Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 251956
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
356 PM EDT MON MAY 25 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.7 INCH LOW PRESSURE SYSTEM CENTERED OVER
NORTHWESTERN WISCONSIN WILL MOVE OVER EASTERN LAKE SUPERIOR TONIGHT
AND WILL MAINTAIN A 29.8 INCH TROUGH OVER LAKE SUPERIOR TONIGHT INTO
WEDNESDAY. THIS TROUGH WILL WEAKEN TO 30.0 INCHES WEDNESDAY NIGHT
OVER LAKE SUPERIOR. A 29.8 INCH TROUGH OF LOW PRESSURE WILL DEVELOP
IN THE NORTHERN PLAINS THURSDAY MORNING AND WILL MOVE A 29.9 INCH
TROUGH OF LOW PRESSURE ACROSS LAKE SUPERIOR ON FRIDAY. A 30.3 INCH
HIGH PRESSURE CENTER WILL BUILD OVER THE UPPER GREAT LAKES ON
SATURDAY.

LSZ162-260400-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
356 PM EDT MON MAY 25 2015

.LATE THIS AFTERNOON...NORTHEAST WINDS 5 TO 15 KNOTS. AREAS OF
FOG. NUMEROUS RAIN SHOWERS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST LESS
THAN 10 KNOTS AFTER MIDNIGHT. AREAS OF FOG. SCATTERED RAIN
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...WEST WINDS LESS THAN 10 KNOTS VEERING NORTHEAST BY MID
AFTERNOON. AREAS OF FOG. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES
CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS LESS THAN 10 KNOTS BACKING WEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH MIDNIGHT.
AREAS OF FOG. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH
EARLY AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. SHOWERS LIKELY. WAVES CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-260400-
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-
356 PM EDT MON MAY 25 2015

.LATE THIS AFTERNOON...NORTHEAST WINDS 5 TO 15 KNOTS. AREAS OF
FOG. NUMEROUS RAIN SHOWERS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS BACKING WEST AFTER MIDNIGHT.
AREAS OF FOG. SCATTERED RAIN SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.TUESDAY...WEST WINDS LESS THAN 10 KNOTS VEERING NORTH BY MID
AFTERNOON. AREAS OF FOG. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES
CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS LESS THAN 10 KNOTS BACKING WEST
AFTER MIDNIGHT. AREAS OF FOG. A SLIGHT CHANCE OF RAIN SHOWERS.
WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH
EARLY AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. RAIN SHOWERS LIKELY. WAVES CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST. WAVES
CALM TO 2 FEET.

$$

LSZ264-260400-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
356 PM EDT MON MAY 25 2015

.LATE THIS AFTERNOON...NORTHEAST WINDS 5 TO 15 KNOTS. AREAS OF
FOG. NUMEROUS RAIN SHOWERS. WAVES 2 TO 4 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS BACKING WEST AFTER MIDNIGHT.
AREAS OF FOG. SCATTERED RAIN SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS BY MID AFTERNOON. AREAS OF FOG. A SLIGHT CHANCE OF RAIN
SHOWERS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A
SLIGHT CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH
EARLY AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING EAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. RAIN SHOWERS LIKELY. WAVES CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS BACKING WEST. WAVES CALM TO
2 FEET.

$$

LSZ265-260400-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
356 PM EDT MON MAY 25 2015

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

$$

LSZ266-260400-
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-
356 PM EDT MON MAY 25 2015

.LATE THIS AFTERNOON...SOUTH WINDS 5 TO 15 KNOTS. AREAS OF FOG.
SCATTERED RAIN SHOWERS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO
3 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS. AREAS OF FOG. ISOLATED RAIN
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES CALM TO
2 FEET.
.TUESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. AREAS OF FOG. A CHANCE OF RAIN SHOWERS. WAVES CALM TO
2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH EARLY
AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH. RAIN
SHOWERS LIKELY...THEN A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO
1 TO 3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ267-260400-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
356 PM EDT MON MAY 25 2015

.LATE THIS AFTERNOON...SOUTH WINDS 10 TO 20 KNOTS. AREAS OF FOG.
SCATTERED SHOWERS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. AREAS OF FOG. ISOLATED
RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING EAST LESS THAN
10 KNOTS BY MID AFTERNOON. AREAS OF FOG. A CHANCE OF RAIN SHOWERS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. AREAS OF FOG. A SLIGHT CHANCE OF THUNDERSTORMS THROUGH
MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A
SLIGHT CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS LESS THAN 10 KNOTS INCREASING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS BACKING NORTH. RAIN SHOWERS
LIKELY...THEN A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 1 TO
3 FEET.
.SATURDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ261-260400-
MAFOR 2521/
SUPERIOR WEST 11116 11103 11803 12703 12603 11703. SCATTERED
SHOWERS THIS EVENING. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL 11116 11813 12713 11613 13603. SCATTERED
SHOWERS THROUGH LATE EVENING. WAVES 1 TO 4 FEET.

SUPERIOR SOUTH CENTRAL 11513 14603 11603 11703 11803. SCATTERED
SHOWERS THIS EVENING. CHANCE OF SHOWERS LATE TUESDAY. WAVES CALM TO
3 FEET.

SUPERIOR EAST 11426 13513 12603 11503 11403. SCATTERED SHOWERS
THROUGH THIS EVENING. WAVES 1 TO 4 FEET.

$$

PETRO



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