Great Lakes Forecast
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150
FZUS63 KMQT 280857
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
357 AM EST TUE FEB 28 2017

.SYNOPSIS...A 29.6 INCH LOW PRESSURE OVER NEBRASKA THIS MORNING WILL
MOVE NORTHEAST ACROSS NORTHERN LOWER MICHIGAN ON TUESDAY NIGHT AND
INTO SOUTHERN QUEBEC ON WEDNESDAY WHILE DEEPENING TO 29.2 INCHES.
ALTHOUGH THE LOW WILL CONTINUE EAST INTO THE CANADIAN MARITIMES ON
THURSDAY...A WEAK LOW PRESSURE TROUGH AVERAGING 30.1 INCHES WILL
LINGER OVER THE UPPER GREAT LAKES. THEN EXPECT A 30.5 INCH HIGH
PRESSURE CENTERED ACROSS MANITOBA ON THURSDAY TO SLIDE INTO THE OHIO
RIVER VALLEY ON FRIDAY BUT EXTEND A RIDGE AVERAGING 30.4 INCHES INTO
THE UPPER LAKES AND ONTARIO. THIS AREA OF HIGH PRESSURE WILL DRIFT
TOWARD THE EAST COAST ON SATURDAY AS A 29.6 INCH LOW PRESSURE
OVER SOUTH CENTRAL CANADA MOVES EAST TOWARD NORTHWEST ONTARIO.

LSZ162-281700-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
357 AM EST TUE FEB 28 2017 /257 AM CST TUE FEB 28 2017/

.EARLY THIS MORNING...NORTHEAST WINDS 5 TO 15 KNOTS. A CHANCE OF
SNOW...POSSIBLY MIXED WITH RAIN. WAVES CALM TO 2 FEET.
.TODAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. SNOW...POSSIBLY MIXED WITH RAIN IN THE
MORNING...THEN A CHANCE OF SNOW IN THE AFTERNOON. WAVES BUILDING
TO 4 TO 7 FEET.
.TONIGHT...NORTHEAST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. A CHANCE OF SNOW. WAVES
BUILDING TO 6 TO 9 FEET.
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. A
SLIGHT CHANCE OF SNOW IN THE MORNING. WAVES SUBSIDING TO 3 TO
5 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES CALM
TO 2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO 20 KNOTS.
WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. A
CHANCE OF SNOW. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING
TO 1 TO 3 FEET.

$$

LSZ263-281700-
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-
357 AM EST TUE FEB 28 2017

...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH WEDNESDAY
MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM LATE TONIGHT
THROUGH WEDNESDAY AFTERNOON...

.EARLY THIS MORNING...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF
SNOW...POSSIBLY MIXED WITH RAIN AND SLEET. WAVES CALM TO 2 FEET.
.TODAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO GALES TO 35
KNOTS LATE THIS AFTERNOON. SNOW LIKELY IN THE MORNING. RAIN
LIKELY. A CHANCE OF SNOW IN THE AFTERNOON. WAVES BUILDING TO 4 TO
7 FEET.
.TONIGHT...NORTHEAST GALES TO 35 KNOTS. FREEZING SPRAY. A CHANCE
OF SNOW. WAVES BUILDING TO 7 TO 11 FEET.
.WEDNESDAY...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW IN THE MORNING.
FREEZING SPRAY. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A CHANCE OF
SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING
TO 1 TO 3 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO
4 FEET.

$$

LSZ264-281700-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
357 AM EST TUE FEB 28 2017

...GALE WARNING IN EFFECT FROM THIS AFTERNOON THROUGH WEDNESDAY
MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM LATE TONIGHT
THROUGH WEDNESDAY AFTERNOON...

.EARLY THIS MORNING...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF
SNOW...POSSIBLY MIXED WITH RAIN. WAVES 1 TO 3 FEET.
.TODAY...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON THEN TO GALES TO 35 KNOTS LATE. RAIN
LIKELY IN THE MORNING. SNOW LIKELY. WAVES SUBSIDING TO CALM TO 2
FEET...THEN BUILDING TO 4 TO 7 FEET.
.TONIGHT...NORTHEAST GALES TO 40 KNOTS. HEAVY FREEZING SPRAY. A
CHANCE OF SNOW. WAVES BUILDING TO 8 TO 11 FEET.
.WEDNESDAY...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 20 TO
30 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW IN THE
MORNING. HEAVY FREEZING SPRAY. WAVES SUBSIDING TO 3 TO 6 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES CALM
TO 2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 3 TO 6 FEET.

$$

LSZ265-281700-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
357 AM EST TUE FEB 28 2017

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

.EARLY THIS MORNING...SOUTHEAST WINDS 5 TO 15 KNOTS. A SLIGHT
CHANCE OF RAIN...SNOW AND SLEET. WAVES CALM TO 2 FEET.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW AND SLEET IN THE
MORNING. RAIN LIKELY. SNOW...POSSIBLY MIXED WITH SLEET IN THE
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.TONIGHT...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. FREEZING SPRAY AFTER
MIDNIGHT. WAVES BUILDING TO 7 TO 10 FEET.
.WEDNESDAY...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW.
WAVES SUBSIDING TO 4 TO 7 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE
EVENING...THEN A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW. A
CHANCE OF RAIN. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO
2 TO 4 FEET.

$$

LSZ266-281700-
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-
357 AM EST TUE FEB 28 2017

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

.EARLY THIS MORNING...SOUTH WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF RAIN...SNOW AND SLEET. WAVES 1 TO 3 FEET.
.TODAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS IN THE AFTERNOON. RAIN LIKELY...POSSIBLY MIXED WITH SNOW
AND SLEET. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
4 TO 7 FEET.
.TONIGHT...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SLEET IN THE
EVENING. A CHANCE OF SNOW. FREEZING SPRAY AFTER MIDNIGHT. WAVES
BUILDING TO 8 TO 11 FEET.
.WEDNESDAY...NORTHEAST GALES TO 40 KNOTS BECOMING NORTH GALES TO
35 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW.
WAVES SUBSIDING TO 4 TO 7 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A
SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE
EVENING...THEN A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES
BUILDING TO 3 TO 5 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW. A
CHANCE OF RAIN. WAVES BUILDING TO 3 TO 6 FEET.

$$

LSZ267-281700-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
357 AM EST TUE FEB 28 2017

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

.EARLY THIS MORNING...SOUTH WINDS 10 TO 20 KNOTS. WAVES 1 TO
3 FEET.
.TODAY...SOUTH WINDS 10 TO 20 KNOTS BACKING EAST IN THE
AFTERNOON. RAIN LIKELY. WAVES SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN...POSSIBLY MIXED WITH
SLEET IN THE EVENING. A CHANCE OF SNOW. FREEZING SPRAY AFTER
MIDNIGHT. WAVES BUILDING TO 7 TO 10 FEET.
.WEDNESDAY...NORTHEAST GALES TO 40 KNOTS BECOMING NORTH GALES TO
35 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW.
WAVES SUBSIDING TO 4 TO 7 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A
SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO
1 TO 3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY. WAVES
BUILDING TO 3 TO 5 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS. SNOW SHOWERS LIKELY...THEN A CHANCE OF SNOW. WAVES
SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 3 TO 5 FEET.

$$

LSZ261-281700-
MAFOR 2810/
SUPERIOR WEST...GALE WARNING IN EFFECT...11210 11127 11137 12140
13150. CHANCE OF SNOW AND RAIN THIS MORNING. CHANCE OF SNOW THIS
AFTERNOON AND EVENING. FREEZING SPRAY LATE IN THE EVENING. WAVES
1 TO 3 FEET BUILDING TO 4 TO 7 FEET TODAY. WAVES BUILDING TO 7 TO
10 FEET TONIGHT.

SUPERIOR NORTH CENTRAL...GALE WARNING AND HEAVY FREEZING SPRAY
WARNING IN EFFECT...11300 11217 11137 11147 11150 11151 11150
11152. CHANCE OF SNOW AND RAIN THROUGH MID MORNING. CHANCE OF SNOW
LATE TODAY AND THIS EVENING. FREEZING SPRAY IN THE EVENING. WAVES
1 TO 3 FEET BUILDING TO 3 TO 6 FEET TODAY. WAVES BUILDING TO 8 TO
11 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11310 12306
11127 11130 12140 11141. CHANCE OF RAIN THROUGH MID MORNING.
CHANCE OF SNOW LATE TODAY. FREEZING SPRAY LATE. CHANCE OF SNOW
AND RAIN THROUGH EARLY EVENING...THEN CHANCE OF SNOW FROM LATE
EVENING ON TONIGHT. WAVES 1 TO 3 FEET TODAY. WAVES BUILDING TO 6
TO 10 FEET TONIGHT.

SUPERIOR EAST...GALE WARNING IN EFFECT...12410 11316 11216 11120
12150 11151. CHANCE OF RAIN THROUGH MID MORNING. CHANCE OF
RAIN AND SNOW THROUGH EARLY EVENING...THEN A CHANCE OF SNOW.
WAVES 1 TO 3 FEET TODAY. WAVES BUILDING TO 7 TO 10 FEET TONIGHT.

$$

JLB



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