Great Lakes Forecast
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000
FZUS63 KMQT 190751
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
351 AM EDT FRI MAY 19 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...30.3 INCH HIGH PRESSURE OVER SOUTHERN MANITOBA WILL
BUILD INTO NORTHERN ONTARIO TODAY AND INTO QUEBEC ON SATURDAY. A
29.7 INCH LOW PRESSURE DEVELOPING IN THE SOUTHERN PLAINS TODAY
WILL LIFT SLOWLY NORTH INTO THE UPPER MISSISSIPPI VALLEY ON
SATURDAY...NORTHERN ONTARIO ON SUNDAY AND INTO NORTHERN QUEBEC
MONDAY...LEAVING A 29.8 INCH LOW PRESSURE TROUGH OVER THE UPPER
GREAT LAKES. A 30.2 INCH RIDGE FROM NORTHWEST ONTARIO INTO THE
NORTHERN PLAINS WILL BUILD INTO THE NORTHERN GREAT LAKES TUESDAY.

LSZ162-191600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
351 AM EDT FRI MAY 19 2017 /251 AM CDT FRI MAY 19 2017/

.EARLY THIS MORNING...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
1 TO 3 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN THROUGH EARLY
AFTERNOON...THEN RAIN BY MID AFTERNOON. WAVES BUILDING TO 5 TO
8 FEET OCCASIONALLY TO 10 FEET.
.SATURDAY NIGHT...EAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN LIKELY. WAVES SUBSIDING TO 3 TO
5 FEET OCCASIONALLY TO 7 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN.
WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES CALM TO
2 FEET.
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-191600-
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-
351 AM EDT FRI MAY 19 2017

.EARLY THIS MORNING...NORTH WINDS LESS THAN 10 KNOTS. WAVES CALM
TO 2 FEET.
.TODAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN THROUGH EARLY
AFTERNOON...THEN RAIN LIKELY BY MID AFTERNOON. WAVES BUILDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.
.SATURDAY NIGHT...EAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN. WAVES SUBSIDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO 15 KNOTS.
A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ264-191600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
351 AM EDT FRI MAY 19 2017

.EARLY THIS MORNING...NORTH WINDS LESS THAN 10 KNOTS. WAVES CALM
TO 2 FEET.
.TODAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN BY MID AFTERNOON.
WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...EAST WINDS 20 TO 30 KNOTS. RAIN LIKELY. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS BY MID AFTERNOON. RAIN LIKELY THROUGH EARLY AFTERNOON...
THEN A CHANCE OF RAIN BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO
3 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.
WAVES 1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 1 TO 3 FEET.
.TUESDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.

$$

LSZ265-191600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
351 AM EDT FRI MAY 19 2017

.EARLY THIS MORNING...NORTH WINDS 5 TO 15 KNOTS. WAVES 1 TO
3 FEET SUBSIDING TO CALM TO 2 FEET.
.TODAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. RAIN LIKELY BY MID AFTERNOON. WAVES
BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...EAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN THROUGH MIDNIGHT...THEN A CHANCE OF
RAIN AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY
TO 9 FEET...THEN SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO
1 TO 3 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES SUBSIDING
TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.

$$

LSZ266-191600-
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-
351 AM EDT FRI MAY 19 2017

.EARLY THIS MORNING...NORTH WINDS 5 TO 15 KNOTS. WAVES 1 TO
3 FEET.
.TODAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING EAST AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN BY MID AFTERNOON.
WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...EAST WINDS 20 TO 30 KNOTS. RAIN. WAVES BUILDING
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH BY MID
AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES 1 TO
3 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 1 TO 3 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES 1 TO 3 FEET.

$$

LSZ267-191600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
351 AM EDT FRI MAY 19 2017

.EARLY THIS MORNING...NORTH WINDS 10 TO 20 KNOTS. WAVES 1 TO
3 FEET SUBSIDING TO CALM TO 2 FEET.
.TODAY...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO 20 KNOTS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 20 TO 30 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. RAIN. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS. RAIN LIKELY THROUGH
EARLY AFTERNOON...THEN A CHANCE OF RAIN BY MID AFTERNOON. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.
WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS. A CHANCE OF RAIN. WAVES BUILDING TO 1 TO 3 FEET.

$$

LSZ261-191600-
MAFOR 1909/
SUPERIOR WEST 11800 12200 13110 12210. WAVES 1 TO 2 FEET.

SUPERIOR NORTH CENTRAL 11800 12100 13700 11100 11210. WAVES 2
FEET OR LESS.

SUPERIOR SOUTH CENTRAL 12800 12100 12800 11100 11210. WAVES 1 TO
3 FEET TODAY. WAVES 1 FOOT OR LESS TONIGHT.

SUPERIOR EAST 11810 11110 11800 12710 11810 11110 11210. WAVES 1
TO 2 FEET.

$$

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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