Great Lakes Forecast
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FZUS63 KMQT 160759
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
359 AM EDT SUN APR 16 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...AS A 29.7 INCH LOW PRESSURE OVER THE UPPER GREAT LAKES
MOVES EASTWARD ACROSS SOUTHERN QUEBEC TODAY...AN ASSOCIATED 29.9
INCH TROUGH OVER THE UPPER MISSISSIPPI VALLEY WILL MOVE ACROSS THE
WESTERN GREAT LAKES. A 30.2 INCH RIDGE OVER THE NORTHERN PLAINS
MONDAY AFTERNOON WILL SHIFT TO THE EAST ON TUESDAY AS A 29.6 INCH
LOW DEVELOPS OVER MINNESOTA. THE LOW WILL CROSS UPPER MICHIGAN
AT 29.7 INCHES TUESDAY NIGHT AND EARLY WEDNESDAY MORNING WHILE A
30.4 INCH HIGH PRESSURE MOVES INTO NORTHERN ONTARIO. THE HIGH WILL
MOVE OVER QUEBEC ON THURSDAY AS A 29.6 INCH LOW PRESSURE MOVES
FROM THE CENTRAL PLAINS TO THE WESTERN GREAT LAKES.

LSZ162-161600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
359 AM EDT SUN APR 16 2017 /259 AM CDT SUN APR 16 2017/

.EARLY THIS MORNING...NORTHEAST WINDS 10 TO 20 KNOTS. PATCHY FOG.
A SLIGHT CHANCE OF RAIN SHOWERS AND DRIZZLE. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET.
.TODAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A SLIGHT
CHANCE OF DRIZZLE. A SLIGHT CHANCE OF RAIN SHOWERS BY MID
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF DRIZZLE. A
CHANCE OF RAIN AND SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING
TO CALM TO 2 FEET.
.MONDAY...EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF RAIN
SHOWERS THROUGH EARLY AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
SHOWERS...POSSIBLY MIXED WITH SNOW AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. RAIN SHOWERS LIKELY. WAVES BUILDING TO
2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS THROUGH
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW.
WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW.
WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.

$$

LSZ263-161600-
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-
359 AM EDT SUN APR 16 2017

.EARLY THIS MORNING...NORTHEAST WINDS 10 TO 20 KNOTS. PATCHY FOG.
A CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FEET.
.TODAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A
CHANCE OF RAIN SHOWERS THROUGH EARLY AFTERNOON. A CHANCE OF
DRIZZLE AND SNOW SHOWERS. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT. A CHANCE OF DRIZZLE AND SNOW SHOWERS. A CHANCE OF RAIN
SHOWERS...FREEZING RAIN AND FREEZING DRIZZLE AFTER MIDNIGHT.
WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN SHOWERS...
POSSIBLY MIXED WITH FREEZING RAIN AND SNOW SHOWERS THROUGH EARLY
AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES
CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. SNOW SHOWERS LIKELY
THROUGH EARLY AFTERNOON. RAIN SHOWERS LIKELY. WAVES BUILDING TO
2 TO 4 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS THROUGH MIDNIGHT. WAVES
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW.
WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET...THEN
SUBSIDING TO 2 TO 4 FEET.

$$

LSZ264-161600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
359 AM EDT SUN APR 16 2017

.EARLY THIS MORNING...NORTHEAST WINDS 15 TO 25 KNOTS. PATCHY FOG.
A CHANCE OF RAIN SHOWERS AND DRIZZLE. WAVES 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
.TODAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A
CHANCE OF RAIN SHOWERS THROUGH EARLY AFTERNOON. A CHANCE OF SNOW
SHOWERS. A SLIGHT CHANCE OF DRIZZLE BY MID AFTERNOON. WAVES
SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF DRIZZLE THROUGH
MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. A SLIGHT CHANCE OF
FREEZING DRIZZLE AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.MONDAY...EAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF RAIN
SHOWERS...FREEZING RAIN AND SNOW SHOWERS THROUGH EARLY AFTERNOON.
WAVES CALM TO 2 FEET.
.MONDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS...POSSIBLY
MIXED WITH SNOW THROUGH EARLY AFTERNOON...THEN RAIN SHOWERS BY
MID AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES
SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW.
WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET.

$$

LSZ265-161600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
359 AM EDT SUN APR 16 2017

.EARLY THIS MORNING...NORTHEAST WINDS 10 TO 20 KNOTS. PATCHY FOG.
A CHANCE OF RAIN SHOWERS. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET.
.TODAY...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH BY MID
AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A CHANCE OF RAIN
SHOWERS THROUGH EARLY AFTERNOON...THEN A SLIGHT CHANCE OF DRIZZLE
AND SNOW SHOWERS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS THROUGH MIDNIGHT. A
CHANCE OF DRIZZLE. A CHANCE OF FREEZING DRIZZLE AFTER MIDNIGHT.
WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS...
FREEZING RAIN AND SNOW SHOWERS THROUGH EARLY AFTERNOON. WAVES
CALM TO 2 FEET.
.MONDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS THROUGH EARLY
AFTERNOON...THEN RAIN SHOWERS LIKELY BY MID AFTERNOON. WAVES
BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING EAST 15 TO
25 KNOTS. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO
3 FEET.
.THURSDAY...NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF RAIN AND
SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET.

$$

LSZ266-161600-
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-
359 AM EDT SUN APR 16 2017

.EARLY THIS MORNING...NORTHEAST WINDS 15 TO 25 KNOTS. AREAS OF
FOG. A CHANCE OF DRIZZLE AND RAIN SHOWERS. WAVES 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
.TODAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A
CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW. A CHANCE OF
DRIZZLE BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF DRIZZLE AND SNOW SHOWERS. A SLIGHT
CHANCE OF FREEZING DRIZZLE AFTER MIDNIGHT. WAVES SUBSIDING TO
CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.MONDAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS...
FREEZING RAIN AND SNOW SHOWERS THROUGH EARLY AFTERNOON. WAVES
CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS...POSSIBLY
MIXED WITH SNOW THROUGH EARLY AFTERNOON...THEN RAIN SHOWERS
LIKELY BY MID AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
.TUESDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS VEERING NORTHWEST
AFTER MIDNIGHT. RAIN SHOWERS LIKELY THROUGH MIDNIGHT...THEN A
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO
4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING EAST 15 TO
25 KNOTS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF RAIN
SHOWERS...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.

$$

LSZ267-161600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
359 AM EDT SUN APR 16 2017

.EARLY THIS MORNING...NORTHEAST WINDS 10 TO 20 KNOTS. AREAS OF
FOG. A CHANCE OF DRIZZLE. WAVES 1 TO 3 FEET BUILDING TO 2 TO
4 FEET.
.TODAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A
CHANCE OF RAIN SHOWERS. A CHANCE OF SNOW SHOWERS BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF FREEZING DRIZZLE AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.MONDAY...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY THROUGH MIDNIGHT...
THEN A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO
CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF RAIN
SHOWERS...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.

$$

LSZ261-161600-
MAFOR 1609/
SUPERIOR WEST 12120 11220 14210 11210. PATCHY FOG THIS MORNING.
CHANCE OF RAIN SHOWERS EARLY THIS MORNING...THEN CHANCE OF RAIN
SHOWERS AND DRIZZLE THROUGH MID MORNING. CHANCE OF DRIZZLE
TONIGHT. WAVES 2 TO 4 FEET.


SUPERIOR NORTH CENTRAL 13130 12110 13120. PATCHY FOG THIS
MORNING. CHANCE OF RAIN AND SNOW SHOWERS THROUGH EARLY EVENING
TONIGHT. WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 3 FEET TODAY. WAVES 2
TO 3 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL 11123 11120 11820 12810 12800 11810.
PATCHY FOG THIS MORNING. CHANCE OF RAIN SHOWERS THIS MORNING.
CHANCE OF DRIZZLE LATE TONIGHT. WAVES 2 TO 4 FEET TODAY. WAVES 1
TO 3 FEET TONIGHT.

SUPERIOR EAST 11133 12130 11827 11820 11810 12110. PATCHY FOG
THIS MORNING. CHANCE OF DRIZZLE AND RAIN SHOWERS THROUGH MID
MORNING. CHANCE OF RAIN SHOWERS TODAY. CHANCE OF RAIN AND SNOW
SHOWERS THROUGH EARLY EVENING TONIGHT. WAVES 2 TO 4 FEET BUILDING
TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 3 FEET TODAY. WAVES 1 TO
2 FEET TONIGHT.

$$

VOSS



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