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National Weather Service Marine Forecast FZUS63 KMQT

FZUS63 KMQT 302005
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
405 PM EDT SUN APR 30 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS, WHICH
IS THE AVERAGE OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL
OCCASIONALLY BE ENCOUNTERED.

SYNOPSIS
HIGH PRESSURE OF 30.3 INCHES CENTERED NEAR JAMES BAY
WILL EXIT OVER QUEBEC TONIGHT. MEANWHILE...LOW PRESSURE OF 29.4
INCHES OVER THE MID MISSISSIPPI VALLEY WILL DEEPEN TO 29.2 INCHES
AS IT LIFTS NORTHEAST INTO WESTERN WISCONSIN ON MONDAY MORNING.
THIS LOW WILL REACH CENTRAL UPPER MICHIGAN MONDAY EVENING AND
SOUTHERN QUEBEC TUESDAY AFTERNOON. IN ITS WAKE...A HIGH PRESSURE
RIDGE OF 29.9 INCHES DEVELOPING OVER THE UPPER MISSISSIPPI VALLEY
TUESDAY AFTERNOON WILL BUILD TO 30.2 INCHES OVER THE GREAT LAKES
REGION ON WEDNESDAY AFTERNOON. THE RIDGE WILL THEN WEAKEN ON
THURSDAY MORNING AS A LOW PRESSURE TROUGH OF 29.9 INCHES
APPROACHES FROM THE NORTHWEST. A 30.1 INCH RIDGE FOLLOWS ON
THURSDAY AFTERNOON AND WEAKENS TO 30.0 INCHES OVER THE UPPER GREAT
LAKES ON FRIDAY.

LSZ162-010415-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
405 PM EDT SUN APR 30 2017 /305 PM CDT SUN APR 30 2017/

...GALE WARNING IN EFFECT FROM 8 PM EDT /7 PM CDT/ THIS EVENING
THROUGH MONDAY AFTERNOON...

LATE THIS AFTERNOON
NORTHEAST WINDS 20 TO 30 KNOTS. SCATTERED
RAIN SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET BUILDING
TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.

TONIGHT
NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS AFTER MIDNIGHT. SCATTERED RAIN SHOWERS THROUGH
MIDNIGHT...THEN RAIN SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO
5 TO 8 FEET OCCASIONALLY TO 10 FEET.

MONDAY
NORTHEAST GALES TO 40 KNOTS. SCATTERED SNOW SHOWERS
THROUGH EARLY AFTERNOON. RAIN SHOWERS. SNOW SHOWERS BY MID
AFTERNOON. WAVES BUILDING TO 7 TO 11 FEET OCCASIONALLY TO
14 FEET.

MONDAY NIGHT
NORTH WINDS 20 TO 30 KNOTS. RAIN SHOWERS AND SNOW
SHOWERS LIKELY THROUGH MIDNIGHT...THEN A CHANCE OF RAIN AND SNOW
SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.

TUESDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS...POSSIBLY
MIXED WITH SNOW THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 1 TO
3 FEET.

TUESDAY NIGHT
WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.

WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.

WEDNESDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS...WITH A CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.

THURSDAY
WEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

FRIDAY
EAST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO 20 KNOTS.
WAVES CALM TO 2 FEET.



LSZ263-010415-
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-
405 PM EDT SUN APR 30 2017

...GALE WARNING IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY
EVENING...

LATE THIS AFTERNOON
NORTHEAST WINDS 15 TO 25 KNOTS. ISOLATED
RAIN SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET BUILDING
TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.

TONIGHT
NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS AFTER MIDNIGHT. SCATTERED RAIN SHOWERS. WAVES SUBSIDING
TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET...THEN BUILDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET.

MONDAY
NORTHEAST GALES TO 40 KNOTS. ISOLATED THUNDERSTORMS
THROUGH EARLY AFTERNOON. RAIN SHOWERS...POSSIBLY MIXED WITH SNOW
SHOWERS. WAVES BUILDING TO 7 TO 11 FEET OCCASIONALLY TO 14 FEET.

MONDAY NIGHT
NORTH GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. RAIN AND SNOW SHOWERS LIKELY THROUGH
MIDNIGHT...THEN RAIN SHOWERS LIKELY WITH A CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. WAVES SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10
FEET.

TUESDAY
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS...WITH A
CHANCE OF SNOW SHOWERS THROUGH EARLY AFTERNOON. WAVES SUBSIDING
TO 2 TO 4 FEET.

TUESDAY NIGHT
WEST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS
THAN 10 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.

WEDNESDAY
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.

WEDNESDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS...WITH A CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.

THURSDAY
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST. WAVES
BUILDING TO 1 TO 3 FEET.

FRIDAY
NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH. WAVES
SUBSIDING TO CALM TO 2 FEET.



LSZ264-010415-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
405 PM EDT SUN APR 30 2017

...GALE WARNING IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY
EVENING...

LATE THIS AFTERNOON
NORTHEAST WINDS 10 TO 20 KNOTS. WAVES 1 TO
3 FEET.

TONIGHT
NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. SCATTERED RAIN SHOWERS AFTER MIDNIGHT.
WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.

MONDAY
NORTHEAST GALES TO 40 KNOTS. RAIN SHOWERS AND ISOLATED
THUNDERSTORMS THROUGH EARLY AFTERNOON. RAIN SHOWERS MIXING WITH
SNOW SHOWERS BY MID AFTERNOON. WAVES BUILDING TO 7 TO 11 FEET
OCCASIONALLY TO 14 FEET.

MONDAY NIGHT
NORTHEAST WINDS 20 TO 30 KNOTS BACKING NORTH
AFTER MIDNIGHT. RAIN SHOWERS AND SNOW SHOWERS LIKELY. WAVES
SUBSIDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.

TUESDAY
NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS...WITH A
CHANCE OF SNOW SHOWERS THROUGH EARLY AFTERNOON. WAVES SUBSIDING
TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.

TUESDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.

WEDNESDAY
SOUTH WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.

WEDNESDAY NIGHT
SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH
SNOW AFTER MIDNIGHT. WAVES CALM TO 2 FEET.

THURSDAY
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST. A CHANCE
OF RAIN SHOWERS...WITH A CHANCE OF SNOW SHOWERS EARLY. WAVES
BUILDING TO 2 TO 4 FEET.

FRIDAY
NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH. WAVES
SUBSIDING TO CALM TO 2 FEET.



LSZ265-010415-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
405 PM EDT SUN APR 30 2017

...GALE WARNING IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY
AFTERNOON...

LATE THIS AFTERNOON
NORTHEAST WINDS 15 TO 25 KNOTS. WAVES 1 TO
3 FEET.

TONIGHT
EAST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. ISOLATED RAIN SHOWERS THROUGH MIDNIGHT...
THEN RAIN SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.

MONDAY
EAST GALES TO 35 KNOTS DIMINISHING TO 15 TO 25 KNOTS BY
MID AFTERNOON. RAIN SHOWERS...WITH ISOLATED THUNDERSTORMS THROUGH
EARLY AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11
FEET...THEN SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.

MONDAY NIGHT
NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH
20 TO 30 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY...WITH A
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 5
FEET OCCASIONALLY TO 7 FEET...THEN BUILDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.

TUESDAY
NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. A CHANCE OF RAIN AND SNOW SHOWERS THROUGH EARLY
AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.

TUESDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.

WEDNESDAY
WEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.

WEDNESDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.

THURSDAY
NORTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.

FRIDAY
NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.



LSZ266-010415-
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-
405 PM EDT SUN APR 30 2017

...GALE WARNING IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY
AFTERNOON...

LATE THIS AFTERNOON
NORTHEAST WINDS 10 TO 20 KNOTS. WAVES 2 TO
4 FEET SUBSIDING TO 1 TO 3 FEET.

TONIGHT
EAST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. ISOLATED RAIN SHOWERS THROUGH MIDNIGHT...
THEN RAIN SHOWERS AND ISOLATED THUNDERSTORMS AFTER MIDNIGHT.
WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.

MONDAY
EAST GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS BY
MID AFTERNOON. RAIN SHOWERS...WITH ISOLATED THUNDERSTORMS THROUGH
EARLY AFTERNOON. WAVES BUILDING TO 5 TO 9 FEET OCCASIONALLY TO 11
FEET.

MONDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH
20 TO 30 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY THROUGH
MIDNIGHT...THEN A CHANCE OF RAIN SHOWERS POSSIBLY MIXED WITH SNOW
AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO 8 FEET OCCASIONALLY TO 10
FEET.

TUESDAY
NORTH WINDS 20 TO 30 KNOTS. A CHANCE OF RAIN
SHOWERS...WITH A CHANCE OF SNOW SHOWERS THROUGH EARLY AFTERNOON. 
WAVES SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.

TUESDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.

WEDNESDAY
NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.

WEDNESDAY NIGHT
SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

THURSDAY
NORTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.

FRIDAY
NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.



LSZ267-010415-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
405 PM EDT SUN APR 30 2017

LATE THIS AFTERNOON
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.

TONIGHT
EAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. ISOLATED RAIN SHOWERS THROUGH MIDNIGHT...THEN
RAIN SHOWERS AND ISOLATED THUNDERSTORMS AFTER MIDNIGHT. WAVES
BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.

MONDAY
EAST WINDS 20 TO 30 KNOTS BECOMING SOUTHEAST 15 TO 25
KNOTS BY MID AFTERNOON. A FEW GALE FORCE GUSTS TO 35 KNOTS
POSSIBLE IN THE MORNING. RAIN SHOWERS AND ISOLATED THUNDERSTORMS
THROUGH EARLY AFTERNOON...THEN SCATTERED RAIN SHOWERS BY MID
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.

MONDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.

TUESDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS...WITH A
CHANCE OF SNOW SHOWERS THROUGH EARLY AFTERNOON. WAVES BUILDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.

TUESDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.

WEDNESDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.

WEDNESDAY NIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.

THURSDAY
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES
BUILDING TO 1 TO 3 FEET.

FRIDAY
NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.



LSZ261-010415-
MAFOR 3021/
SUPERIOR WEST...GALE WARNING IN EFFECT...13140 12156 11167 12156.
SCATTERED RAIN SHOWERS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS
LATE MONDAY MORNING. WAVES 3 TO 6 FEET BUILDING TO 5 TO 7 FEET
TONIGHT. WAVES 6 TO 10 FEET BUILDING TO 8 TO 11 FEET MONDAY.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...12120 11130
11140 14156. SCATTERED RAIN SHOWERS LATE TONIGHT. WAVES 2 TO 4
FEET BUILDING TO 4 TO 6 FEET TONIGHT. WAVES 5 TO 9 FEET BUILDING
TO 7 TO 10 FEET MONDAY.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...12120 11230
11240 13256 11236. SCATTERED RAIN SHOWERS AFTER MIDNIGHT TONIGHT.
WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET TONIGHT. WAVES 5 TO 9
FEET MONDAY.

SUPERIOR EAST...GALE WARNING IN EFFECT...11110 11120 11130 11140
11156 12256 11230. SCATTERED RAIN SHOWERS LATE. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET TONIGHT. WAVES 4 TO 7 FEET SUBSIDING TO 3
TO 6 FEET MONDAY.



RJT

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/MQT/GLFTABLE

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES