Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 241952
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
352 PM EDT TUE MAY 24 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.9 INCH LOW PRESSURE TROUGH ACROSS LAKE SUPERIOR THIS
AFTERNOON WILL DRIFT SOUTH THIS EVENING AS A 30.2 INCH HIGH PRESSURE
BUILDING INTO NORTHWEST ONTARIO MOVES TO HUDSON BAY. EXPECT THIS
HIGH TO MOVE INTO NORTHERN QUEBEC ON WEDNESDAY WHILE A 29.7 INCH LOW
PRESSURE DEVELOPS OVER THE NORTHERN PLAINS. THIS LOW WILL DRIFT
SLOWLY NORTHEAST INTO ONTARIO ON THURSDAY. YET ANOTHER 29.6 INCH LOW
WILL TAKE SHAPE IN THE CENTRAL PLAINS ON FRIDAY AND DRIFT TOWARD THE
UPPER MISSISSIPPI RIVER VALLEY ON SATURDAY...EXTENDING A LOW PRESSURE
TROUGH AVERAGING 29.9 INCHES INTO THE UPPER LAKES WHICH REMAINS OVER
ONTARIO INTO SUNDAY.

LSZ162-250400-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
352 PM EDT TUE MAY 24 2016 /252 PM CDT TUE MAY 24 2016/

.LATE THIS AFTERNOON...NORTHEAST WINDS 10 TO 20 KNOTS. WIDESPREAD
FOG. ISOLATED SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. ISOLATED SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT. WIDESPREAD FOG. WAVES CALM TO
2 FEET.
.WEDNESDAY...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. WIDESPREAD FOG THROUGH EARLY
AFTERNOON...THEN PATCHY FOG BY MID AFTERNOON. SCATTERED SHOWERS
AND THUNDERSTORMS BY MID AFTERNOON. WAVES BUILDING TO 3 TO
5 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY THROUGH MIDNIGHT...THEN
A CHANCE OF SHOWERS. A CHANCE OF THUNDERSTORMS. PATCHY FOG AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS VEERING EAST BY MID AFTERNOON.
AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES CALM TO
2 FEET.
.SATURDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST. RAIN
SHOWERS LIKELY. WAVES CALM TO 2 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTH. A CHANCE OF
SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ263-250400-
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-
352 PM EDT TUE MAY 24 2016

.LATE THIS AFTERNOON...NORTHEAST WINDS 5 TO 15 KNOTS. WIDESPREAD
FOG. ISOLATED SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT. ISOLATED SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT.
WIDESPREAD FOG. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. WIDESPREAD FOG THROUGH EARLY
AFTERNOON...THEN AREAS OF FOG BY MID AFTERNOON. SCATTERED SHOWERS
AND THUNDERSTORMS BY MID AFTERNOON. WAVES BUILDING TO 2 TO
4 FEET.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. PATCHY
FOG AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A CHANCE
OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. RAIN SHOWERS LIKELY. WAVES
CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH. A CHANCE
OF RAIN SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ264-250400-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
352 PM EDT TUE MAY 24 2016

.LATE THIS AFTERNOON...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG.
ISOLATED SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS. ISOLATED SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT. AREAS OF FOG THROUGH MIDNIGHT...
THEN WIDESPREAD FOG AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WIDESPREAD FOG. ISOLATED SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A CHANCE
OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. A CHANCE
OF RAIN SHOWERS...THEN RAIN SHOWERS LIKELY. WAVES BUILDING TO
1 TO 3 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.

$$

LSZ265-250400-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
352 PM EDT TUE MAY 24 2016

.LATE THIS AFTERNOON...NORTHEAST WINDS 5 TO 15 KNOTS. AREAS OF
FOG. ISOLATED SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. ISOLATED SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT. AREAS OF FOG THROUGH MIDNIGHT...
THEN WIDESPREAD FOG AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS. WIDESPREAD FOG THROUGH
EARLY AFTERNOON...THEN AREAS OF FOG BY MID AFTERNOON. ISOLATED
SHOWERS AND THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN
SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES
CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES CALM TO
2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. AREAS OF FOG. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A CHANCE
OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. RAIN SHOWERS LIKELY. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. A CHANCE
OF SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ266-250400-
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-
352 PM EDT TUE MAY 24 2016

.LATE THIS AFTERNOON...NORTHEAST WINDS 5 TO 15 KNOTS. AREAS OF
FOG. SCATTERED SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. ISOLATED SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT. AREAS OF FOG THROUGH MIDNIGHT...
THEN WIDESPREAD FOG AFTER MIDNIGHT. WAVES BUILDING TO 1 TO
3 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS. WIDESPREAD FOG. ISOLATED
SHOWERS AND THUNDERSTORMS BY MID AFTERNOON. WAVES SUBSIDING TO
CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN
SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A
CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. A CHANCE
OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ267-250400-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
352 PM EDT TUE MAY 24 2016

.LATE THIS AFTERNOON...NORTHEAST WINDS 5 TO 15 KNOTS. SCATTERED
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT. SCATTERED SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT.
AREAS OF FOG THROUGH MIDNIGHT...THEN WIDESPREAD FOG AFTER
MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTHEAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. WAVES
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS THROUGH
MIDNIGHT...THEN SHOWERS LIKELY AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. AREAS OF FOG. RAIN SHOWERS LIKELY
THROUGH EARLY AFTERNOON. A CHANCE OF THUNDERSTORMS. A CHANCE OF
RAIN SHOWERS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. RAIN
SHOWERS LIKELY. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. A CHANCE
OF SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ261-250400-
MAFOR 2421/
SUPERIOR WEST 14113 11223 13123. WAVES 1 TO 5 FEET.

SUPERIOR NORTH CENTRAL 11213 12103 12203 13213. WAVES 1 TO 2 FEET.

SUPERIOR SOUTH CENTRAL 14103 11103 11203 12213. SCATTERED SHOWERS
AND THUNDERSTORMS THIS EVENING. WAVES 2 FEET OR LESS.

SUPERIOR EAST 11100 11103 13113 12110 11103. PATCHY FOG THIS
EVENING AND WEDNESDAY. SCATTERED SHOWERS AND THUNDERSTORMS THIS
EVENING. WAVES 1 TO 3 FEET.

$$

07



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