Great Lakes Forecast
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674
FZUS63 KMQT 160207
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1007 PM EDT FRI MAY 15 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...30.0 INCH HIGH PRESSURE OVER NORTHERN LAKE MICHIGAN
TONIGHT WILL SLOWLY MOVE EAST THROUGH SUNDAY AS 29.5 INCH LOW
PRESSURE ORGANIZES OVER THE CENTRAL AND NORTHERN PLAINS. THIS LOW
WILL TRACK TO NORTHERN MINNESOTA SUNDAY EVENING AND CROSS LAKE
SUPERIOR MONDAY AFTERNOON AND EVENING. EXPECT THE LOW TO TRACK
NORTHEAST OVER QUEBEC ON TUESDAY WHILE WEAKENING TO 29.8 INCHES.
HIGH PRESSURE OF 30.5 INCHES OVER THE NORTHERN PLAINS TUESDAY
MORNING WILL WEAKEN TO 30.4 INCHES AS IT SHIFTS EASTWARD TO
MINNESOTA WEDNESDAY AFTERNOON.

LSZ162-161015-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1007 PM EDT FRI MAY 15 2015

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

$$

LSZ263-161015-
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-
1007 PM EDT FRI MAY 15 2015

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

$$

LSZ264-161015-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1007 PM EDT FRI MAY 15 2015

.REST OF TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST
LESS THAN 10 KNOTS AFTER MIDNIGHT. AREAS OF FOG. WAVES CALM TO
2 FEET.
.SATURDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON. AREAS OF FOG THROUGH EARLY AFTERNOON.
WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS. PATCHY FOG. A CHANCE OF
SHOWERS AND THUNDERSTORMS THROUGH EARLY AFTERNOON...THEN SHOWERS AND
THUNDERSTORMS LIKELY. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO 25 KNOTS
BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A CHANCE OF
RAIN SHOWERS. WAVES 1 TO 3 FEET.
.MONDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS. A CHANCE OF RAIN
SHOWERS...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 4 TO
7 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-161015-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1007 PM EDT FRI MAY 15 2015

.REST OF TONIGHT...SOUTHEAST WINDS LESS THAN 10 KNOTS VEERING
SOUTH AFTER MIDNIGHT. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. AREAS OF FOG THROUGH EARLY AFTERNOON. WAVES
CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. PATCHY FOG. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO
3 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS. PATCHY FOG. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH
AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF THUNDERSTORMS THROUGH
MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A
CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. A CHANCE
OF SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-161015-
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-
1007 PM EDT FRI MAY 15 2015

.REST OF TONIGHT...VARIABLE WINDS LESS THAN 10 KNOTS. AREAS OF FOG.
WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS. PATCHY FOG. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS. PATCHY FOG. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTH WINDS 15 TO 25 KNOTS VEERING NORTHWEST BY MID
AFTERNOON. PATCHY FOG. A CHANCE OF RAIN SHOWERS. WAVES 1 TO
3 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 5 TO 8 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. WAVES BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ267-161015-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1007 PM EDT FRI MAY 15 2015

.REST OF TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS LESS THAN 10 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS AFTER MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. PATCHY FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. PATCHY FOG. RAIN SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS THROUGH MIDNIGHT. WAVES SUBSIDING TO 1 TO 3
FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. PATCHY FOG. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 5 TO 8 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. WAVES BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO 1 TO
3 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$
LSZ261-161015-
MAFOR 1603/
SUPERIOR WEST 11203 12103 11213 11123 13130. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 11503 11603 11503 11303 11313 11320 11220
11230. WAVES 2 FEET OR LESS.

SUPERIOR SOUTH CENTRAL 11403 11503 11103 11203 11323 11220 12230.
WAVES 1 TO 3 FEET.

SUPERIOR EAST 11500 11600 11703 11603 11300 11200 12220. WAVES 2
FEET OR LESS.

$$

JS



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