Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 271359
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
959 AM EDT WED MAY 27 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.8 INCH TROUGH WILL REMAIN OVER LAKE SUPERIOR
THROUGH TODAY. THE TROUGH OVER LAKE SUPERIOR WILL WEAKEN TO 30.0
INCHES TONIGHT. 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.

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

.REST OF TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS BY MID AFTERNOON.
WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH
MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH MIDNIGHT. WAVES
CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS 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 BUILDING TO
1 TO 3 FEET...THEN SUBSIDING TO 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.

$$

LSZ263-272200-
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-
959 AM EDT WED MAY 27 2015

.REST OF TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY
MID AFTERNOON. AREAS OF FOG. A SLIGHT CHANCE OF RAIN SHOWERS. A
SLIGHT CHANCE OF THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO
2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH
MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS 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 SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS VEERING EAST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. 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-
959 AM EDT WED MAY 27 2015

.REST OF TODAY...WEST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A SLIGHT
CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES 1 TO 3 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST 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 SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN
SHOWERS THROUGH MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-272200-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
959 AM EDT WED MAY 27 2015

.REST OF TODAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON.
A CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. AREAS OF FOG. RAIN SHOWERS AND A CHANCE OF
THUNDERSTORMS. WAVES SUBSIDING TO 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 THROUGH
MIDNIGHT. 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.

$$

LSZ266-272200-
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-
959 AM EDT WED MAY 27 2015

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

$$

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

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

$$
LSZ261-272200-
MAFOR 2715/
SUPERIOR WEST 11513 11510 11600 11810 11210 12110 11120. PATCHY
FOG AFTER MIDNIGHT TONIGHT. WAVES 1 TO 3 FEET.

SUPERIOR NORTH CENTRAL 11613 11610 11710 11810 13110 11210.
PATCHY FOG LATE THIS AFTERNOON AND EVENING. WAVES 1 TO 3 FEET.

SUPERIOR SOUTH CENTRAL 11610 11600 11700 13800 11100 11210.
PATCHY FOG THIS AFTERNOON. PATCHY FOG AFTER MIDNIGHT TONIGHT.
WAVES 2 FEET OR LESS.

SUPERIOR EAST 11713 11710 11700 11703 11103 11110 12120. PATCHY
FOG EARLY THIS AFTERNOON. CHANCE OF RAIN SHOWERS EARLY THIS
AFTERNOON. PATCHY FOG LATE THIS EVENING. WAVES 1 TO 3 FEET.

$$

KEC



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