Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 180200
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1000 PM EDT FRI MAR 17 2017

.SYNOPSIS...A 29.6 INCH LOW PRESSURE OVER NORTHWEST LAKE SUPERIOR
LATE THIS EVENING WILL TRACK SOUTHEASTWARD TO THE LOWER GREAT
LAKES BY SATURDAY AFTERNOON. A 30.4 INCH RIDGE WILL THEN MOVE
EASTWARD ACROSS THE UPPER GREAT LAKES SATURDAY NIGHT AND THE LOWER
GREAT LAKES ON 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 LATE SUNDAY NIGHT INTO MONDAY MORNING. IN ITS
WAKE...A 30.3 INCH RIDGE WILL BUILD SOUTHEASTWARD ACROSS THE
NORTHERN PLAINS BY MONDAY NIGHT...AND EVENTUALLY DRIFT EASTWARD
ACROSS THE UPPER GREAT LAKES AT 30.5 INCHES ON WEDNESDAY.

LSZ162-181000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1000 PM EDT FRI MAR 17 2017 /900 PM CDT FRI MAR 17 2017/

.REST OF TONIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AND
DRIZZLE...ENDING LATE. WAVES CALM TO 2 FEET BUILDING TO 3 TO 5
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 BACKING SOUTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. 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.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-181000-
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-
1000 PM EDT FRI MAR 17 2017

.REST OF TONIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. A
CHANCE OF SNOW AND A SLIGHT CHANCE OF DRIZZLE. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW THROUGH EARLY
AFTERNOON. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. WAVES SUBSIDING TO 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. WAVES 1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. WAVES 2 TO 4 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ264-181000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1000 PM EDT FRI MAR 17 2017

.REST OF TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING NORTH 10 TO
20 KNOTS AFTER MIDNIGHT. PATCHY FOG. A SLIGHT CHANCE OF DRIZZLE.
A CHANCE OF SNOW. WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 4 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO 2 TO
4 FEET.
.SATURDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING EAST 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. WAVES SUBSIDING TO 1 TO
3 FEET...THEN BUILDING TO 3 TO 5 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. FREEZING SPRAY
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTH. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING
TO 1 TO 3 FEET.

$$

LSZ265-181000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1000 PM EDT FRI MAR 17 2017

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF SNOW. A
SLIGHT CHANCE OF DRIZZLE OR FREEZING DRIZZLE. WAVES 2 TO 4 FEET
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF DRIZZLE THROUGH EARLY
AFTERNOON. A CHANCE OF SNOW. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. 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. WAVES SUBSIDING TO 1 TO
3 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.MONDAY NIGHT...WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING
TO 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH 15 TO
25 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS...THEN SNOW
SHOWERS LIKELY. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS VEERING SOUTH. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-181000-
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-
1000 PM EDT FRI MAR 17 2017

.REST OF TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS BY MIDNIGHT. SNOW LIKELY THROUGH MIDNIGHT...THEN A
CHANCE OF SNOW. A SLIGHT CHANCE OF DRIZZLE. PATCHY FOG AFTER
MIDNIGHT. WAVES 3 TO 5 FEET SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF DRIZZLE AND
SNOW. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO
4 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS
THROUGH MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 20 TO 30 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. A CHANCE OF RAIN SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS. WAVES BUILDING TO 3 TO
6 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS VEERING NORTH. FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. SNOW SHOWERS LIKELY. WAVES
BUILDING TO 5 TO 8 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.

$$

LSZ267-181000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1000 PM EDT FRI MAR 17 2017

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

$$
LSZ261-181000-
MAFOR 1803/
SUPERIOR WEST 11620 11730 12740 11730 11710 11600 11500. WAVES 1
TO 5 FEET.

SUPERIOR NORTH CENTRAL 11420 11600 11830 11840 12830 12820.
PATCHY FOG TONIGHT. CHANCE OF SNOW OVERNIGHT AND SATURDAY
MORNING. WAVES 2 TO 6 FEET.

SUPERIOR SOUTH CENTRAL 11417 11500 11710 11720 12730 12720.
PATCHY FOG TONIGHT. CHANCE OF SNOW INTO SATURDAY AFTERNOON.
CHANCE OF DRIZZLE LATE THIS EVENING AND SATURDAY MORNING. WAVES 1
TO 4 FEET.

SUPERIOR EAST 11337 11327 11310 11200 11100 11810 11720 11710.
CHANCE OF SNOW OVERNIGHT AND SATURDAY. CHANCE OF DRIZZLE
SATURDAY. WAVES 1 TO 4 FEET.

$$

KLUBER



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