Great Lakes Forecast
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964
FZUS63 KMQT 202053
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
353 PM EST MON FEB 20 2017

.SYNOPSIS...A 30.5 INCH HIGH PRESSURE CENTERED OVER WESTERN QUEBEC
WILL SLIDE TO THE SOUTHEAST...REACHING NEW ENGLAND TUESDAY MORNING.
A 29.6 INCH LOW PRESSURE OVER EASTERN MANITOBA WILL DEEPEN TO
29.1 INCHES AS IT REACHES JAMES BAY TUESDAY NIGHT. THIS LOW WILL
DRIVE A 29.6 INCH TROUGH ACROSS LAKE SUPERIOR TONIGHT. A LOW
PRESSURE OF 29.5 INCHES OVER THE DAKOTAS TUESDAY NIGHT WILL CROSS
THE UPPER GREAT LAKES WEDNESDAY NIGHT AND REACH QUEBEC THURSDAY
EVENING. IN ITS WAKE...A 30.0 INCH HIGH PRESSURE RIDGE WILL BUILD
OVER THE UPPER GREAT LAKES THURSDAY AS LOW PRESSURE OF 29.2 INCHES
ORGANIZES OVER THE CENTRAL PLAINS. THIS LOW WILL TRACK
NORTHEAST...REACHING LAKE MICHIGAN FRIDAY EVENING AND WESTERN
QUEBEC SATURDAY AFTERNOON.

LSZ162-210500-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
353 PM EST MON FEB 20 2017 /253 PM CST MON FEB 20 2017/

.LATE THIS AFTERNOON...NORTHEAST WINDS 10 TO 20 KNOTS. RAIN
SHOWERS AND ISOLATED THUNDERSTORMS. WAVES 3 TO 5 FEET.
.TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTHWEST BY
MIDNIGHT. RAIN SHOWERS IN THE EVENING...BECOMING SCATTERED AFTER
MIDNIGHT. ISOLATED THUNDERSTORMS. WAVES 3 TO 5 FEET.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. ISOLATED RAIN SHOWERS IN THE
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF RAIN IN THE EVENING. PATCHY FOG.
WAVES CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST IN THE
AFTERNOON. A SLIGHT CHANCE OF RAIN IN THE MORNING...THEN RAIN
LIKELY IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN LIKELY IN THE EVENING. A
CHANCE OF RAIN AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES CALM TO 2
FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS VEERING NORTH. A CHANCE
OF SNOW. FREEZING SPRAY. WAVES BUILDING TO 6 TO 9 FEET...THEN
SUBSIDING TO 4 TO 7 FEET.
.SATURDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW. WAVES SUBSIDING TO
CALM TO 2 FEET.

$$

LSZ263-210500-
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-
353 PM EST MON FEB 20 2017

.LATE THIS AFTERNOON...EAST WINDS 20 TO 30 KNOTS. NUMEROUS RAIN
SHOWERS AND ISOLATED THUNDERSTORMS. WAVES 7 TO 10 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN SHOWERS IN THE EVENING. SCATTERED
RAIN SHOWERS AFTER MIDNIGHT. ISOLATED THUNDERSTORMS. WAVES
SUBSIDING TO 3 TO 6 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. ISOLATED RAIN SHOWERS IN THE AFTERNOON. WAVES
SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST
5 TO 15 KNOTS AFTER MIDNIGHT. PATCHY FOG. A SLIGHT CHANCE OF
RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST IN THE
AFTERNOON. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN LIKELY IN THE EVENING. A
CHANCE OF RAIN AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING
TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS VEERING NORTH. A CHANCE
OF SNOW...THEN SNOW LIKELY. FREEZING SPRAY. WAVES BUILDING TO 5 TO
9 FEET.
.SATURDAY...NORTH GALES TO 35 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW. WAVES SUBSIDING TO
1 TO 3 FEET.

$$

LSZ264-210500-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
353 PM EST MON FEB 20 2017

...GALE WARNING IN EFFECT UNTIL 1 AM EST TUESDAY...

.LATE THIS AFTERNOON...SOUTHEAST GALES TO 35 KNOTS. NUMEROUS RAIN
SHOWERS AND ISOLATED THUNDERSTORMS. WAVES 8 TO 11 FEET.
.TONIGHT...SOUTH GALES TO 40 KNOTS BECOMING WEST 20 TO 30 KNOTS
AFTER MIDNIGHT. RAIN SHOWERS. ISOLATED THUNDERSTORMS AFTER
MIDNIGHT. WAVES SUBSIDING TO 4 TO 7 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. ISOLATED RAIN SHOWERS IN THE
AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT. PATCHY FOG. A SLIGHT CHANCE OF RAIN. WAVES SUBSIDING TO
CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTHEAST IN
THE AFTERNOON. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN LIKELY...POSSIBLY MIXED WITH
SNOW IN THE EVENING...THEN SNOW LIKELY. WAVES BUILDING TO 2 TO 4
FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW...THEN
SNOW LIKELY. FREEZING SPRAY. WAVES BUILDING TO 6 TO 9 FEET.
.SATURDAY...NORTH GALES TO 35 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW. WAVES SUBSIDING TO
1 TO 3 FEET.

$$

LSZ265-210500-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
353 PM EST MON FEB 20 2017

...GALE WARNING IN EFFECT UNTIL 1 AM EST TUESDAY...

.LATE THIS AFTERNOON...SOUTHEAST GALES TO 35 KNOTS. SCATTERED
RAIN SHOWERS LATE. WAVES 5 TO 8 FEET.
.TONIGHT...SOUTH GALES TO 35 KNOTS BECOMING WEST 15 TO 25 KNOTS
AFTER MIDNIGHT. RAIN SHOWERS IN THE EVENING...THEN SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS. WAVES BUILDING TO 6 TO 9
FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO 15 KNOTS
IN THE AFTERNOON. ISOLATED SHOWERS AND THUNDERSTORMS IN THE
MORNING. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHEAST IN THE
AFTERNOON. A CHANCE OF RAIN IN THE AFTERNOON. WAVES CALM TO 2
FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN LIKELY IN THE EVENING. A
CHANCE OF RAIN AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING
TO 2 TO 4 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW...THEN
SNOW LIKELY. FREEZING SPRAY. WAVES BUILDING TO 7 TO 10 FEET.
.SATURDAY...NORTH GALES TO 35 KNOTS BACKING NORTHWEST. FREEZING
SPRAY. SNOW LIKELY. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ266-210500-
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-
353 PM EST MON FEB 20 2017

...GALE WARNING IN EFFECT UNTIL 1 AM EST TUESDAY...

.LATE THIS AFTERNOON...SOUTHEAST GALES TO 35 KNOTS. WAVES 7 TO 11
FEET.
.TONIGHT...SOUTHEAST GALES TO 40 KNOTS BECOMING SOUTH 20 TO
30 KNOTS AFTER MIDNIGHT. RAIN SHOWERS IN THE EVENING...THEN
SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS. WAVES 7 TO 11
FEET SUBSIDING TO 4 TO 7 FEET.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS BECOMING SOUTH 10 TO
20 KNOTS IN THE AFTERNOON. ISOLATED SHOWERS AND THUNDERSTORMS IN
THE MORNING. WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. PATCHY FOG. A SLIGHT CHANCE OF
RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTH IN THE
AFTERNOON. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN LIKELY IN THE EVENING. A
CHANCE OF RAIN AFTER MIDNIGHT. A CHANCE OF SNOW AND SLEET. WAVES
BUILDING TO 3 TO 5 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW...THEN
SNOW LIKELY. FREEZING SPRAY. WAVES BUILDING TO 7 TO 10 FEET.
.SATURDAY...NORTH GALES TO 35 KNOTS BACKING NORTHWEST. FREEZING
SPRAY. SNOW. WAVES BUILDING TO 8 TO 11 FEET... THEN SUBSIDING TO 3
TO 5 FEET.

$$

LSZ267-210500-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
353 PM EST MON FEB 20 2017

...GALE WARNING IN EFFECT UNTIL 1 AM EST TUESDAY...

.LATE THIS AFTERNOON...SOUTHEAST GALES TO 35 KNOTS. WAVES 5 TO
8 FEET.
.TONIGHT...SOUTHEAST GALES TO 35 KNOTS BECOMING SOUTH 20 TO 30
KNOTS AFTER MIDNIGHT. RAIN SHOWERS. ISOLATED THUNDERSTORMS AFTER
MIDNIGHT. WAVES BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO 3 TO 5
FEET.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. SCATTERED RAIN SHOWERS AND ISOLATED
THUNDERSTORMS IN THE MORNING. WAVES SUBSIDING TO 2 TO 4 FEET...
THEN BUILDING TO 3 TO 5 FEET.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. PATCHY FOG. A SLIGHT
CHANCE OF RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST IN THE
AFTERNOON. A CHANCE OF RAIN IN THE AFTERNOON. WAVES CALM TO
2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN LIKELY IN THE EVENING. WAVES
BUILDING TO 2 TO 4 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING EAST 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS. SNOW LIKELY. WAVES
BUILDING TO 4 TO 7 FEET.
.SATURDAY...NORTH GALES TO 35 KNOTS BACKING NORTHWEST. FREEZING
SPRAY. SNOW. WAVES BUILDING TO 7 TO 10 FEET...THEN SUBSIDING TO
3 TO 5 FEET.

$$

LSZ261-210500-
MAFOR 2022/
SUPERIOR WEST 11336 11436 11530 12630 11530 12520. SCATTERED RAIN
SHOWERS OVERNIGHT. WAVES 1 TO 5 FEET.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...12356 11456
11540 13630 11530. SCATTERED RAIN SHOWERS EARLY THIS EVENING.
SCATTERED RAIN SHOWERS LATE TONIGHT. WAVES 7 TO 11 FEET SUBSIDING
TO 5 TO 8 FEET TONIGHT. WAVES SUBSIDING TO 3 TO 5 FEET TUESDAY.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11350 11356
11456 11540 12630 11620 11410. SCATTERED RAIN SHOWERS LATE
TONIGHT. WAVES 3 TO 7 FEET TONIGHT SUBSIDING TO 1 TO 3 FEET
TUESDAY.

SUPERIOR EAST...GALE WARNING IN EFFECT...11350 12356 11446 11530
12620 11520. SCATTERED RAIN SHOWERS EARLY THIS EVENING. SCATTERED
RAIN SHOWERS TUESDAY MORNING. WAVES 4 TO 9 FEET TONIGHT SUBSIDING
TO 3 TO 5 FEET TUESDAY.

$$

KLUBER



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