Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 260145
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
945 PM EDT SAT MAR 25 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...HIGH PRESSURE OF 30.6 INCHES OVER JAMES BAY WILL DRIFT
EAST ACROSS QUEBEC OVERNIGHT AND INTO NEW ENGLAND AND FAR EASTERN
QUEBEC BY SUNDAY NIGHT. LOW PRESSURE OF 29.7 INCHES OVER NORTHWEST
MISSOURI TONIGHT LIFTS ACROSS CENTRAL LAKE MICHIGAN INTO LAKE
HURON BY LATE SUNDAY NIGHT. THIS LOW WILL TRACK ACROSS THE LOWER
GREAT LAKES MONDAY AFTERNOON INTO TUESDAY AS A 30.2 INCH RIDGE
BUILDS OVER THE WESTERN GREAT LAKES. THIS RIDGE WILL BUILD TO 30.4
INCHES OVER THE UPPER GREAT LAKES ON WEDNESDAY. THE RIDGE AXIS
SHIFTS TO THE EAST ON THURSDAY AS A 29.9 INCH LOW MOVES ACROSS
NORTHERN ONTARIO.

LSZ162-260945-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
945 PM EDT SAT MAR 25 2017 /845 PM CDT SAT MAR 25 2017/

.REST OF TONIGHT...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN OR FREEZING RAIN AFTER
MIDNIGHT. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN OR FREEZING RAIN IN
THE MORNING...A CHANCE OF RAIN IN THE AFTERNOON. WAVES 1 TO 3
FEET.
.SUNDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN THROUGH MIDNIGHT. PATCHY
FOG. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING SOUTH LESS THAN
10 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-260945-
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-
945 PM EDT SAT MAR 25 2017

.REST OF TONIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN OR
FREEZING RAIN. WAVES 3 TO 5 FEET.
.SUNDAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. A CHANCE OF RAIN OR FREEZING RAIN THROUGH EARLY
AFTERNOON...THEN A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO 3
FEET.
.SUNDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. PATCHY FOG. A SLIGHT
CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES
BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ264-260945-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
945 PM EDT SAT MAR 25 2017

.REST OF TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF
RAIN OR FREEZING RAIN AFTER MIDNIGHT. WAVES 3 TO 6 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON. RAIN OR FREEZING RAIN LIKELY THROUGH
EARLY AFTERNOON...THEN A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO
3 FEET.
.SUNDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN.
WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST. WAVES
CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-260945-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
945 PM EDT SAT MAR 25 2017

.REST OF TONIGHT...EAST WINDS 15 TO 25 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. FREEZING RAIN AND RAIN AFTER MIDNIGHT. WAVES 3 TO
6 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. RAIN AND FREEZING RAIN LIKELY THROUGH EARLY
AFTERNOON...THEN A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO 3
FEET.
.SUNDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST AFTER
MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. A CHANCE OF RAIN. WAVES
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN THROUGH EARLY
AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST.
WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-260945-
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-
945 PM EDT SAT MAR 25 2017

.REST OF TONIGHT...EAST WINDS 15 TO 25 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. RAIN AND FREEZING RAIN LIKELY...MAINLY AFTER
MIDNIGHT. WAVES 3 TO 6 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
BY MID AFTERNOON. RAIN AND FREEZING RAIN THROUGH EARLY
AFTERNOON...THEN A CHANCE OF RAIN. WAVES SUBSIDING TO 1 TO 3
FEET.
.SUNDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. PATCHY FOG THROUGH MIDNIGHT. A CHANCE OF RAIN. WAVES
SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF RAIN
THROUGH EARLY AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST.
WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ267-260945-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
945 PM EDT SAT MAR 25 2017

.REST OF TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. FREEZING RAIN AFTER MIDNIGHT.
WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS. FREEZING RAIN THROUGH
EARLY AFTERNOON...THEN RAIN LIKELY WITH A SLIGHT CHANCE OF
FREEZING RAIN. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTH AFTER
MIDNIGHT. PATCHY FOG. RAIN LIKELY THROUGH MIDNIGHT...THEN A
CHANCE OF RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. A CHANCE OF RAIN THROUGH EARLY AFTERNOON. WAVES CALM
TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS VEERING EAST. WAVES CALM
TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$
LSZ261-260945-
MAFOR 2603/
SUPERIOR WEST 11230 12220 11210 14110. CHANCE OF RAIN OVERNIGHT
THROUGH EARLY SUNDAY EVENING. WAVES 3 TO 6 FEET OVERNIGHT. WAVES
2 TO 3 FEET SUNDAY AND SUNDAY EVENING.

SUPERIOR NORTH CENTRAL 13330 12326 11210 11200 11100. CHANCE OF
RAIN LATE OVERNIGHT AND SUNDAY. PATCHY FOG THROUGH EARLY EVENING.
CHANCE OF RAIN SUNDAY EVENING. WAVES 3 TO 6 FEET OVERNIGHT SUBSIDING
TO 2 TO 3 FEET SUNDAY EVENING.


SUPERIOR SOUTH CENTRAL 12330 11326 11226 11216 11210 11200 11100.
CHANCE OF LIGHT FREEZING RAIN LATE IN THE MORNING. CHANCE OF RAIN
LATE SUNDAY AND SUNDAY EVENING. WAVES 3 TO 5 FEET OVERNIGHT
SUBSIDING TO 2 TO 3 FEET SUNDAY AND SUNDAY EVENING.


SUPERIOR EAST 13330 11340 12336 11326 11206. CHANCE OF LIGHT
FREEZING RAIN LATE OVERNIGHT AND EARLY SUNDAY AFTERNOON. WAVES 2
TO 5 FEET OVERNIGHT AND SUNDAY SUBSIDING TO 1 TO 3 FEET SUNDAY
EVENING.

$$

RJT



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