Great Lakes Forecast
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313
FZUS63 KMQT 211059 AAB
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR...UPDATED
NATIONAL WEATHER SERVICE MARQUETTE MI
659 AM EDT THU JUL 21 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...HIGH PRESSURE OF 30.3 INCHES ACROSS THE MID ATLANTIC
STATES WILL MOVE TO THE SOUTHEAST UNITED STATES THROUGH FRIDAY. A LOW
PRESSURE TROUGH OF 29.7 INCHES FROM NORTHERN MANITOBA TO THE NORTHERN
HIGH PLAINS WILL DRIFT EASTWARD...CROSSING THE UPPER GREAT LAKES THIS
EVENING AND QUEBEC AND NEW ENGLAND ON FRIDAY. A WEAK 30.0 INCH RIDGE
WILL THEN BUILD OVER THE UPPER GREAT LAKES ON FRIDAY AND THEN SLIDE
ACROSS THE LOWER GREAT LAKES ON SATURDAY AS A 29.7 INCH TROUGH OF LOW
PRESSURE MOVES IN FROM THE DAKOTAS SATURDAY NIGHT INTO SUNDAY. THIS
TROUGH WILL CROSS THE UPPER GREAT LAKES ON MONDAY AS A HIGH PRESSURE
RIDGE OF 30.0 INCHES MOVES FROM THE NORTHERN PLAINS TO THE UPPER
MISSISSIPPI RIVER VALLEY.

LSZ162-211900-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
659 AM EDT THU JUL 21 2016 /559 AM CDT THU JUL 21 2016/

.EARLY THIS MORNING...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG.
SCATTERED SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS BY MID AFTERNOON. SCATTERED SHOWERS AND THUNDERSTORMS
THROUGH EARLY AFTERNOON. PATCHY FOG. WAVES BUILDING TO 1 TO
3 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG AFTER MIDNIGHT.
WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. WAVES CALM TO
2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS
THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS
AND THUNDERSTORMS THROUGH MIDNIGHT...THEN SHOWERS AND
THUNDERSTORMS LIKELY AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS.
PATCHY FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-211900-
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-
659 AM EDT THU JUL 21 2016

...SEVERE THUNDERSTORM WATCH 404 IN EFFECT UNTIL NOON EDT TODAY...

.EARLY THIS MORNING...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG.
A CHANCE OF SHOWERS AND THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE WITH WIND GUSTS OVER 35 KNOTS AND LARGE HAIL. WAVES CALM
TO 2 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. PATCHY FOG. SCATTERED SHOWERS AND THUNDERSTORMS. WAVES
BUILDING TO 2 TO 4 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG AFTER MIDNIGHT.
WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. WAVES
BUILDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST LESS
THAN 10 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH
MIDNIGHT...THEN SHOWERS AND THUNDERSTORMS LIKELY AFTER MIDNIGHT.
PATCHY FOG AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 1 TO 3 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ264-211900-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
659 AM EDT THU JUL 21 2016

...SEVERE THUNDERSTORM WATCH 404 IN EFFECT UNTIL NOON EDT TODAY...

.EARLY THIS MORNING...SOUTHWEST WINDS 10 TO 20 KNOTS. PATCHY FOG.
A CHANCE OF SHOWERS AND THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE WITH WIND GUSTS OVER 35 KNOTS AND LARGE HAIL. WAVES CALM
TO 2 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS. PATCHY FOG. SCATTERED
SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS. PATCHY FOG AFTER MIDNIGHT.
WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS. PATCHY FOG THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. PATCHY FOG
AFTER MIDNIGHT. SHOWERS AND THUNDERSTORMS LIKELY AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING WEST. PATCHY FOG.
A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-211900-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
659 AM EDT THU JUL 21 2016

...SEVERE THUNDERSTORM WATCH 404 IN EFFECT UNTIL NOON EDT TODAY...

.EARLY THIS MORNING...SOUTHWEST WINDS 10 TO 20 KNOTS. SCATTERED
SHOWERS AND THUNDERSTORMS. SOME THUNDERSTORMS MAY BE SEVERE WITH
WIND GUSTS OVER 35 KNOTS AND LARGE HAIL. WAVES CALM TO 2 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. SCATTERED SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH EARLY
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. SHOWERS AND
THUNDERSTORMS LIKELY AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-211900-
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-
659 AM EDT THU JUL 21 2016

...SEVERE THUNDERSTORM WATCH 404 IN EFFECT UNTIL NOON EDT TODAY...

.EARLY THIS MORNING...SOUTH WINDS 10 TO 20 KNOTS. PATCHY FOG.
ISOLATED SHOWERS AND THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE WITH WIND GUSTS OVER 35 KNOTS AND LARGE HAIL. WAVES 1 TO
3 FEET.
.TODAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG. SCATTERED SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. ISOLATED SHOWERS AND THUNDERSTORMS THROUGH
MIDNIGHT. PATCHY FOG. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SATURDAY...NORTH WINDS LESS THAN 10 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING WEST. PATCHY
FOG. SHOWERS AND THUNDERSTORMS LIKELY. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.

$$

LSZ267-211900-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
659 AM EDT THU JUL 21 2016

...SEVERE THUNDERSTORM WATCH 404 IN EFFECT UNTIL NOON EDT TODAY...

.EARLY THIS MORNING...SOUTHWEST WINDS 10 TO 20 KNOTS. PATCHY FOG.
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. SOME THUNDERSTORMS
MAY BE SEVERE WITH WIND GUSTS OVER 35 KNOTS AND LARGE HAIL. WAVES
1 TO 3 FEET.
.TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS. PATCHY FOG. SCATTERED
SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS. ISOLATED SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. WAVES CALM
TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING WEST. PATCHY
FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO
1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.

$$
LSZ261-211900-
MAFOR 2112 AMD/
SUPERIOR WEST...SEVERE THUNDERSTORM WATCH IN EFFECT...13513 12613
11603 11600. SCATTERED SHOWERS AND THUNDERSTORMS THROUGH MID
MORNING...THEN SCATTERED SHOWERS WITH ISOLATED THUNDERSTORMS LATE
THIS MORNING. PATCHY FOG OVERNIGHT. WAVES 1 TO 3 FEET.

SUPERIOR NORTH CENTRAL...SEVERE THUNDERSTORM WATCH IN EFFECT...
12513 11523 11623 11620 12610. SCATTERED SHOWERS AND
THUNDERSTORMS THROUGH MID MORNING. PATCHY FOG FROM LATE EVENING
ON TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET TODAY.
WAVES 2 TO 4 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL...SEVERE THUNDERSTORM WATCH IN EFFECT...
13510 12610 11600 11610. PATCHY FOG LATE THIS MORNING. SCATTERED
SHOWERS AND THUNDERSTORMS LATE THIS MORNING. PATCHY FOG FROM LATE
EVENING ON TONIGHT. WAVES 1 TO 2 FEET.

SUPERIOR EAST...SEVERE THUNDERSTORM WATCH IN EFFECT...11510 13513
11613 11603 11600. PATCHY FOG THROUGH MID MORNING. SCATTERED
SHOWERS AND THUNDERSTORMS TODAY. PATCHY FOG OVERNIGHT. SCATTERED
SHOWERS AND THUNDERSTORMS THROUGH EARLY EVENING TONIGHT. WAVES 1
TO 3 FEET.

$$

07



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