Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 170759
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
359 AM EDT THU APR 17 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...LOW PRESSURE OF 29.9 INCHES OVER CENTRAL WISCONSIN WILL
CROSS UPPER MICHIGAN TODAY AND REACH NORTHERN ONTARIO FRIDAY MORNING
WHILE WEAKENING TO 30.2 INCHES. MEANWHILE...HIGH PRESSURE OF 30.4
INCHES WILL MOVE FROM THE LOWER GREAT LAKES INTO THE NEW ENGLAND
STATES... STRENGTHENING TO 30.8 INCHES. FRIDAY AFTERNOON ANOTHER HIGH
PRESSURE SYSTEM OF 30.4 INCHES OVER MANITOBA WILL MOVE EASTWARD INTO
JAMES BAY...EXPANDING A 30.3 INCH RIDGE OVER THE GREAT LAKES THROUGH
SATURDAY NIGHT. LOW PRESSURE OF 29.9 INCHES OVER MANITOBA ON SUNDAY
WILL CROSS INTO QUEBEC BY MONDAY...AND A LOW PRESSURE TROUGH
AVERAGING 30.0 INCHES WILL DROP ACROSS THE GREAT LAKES.

LSZ162-171600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
359 AM EDT THU APR 17 2014 /259 AM CDT THU APR 17 2014/

...GALE WARNING IN EFFECT UNTIL 6 AM EDT /5 AM CDT/ EARLY THIS
MORNING...

.EARLY THIS MORNING...EAST GALES TO 35 KNOTS DIMINISHING TO
20 TO 30 KNOTS. SNOW. WAVES 6 TO 10 FEET.
.TODAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. A CHANCE OF SNOW. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. SNOW LIKELY THROUGH EARLY
AFTERNOON. RAIN LIKELY. WAVES BUILDING TO 3 TO 5 FEET...THEN
SUBSIDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING NORTH LESS
THAN 10 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES SUBSIDING
TO CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

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

$$

LSZ263-264-171600-
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-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
359 AM EDT THU APR 17 2014

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

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

$$

LSZ265-171600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
359 AM EDT THU APR 17 2014

.EARLY THIS MORNING...EAST WINDS 20 TO 30 KNOTS. SNOW.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. SNOW.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST
AFTER MIDNIGHT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW...POSSIBLY MIXED WITH
RAIN THROUGH EARLY AFTERNOON...THEN RAIN LIKELY BY MID AFTERNOON.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. RAIN LIKELY THROUGH MIDNIGHT...THEN A CHANCE OF
RAIN AFTER MIDNIGHT.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO 20 KNOTS.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

LSZ266-267-171600-
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-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
359 AM EDT THU APR 17 2014

.EARLY THIS MORNING...EAST WINDS 20 TO 30 KNOTS. SNOW LIKELY.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. SNOW LIKELY THROUGH EARLY AFTERNOON...
THEN A CHANCE OF SNOW...POSSIBLY MIXED WITH RAIN SHOWERS BY MID
AFTERNOON.
.TONIGHT...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW. RAIN LIKELY BY MID
AFTERNOON.
.SATURDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS. RAIN.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING WEST.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

LSZ261-171600-
MAFOR 1709/
SUPERIOR WEST...GALE WARNING IN EFFECT...
11257 11247 11230 11120 11810 12700 11710. SLIGHT CHANCE OF SNOW
THIS AFTERNOON. WAVES 6 TO 9 FEET SUBSIDING TO 3 TO 5 FEET TODAY.
WAVES 1 TO 3 FEET SUBSIDING TO 1 FOOT OR LESS TONIGHT.

SUPERIOR NORTH CENTRAL 13247 11347 11320 11310 11610 11720. CHANCE
OF SNOW AND FREEZING DRIZZLE THIS EVENING. WAVES 2 TO 4 FEET BUILDING
TO 3 TO 5 FEET TODAY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET
TONIGHT.

SUPERIOR SOUTH CENTRAL 11247 11347 12337 11410 11400 11520 11620.
CHANCE OF SNOW THIS EVENING. WAVES OMITTED FOR MOSTLY ICE COVERED
AREAS.

SUPERIOR EAST 12347 12340 11330 11320 11510 11610. SLIGHT CHANCE OF
SNOW THIS AFTERNOON. SLIGHT CHANCE OF RAIN AND SNOW THIS EVENING.
WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

JLA





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