Great Lakes Forecast
Issued by NWS

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217
FZUS63 KMQT 270749
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
349 AM EDT TUE SEP 27 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...29.4 INCH LOW PRESSURE JUST NORTH OF LAKE SUPERIOR WILL
DRIFT SOUTHWARD ACROSS THE EAST HALF OF LAKE SUPERIOR TODAY...AND
CENTRAL UPPER MICHIGAN THIS EVENING WHILE WEAKENING TO 29.6 INCHES.
THE LOW WILL THEN WEAKEN TO 29.9 INCHES THROUGH WEDNESDAY AFTERNOON
AS IT MOVES SOUTHWARD TO THE UPPER OHIO VALLEY. A HIGH PRESSURE RIDGE
OF 30.4 INCHES WILL THEN BUILD ACROSS THE UPPER MISSISSIPPI VALLEY
THURSDAY THROUGH SATURDAY WHILE THE LOW MEANDERS AROUND THE UPPER
OHIO VALLEY AND LOWER GREAT LAKES.

LSZ162-271600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
349 AM EDT TUE SEP 27 2016 /249 AM CDT TUE SEP 27 2016/

...GALE WARNING IN EFFECT UNTIL 11 AM EDT /10 AM CDT/ THIS
MORNING...

.EARLY THIS MORNING...NORTHWEST GALES TO 35 KNOTS. SCATTERED
SHOWERS. WAVES 4 TO 7 FEET.
.TODAY...NORTHWEST GALES TO 35 KNOTS THROUGH MID MORNING BECOMING
NORTH 15 TO 25 KNOTS BY MID AFTERNOON. SCATTERED SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET.
.TONIGHT...NORTH WINDS 20 TO 30 KNOTS. SCATTERED SHOWERS. WAVES
BUILDING TO 6 TO 9 FEET.
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
SHOWERS THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-271600-
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-
349 AM EDT TUE SEP 27 2016

...GALE WARNING IN EFFECT UNTIL 11 AM EDT THIS MORNING...

.TODAY...NORTHWEST GALES TO 35 KNOTS BECOMING NORTH 20 TO 30 KNOTS
BY MID AFTERNOON. NUMEROUS SHOWERS. WAVES 6 TO 9 FEET SUBSIDING TO 3
TO 5 FEET.
.TONIGHT...NORTH WINDS 20 TO 30 KNOTS VEERING NORTHEAST AFTER
MIDNIGHT. NUMEROUS SHOWERS THROUGH MIDNIGHT. ISOLATED
THUNDERSTORMS. SCATTERED SHOWERS AFTER MIDNIGHT. WAVES BUILDING
TO 6 TO 9 FEET.
.WEDNESDAY...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY THROUGH SATURDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES
CALM TO 2 FEET.

$$

LSZ264-271600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
349 AM EDT TUE SEP 27 2016

...GALE WARNING IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING...

.EARLY THIS MORNING...NORTHWEST GALES TO 35 KNOTS. NUMEROUS SHOWERS.
WAVES 4 TO 8 FEET.
.TODAY...NORTHWEST WINDS 20 TO 30 KNOTS VEERING NORTH BY MID
AFTERNOON. NUMEROUS SHOWERS. ISOLATED THUNDERSTORMS BY MID
AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET.
.TONIGHT...NORTHEAST WINDS 20 TO 30 KNOTS. NUMEROUS SHOWERS AND
ISOLATED THUNDERSTORMS THROUGH MIDNIGHT...THEN SCATTERED SHOWERS
AFTER MIDNIGHT. WAVES BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO
4 TO 7 FEET.
.WEDNESDAY...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS THROUGH
EARLY AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST. WAVES CALM
TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST. WAVES
CALM TO 2 FEET.

$$

LSZ265-271600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
349 AM EDT TUE SEP 27 2016

...GALE WARNING IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING...

.EARLY THIS MORNING...WEST GALES TO 35 KNOTS. NUMEROUS SHOWERS.
WAVES 3 TO 6 FEET.
.TODAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. NUMEROUS SHOWERS. ISOLATED
THUNDERSTORMS BY MID AFTERNOON. A SLIGHT CHANCE OF WATERSPOUTS BY
MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF WATERSPOUTS THROUGH
MIDNIGHT. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS. WAVES
BUILDING TO 3 TO 6 FEET.
.WEDNESDAY...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES BUILDING TO
3 TO 6 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.THURSDAY NIGHT THROUGH SATURDAY...NORTHEAST WINDS 10 TO 20 KNOTS.
WAVES CALM TO 2 FEET.

$$

LSZ266-271600-
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-
349 AM EDT TUE SEP 27 2016

...GALE WARNING IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING...

.EARLY THIS MORNING...WEST GALES TO 35 KNOTS. PERIODS OF SHOWERS.
WAVES 4 TO 8 FEET.
.TODAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO 20 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF WATERSPOUTS. PERIODS OF
SHOWERS AND ISOLATED THUNDERSTORMS. WAVES SUBSIDING TO 3 TO 5 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. A SLIGHT CHANCE OF WATERSPOUTS THROUGH MIDNIGHT.
NUMEROUS SHOWERS THROUGH MIDNIGHT. ISOLATED THUNDERSTORMS.
SCATTERED SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET...
THEN SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS THROUGH
EARLY AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES BUILDING
TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ267-271600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
349 AM EDT TUE SEP 27 2016

...GALE WARNING IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING...

.EARLY THIS MORNING...SOUTHWEST GALES TO 35 KNOTS. PERIODS OF
SHOWERS. WAVES 4 TO 8 FEET.
.TODAY...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING SOUTH 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF WATERSPOUTS.
PERIODS OF SHOWERS AND ISOLATED THUNDERSTORMS. WAVES SUBSIDING TO
1 TO 3 FEET.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 15 TO
25 KNOTS AFTER MIDNIGHT. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS THROUGH MIDNIGHT...THEN SCATTERED SHOWERS AFTER
MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.WEDNESDAY...EAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. A SLIGHT CHANCE OF SHOWERS THROUGH EARLY AFTERNOON.
WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.THURSDAY NIGHT THROUGH FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS.
WAVES CALM TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS.
WAVES CALM TO 2 FEET.

$$

LSZ261-271600-
MAFOR 2709/
SUPERIOR WEST...GALE WARNING IN EFFECT...11750 12746 11730 11830
12840 11140. SCATTERED SHOWERS THIS MORNING. SCATTERED SHOWERS
LATE TODAY AND TONIGHT. WAVES 5 TO 8 FEET SUBSIDING TO 3 TO 6 FEET
TODAY. WAVES 3 TO 5 FEET BUILDING TO 5 TO 8 FEET TONIGHT.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...10756 11746 11736
12836 11136 11146 12140. ISOLATED THUNDERSTORMS LATE TODAY THROUGH
MIDNIGHT TONIGHT. SCATTERED SHOWERS AFTER MIDNIGHT. WAVES 4 TO 7
FEET SUBSIDING TO 3 TO 5 FEET TODAY. WAVES 5 TO 8 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...10656 12646 11736
11726 11826 11136 12236. A SLIGHT CHANCE OF WATERSPOUTS THIS
AFTERNOON THROUGH THIS EVENING. ISOLATED THUNDERSTORMS LATE TODAY
THROUGH TONIGHT. WAVES 4 TO 7 FEET SUBSIDING TO 3 TO 6 FEET TODAY.
WAVES 2 TO 4 FEET BUILDING TO 3 TO 6 FEET TONIGHT.

SUPERIOR EAST...GALE WARNING IN EFFECT...10656 11646 11636 12626
11416 11336 11236 11230. A SLIGHT CHANCE OF WATERSPOUTS THROUGH EARLY
EVENING. ISOLATED THUNDERSTORMS TODAY THROUGH THIS EVENING. SCATTERED
SHOWERS LATE TONIGHT. WAVES 5 TO 8 FEET SUBSIDING TO 3 TO 5 FEET
TODAY. WAVES 2 TO 4 FEET TONIGHT.

$$

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