Great Lakes Forecast
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000
FZUS63 KMQT 160151
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
951 PM EDT MON MAY 15 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...AS A 29.4 INCH LOW PRESSURE SYSTEM MOVES FROM THE
CENTRAL HIGH PLAINS TO THE UPPER MISSISSIPPI VALLEY THROUGH
WEDNESDAY...AN ASSOCIATED 29.7 INCH TROUGH WILL MOVE NORTHWARD
ACROSS LAKE SUPERIOR TUESDAY AFTERNOON AND EVENING. THE LOW WILL
BECOME AN ELONGATED 29.5 INCH TROUGH THAT WILL SLIDE EASTWARD
ACROSS THE UPPER GREAT LAKES WEDNESDAY AFTERNOON THROUGH THURSDAY.
THURSDAY NIGHT THROUGH SATURDAY THE TROUGH WILL CONTINUE TO SHIFT
EASTWARD AS 30.4 HIGH PRESSURE SETTLES OVER THE NORTHERN PLAINS.
A 29.9 INCH LOW DEVELOPING OVER THE MID MISSISSIPPI VALLEY WILL
THEN TRACK INTO THE WESTERN GREAT LAKES SATURDAY NIGHT.

LSZ162-161000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
951 PM EDT MON MAY 15 2017 /851 PM CDT MON MAY 15 2017/

.REST OF TONIGHT...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS LATE. ISOLATED SHOWERS...BECOMING SCATTERED LATE.
WAVES CALM TO 2 FEET BUILDING TO 1 TO 3 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS LATE. PATCHY FOG. SHOWERS AND THUNDERSTORMS LIKELY.
WAVES 1 TO 3 FEET.
.TUESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT...THEN VEERING WEST LATE. AREAS OF FOG. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS
THROUGH EARLY AFTERNOON...THEN SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO
GALES TO 35 KNOTS AFTER MIDNIGHT. AREAS OF FOG. SHOWERS. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
.THURSDAY...NORTH GALES TO 35 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. SHOWERS LIKELY THROUGH EARLY
AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST. WAVES CALM
TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ263-161000-
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-
951 PM EDT MON MAY 15 2017

.REST OF TONIGHT...EAST WINDS 5 TO 15 KNOTS. ISOLATED SHOWERS.
WAVES CALM TO 2 FEET.
.TUESDAY...EAST WINDS 5 TO 15 KNOTS. PATCHY FOG. SHOWERS AND
THUNDERSTORMS LIKELY. WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING
SOUTHWEST 10 TO 20 KNOTS AFTER MIDNIGHT. AREAS OF FOG. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET...
THEN SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. AREAS OF FOG. SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. 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. WAVES
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
.THURSDAY...NORTH GALES TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS
BY MID AFTERNOON. SHOWERS LIKELY THROUGH EARLY AFTERNOON. WAVES
BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET...THEN SUBSIDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST. A CHANCE
OF RAIN SHOWERS. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING
TO CALM TO 2 FEET.

$$

LSZ264-161000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
951 PM EDT MON MAY 15 2017

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

$$

LSZ265-161000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
951 PM EDT MON MAY 15 2017

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. ISOLATED
SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS LATE. PATCHY FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH
AFTER MIDNIGHT...THEN BECOMING SOUTHWEST 10 TO 20 KNOTS LATE.
AREAS OF FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS BY MID AFTERNOON. AREAS OF FOG. SHOWERS AND A CHANCE OF
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. AREAS OF FOG.
RAIN SHOWERS AND A CHANCE OF THUNDERSTORMS. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON.
RAIN SHOWERS LIKELY THROUGH EARLY AFTERNOON...THEN A CHANCE OF
RAIN SHOWERS BY MID AFTERNOON. WAVES BUILDING TO 7 TO 10 FEET
OCCASIONALLY TO 13 FEET...THEN SUBSIDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-161000-
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-
951 PM EDT MON MAY 15 2017

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. ISOLATED
SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. PATCHY FOG. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING SOUTH
20 TO 30 KNOTS AFTER MIDNIGHT...THEN DIMINISHING TO 15 TO
25 KNOTS LATE. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING NORTHEAST BY
MID AFTERNOON. AREAS OF FOG. SHOWERS AND A CHANCE OF
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 20 TO 30 KNOTS VEERING SOUTH
AFTER MIDNIGHT. AREAS OF FOG. SHOWERS AND A CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9
FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO GALES TO 35
KNOTS IN THE AFTERNOON...EXCEPT NORTH GALES TO 35 KNOTS ACROSS THE
NORTHERN PORTION THROUGH THE DAY. PATCHY FOG THROUGH EARLY
AFTERNOON. SHOWERS LIKELY THROUGH EARLY AFTERNOON...THEN A CHANCE
OF SHOWERS. WAVES BUILDING TO 8 TO 11 FEET OCCASIONALLY TO 14
FEET...THEN SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ267-161000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
951 PM EDT MON MAY 15 2017

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. ISOLATED
SHOWERS. WAVES CALM TO 2 FEET BUILDING TO 1 TO 3 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. PATCHY FOG. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...SOUTHEAST WINDS 20 TO 30 KNOTS VEERING SOUTH
AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO
7 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH BY MID
AFTERNOON. AREAS OF FOG. SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. AREAS OF FOG. SHOWERS
AND A CHANCE OF THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON.
SHOWERS LIKELY. WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10
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 VEERING EAST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS. WAVES
CALM TO 2 FEET.

$$
LSZ261-161000-
MAFOR 1603/
SUPERIOR WEST 12110 11120 11229 12129 12229. SCATTERED SHOWERS
LATE OVERNIGHT. PATCHY FOG TUESDAY AFTERNOON AND EVENING. WAVES 1
TO 3 FEET.

SUPERIOR NORTH CENTRAL 14310 11320 11326 11320 11323. PATCHY FOG
TUESDAY AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS TUESDAY
AFTERNOON AND EVENING. WAVES 1 TO 5 FEET.

SUPERIOR SOUTH CENTRAL 14310 11310 12320 11333. PATCHY FOG TUESDAY
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS TUESDAY AND TUESDAY
EVENING. WAVES 1 TO 4 FEET.

SUPERIOR EAST 12310 11320 11310 12320 11330 11333. PATCHY FOG
TUESDAY AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS TUESDAY AND
TUESDAY 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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