Great Lakes Forecast
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000
FZUS63 KMQT 170758
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
358 AM EDT FRI MAR 17 2017

.SYNOPSIS...A 29.6 INCH LOW PRESSURE SYSTEM OVER SOUTHERN MANITOBA
WILL TRACK EAST...REACHING NORTHERN ONTARIO TODAY. AS THIS LOW
SLIDES SOUTHEAST ACROSS THE GREAT LAKES REGION TONIGHT AND
SATURDAY MORNING AND THEN OFF THE EAST COAST LATE SATURDAY...A
30.4 INCH HIGH PRESSURE WILL BUILD INTO NORTHERN ONTARIO AND WILL
EXTEND A RIDGE TO THE MID MISSISSIPPI RIVER VALLEY. EXPECT THIS
RIDGE TO SLIDE TO THE EAST AND STRETCH FROM QUEBEC TO THE GULF
COAST BY LATE SUNDAY. A 29.0 INCH LOW PRESSURE OVER NORTHERN
MANITOBA SUNDAY MORNING WILL THEN TRACK EAST...CROSSING HUDSON BAY
SUNDAY NIGHT AND MONDAY WHILE DRAGGING A COLD FRONT ACROSS THE
UPPER GREAT LAKES ON SUNDAY NIGHT. IN ITS WAKE...HIGH PRESSURE OF
30.5 INCHES BUILDING SOUTHEAST INTO SASKATCHEWAN ON MONDAY WILL
MOVE TO MANITOBA ON TUESDAY WITH A RIDGE EXTENDING INTO THE UPPER
MISSISSIPPI VALLEY.

LSZ162-171600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
358 AM EDT FRI MAR 17 2017 /258 AM CDT FRI MAR 17 2017/

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS. SNOW...
POSSIBLY MIXED WITH RAIN...DRIZZLE AND FREEZING RAIN. WAVES CALM
TO 2 FEET.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. SNOW...POSSIBLY MIXED WITH RAIN THROUGH EARLY
AFTERNOON...THEN AREAS OF DRIZZLE...POSSIBLY MIXED WITH RAIN AND
SNOW BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW AND AREAS OF DRIZZLE.
WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW THROUGH EARLY
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.SUNDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST. WAVES
BUILDING TO 2 TO 4 FEET.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ263-171600-
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-
358 AM EDT FRI MAR 17 2017

.EARLY THIS MORNING...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF
SNOW...POSSIBLY MIXED WITH RAIN AND DRIZZLE. WAVES 1 TO 3 FEET.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF FREEZING
RAIN THROUGH EARLY AFTERNOON. SNOW...POSSIBLY MIXED WITH RAIN.
AREAS OF DRIZZLE BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW AND AREAS OF DRIZZLE.
WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF DRIZZLE...FREEZING
DRIZZLE AND SNOW THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO CALM
TO 2 FEET.
.SATURDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES 1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES
BUILDING TO 3 TO 5 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES
SUBSIDING TO CALM TO 2 FEET.

$$

LSZ264-171600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
358 AM EDT FRI MAR 17 2017

.EARLY THIS MORNING...SOUTH WINDS 5 TO 15 KNOTS. WAVES 1 TO
3 FEET BUILDING TO 2 TO 4 FEET.
.TODAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW THROUGH
EARLY AFTERNOON...THEN SNOW...POSSIBLY MIXED WITH RAIN BY MID
AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO
6 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. SNOW LIKELY AND AREAS OF DRIZZLE THROUGH MIDNIGHT...
THEN A CHANCE OF SNOW AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO
3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF DRIZZLE AND SNOW THROUGH
EARLY AFTERNOON. A CHANCE OF FREEZING DRIZZLE. WAVES BUILDING TO
2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET.
.SUNDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. A CHANCE OF
SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A CHANCE
OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ265-171600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
358 AM EDT FRI MAR 17 2017

.EARLY THIS MORNING...SOUTH WINDS 10 TO 20 KNOTS. WAVES 1 TO
3 FEET BUILDING TO 2 TO 4 FEET.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS. SNOW. WAVES BUILDING TO
3 TO 6 FEET.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF DRIZZLE
THROUGH EARLY AFTERNOON. A CHANCE OF FREEZING DRIZZLE. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS. A CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
6 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 6 FEET.

$$

LSZ266-171600-
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-
358 AM EDT FRI MAR 17 2017

.EARLY THIS MORNING...SOUTH WINDS 15 TO 25 KNOTS. WAVES 1 TO
3 FEET BUILDING TO 2 TO 4 FEET.
.TODAY...SOUTH WINDS 15 TO 25 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. A SLIGHT CHANCE OF SNOW THROUGH EARLY AFTERNOON...THEN
SNOW LIKELY...POSSIBLY MIXED WITH RAIN BY MID AFTERNOON. WAVES
BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. SNOW LIKELY THROUGH MIDNIGHT...THEN A
CHANCE OF SNOW AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW THROUGH
EARLY AFTERNOON. A CHANCE OF DRIZZLE. A SLIGHT CHANCE OF FREEZING
DRIZZLE BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET.
.SUNDAY NIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY THROUGH
MIDNIGHT...THEN A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES
SUBSIDING TO 2 TO 4 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST. FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO 7 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 5 TO 8 FEET...THEN
SUBSIDING TO 3 TO 5 FEET.

$$

LSZ267-171600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
358 AM EDT FRI MAR 17 2017

.EARLY THIS MORNING...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET BUILDING TO 1 TO 3 FEET.
.TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW...POSSIBLY MIXED WITH
RAIN AND DRIZZLE BY MID AFTERNOON. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. SNOW. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTH BY MID
AFTERNOON. A SLIGHT CHANCE OF FREEZING DRIZZLE THROUGH EARLY
AFTERNOON. A CHANCE OF SNOW AND DRIZZLE. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF FREEZING RAIN THROUGH
MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY THROUGH
MIDNIGHT...THEN A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS. A CHANCE OF SNOW SHOWERS. FREEZING SPRAY. WAVES
SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 4 TO 7 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS VEERING NORTH. FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.

$$

LSZ261-171600-
MAFOR 1709/
SUPERIOR WEST 12327 11427 11416 11515 11625 11620 11730. AREAS OF
DRIZZLE EARLY THIS MORNING. CHANCE OF SNOW...IN WITH AREAS OF
DRIZZLE LATE TODAY. CHANCE OF SNOW...AREAS OF DRIZZLE WITH A
CHANCE OF RAIN THROUGH EARLY EVENING...THEN CHANCE OF SNOW WITH
AREAS OF DRIZZLE LATE THIS EVENING. WAVES 1 TO 3 FEET.

SUPERIOR NORTH CENTRAL 11420 11430 11440 11347 11337 11427 11410
11600. CHANCE OF SNOW EARLY THIS AFTERNOON. CHANCE OF SNOW AFTER
MIDNIGHT TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 4 TO 7 FEET
TODAY. WAVES 3 TO 6 FEET SUBSIDING TO 2 TO 4 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL 11420 12330 12337 11320 11410 11500.
CHANCE OF SNOW FROM LATE EVENING ON TONIGHT. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET TODAY.
WAVES 1 TO 4 FEET TONIGHT.

SUPERIOR EAST 12420 12330 13337 11327. CHANCE OF SNOW AND RAIN
LATE TODAY. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET TODAY.
WAVES 2 TO 5 FEET TONIGHT.

$$

TITUS



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