Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 230153
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
953 PM EDT WED MAR 22 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...30.6 INCH HIGH PRESSURE CENTERED NEAR DETROIT LATE
THIS EVENING WILL DRIFT TO THE EAST COAST THROUGH THURSDAY AS A
29.5 INCH LOW PRESSURE ORGANIZES OVER THE WESTERN PLAINS. ON
FRIDAY AFTERNOON...THIS LOW WILL MOVE INTO THE CENTRAL PLAINS AS
30.5 INCH HIGH PRESSURE BUILDS OVER NORTHERN ONTARIO. THE HIGH
WILL BUILD TO 30.7 INCHES OVER JAMES BAY SATURDAY AFTERNOON AS THE
LOW WEAKENS TO 29.7 INCHES OVER NORTHERN ILLINOIS. HIGH PRESSURE
WILL LIFT EAST OF HUDSON BAY ON SUNDAY WHILE THE LOW OVER ILLINOIS
FURTHER WEAKENS. A 30.1 INCH RIDGE WILL BUILD OVER THE UPPER
GREAT LAKES MONDAY.

LSZ162-231000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
953 PM EDT WED MAR 22 2017 /853 PM CDT WED MAR 22 2017/

.REST OF TONIGHT...EAST WINDS 10 TO 20 KNOTS VEERING SOUTH AFTER
MIDNIGHT. A CHANCE OF SNOW SHOWERS...POSSIBLY MIXED WITH
RAIN...AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 1 TO 3
FEET.
.THURSDAY...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS...POSSIBLY
MIXED WITH SNOW. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING
TO CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. RAIN. WAVES CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST BY MID
AFTERNOON. A SLIGHT CHANCE OF RAIN SOUTH. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET.
.SATURDAY...NORTHEAST WINDS 20 TO 30 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES 3 TO 6 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN...
POSSIBLY MIXED WITH FREEZING RAIN. A CHANCE OF SLEET AFTER
MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS. RAIN LIKELY. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH. A CHANCE
OF RAIN. WAVES CALM TO 2 FEET.

$$

LSZ263-231000-
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-
953 PM EDT WED MAR 22 2017

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN AND SNOW
SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 2 TO 4
FEET.
.THURSDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN
SHOWERS...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. RAIN...POSSIBLY MIXED WITH SNOW.
WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SOUTH. WAVES
CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 6 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS. WAVES 3 TO 6 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. A CHANCE OF SLEET
AFTER MIDNIGHT. WAVES 3 TO 5 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST. A CHANCE OF
RAIN AND SNOW. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN. WAVES CALM
TO 2 FEET.

$$

LSZ264-231000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
953 PM EDT WED MAR 22 2017

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SNOW SHOWERS LATE. WAVES CALM TO 2 FEET BUILDING TO 2 TO 4 FEET.
.THURSDAY...SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. ISOLATED SNOW SHOWERS IN THE MORNING.
SCATTERED RAIN AND SNOW SHOWERS BY MID AFTERNOON. WAVES BUILDING
TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.THURSDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. RAIN...POSSIBLY MIXED WITH SNOW.
WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. WAVES 3 TO 5 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN.
WAVES 3 TO 6 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS.
A CHANCE OF RAIN AND SNOW. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN. WAVES CALM
TO 2 FEET.

$$

LSZ265-231000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
953 PM EDT WED MAR 22 2017

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 1 TO 3 FEET.
.THURSDAY...SOUTH WINDS 15 TO 25 KNOTS. SCATTERED SNOW SHOWERS
POSSIBLY MIXED WITH RAIN BY MID AFTERNOON. WAVES BUILDING TO 3 TO
5 FEET.
.THURSDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. RAIN...POSSIBLY MIXED WITH SNOW. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO 20 KNOTS
BY MID AFTERNOON. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 6 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS. WAVES 3 TO 5 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN. A
CHANCE OF FREEZING RAIN AND SLEET AFTER MIDNIGHT. WAVES 3 TO
5 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. A CHANCE
OF SNOW SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ266-231000-
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-
953 PM EDT WED MAR 22 2017

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 3
TO 5 FEET.
.THURSDAY...SOUTH WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO
35 KNOTS IN THE AFTERNOON. SCATTERED SNOW SHOWERS POSSIBLY MIXED
WITH RAIN BY MID AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET.
.THURSDAY NIGHT...SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A FEW GALE FORCE GUSTS TO 35 KNOTS IN THE
EVENING. RAIN...POSSIBLY MIXED WITH SNOW. WAVES SUBSIDING TO 1 TO
3 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO
CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 6 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS. WAVES 3 TO 5 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN...
POSSIBLY MIXED WITH SNOW. A CHANCE OF FREEZING RAIN AND SLEET
AFTER MIDNIGHT. WAVES 3 TO 6 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN...FREEZING
RAIN AND SLEET. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES
CALM TO 2 FEET.

$$

LSZ267-231000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
953 PM EDT WED MAR 22 2017

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 2
TO 4 FEET.
.THURSDAY...SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS WITH A FEW GALE FORCE GUSTS TO 35 KNOTS BY MID
AFTERNOON. SCATTERED SNOW SHOWERS POSSIBLY MIXED WITH RAIN BY MID
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...SOUTH WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A FEW GALE FORCE GUSTS TO 35 KNOTS IN THE
EVENING. RAIN. SNOW LIKELY THROUGH MIDNIGHT. A CHANCE OF SNOW
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH BY MID
AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
2 TO 4 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 1 TO
3 FEET.
.SATURDAY NIGHT...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW. A
CHANCE OF SLEET AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN...FREEZING
RAIN AND SLEET. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN...THEN
SNOW SHOWERS...POSSIBLY MIXED WITH RAIN. WAVES CALM TO 2 FEET.

$$
LSZ261-231000-
MAFOR 2303/
SUPERIOR WEST 11320 11420 13430 11420 11410 11416. SCATTERED SNOW
SHOWERS OVERNIGHT INTO THURSDAY MORNING. CHANCE OF RAIN SHOWERS
LATE THURSDAY AFTERNOON. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 13420 11430 12440 11430 11436. SCATTERED
RAIN AND SNOW SHOWERS THURSDAY AFTERNOON. WAVES 1 TO 4 FEET
OVERNIGHT BUILDING TO 3 TO 6 FEET THURSDAY AND THURSDAY EVENING.

SUPERIOR SOUTH CENTRAL 12420 11430 14440 11447. SCATTERED SNOW
SHOWERS EARLY THURSDAY AFTERNOON. WAVES 1 TO 3 FEET OVERNIGHT
BUILDING TO 3 TO 5 FEET THURSDAY AND THURSDAY EVENING.

SUPERIOR EAST 12420 11430 14440 11447. SCATTERED SNOW SHOWERS
THURSDAY AFTERNOON. WAVES 1 TO 4 FEET OVERNIGHT BUILDING TO 3 TO
7 FEET THURSDAY AND THURSDAY EVENING.

$$

KLUBER



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