Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 210814
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
414 AM EDT MON JUL 21 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.1 INCH HIGH PRESSURE RIDGE WILL LINGER ALONG THE
EAST COAST THROUGH TUESDAY. MEANWHILE...A 29.4 INCH LOW PRESSURE
CURRENTLY OVER NORTHEAST MANITOBA WILL MOVE OVER HUDSON BAY TODAY
WHILE ANOTHER LOW OF 29.6 INCHES DEVELOPS OVER THE DAKOTAS. THE LOW
OVER THE DAKOTAS WILL THEN TRACK EAST...PASSING ACROSS THE UPPER
GREAT LAKES TUESDAY. IN ITS WAKE...HIGH PRESSURE OF 30.2 INCHES OVER
LAKE WINNIPEG TUESDAY NIGHT WILL BUILD SOUTHEAST AND SETTLE OVER THE
UPPER GREAT LAKES THURSDAY. THE HIGH WILL THEN WEAKEN TO 30.1 INCHES
AS IT DRIFTS OVER THE GREAT LAKES REGION FRIDAY.

LSZ162-211615-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
414 AM EDT MON JUL 21 2014 /314 AM CDT MON JUL 21 2014/

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

$$

LSZ263-211615-
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-
414 AM EDT MON JUL 21 2014

.EARLY THIS MORNING...SOUTHWEST WINDS 10 TO 20 KNOTS. PATCHY FOG.
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING. PATCHY FOG. WAVES BUILDING TO 1 TO 3
FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. AREAS OF FOG. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT...THEN SHOWERS AND THUNDERSTORMS
LIKELY. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH BY MID
AFTERNOON. AREAS OF FOG. SHOWERS AND THUNDERSTORMS LIKELY THROUGH
EARLY AFTERNOON...THEN A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS LESS THAN 10 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM TO
2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.

$$

LSZ264-211615-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
414 AM EDT MON JUL 21 2014

.EARLY THIS MORNING...SOUTHWEST WINDS 15 TO 25 KNOTS. PATCHY FOG.
A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING. PATCHY FOG. WAVES SUBSIDING TO CALM TO
2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. AREAS OF FOG. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT...THEN SHOWERS AND THUNDERSTORMS
LIKELY. WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. AREAS OF FOG. SHOWERS AND
THUNDERSTORMS LIKELY THROUGH EARLY AFTERNOON...THEN A SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. WAVES
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-211615-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
414 AM EDT MON JUL 21 2014

.EARLY THIS MORNING...SOUTH WINDS 15 TO 25 KNOTS. PATCHY FOG. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FEET
SUBSIDING TO CALM TO 2 FEET.
.TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. PATCHY
FOG BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. AREAS OF FOG. SHOWERS AND
THUNDERSTORMS LIKELY LATE. WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS BY MID AFTERNOON. AREAS OF FOG. SHOWERS AND
THUNDERSTORMS THROUGH EARLY AFTERNOON...THEN A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
1 TO 3 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. AREAS OF FOG. WAVES BUILDING TO 2 TO 4
FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.
.FRIDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-211615-
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-
414 AM EDT MON JUL 21 2014

.EARLY THIS MORNING...SOUTH WINDS 15 TO 25 KNOTS. PATCHY FOG. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET.
.TODAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS LATE. WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. AREAS OF FOG. SHOWERS AND THUNDERSTORMS THROUGH EARLY
AFTERNOON...THEN A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT. AREAS OF FOG. WAVES BUILDING TO
3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ267-211615-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
414 AM EDT MON JUL 21 2014

.EARLY THIS MORNING...SOUTH WINDS 15 TO 25 KNOTS. PATCHY FOG.
WAVES 1 TO 3 FEET.
.TODAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS. AREAS OF FOG. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS LATE. WAVES BUILDING TO 1 TO 3
FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY...THEN SHOWERS AND THUNDERSTORMS LIKELY BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO
3 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT. AREAS OF FOG. WAVES BUILDING TO
3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM
TO 2 FEET.

$$

LSZ261-211615-
MAFOR 2109/
SUPERIOR WEST 13520 11410 11400 12313 11329. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY THIS MORNING. PATCHY FOG TODAY. AREAS
OF FOG TONIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES
2 FEET OR LESS.

SUPERIOR NORTH CENTRAL 12530 12520 11410 12313 11323. CHANCE OF
SHOWERS AND THUNDERSTORMS THIS MORNING. PATCHY FOG TODAY. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 3 FEET OR LESS.

SUPERIOR SOUTH CENTRAL 11430 12420 11410 11310 12410 11420. PATCHY
FOG. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THIS MORNING. WAVES
3 FEET OR LESS.

SUPERIOR EAST 12430 11420 12410 13423. PATCHY FOG TODAY. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS TODAY. WAVES 1 TO 3 FEET.

$$

ROLFSON



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