Great Lakes Forecast
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000
FZUS63 KMQT 170157
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
957 PM EDT TUE MAY 16 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS, WHICH
IS THE AVERAGE OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL
OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...A 29.5 INCH TROUGH STRETCHING FROM NORTHERN
ONTARIO...ACROSS WESTERN LAKE SUPERIOR...TO THE CENTRAL
PLAINS...WILL STALL OVER UPPER MICHIGAN ON WEDNESDAY. A 29.4 INCH
LOW PRESSURE FORMING ON THIS TROUGH OVER THE CENTRAL PLAINS ON
WEDNESDAY WILL TRACK TO THE UPPER GREAT LAKES ON THURSDAY AND
NORTHERN NEW ENGLAND BY FRIDAY AS HIGH PRESSURE OF 30.3 INCHES
BUILDS FROM SASKATCHEWAN TO NORTHERN ONTARIO. THIS HIGH WILL MOVE
ACROSS THE LOWER GREAT LAKES AND NEW ENGLAND SATURDAY AND SUNDAY
AS LOW PRESSURE OF 29.7 INCHES OVER THE PLAINS MOVES TO THE UPPER
GREAT LAKES ON SUNDAY.

LSZ162-171000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
957 PM EDT TUE MAY 16 2017 /857 PM CDT TUE MAY 16 2017/

...GALE WARNING IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY
MORNING...

.REST OF TONIGHT...VARIABLE WINDS 5 TO 15 KNOTS BECOMING WEST
AFTER MIDNIGHT. AREAS OF FOG BECOMING WIDESPREAD AFTER MIDNIGHT.
SCATTERED SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS IN THE AFTERNOON...THEN INCREASING TO 15 TO 25 KNOTS
LATE. PATCHY FOG. A CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON...THEN SHOWERS. A CHANCE OF THUNDERSTORMS. WAVES
BUILDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTHEAST GALES TO 35 KNOTS. AREAS OF FOG.
RAIN SHOWERS. WAVES BUILDING TO 6 TO 9 FEET OCCASIONALLY TO
11 FEET.
.THURSDAY...NORTH GALES TO 35 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. SHOWERS LIKELY THROUGH EARLY
AFTERNOON...THEN A SLIGHT CHANCE OF SHOWERS. WAVES SUBSIDING TO 3
TO 5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST. RAIN
SHOWERS LIKELY...THEN A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET...THEN SUBSIDING TO 2 TO
4 FEET.
.SUNDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. A CHANCE
OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ263-171000-
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-
957 PM EDT TUE MAY 16 2017

...GALE WARNING IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY
AFTERNOON...

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING WEST
AFTER MIDNIGHT. AREAS OF FOG BECOMING WIDESPREAD AFTER MIDNIGHT.
SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT...THEN A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST IN THE
AFTERNOON...THEN INCREASING TO 15 TO 25 KNOTS LATE. PATCHY FOG. A
CHANCE OF SHOWERS THROUGH EARLY AFTERNOON...THEN SHOWERS. A
CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN
BUILDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTHEAST GALES TO 35 KNOTS. AREAS OF FOG. A
SLIGHT CHANCE OF THUNDERSTORMS THROUGH MIDNIGHT. SHOWERS. WAVES
BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
.THURSDAY...NORTH GALES TO 35 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS BY MID AFTERNOON. SHOWERS LIKELY THROUGH EARLY
AFTERNOON...THEN A CHANCE OF SHOWERS. WAVES SUBSIDING TO 3 TO 5
FEET OCCASIONALLY TO 7 FEET.
.THURSDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS. SHOWERS LIKELY...THEN A
CHANCE OF SHOWERS. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING
TO 1 TO 3 FEET.
.SUNDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO 15 KNOTS.
A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ264-171000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
957 PM EDT TUE MAY 16 2017

...GALE WARNING IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY
AFTERNOON...

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH
5 TO 15 KNOTS AFTER MIDNIGHT...THEN BECOMING WEST 10 TO 20 KNOTS
LATE. WIDESPREAD FOG. SHOWERS AND THUNDERSTORMS LIKELY THROUGH
MIDNIGHT...THEN A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO
4 FEET BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH IN THE
AFTERNOON...THEN INCREASING TO 15 TO 25 KNOTS LATE. PATCHY FOG. A
CHANCE OF SHOWERS THROUGH EARLY AFTERNOON...THEN SHOWERS LIKELY.
A CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2
FEET...THEN BUILDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTHEAST GALES TO 40 KNOTS. AREAS OF FOG.
RAIN SHOWERS. WAVES BUILDING TO 6 TO 9 FEET OCCASIONALLY TO
11 FEET.
.THURSDAY...NORTH GALES TO 35 KNOTS. SHOWERS THROUGH EARLY
AFTERNOON...THEN A CHANCE OF SHOWERS. WAVES BUILDING TO 7 TO 10
FEET OCCASIONALLY TO 13 FEET...THEN SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. SHOWERS LIKELY...THEN A
CHANCE OF SHOWERS. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO 15 KNOTS.
A CHANCE OF SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN
BUILDING TO 1 TO 3 FEET.

$$

LSZ265-171000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
957 PM EDT TUE MAY 16 2017

...GALE WARNING IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY AFTERNOON...

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT...THEN VEERING WEST LATE. PATCHY FOG BECOMING
WIDESPREAD AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1
TO 3 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS IN THE AFTERNOON. AREAS OF FOG. SHOWERS WITH
THUNDERSTORMS LIKELY. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH
20 TO 30 KNOTS AFTER MIDNIGHT...THEN BECOMING NORTHEAST GALES TO
35 KNOTS LATE. AREAS OF FOG. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL
THROUGH MIDNIGHT. WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10
FEET.
.THURSDAY...NORTH GALES TO 35 KNOTS. PATCHY FOG THROUGH EARLY
AFTERNOON. SHOWERS THROUGH EARLY AFTERNOON...THEN A CHANCE OF
SHOWERS. WAVES BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13
FEET...THEN SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. SHOWERS LIKELY. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING WEST. A CHANCE
OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-171000-
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-
957 PM EDT TUE MAY 16 2017

...GALE WARNING IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY AFTERNOON...

.REST OF TONIGHT...SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING
SOUTHWEST 10 TO 20 KNOTS OVERNIGHT. PATCHY FOG BECOMING
WIDESPREAD AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTH IN THE
AFTERNOON. AREAS OF FOG. THUNDERSTORMS LIKELY THROUGH EARLY
AFTERNOON. SHOWERS LIKELY. A CHANCE OF THUNDERSTORMS BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO
GALES TO 35 KNOTS AFTER MIDNIGHT. AREAS OF FOG. SHOWERS AND A
CHANCE OF THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE HEAVY
RAINFALL THROUGH MIDNIGHT. WAVES BUILDING TO 6 TO 9 FEET
OCCASIONALLY TO 11 FEET.
.THURSDAY...NORTH GALES TO 35 KNOTS. AREAS OF FOG THROUGH EARLY
AFTERNOON. SHOWERS THROUGH EARLY AFTERNOON...THEN A CHANCE OF
SHOWERS. WAVES BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13
FEET...THEN SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF SHOWERS...THEN SHOWERS LIKELY. WAVES
BUILDING TO 2 TO 4 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTHWEST. A
CHANCE OF SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ267-171000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
957 PM EDT TUE MAY 16 2017

.REST OF TONIGHT...SOUTHEAST WINDS 20 TO 30 KNOTS VEERING SOUTH
AFTER MIDNIGHT...THEN DIMINISHING TO 15 TO 25 KNOTS LATE. PATCHY
FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS...MAINLY OVERNIGHT.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH LATE.
PATCHY FOG. SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT...THEN BACKING NORTHEAST LATE.
AREAS OF FOG. SHOWERS AND A CHANCE OF THUNDERSTORMS. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL THROUGH MIDNIGHT. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY...NORTHEAST WINDS 20 TO 30 KNOTS BACKING NORTH BY MID
AFTERNOON. AREAS OF FOG THROUGH EARLY AFTERNOON. A SLIGHT CHANCE
OF THUNDERSTORMS THROUGH EARLY AFTERNOON. SHOWERS. WAVES BUILDING
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS VEERING SOUTHEAST. A CHANCE
OF RAIN SHOWERS...THEN RAIN SHOWERS LIKELY. WAVES BUILDING TO
2 TO 4 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTHWEST. A
CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN
BUILDING TO 2 TO 4 FEET.

$$
LSZ261-171000-
MAFOR 1703/
SUPERIOR WEST 01319 11313 11623 11613 11703 11116 11126 11146
11156. CHANCE OF SHOWERS OVERNIGHT. CHANCE OF THUNDERSTORMS.
PATCHY FOG WEDNESDAY AFTERNOON. WAVES 1 TO 2 FEET OVERNIGHT AND
WEDNESDAY BUILDING TO 3 TO 6 FEET WEDNESDAY EVENING.

SUPERIOR NORTH CENTRAL 11419 11523 11623 11613 11710 12826 11846.
CHANCE OF SHOWERS OVERNIGHT AND WEDNESDAY MORNING. CHANCE OF
THUNDERSTORMS. PATCHY FOG WEDNESDAY AFTERNOON. WAVES 1 TO 4 FEET.

SUPERIOR SOUTH CENTRAL 11420 11523 11626 11619 11709 11806 11819
11836. PATCHY FOG LATE THIS EVENING. CHANCE OF SHOWERS AND
THUNDERSTORMS OVERNIGHT. WAVES 1 TO 4 FEET.

SUPERIOR EAST 11339 11439 11523 11626 11619 11706 11819 11126.
PATCHY FOG TONIGHT. CHANCE OF SHOWERS LATE OVERNIGHT THROUGH MID
MORNING WEDNESDAY. CHANCE OF THUNDERSTORMS LATE OVERNIGHT THROUGH
WEDNESDAY EVENING. PATCHY FOG WEDNESDAY EVENING. WAVES 1 TO 5
FEET.

$$

KLUBER

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/MQT/GLFTABLE

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES



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