Great Lakes Forecast
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000
FZUS63 KMQT 172003
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
403 PM EDT MON APR 17 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...A 30.4 INCH RIDGE FROM NORTHERN QUEBEC TO NORTHERN MN
WILL MOVE OVER THE EASTERN GREAT LAKES TUESDAY MORNING AS A 29.5
INCH LOW MOVES OVER MINNESOTA. THE LOW WILL CROSS LAKE SUPERIOR AT
29.7 INCHES TUESDAY NIGHT WHILE A 30.4 INCH HIGH PRESSURE MOVES INTO
NORTHERN ONTARIO. THE HIGH WILL MOVE OVER QUEBEC ON THURSDAY AS A
29.7 INCH LOW PRESSURE MOVES FROM THE CENTRAL PLAINS TO LOWER
MICHIGAN. THE LOW WILL MOVE OFF THE EAST COAST FRIDAY AFTERNOON AS A
30.4 INCH RIDGE MOVES OVER THE NORTHERN GREAT LAKES. THE RIDGE WILL
LINGER OVER THE NORTHERN GREAT LAKES THROUGH SATURDAY.

LSZ162-180415-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
403 PM EDT MON APR 17 2017 /303 PM CDT MON APR 17 2017/

.LATE THIS AFTERNOON...EAST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET BUILDING TO 1 TO 3 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. SCATTERED RAIN SHOWERS...POSSIBLY MIXED WITH
SLEET AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET...THEN
BUILDING TO 1 TO 3 FEET.
.TUESDAY...EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST 20 TO
30 KNOTS IN THE AFTERNOON...THEN BECOMING WEST 15 TO 25 KNOTS
LATE. RAIN SHOWERS...POSSIBLY MIXED WITH SLEET THROUGH EARLY
AFTERNOON...THEN SCATTERED RAIN SHOWERS AND ISOLATED
THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS
THROUGH MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES BUILDING
TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. WAVES CALM
TO 2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-180415-
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-
403 PM EDT MON APR 17 2017

.LATE THIS AFTERNOON...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT...THEN INCREASING TO 10 TO 20 KNOTS LATE. ISOLATED RAIN
SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON...THEN VEERING SOUTH LATE. RAIN
SHOWERS...POSSIBLY MIXED WITH SLEET THROUGH EARLY AFTERNOON...
THEN SCATTERED RAIN SHOWERS. WAVES BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET...THEN SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH MIDNIGHT.
WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES BUILDING
TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
2 TO 4 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST LESS
THAN 10 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ264-180415-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
403 PM EDT MON APR 17 2017

...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY
EVENING...

.LATE THIS AFTERNOON...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS LATE. WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
40 KNOTS IN THE AFTERNOON. SCATTERED RAIN SHOWERS...POSSIBLY
MIXED WITH SLEET AND SNOW SHOWERS THROUGH EARLY AFTERNOON...THEN
NUMEROUS RAIN SHOWERS. WAVES BUILDING TO 5 TO 9 FEET OCCASIONALLY
TO 11 FEET.
.TUESDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT...THEN INCREASING TO 15 TO 25 KNOTS
LATE. GALE FORCE GUSTS TO 35 KNOTS EARLY IN THE EVENING. A CHANCE
OF RAIN SHOWERS THROUGH MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST
AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
2 TO 4 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING
TO 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING WEST LESS THAN
10 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
BUILDING TO 1 TO 3 FEET.

$$

LSZ265-180415-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
403 PM EDT MON APR 17 2017

...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY
EVENING...

.LATE THIS AFTERNOON...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT...THEN INCREASING TO 15 TO 25 KNOTS LATE. WAVES CALM TO
2 FEET.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. SCATTERED RAIN SHOWERS THROUGH EARLY
AFTERNOON...THEN NUMEROUS RAIN SHOWERS. WAVES BUILDING TO 4 TO 7
FEET OCCASIONALLY TO 9 FEET...THEN SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
.TUESDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT...THEN VEERING NORTHWEST LATE. GALE FORCE GUSTS TO 35
KNOTS EARLY IN THE EVENING. A CHANCE OF RAIN SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 6 FEET OCCASIONALLY TO 8 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO 2 TO 4 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS BACKING WEST. WAVES SUBSIDING
TO CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-180415-
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-
403 PM EDT MON APR 17 2017

...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY
EVENING...

.LATE THIS AFTERNOON...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...NORTHEAST WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT...THEN INCREASING TO 10 TO 20 KNOTS
LATE. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO GALES TO
40 KNOTS IN THE AFTERNOON. SCATTERED RAIN SHOWERS THROUGH EARLY
AFTERNOON...THEN NUMEROUS RAIN SHOWERS. WAVES BUILDING TO 5 TO 9
FEET OCCASIONALLY TO 11 FEET.
.TUESDAY NIGHT...SOUTH GALES TO 35 KNOTS BECOMING WEST 15 TO
25 KNOTS AFTER MIDNIGHT...THEN BECOMING NORTHWEST 20 TO 30 KNOTS
LATE. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AFTER MIDNIGHT.
WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 6 FEET OCCASIONALLY TO 8 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ267-180415-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
403 PM EDT MON APR 17 2017

...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY
EVENING...

.LATE THIS AFTERNOON...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5
TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT...THEN BECOMING SOUTHEAST 10 TO 20 KNOTS LATE. WAVES
CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. ISOLATED RAIN SHOWERS THROUGH EARLY
AFTERNOON...THEN NUMEROUS RAIN SHOWERS. WAVES BUILDING TO 4 TO 7
FEET OCCASIONALLY TO 9 FEET.
.TUESDAY NIGHT...SOUTHEAST GALES TO 35 KNOTS BECOMING SOUTH 20 TO
30 KNOTS AFTER MIDNIGHT...THEN BECOMING WEST 15 TO 25 KNOTS LATE.
RAIN SHOWERS LIKELY THROUGH MIDNIGHT...THEN A SLIGHT CHANCE OF
RAIN SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.THURSDAY...NORTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN AND
SNOW. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING
TO 2 TO 4 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES CALM
TO 2 FEET.

$$

LSZ261-180415-
MAFOR 1721/
SUPERIOR WEST 13210 12220 11226 11346 11446. SCATTERED RAIN
SHOWERS LATE TONIGHT THROUGH MID MORNING TUESDAY. WAVES 1 TO 4
FEET.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11200 11300
11310 12320 11330 11346 11356. SCATTERED RAIN SHOWERS LATE
TUESDAY MORNING. WAVES 2 FEET OR LESS TONIGHT BUILDING TO 5 TO 9
FEET TUESDAY.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11100 11200
11310 12320 12330 11356. WAVES 1 TO 2 FEET TONIGHT BUILDING TO 3
TO 5 FEET TUESDAY.

SUPERIOR EAST...GALE WARNING IN EFFECT...11810 11800 11100 12310
11320 11340 11346 19356. SCATTERED RAIN SHOWERS EARLY TUESDAY
AFTERNOON. WAVES 1 FOOT OR LESS TONIGHT BUILDING TO 4 TO 7 FEET
TUESDAY.

$$

KLUBER

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

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



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