Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 262008
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
408 PM EDT TUE MAY 26 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.8 INCH TROUGH WILL REMAIN OVER LAKE SUPERIOR
THROUGH WEDNESDAY. A 29.7 INCH LOW PRESSURE SYSTEM WILL MOVE ALONG
THIS TROUGH AND CROSS UPPER MICHIGAN TONIGHT. THIS TROUGH WILL
WEAKEN TO 30.0 INCHES WEDNESDAY NIGHT OVER LAKE SUPERIOR. A 29.8 INCH
TROUGH OF LOW PRESSURE WILL DEVELOP IN THE NORTHERN PLAINS THURSDAY
MORNING AND THEN CROSS LAKE SUPERIOR ON FRIDAY. A 30.4 INCH HIGH
PRESSURE WILL BUILD OVER THE UPPER GREAT LAKES ON SATURDAY.AND
REMAIN OVER THE GREAT LAKES THROUGH SUNDAY.

LSZ162-270415-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
408 PM EDT TUE MAY 26 2015

.LATE THIS AFTERNOON...NORTHEAST WINDS 5 TO 15 KNOTS. AREAS OF
FOG. ISOLATED RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. AREAS OF FOG. ISOLATED RAIN SHOWERS. WAVES CALM TO
2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH
EARLY AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE
OF THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 1 TO 3 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
LESS THAN 10 KNOTS AFTER MIDNIGHT. PATCHY FOG. RAIN SHOWERS
LIKELY THROUGH MIDNIGHT. A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-270415-
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-
408 PM EDT TUE MAY 26 2015

.LATE THIS AFTERNOON...NORTHEAST WINDS 5 TO 15 KNOTS. AREAS OF
FOG. SCATTERED RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING WEST AFTER
MIDNIGHT. AREAS OF FOG. SCATTERED RAIN SHOWERS. WAVES CALM TO
2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH
EARLY AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE
OF THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF RAIN SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH BY MID
AFTERNOON. AREAS OF FOG. RAIN SHOWERS LIKELY THROUGH EARLY
AFTERNOON. A CHANCE OF THUNDERSTORMS. A CHANCE OF RAIN SHOWERS BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST. WAVES
CALM TO 2 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES CALM
TO 2 FEET.

$$

LSZ264-270415-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
408 PM EDT TUE MAY 26 2015

.LATE THIS AFTERNOON...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG.
ISOLATED RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. AREAS OF FOG. SCATTERED RAIN SHOWERS. WAVES CALM TO
2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH EARLY
AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH EARLY
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH
AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF RAIN SHOWERS. WAVES 1 TO
3 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTH BY MID
AFTERNOON. AREAS OF FOG. SHOWERS AND THUNDERSTORMS LIKELY THROUGH
EARLY AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES CALM
TO 2 FEET.

$$

LSZ265-270415-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
408 PM EDT TUE MAY 26 2015

.LATE THIS AFTERNOON...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG.
NUMEROUS RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. AREAS OF FOG. RAIN SHOWERS. WAVES CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A
CHANCE OF RAIN SHOWERS THROUGH EARLY AFTERNOON. WAVES BUILDING TO
1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES
CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF SHOWERS. WAVES BUILDING
TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. AREAS OF FOG. SHOWERS AND
THUNDERSTORMS LIKELY. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES BUILDING
TO 2 TO 4 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES CALM
TO 2 FEET.

$$

LSZ266-270415-
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-
408 PM EDT TUE MAY 26 2015

.LATE THIS AFTERNOON...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG.
SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS. WAVES CALM TO
2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER MIDNIGHT.
AREAS OF FOG. ISOLATED THUNDERSTORMS THROUGH MIDNIGHT. RAIN
SHOWERS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A
CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO 15 KNOTS
BY MID AFTERNOON. AREAS OF FOG. SHOWERS AND THUNDERSTORMS LIKELY.
WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
.SATURDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES CALM
TO 2 FEET.

$$

LSZ267-270415-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
408 PM EDT TUE MAY 26 2015

.LATE THIS AFTERNOON...NORTHEAST WINDS LESS THAN 10 KNOTS. AREAS
OF FOG. SCATTERED RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. RAIN SHOWERS
AND ISOLATED THUNDERSTORMS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON.
RAIN SHOWERS LIKELY THROUGH EARLY AFTERNOON...THEN A CHANCE OF
RAIN SHOWERS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET...
THEN SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...EAST WINDS LESS THAN 10 KNOTS INCREASING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF THUNDERSTORMS THROUGH EARLY
AFTERNOON. RAIN SHOWERS LIKELY. THUNDERSTORMS LIKELY BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES BUILDING
TO 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ261-270415-
MAFOR 2621/
SUPERIOR WEST 12103 11803 11703 11613 13510. SCATTERED SHOWERS
AFTER MIDNIGHT TONIGHT. PATCHY FOG EARLY WEDNESDAY AFTERNOON.
WAVES 2 FEET OR LESS.

SUPERIOR NORTH CENTRAL 12203 11106 11806 11713 13610. SCATTERED
RAIN SHOWERS THIS EVENING. SCATTERED SHOWERS LATE WEDNESDAY MORNING.
WAVES 2 FEET OR LESS.

SUPERIOR SOUTH CENTRAL 12206 11116 11816 11716 11726 11620 11710.
PATCHY FOG. CHANCE OF SHOWERS EARLY WEDNESDAY AFTERNOON. WAVES CALM
TO 3 FEET WEDNESDAY.

SUPERIOR EAST 11103 11116 11216 12116 11716 11726 11720.
SCATTERED RAIN SHOWERS EARLY THIS EVENING. ISOLATED THUNDERSTORMS
THROUGH LATE EVENING. PATCHY FOG EARLY IN THE AFTERNOON. CHANCE OF
RAIN SHOWERS LATE WEDNESDAY AFTERNOON. WAVES CALM TO 4 FEET
WEDNESDAY.

$$

PETRO


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