Great Lakes Forecast
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000
FZUS63 KMQT 261404
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1004 AM EDT WED APR 26 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 29.4 INCH LOW PRESSURE SYSTEM OVER WISCONSIN WILL
LIFT TO EASTERN LAKE SUPERIOR BY THIS EVENING AS ANOTHER LOW
PRESSURE SYSTEM OF 29.3 INCHES ORGANIZES OVER THE MIDDLE
MISSISSIPI RIVER VALLEY. THIS LOW WILL LIFT NORTHWARD ACROSS UPPER
MICHIGAN AND LAKE SUPERIOR ON THURSDAY WHILE DEEPENING TO 29.3
INCHES. THIS LOW WILL HEAD NORTH TO JAMES BAY BY FRIDAY MORNING. A
30.0 INCH RIDGE WILL BUILD OVER THE UPPER GREAT LAKES ON FRIDAY.
THE RIDGE WILL BUILD TO 30.3 INCHES OVER THE UPPER GREAT LAKES ON
SATURDAY.

LSZ162-262215-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1004 AM EDT WED APR 26 2017 /904 AM CDT WED APR 26 2017/

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.REST OF TODAY...NORTHEAST GALES TO 45 KNOTS. RAIN SHOWERS...
POSSIBLY MIXED WITH FREEZING RAIN. A SLIGHT CHANCE OF SLEET BY
MID AFTERNOON. WAVES 11 TO 15 FEET OCCASIONALLY TO 19 FEET
BUILDING TO 12 TO 17 FEET OCCASIONALLY TO 21 FEET...THEN
SUBSIDING TO 9 TO 12 FEET OCCASIONALLY TO 15 FEET.
.TONIGHT...NORTHEAST WINDS 20 TO 30 KNOTS BECOMING NORTH 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF FREEZING RAIN. A SLIGHT
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. RAIN...FREEZING RAIN...SLEET AND SNOW IN THE MORNING.
A CHANCE OF RAIN AND SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING
TO 1 TO 3 FEET.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN AND
SNOW SHOWERS. WAVES 1 TO 3 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF RAIN SHOWERS...THEN RAIN AND SNOW SHOWERS
LIKELY. WAVES BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.

$$

LSZ263-262215-
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-
1004 AM EDT WED APR 26 2017

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NORTHEAST GALES TO 45 KNOTS. A CHANCE OF SLEET
BY LATE MORNING. RAIN SHOWERS...POSSIBLY MIXED WITH FREEZING
RAIN. WAVES 11 TO 15 FEET OCCASIONALLY TO 19 FEET BUILDING TO
12 TO 17 FEET OCCASIONALLY TO 21 FEET...THEN SUBSIDING TO 10 TO
14 FEET OCCASIONALLY TO 18 FEET.
.TONIGHT...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN...FREEZING RAIN...SLEET AND SNOW.
WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS BY MID AFTERNOON. RAIN...FREEZING RAIN...SLEET AND SNOW
IN THE MORNING. A CHANCE OF RAIN AND SNOW SHOWERS IN THE AFTERNOON.
WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES
1 TO 3 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS. A
CHANCE OF RAIN SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO CALM
TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST. WAVES
BUILDING TO 1 TO 3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS. A CHANCE OF RAIN SHOWERS...THEN RAIN SHOWERS...POSSIBLY
MIXED WITH SNOW. WAVES BUILDING TO 6 TO 9 FEET OCCASIONALLY TO
11 FEET.

$$

LSZ264-262215-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1004 AM EDT WED APR 26 2017

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...NORTHEAST GALES TO 45 KNOTS. FREEZING RAIN BY
LATE MORNING. RAIN SHOWERS. A SLIGHT CHANCE OF FREEZING RAIN BY
MID AFTERNOON. WAVES 11 TO 15 FEET OCCASIONALLY TO 19 FEET
BUILDING TO 12 TO 17 FEET OCCASIONALLY TO 21 FEET...THEN
SUBSIDING TO 10 TO 14 FEET OCCASIONALLY TO 18 FEET.
.TONIGHT...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 20 TO
30 KNOTS AFTER MIDNIGHT. RAIN AND FREEZING RAIN LIKELY. WAVES
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. RAIN...FREEZING RAIN...SLEET AND SNOW IN THE MORNING.
A CHANCE OF RAIN AND SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING
TO 2 TO 4 FEET.
.THURSDAY NIGHT...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN
SHOWERS BY MID AFTERNOON. WAVES 1 TO 3 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS VEERING EAST. WAVES
BUILDING TO 1 TO 3 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS. RAIN SHOWERS...POSSIBLY MIXED WITH SNOW SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.

$$

LSZ265-262215-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1004 AM EDT WED APR 26 2017

.REST OF TODAY...EAST WINDS 20 TO 30 KNOTS WITH A FEW GALE FORCE
GUSTS TO 35 KNOTS BECOMING NORTHEAST 20 TO 30 KNOTS BY MID
AFTERNOON. RAIN SHOWERS. WAVES 7 TO 10 FEET OCCASIONALLY TO 13
FEET BUILDING TO 9 TO 12 FEET OCCASIONALLY TO 15 FEET...THEN
SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST AFTER
MIDNIGHT. RAIN SHOWERS LIKELY. WAVES SUBSIDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS BY MID AFTERNOON. RAIN SHOWERS LIKELY THROUGH EARLY
AFTERNOON WITH A CHANCE OF FREEZING RAIN...THEN A CHANCE OF
RAIN...SLEET AND AND SNOW. WAVES SUBSIDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN
SHOWERS...POSSIBLY MIXED WITH SNOW. WAVES SUBSIDING TO 1 TO 3
FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS. WAVES 1 TO 3 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES
BUILDING TO 1 TO 3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS. A CHANCE OF RAIN AND SNOW SHOWERS...THEN RAIN SHOWERS...
POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.

$$

LSZ266-262215-
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-
1004 AM EDT WED APR 26 2017

.REST OF TODAY...EAST WINDS 20 TO 30 KNOTS WITH A FEW GALE FORCE
GUSTS TO 35 KNOTS. RAIN SHOWERS. WAVES 10 TO 14 FEET OCCASIONALLY
TO 18 FEET SUBSIDING TO 9 TO 12 FEET OCCASIONALLY TO 15 FEET.
.TONIGHT...EAST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN SHOWERS. WAVES SUBSIDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS BY MID AFTERNOON. RAIN SHOWERS LIKELY...THEN A CHANCE OF
FREEZING RAIN AND SNOW BY MID AFTERNOON. WAVES SUBSIDING TO 2 TO
4 FEET.
.THURSDAY NIGHT...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS...POSSIBLY
MIXED WITH SNOW. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7
FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN AND SNOW
SHOWERS. WAVES 2 TO 4 FEET.
.FRIDAY NIGHT...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING EAST. WAVES
BUILDING TO 1 TO 3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW...
THEN RAIN SHOWERS...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.

$$

LSZ267-262215-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1004 AM EDT WED APR 26 2017

.REST OF TODAY...EAST WINDS 20 TO 30 KNOTS WITH A FEW GALE FORCE
GUSTS TO 35 KNOTS BECOMING SOUTHEAST 20 TO 30 KNOTS BY MID
AFTERNOON. A CHANCE OF RAIN SHOWERS BY LATE MORNING...THEN RAIN
SHOWERS LIKELY BY MID AFTERNOON. WAVES 5 TO 8 FEET OCCASIONALLY TO
10 FEET SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
.TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS. RAIN SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST
20 TO 30 KNOTS BY MID AFTERNOON. RAIN SHOWERS LIKELY. WAVES
BUILDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. A SLIGHT
CHANCE OF SNOW AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
.FRIDAY...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN THROUGH EARLY AFTERNOON.
WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING EAST 10 TO
20 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS.
A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW...THEN RAIN
SHOWERS...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.

$$
LSZ261-262215-
MAFOR 2615/
SUPERIOR WEST...GALE WARNING IN EFFECT...12166 13150 13830.
CHANCE OF LIGHT FREEZING RAIN AND RAIN SHOWERS THROUGH EARLY
EVENING...THEN CHANCE OF LIGHT FREEZING RAIN FROM LATE EVENING ON
TONIGHT. CHANCE OF SNOW SHOWERS LATE THURSDAY MORNING. WAVES 12
TO 16 FEET THIS AFTERNOON. WAVES 10 TO 13 FEET SUBSIDING TO 5 TO
9 FEET TONIGHT. WAVES 3 TO 6 FEET THURSDAY MORNING.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...12166 13156
13846. CHANCE OF LIGHT FREEZING RAIN THIS AFTERNOON. CHANCE OF
LIGHT FREEZING RAIN LATE THURSDAY MORNING. WAVES 11 TO 15 FEET
THIS AFTERNOON. WAVES 10 TO 14 FEET SUBSIDING TO 6 TO 10 FEET
TONIGHT. WAVES 5 TO 7 FEET SUBSIDING TO 3 TO 5 FEET THURSDAY
MORNING.

SUPERIOR SOUTH CENTRAL 11246 19256 11246 11826 13726 11736 11726.
CHANCE OF RAIN SHOWERS THROUGH EARLY EVENING TONIGHT. WAVES 8 TO
12 FEET THIS AFTERNOON. WAVES 5 TO 9 FEET SUBSIDING TO 4 TO 6
FEET TONIGHT. WAVES 3 TO 5 FEET THURSDAY MORNING.

SUPERIOR EAST 11246 19256 11246 11246 12336 11326 11626 11326.
WAVES 7 TO 11 FEET THIS AFTERNOON. WAVES 5 TO 8 FEET SUBSIDING TO
2 TO 4 FEET TONIGHT. WAVES 2 TO 3 FEET THURSDAY MORNING.

$$

TITUS

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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