Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 210614
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
214 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
THURSDAY 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.

LSZ162-211415-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
214 AM EDT THU JUL 21 2016 /114 AM CDT THU JUL 21 2016/

...SEVERE THUNDERSTORM WATCH 403 IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

.REST OF TONIGHT...SOUTH 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.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. PATCHY FOG. SCATTERED SHOWERS AND THUNDERSTORMS THROUGH
MID AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES
CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. SHOWERS AND
THUNDERSTORMS LIKELY. 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.

$$

LSZ263-211415-
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-
214 AM EDT THU JUL 21 2016

.REST OF TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG. SCATTERED SHOWERS AND
THUNDERSTORMS THROUGH MID AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT. SHOWERS AND THUNDERSTORMS LIKELY.
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 BUILDING
TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES CALM
TO 2 FEET.

$$

LSZ264-211415-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
214 AM EDT THU JUL 21 2016

.REST OF TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. PATCHY FOG. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. PATCHY FOG. SCATTERED
SHOWERS AND THUNDERSTORMS THROUGH MID AFTERNOON. WAVES BUILDING TO 1
TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. SHOWERS AND
THUNDERSTORMS LIKELY. PATCHY FOG AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.SUNDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST. PATCHY FOG. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-211415-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
214 AM EDT THU JUL 21 2016

.REST OF TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. SCATTERED SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. PATCHY FOG THROUGH
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH
MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. SHOWERS AND
THUNDERSTORMS LIKELY. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-211415-
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-
214 AM EDT THU JUL 21 2016

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS. PATCHY FOG. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG. SCATTERED SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FEET.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. PATCHY FOG THROUGH
MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.SATURDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. SHOWERS AND THUNDERSTORMS LIKELY.
WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST. PATCHY FOG. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 1 TO
3 FEET.
.MONDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ267-211415-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
214 AM EDT THU JUL 21 2016

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KNOTS. PATCHY FOG. WAVES
1 TO 3 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. PATCHY FOG. SCATTERED SHOWERS AND THUNDERSTORMS. WAVES 1
TO 3 FEET.
.THURSDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST
AFTER MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS BACKING EAST 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. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH 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 BECOMING NORTHWEST 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$
LSZ261-211415-
MAFOR 2106 AMD/
SUPERIOR WEST...SEVERE THUNDERSTORM WATCH IN EFFECT...12410 12510
11500 12610. PATCHY FOG. CHANCE OF SHOWERS AND THUNDERSTORMS LATE
OVERNIGHT. PATCHY FOG IN THE MORNING. PATCHY FOG LATE. CHANCE OF
SHOWERS AND THUNDERSTORMS THURSDAY MORNING. PATCHY FOG THROUGH
EARLY EVENING THURSDAY EVENING. WAVES 2 FEET OR LESS.

SUPERIOR NORTH CENTRAL 15510 11610. PATCHY FOG AFTER MIDNIGHT
OVERNIGHT. PATCHY FOG THROUGH EARLY AFTERNOON. CHANCE OF SHOWERS
AND THUNDERSTORMS THROUGH EARLY AFTERNOON THURSDAY. PATCHY FOG
THROUGH EARLY EVENING THURSDAY EVENING. WAVES 1 TO 3 FEET.

SUPERIOR SOUTH CENTRAL 14510 12500 11610. PATCHY FOG LATE. CHANCE
OF SHOWERS AND THUNDERSTORMS THURSDAY. WAVES 1 TO 2 FEET.

SUPERIOR EAST 12410 13510 12500. PATCHY FOG OVERNIGHT. PATCHY
FOG. CHANCE OF SHOWERS AND THUNDERSTORMS THURSDAY. PATCHY FOG
THROUGH EARLY EVENING. CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH EARLY EVENING THURSDAY EVENING. WAVES 2 TO 4 FEET
OVERNIGHT. WAVES 1 TO 3 FEET THURSDAY AND THURSDAY EVENING.

$$

TITUS



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