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 SUN MAY 17 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...LOW PRESSURE OF 29.6 INCHES OVER THE NORTHERN PLAINS
WILL MOVE NORTHEAST TO THE MINNESOTA ARROWHEAD TONIGHT. THE LOW WILL
CONTINUE TO MOVE NORTHEAST...WITH THE ASSOCIATED COLD FRONT SWEEPING
ACROSS LAKE SUPERIOR MONDAY. BEHIND THE COLD FRONT...HIGH PRESSURE
OVER 30.4 INCHES WILL BUILD ACROSS THE NORTHERN PLAINS AND UPPER
MISSISSIPPI VALLEY TUESDAY...THEN ACROSS THE GREAT LAKES WEDNESDAY.
A WEAK TROUGH OF LOW PRESSURE AVERAGING 30.2 INCHES WILL PASS ACROSS
LAKE SUPERIOR FROM THE NORTH THURSDAY INTO THURSDAY NIGHT.

LSZ162-171600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
359 AM EDT SUN MAY 17 2015

.EARLY THIS MORNING...NORTHEAST WINDS 15 TO 25 KNOTS. WIDESPREAD
FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET.
.TODAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH EARLY AFTERNOON. SHOWERS AND THUNDERSTORMS
LIKELY BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WIDESPREAD FOG THROUGH MIDNIGHT. PATCHY FOG AFTER
MIDNIGHT. THUNDERSTORMS LIKELY THROUGH MIDNIGHT. A CHANCE OF RAIN
SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
RAIN SHOWERS THROUGH MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
WAVES 2 TO 4 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST. WAVES
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-
359 AM EDT SUN MAY 17 2015

.EARLY THIS MORNING...EAST WINDS 10 TO 20 KNOTS. WIDESPREAD FOG.
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.TODAY...EAST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING SOUTH 10 TO
20 KNOTS AFTER MIDNIGHT. WIDESPREAD FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A CHANCE OF RAIN
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO
4 FEET.
.MONDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS THROUGH
MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
6 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING WEST BY MID
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST. WAVES
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-
359 AM EDT SUN MAY 17 2015

.EARLY THIS MORNING...SOUTHEAST WINDS 10 TO 20 KNOTS. AREAS OF
FOG. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO
3 FEET.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. AREAS OF FOG THROUGH EARLY AFTERNOON.
WIDESPREAD FOG BY MID AFTERNOON. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 3 TO 6 FEET.
.TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING SOUTH 10 TO
20 KNOTS AFTER MIDNIGHT. WIDESPREAD FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A CHANCE OF RAIN
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30
KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS THROUGH MIDNIGHT. A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 5 TO 8 FEET.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ265-171600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
359 AM EDT SUN MAY 17 2015

.EARLY THIS MORNING...SOUTHEAST WINDS 10 TO 20 KNOTS. AREAS OF
FOG. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES 1 TO 3 FEET.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS. AREAS OF FOG THROUGH
EARLY AFTERNOON. WIDESPREAD FOG BY MID AFTERNOON. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 3 TO 5 FEET.
.TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WIDESPREAD FOG THROUGH MIDNIGHT. AREAS OF FOG AFTER
MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO 1 TO 3 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG. A SLIGHT CHANCE OF RAIN
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS.
WAVES BUILDING TO 4 TO 7 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH. WAVES CALM TO
2 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-
359 AM EDT SUN MAY 17 2015

.EARLY THIS MORNING...SOUTHEAST WINDS 10 TO 20 KNOTS. PATCHY FOG.
A SLIGHT CHANCE OF RAIN SHOWERS. WAVES 1 TO 3 FEET.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH 15 TO
25 KNOTS AFTER MIDNIGHT. WIDESPREAD FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. AREAS OF FOG. A SLIGHT CHANCE OF RAIN
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS...
POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 5 TO 8 FEET.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 3 TO
6 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH. WAVES CALM TO
2 FEET.

$$

LSZ267-171600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
359 AM EDT SUN MAY 17 2015

.EARLY THIS MORNING...SOUTHEAST WINDS 15 TO 25 KNOTS. WIDESPREAD
FOG. WAVES CALM TO 2 FEET.
.TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH 15 TO
25 KNOTS AFTER MIDNIGHT. WIDESPREAD FOG. THUNDERSTORMS LIKELY
THROUGH MIDNIGHT. A CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. AREAS OF FOG. A SLIGHT CHANCE OF RAIN
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. A SLIGHT
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO
5 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH. WAVES CALM TO
2 FEET.

$$

LSZ261-171600-
MAFOR 1709/
SUPERIOR WEST 13233 11236 11239 11329 11339 11433. CHANCE OF RAIN
SHOWERS AND THUNDERSTORMS TODAY. CHANCE OF SHOWERS AND THUNDERSTORMS
LATE TONIGHT. WAVES 2 TO 4 FEET.

SUPERIOR NORTH CENTRAL 11323 12333 13343 12333. CHANCE OF RAIN
SHOWERS AND THUNDERSTORMS TODAY AND TONIGHT. WAVES 2 TO 4 FEET
BUILDING TO 3 TO 5 FEET TODAY. WAVES 3 TO 6 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL 11320 12333 13343 11333 11443. CHANCE OF
SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND TONIGHT. WAVES 1 TO 3
FEET BUILDING TO 2 TO 4 FEET TODAY. WAVES 3 TO 5 FEET TONIGHT.

SUPERIOR EAST 13333 12343 11349 11343 11433. CHANCE OF SHOWERS
AND THUNDERSTORMS THIS AFTERNOON AND TONIGHT. WAVES 2 TO 4 FEET
BUILDING TO 3 TO 5 FEET TODAY. WAVES 3 TO 5 FEET TONIGHT.

$$

VOSS


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