Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 191958
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
358 PM EDT SUN MAR 19 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.9 INCH TROUGH WILL OVER THE UPPER MISSISSIPPI
VALLEY LATE THIS AFTERNOON WILL CROSS LAKE SUPERIOR TONIGHT AND
THE LOWER GREAT LAKES ON MONDAY. A 30.6 INCH HIGH PRESSURE WILL
DRIFT ACROSS THE UPPER GREAT LAKES ON WEDNESDAY BEFORE REACHING
THE EAST COAST ON THURSDAY AS A 29.4 INCH LOW PRESSURE ORGANIZES
OVER THE WESTERN PLAINS. BY FRIDAY AFTERNOON...THIS LOW WILL
BECOME PART OF A 29.7 INCH TROUGH EXTENDING FROM THE CENTRAL
PLAINS TO THE WESTERN GREAT LAKES.

LSZ162-200400-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
358 PM EDT SUN MAR 19 2017 /258 PM CDT SUN MAR 19 2017/

.LATE THIS AFTERNOON...SOUTHEAST WINDS 5 TO 15 KNOTS. ISOLATED
RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES CALM TO 2
FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MIDNIGHT...THEN VEERING NORTHWEST AFTER MIDNIGHT.
WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST BY LATE
MORNING. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MIDNIGHT...THEN BECOMING NORTHWEST 15 TO 25 KNOTS
AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.TUESDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW AFTER MIDNIGHT.
WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. RAIN...POSSIBLY MIXED WITH SNOW. WAVES SUBSIDING TO
CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW. WAVES
BUILDING TO 3 TO 6 FEET.

$$

LSZ263-200400-
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-
358 PM EDT SUN MAR 19 2017

.LATE THIS AFTERNOON...SOUTHEAST WINDS 10 TO 15 KNOTS. ISOLATED
RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES 1 TO 3
FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING WEST AFTER MIDNIGHT.
WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.MONDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY LATE
MORNING. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
2 TO 4 FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MIDNIGHT...THEN VEERING NORTHWEST LATE. WAVES
SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 3 TO 5 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES 1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. RAIN...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. A CHANCE OF RAIN AND SNOW. WAVES BUILDING TO 4 TO
7 FEET.

$$

LSZ264-200400-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
358 PM EDT SUN MAR 19 2017

.LATE THIS AFTERNOON...SOUTHEAST WINDS 15 TO 25 KNOTS. ISOLATED
RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES 3 TO 6
FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MIDNIGHT...THEN VEERING WEST AFTER MIDNIGHT. ISOLATED
RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE
EVENING. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. ISOLATED RAIN SHOWERS LATE. WAVES
SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MIDNIGHT...THEN VEERING NORTHWEST LATE. A SLIGHT
CHANCE OF RAIN AND SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO
3 TO 6 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS. FREEZING SPRAY THROUGH
EARLY AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
3 TO 5 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. SNOW...POSSIBLY MIXED WITH RAIN. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. A CHANCE OF RAIN AND SNOW. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 5 TO 8 FEET.

$$

LSZ265-200400-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
358 PM EDT SUN MAR 19 2017

.LATE THIS AFTERNOON...SOUTHEAST WINDS 15 TO 25 KNOTS. ISOLATED
RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES 2 TO 4
FEET BUILDING TO 3 TO 5 FEET.
.TONIGHT...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT...THEN BECOMING WEST 15 TO 25 KNOTS LATE.
SCATTERED RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS
THROUGH MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES 1 TO 3 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST
20 TO 30 KNOTS LATE. A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS
AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY. A CHANCE
OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY THROUGH MIDNIGHT. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. RAIN AND SNOW. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS. RAIN AND SNOW LIKELY...THEN A CHANCE OF SNOW...POSSIBLY
MIXED WITH RAIN. WAVES BUILDING TO 5 TO 9 FEET.

$$

LSZ266-200400-
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-
358 PM EDT SUN MAR 19 2017

.LATE THIS AFTERNOON...SOUTHEAST WINDS 20 TO 30 KNOTS. A SLIGHT
CHANCE OF THUNDERSTORMS AND ISOLATED RAIN SHOWERS. WAVES 3 TO
6 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MIDNIGHT...THEN VEERING SOUTHWEST LATE. SCATTERED
RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS THROUGH
MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO
5 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST BY LATE
MORNING. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT...THEN VEERING NORTHWEST LATE. A SLIGHT
CHANCE OF RAIN AND SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO
3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...NORTH GALES TO 35 KNOTS. FREEZING SPRAY. A CHANCE OF
SNOW SHOWERS. WAVES BUILDING TO 4 TO 7 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES 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...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.THURSDAY...SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. RAIN AND SNOW. WAVES BUILDING TO 3 TO 6 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS. RAIN...POSSIBLY MIXED WITH SNOW...THEN A CHANCE OF
SNOW...POSSIBLY MIXED WITH RAIN. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 6 TO 9 FEET.

$$

LSZ267-200400-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
358 PM EDT SUN MAR 19 2017

.LATE THIS AFTERNOON...SOUTHEAST WINDS 15 TO 25 KNOTS. WAVES CALM
TO 2 FEET BUILDING TO 1 TO 3 FEET.
.TONIGHT...SOUTH WINDS 15 TO 25 KNOTS VEERING SOUTHWEST LATE.
SCATTERED RAIN SHOWERS...BECOMING ISOLATED LATE. WAVES BUILDING
TO 3 TO 6 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST BY LATE
MORNING. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO
4 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST BY
MIDNIGHT...THEN INCREASING TO 15 TO 25 KNOTS AFTER MIDNIGHT. A
SLIGHT CHANCE OF RAIN AND SNOW SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 3 TO 5 FEET.
.TUESDAY...NORTH GALES TO 35 KNOTS. FREEZING SPRAY. A CHANCE OF
SNOW SHOWERS. WAVES BUILDING TO 4 TO 7 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES 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...WEST WINDS 10 TO 20 KNOTS BACKING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 15 TO 25 KNOTS. SNOW...POSSIBLY MIXED
WITH RAIN. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO
3 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS. RAIN AND SNOW LIKELY. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 4 TO 7 FEET.

$$

LSZ261-200400-
MAFOR 1921/
SUPERIOR WEST 11410 12520 11620 12720 12620. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 12430 11420 11520 11620 11730 11720 11630.
SCATTERED RAIN SHOWERS THROUGH EARLY EVENING. WAVES 2 TO 6 FEET.

SUPERIOR SOUTH CENTRAL 12430 11420 11520 11620 13720. SCATTERED
RAIN SHOWERS THIS EVENING. WAVES 1 TO 5 FEET.

SUPERIOR EAST 12440 11446 11530 11520 11630 12730. WAVES 2 TO 3
FEET BUILDING TO 4 TO 7 FEET TONIGHT. WAVES 3 TO 5 FEET MONDAY.

$$

KLUBER



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