Great Lakes Forecast
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FZUS63 KMQT 210759
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
359 AM EDT TUE APR 21 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...29.1 INCH LOW PRESSURE OVER CENTRAL ONTARIO WILL MOVE TO
JAMES BAY BY THIS EVENING. THIS LOW WILL THEN REMAIN NEARLY
STATIONARY AND SLOWLY WEAKEN THROUGH WEDNESDAY...WHILE SWEEPING A
SERIES OF 29.6 INCH TROUGHS ACROSS THE UPPER GREAT LAKES. THE LOW
WILL SHIFT EAST WEDNESDAY NIGHT...REACHING MAINE AT 29.3 INCHES BY
THURSDAY MORNING. MEANWHILE...A 30.3 INCH HIGH OVER NORTHERN CANADA
WILL PUSH A 30.1 INCH RIDGE SOUTH INTO THE NORTHERN PLAINS ON
THURSDAY BEFORE SHIFTING EAST ACROSS THE UPPER GREAT LAKES FRIDAY
THROUGH SATURDAY.

LSZ162-211600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
359 AM EDT TUE APR 21 2015

.EARLY THIS MORNING...WEST WINDS 15 TO 25 KNOTS. SCATTERED SNOW
SHOWERS...POSSIBLY MIXED WITH RAIN. WAVES 2 TO 4 FEET.
.TODAY...NORTHWEST WINDS 15 TO 25 KNOTS. ISOLATED RAIN AND SNOW
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. ISOLATED RAIN SHOWERS THROUGH MIDNIGHT.
ISOLATED SNOW SHOWERS. WAVES BUILDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-211600-
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 TUE APR 21 2015

.EARLY THIS MORNING...WEST WINDS 15 TO 25 KNOTS. SCATTERED SNOW
SHOWERS...POSSIBLY MIXED WITH RAIN. WAVES 3 TO 6 FEET SUBSIDING
TO 3 TO 5 FEET.
.TODAY...NORTHWEST WINDS 15 TO 25 KNOTS. SCATTERED SNOW SHOWERS...
POSSIBLY MIXED WITH RAIN. WAVES SUBSIDING TO 1 TO 3 FEET...THEN
BUILDING TO 2 TO 4 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. ISOLATED RAIN SHOWERS
THROUGH MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES BUILDING TO 3 TO
6 FEET.
.WEDNESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES 2 TO 4 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT AND FRIDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST. WAVES
CALM TO 2 FEET.

$$

LSZ264-211600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
359 AM EDT TUE APR 21 2015

.EARLY THIS MORNING...WEST WINDS 15 TO 25 KNOTS. SCATTERED SNOW
SHOWERS...POSSIBLY MIXED WITH RAIN. WAVES 3 TO 5 FEET SUBSIDING
TO 2 TO 4 FEET.
.TODAY...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. SCATTERED SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 3 TO 5 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. SCATTERED SNOW SHOWERS.
WAVES BUILDING TO 4 TO 7 FEET.
.WEDNESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO
3 TO 5 FEET.
.THURSDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH. WAVES CALM
TO 2 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
CALM TO 2 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

$$

LSZ265-211600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
359 AM EDT TUE APR 21 2015

.EARLY THIS MORNING...WEST WINDS 10 TO 20 KNOTS. SCATTERED SNOW
SHOWERS...POSSIBLY MIXED WITH RAIN. WAVES 2 TO 4 FEET SUBSIDING
TO 1 TO 3 FEET.
.TODAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS BY MID AFTERNOON. SCATTERED SNOW SHOWERS. ISOLATED RAIN
SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. SCATTERED SNOW SHOWERS
THROUGH MIDNIGHT...THEN NUMEROUS SNOW SHOWERS AFTER MIDNIGHT.
WAVES BUILDING TO 3 TO 6 FEET.
.WEDNESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. SNOW SHOWERS LIKELY.
WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. SNOW SHOWERS
LIKELY THROUGH MIDNIGHT...THEN A CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO 3 TO
5 FEET.
.THURSDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
CALM TO 2 FEET.

$$

LSZ266-211600-
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 TUE APR 21 2015

.EARLY THIS MORNING...SOUTHWEST WINDS 10 TO 20 KNOTS. SCATTERED
SNOW SHOWERS...POSSIBLY MIXED WITH RAIN. WAVES 3 TO 5 FEET.
.TODAY...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST BY MID
AFTERNOON. SCATTERED SNOW SHOWERS. ISOLATED RAIN SHOWERS BY MID
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 3 TO
5 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. ISOLATED RAIN SHOWERS
THROUGH MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES BUILDING TO 5 TO
8 FEET.
.WEDNESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS THROUGH EARLY AFTERNOON...THEN SNOW SHOWERS LIKELY BY MID
AFTERNOON. WAVES SUBSIDING TO 4 TO 7 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF
SNOW SHOWERS THROUGH MIDNIGHT...THEN SNOW SHOWERS LIKELY AFTER
MIDNIGHT. WAVES SUBSIDING TO 3 TO 6 FEET...THEN BUILDING TO 4 TO
7 FEET.
.THURSDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY THROUGH SATURDAY...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES
CALM TO 2 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

$$

LSZ267-211600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
359 AM EDT TUE APR 21 2015

.EARLY THIS MORNING...SOUTHWEST WINDS 10 TO 20 KNOTS. SCATTERED
SNOW SHOWERS...POSSIBLY MIXED WITH RAIN. WAVES 3 TO 5 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. SCATTERED SNOW SHOWERS...POSSIBLY MIXED WITH RAIN.
WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.TONIGHT...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET.
.WEDNESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS THROUGH EARLY AFTERNOON...THEN SNOW SHOWERS LIKELY BY MID
AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. SNOW SHOWERS LIKELY THROUGH EARLY
AFTERNOON...THEN A CHANCE OF SNOW SHOWERS BY MID AFTERNOON. WAVES
SUBSIDING TO 2 TO 4 FEET...THEN BUILDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

$$

LSZ261-211600-
MAFOR 2109/
SUPERIOR WEST 11630 15730 11730. SCATTERED SNOW SHOWERS WITH
ISOLATED RAIN SHOWERS THIS MORNING. SCATTERED SNOW SHOWERS WITH
ISOLATED RAIN SHOWERS AFTER MIDNIGHT. WAVES 2 TO 5 FEET.

SUPERIOR NORTH CENTRAL 11620 12720 11730 14740. SCATTERED SNOW
SHOWERS WITH ISOLATED RAIN SHOWERS EARLY THIS MORNING...THEN
SCATTERED SNOW SHOWERS TODAY. SCATTERED SNOW SHOWERS AFTER
MIDNIGHT TONIGHT. WAVES 2 TO 5 FEET TODAY. WAVES 3 TO 6 FEET
BUILDING TO 5 TO 7 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL 12620 11610 12720 11730 12747. SCATTERED
SNOW SHOWERS WITH ISOLATED RAIN SHOWERS EARLY THIS MORNING...THEN
SCATTERED SNOW SHOWERS THIS MORNING. SCATTERED SNOW SHOWERS WITH
ISOLATED RAIN SHOWERS THIS AFTERNOON. ISOLATED RAIN SHOWERS AFTER
MIDNIGHT TONIGHT. WAVES 1 TO 4 FEET TODAY. WAVES 2 TO 3 FEET
BUILDING TO 4 TO 7 FEET TONIGHT.

SUPERIOR EAST 11530 11520 12620 11630 11730 12740. SCATTERED SNOW
SHOWERS WITH ISOLATED RAIN SHOWERS EARLY THIS MORNING...THEN
SCATTERED SNOW SHOWERS TODAY. SCATTERED SNOW SHOWERS AFTER
MIDNIGHT TONIGHT. WAVES 1 TO 5 FEET TODAY. WAVES 3 TO 6 FEET
BUILDING TO 4 TO 7 FEET TONIGHT.

$$

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