Great Lakes Forecast
Issued by NWS

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774
FZUS63 KMQT 192104
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
404 PM EST SUN FEB 19 2017

.SYNOPSIS...A 30.1 INCH HIGH PRESSURE RIDGE EXTENDING FROM ONTARIO
TO THE OHIO VALLEY WILL STRENGTHEN TO 30.2 INCHES OVER QUEBEC AND
NEW ENGLAND TONIGHT...THEN MOVE OFF THE EAST COAST MONDAY. A 29.5
INCH LOW PRESSURE OVER THE DAKOTAS MONDAY MORNING WILL DEEPEN TO
29.2 INCHES AS IT LIFTS TO FAR NORTHERN ONTARIO BY TUESDAY
MORNING...THEN TO JAMES BAY TUESDAY NIGHT. THIS LOW WILL SEND A
29.6 INCH TROUGH ACROSS LAKE SUPERIOR MONDAY NIGHT. A NEW LOW
PRESSURE OF 29.6 INCHES TRACKING EAST ACROSS THE DAKOTAS TUESDAY
NIGHT WILL CROSS THE UPPER GREAT LAKES ON WEDNESDAY AND QUEBEC
THURSDAY. A HIGH PRESSURE RIDGE OF 30.0 INCHES WILL MOVE OVER THE
UPPER GREAT LAKES THURSDAY AS LOW PRESSURE OF 29.1 INCHES
ORGANIZES OVER THE CENTRAL PLAINS. THIS LOW WILL REACH LAKE
MICHIGAN BY FRIDAY AFTERNOON.

LSZ162-200515-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
404 PM EST SUN FEB 19 2017 /304 PM CST SUN FEB 19 2017/

.LATE THIS AFTERNOON...EAST WINDS 10 TO 20 KNOTS. WAVES 1 TO
3 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
.MONDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN SHOWERS IN
THE MORNING...THEN RAIN SHOWERS IN THE AFTERNOON. WAVES BUILDING
TO 3 TO 5 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES 3 TO
5 FEET.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTHWEST IN
THE AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH
SNOW. WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. WAVES 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS BACKING NORTH. SNOW
LIKELY...THEN A CHANCE OF SNOW. FREEZING SPRAY. WAVES BUILDING TO
4 TO 7 FEET.

$$

LSZ263-200515-
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-
404 PM EST SUN FEB 19 2017

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

$$

LSZ264-200515-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
404 PM EST SUN FEB 19 2017

...GALE WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

.LATE THIS AFTERNOON...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET.
.MONDAY...SOUTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING...THEN RAIN SHOWERS IN THE AFTERNOON. WAVES BUILDING TO
7 TO 11 FEET.
.MONDAY NIGHT...SOUTH GALES TO 40 KNOTS BECOMING WEST 20 TO
30 KNOTS AFTER MIDNIGHT. RAIN SHOWERS IN THE EVENING...THEN A
CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 2 TO 4 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...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING EAST IN THE
AFTERNOON. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW.
WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...EAST WINDS 20 TO 30 KNOTS BECOMING NORTHEAST GALES TO
35 KNOTS. SNOW LIKELY. FREEZING SPRAY. WAVES BUILDING TO 6 TO
9 FEET.

$$

LSZ265-200515-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
404 PM EST SUN FEB 19 2017

...GALE WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

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

$$

LSZ266-200515-
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-
404 PM EST SUN FEB 19 2017

...GALE WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

.LATE THIS AFTERNOON...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET.
.MONDAY...SOUTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. A CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES BUILDING TO 7 TO 11 FEET.
.MONDAY NIGHT...SOUTH GALES TO 40 KNOTS BECOMING WEST 20 TO
30 KNOTS AFTER MIDNIGHT. RAIN SHOWERS IN THE EVENING...THEN A
CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. WAVES SUBSIDING TO 2 TO 4 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...SOUTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES CALM
TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...EAST WINDS 20 TO 30 KNOTS BECOMING NORTHEAST GALES TO
35 KNOTS. SNOW. FREEZING SPRAY. WAVES BUILDING TO 7 TO 10 FEET.

$$

LSZ267-200515-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
404 PM EST SUN FEB 19 2017

...GALE WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

.LATE THIS AFTERNOON...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. A CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. WAVES BUILDING TO 5 TO 8 FEET.
.MONDAY NIGHT...SOUTHEAST GALES TO 40 KNOTS BECOMING SOUTH GALES
TO 35 KNOTS AFTER MIDNIGHT. RAIN SHOWERS. 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. A SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING. WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST IN THE
AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY...NORTH WINDS 15 TO 25 KNOTS VEERING NORTHEAST. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS. SNOW. WAVES BUILDING TO 4 TO 7 FEET.

$$

LSZ261-200515-
MAFOR 1922/
SUPERIOR WEST 15220 11320 11326. CHANCE OF RAIN SHOWERS LATE
MONDAY MORNING. WAVES 1 TO 4 FEET.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11200 11210
11320 12330 12340 11350. CHANCE OF RAIN SHOWERS MONDAY AFTERNOON.
WAVES 1 TO 4 FEET TONIGHT BUILDING TO 8 TO 11 FEET MONDAY.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11200 11300
11310 11320 12330 12340. CHANCE OF RAIN SHOWERS MONDAY AFTERNOON.
WAVES 1 TO 3 FEET TONIGHT BUILDING TO 4 TO 7 FEET MONDAY.

SUPERIOR EAST...GALE WARNING IN EFFECT...11800 11100 11210 12320
11330 12340. WAVES 1 TO 2 FEET TONIGHT BUILDING TO 5 TO 8 FEET
MONDAY.

$$

KLUBER



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