Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 280225
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1025 PM EDT SAT AUG 27 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...AN AREA OF LOW PRESSURE MEASURING 30.0 INCHES EXTENDING
FROM WESTERN LAKE SUPERIOR INTO LAKE HURON WILL LIFT NORTHEAST INTO
SOUTHERN QUEBEC OVERNIGHT AND SUNDAY AS HIGH PRESSURE OF 30.1 INCHES
BUILDS OVER THE UPPER GREAT LAKES. THE HIGH WILL EXPAND ACROSS THE
GREAT LAKES REGION AND STRENGTHEN SLIGHTLY TO 30.2 INCHES ON MONDAY
BEFORE SHIFTING TO NEW ENGLAND ON TUESDAY. AT THE SAME TIME...A 29.7
INCH LOW PRESSURE TRACKING THROUGH MANITOBA INTO ONTARIO WILL PUSH A
WEAK 29.9 INCH TROUGH AND ASSOCIATED COLD FRONT ACROSS THE UPPER
GREAT LAKES MONDAY NIGHT AND THE LOWER GREAT LAKES TUESDAY NIGHT. A
30.2 INCH RIDGE WILL THEN BUILD SOUTHEASTWARD FROM NORTHERN ONTARIO
ON WEDNESDAY...REMAINING OVER THE UPPER GREAT LAKES THROUGH THE END
OF THE WEEK.

LSZ162-281030-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1025 PM EDT SAT AUG 27 2016 /925 PM CDT SAT AUG 27 2016/

.REST OF TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING WEST
AFTER MIDNIGHT. PATCHY FOG. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS DIMINISHING OVERNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...EAST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT.
WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-281030-
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-
1025 PM EDT SAT AUG 27 2016

.REST OF TONIGHT...EAST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. PATCHY FOG. NUMEROUS SHOWERS THROUGH MIDNIGHT...THE
ISOLATED RAIN SHOWERS. ISOLATED THUNDERSTORMS THROUGH MIDNIGHT.
WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES CALM TO
2 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS VEERING EAST. WAVES CALM
TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ264-281030-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1025 PM EDT SAT AUG 27 2016

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST
AFTER MIDNIGHT. PATCHY FOG. NUMEROUS SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS DIMINISHING LATE. WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT.
WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ265-281030-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1025 PM EDT SAT AUG 27 2016

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING
SOUTHWEST AFTER MIDNIGHT. PATCHY FOG. SCATTERED SHOWERS DIMINISHING
LATE. WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. A
CHANCE OF THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST.
WAVES CALM TO 2 FEET.

$$

LSZ266-281030-
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-
1025 PM EDT SAT AUG 27 2016

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING WEST
LESS THAN 10 KNOTS AFTER MIDNIGHT. PATCHY FOG. SCATTERED SHOWERS
DIMINISHING LATE. A SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH EARLY
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS LESS THAN 10 KNOTS INCREASING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST. WAVES
CALM TO 2 FEET.

$$

LSZ267-281030-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1025 PM EDT SAT AUG 27 2016

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

$$

LSZ261-281030-
MAFOR 2803/
SUPERIOR WEST 11100 12700 11600 12500 12300. PATCHY FOG THROUGH MID
MORNING SUNDAY. SCATTERED SHOWERS WITH ISOLATED THUNDERSTORMS.
WAVES 2 FEET OR LESS.

SUPERIOR NORTH CENTRAL 11316 11306 11100 11700 11600 11610 11500
11400. PATCHY FOG OVERNIGHT THROUGH LATE SUNDAY MORNING. CHANCE OF
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS LATE OVERNIGHT. WAVES 2
FEET OR LESS.

SUPERIOR SOUTH CENTRAL 11310 11400 11500 11610 12600 12300.
PATCHY FOG THROUGH MID MORNING SUNDAY. ISOLATED SHOWERS LATE THIS
EVENING. WAVES 2 FEET OR LESS.

SUPERIOR EAST 11210 11800 11603 11600 11700 13600. PATCHY FOG
OVERNIGHT THROUGH LATE SUNDAY MORNING. SCATTERED SHOWERS OVERNIGHT.
WAVES 1 FOOT OR LESS.

$$

RJT


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