATURDAY. AS THIS HIGH SINKS INTO THE LOWER GREAT LAKES ON
SUNDAY...A LOW PRESSURE TROUGH AVERAGING 30.0 INCHES WILL APPROACH
THE UPPER LAKES TO THE SOUTH OF ANOTHER 30.2 INCH HIGH PRESSURE
CENTERED OVER SOUTHWEST HUDSON BAY.

LSZ162-301615-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
407 AM EDT WED JUL 30 2014 /307 AM CDT WED JUL 30 2014/

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

$$

LSZ263-301615-
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-
407 AM EDT WED JUL 30 2014

.EARLY THIS MORNING...WEST WINDS LESS THAN 10 KNOTS. WAVES CALM
TO 2 FEET.
.TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS BY MID AFTERNOON. WAVES CALM
TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS LESS THAN 10 KNOTS VEERING NORTH AFTER
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH
MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS LESS THAN 10 KNOTS BACKING SOUTHWEST BY
MID AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
LESS THAN 10 KNOTS AFTER MIDNIGHT. PATCHY FOG. WAVES CALM TO
2 FEET.
.FRIDAY...SOUTH WINDS LESS THAN 10 KNOTS. PATCHY FOG. WAVES CALM
TO 2 FEET.
.FRIDAY NIGHT...SOUTH WINDS LESS THAN 10 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES CALM
TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH. A CHANCE
OF SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ264-301615-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
407 AM EDT WED JUL 30 2014

.EARLY THIS MORNING...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH LESS THAN
10 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG.
WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES CALM
TO 2 FEET.
.SATURDAY...SOUTH WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES CALM TO
2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH. WAVES CALM
TO 2 FEET.

$$

LSZ265-301615-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
407 AM EDT WED JUL 30 2014

.EARLY THIS MORNING...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
.TODAY...WEST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS LESS THAN 10 KNOTS VEERING NORTH AFTER
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH
MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS LESS THAN 10 KNOTS. PATCHY FOG. WAVES
CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS LESS THAN 10 KNOTS INCREASING TO
5 TO 15 KNOTS AFTER MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH LESS
THAN 10 KNOTS AFTER MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. PATCHY FOG. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST. A
CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ266-301615-
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-
407 AM EDT WED JUL 30 2014

.EARLY THIS MORNING...NORTHWEST WINDS 5 TO 15 KNOTS. AREAS OF
FOG...MAINLY NEAR THE UPPER MICHIGAN SHORELINE. WAVES CALM TO 2
FEET.
.TODAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS LESS THAN 10 KNOTS VEERING NORTH AFTER
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH
MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS LESS THAN 10 KNOTS BECOMING
SOUTH 5 TO 15 KNOTS AFTER MIDNIGHT. PATCHY FOG. WAVES CALM TO
2 FEET.
.FRIDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...EAST WINDS LESS THAN 10 KNOTS VEERING SOUTH AFTER
MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES CALM TO
2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ267-301615-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
407 AM EDT WED JUL 30 2014

.EARLY THIS MORNING...NORTHWEST WINDS 5 TO 15 KNOTS. AREAS OF
FOG...MAINLY NEAR THE UPPER MICHIGAN SHORELINE. WAVES CALM TO 2
FEET.
.TODAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG. A SLIGHT CHANCE OF
RAIN SHOWERS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...WEST WINDS LESS THAN 10 KNOTS. PATCHY FOG. A SLIGHT
CHANCE OF THUNDERSTORMS THROUGH MIDNIGHT. A SLIGHT CHANCE OF RAIN
SHOWERS. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES CALM TO
2 FEET.
.THURSDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
LESS THAN 10 KNOTS AFTER MIDNIGHT. PATCHY FOG. WAVES CALM TO
2 FEET.
.FRIDAY...SOUTHEAST WINDS LESS THAN 10 KNOTS BACKING EAST BY MID
AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...EAST WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS. PATCHY FOG. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. A CHANCE
OF SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ261-301615-
MAFOR 3009/
SUPERIOR WEST 11600 11500 13510 12600 11700. SLIGHT CHANCE OF RAIN
SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND EVENING. WAVES 2 FEET
OR LESS.

SUPERIOR NORTH CENTRAL 12600 12610 11510 11500 11600 11800. PATCHY
FOG THIS AFTERNOON AND TONIGHT. SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS THIS AFTERNOON AND EVENING. WAVES 2 FEET OR LESS.

SUPERIOR SOUTH CENTRAL 11700 12600 11500 12400 11500 11600. PATCHY
FOG. SLIGHT CHANCE OF RAIN SHOWERS AND THUNDERSTORMS THIS AFTERNOON
AND EVENING. SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES 2
FEET OR LESS.

SUPERIOR EAST 12700 14600 12500. PATCHY FOG. SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING. SLIGHT CHANCE OF RAIN SHOWERS TONIGHT.
WAVES 1 FOOT OR LESS.

$$

SRF






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