Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 271955
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
355 PM EDT SAT MAY 27 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 LOW PRESSURE OF 29.6 INCHES OVER NORTHERN ONTARIO
THIS EVENING WILL REMAIN NEARLY STATIONARY OVER ONTARIO THROUGH
THE WEEKEND INTO WEDNESDAY MORNING. ON WEDNESDAY MORNING THE LOW
WEAKENS TO 29.7 INCHES TO THE NORTHEAST OF LAKE SUPERIOR...WHILE
IT EXITS INTO QUEBEC. A NARROW SURFACE RIDGE AROUND 30.0 INCHES
WILL THEN MOVE ACROSS THE GREAT LAKES THURSDAY AND FRIDAY.

LSZ162-280400-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
355 PM EDT SAT MAY 27 2017 /255 PM CDT SAT MAY 27 2017/

.LATE THIS AFTERNOON...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG.
WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. ISOLATED RAIN SHOWERS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST BY MID
AFTERNOON. SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF THUNDERSTORMS THROUGH
MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO
2 TO 4 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES 1 TO 3 FEET.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-280400-
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-
355 PM EDT SAT MAY 27 2017

.LATE THIS AFTERNOON...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG.
WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. PATCHY FOG. ISOLATED
RAIN SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS. PATCHY FOG. SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES BUILDING TO 2 TO 4 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. RAIN SHOWERS LIKELY
THROUGH MIDNIGHT...THEN A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.

$$

LSZ264-280400-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
355 PM EDT SAT MAY 27 2017

.LATE THIS AFTERNOON...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES CALM TO
2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. SCATTERED RAIN
SHOWERS. ISOLATED THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO
2 FEET.
.SUNDAY NIGHT...SOUTH WINDS LESS THAN 10 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES
CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
1 TO 3 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.

$$

LSZ265-280400-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
355 PM EDT SAT MAY 27 2017

.LATE THIS AFTERNOON...EAST WINDS 5 TO 15 KNOTS. PATCHY FOG.
ISOLATED SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. PATCHY FOG. ISOLATED
SHOWERS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO 20 KNOTS
BY MID AFTERNOON. PATCHY FOG. SCATTERED SHOWERS. ISOLATED
THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF THUNDERSTORMS THROUGH
MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES CALM TO 2 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES BUILDING
TO 2 TO 4 FEET.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. WAVES 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.

$$

LSZ266-280400-
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-
355 PM EDT SAT MAY 27 2017

.LATE THIS AFTERNOON...NORTHEAST WINDS LESS THAN 10 KNOTS. PATCHY
FOG. SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS. WAVES
CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. PATCHY FOG. ISOLATED
THUNDERSTORMS THROUGH MIDNIGHT. SCATTERED RAIN SHOWERS. WAVES
CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON.
SCATTERED RAIN SHOWERS. ISOLATED THUNDERSTORMS BY MID AFTERNOON.
WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF THUNDERSTORMS THROUGH MIDNIGHT. A
CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 2 TO
4 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.TUESDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO
2 TO 4 FEET.
.WEDNESDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.

$$

LSZ267-280400-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
355 PM EDT SAT MAY 27 2017

.LATE THIS AFTERNOON...EAST WINDS 5 TO 15 KNOTS. SCATTERED
SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST AFTER
MIDNIGHT. SCATTERED RAIN SHOWERS. PATCHY FOG AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST BY MID
AFTERNOON. PATCHY FOG. NUMEROUS RAIN SHOWERS. ISOLATED
THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF THUNDERSTORMS
THROUGH MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES CALM TO 2 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES BUILDING
TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST BY MID
AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.
.TUESDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES 2 TO 4 FEET.
.WEDNESDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.

$$

LSZ261-280400-
MAFOR 2721/
SUPERIOR WEST 11510 14500 13400. PATCHY FOG THIS EVENING.
SCATTERED SHOWERS SUNDAY. WAVES 2 FEET OR LESS.

SUPERIOR NORTH CENTRAL 11510 14400 11400 12300. PATCHY FOG
TONIGHT. SCATTERED SHOWERS LATE SUNDAY AFTERNOON. WAVES AROUND 1
FOOT.

SUPERIOR SOUTH CENTRAL 11200 11300 14400 12300. PATCHY FOG
OVERNIGHT AND SUNDAY. SCATTERED SHOWERS SUNDAY. WAVES 1 FOOT OR
LESS.

SUPERIOR EAST 11200 11300 12400 13300 11200. PATCHY FOG AFTER
MIDNIGHT THROUGH SUNDAY. SCATTERED SHOWERS THIS EVENING THROUGH
THE EARLY OVERNIGHT. SCATTERED SHOWERS SUNDAY. WAVES 1 FOOT OR
LESS.

$$

JSS

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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