Great Lakes Forecast
Issued by NWS

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284
FZUS63 KMQT 142053
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
353 PM EST SAT JAN 14 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.3 INCH TROUGH OVER FAR EASTERN ONTARIO LATE THIS
AFTERNOON WILL MOVE EASTWARD THROUGH TONIGHT. 30.6 INCH HIGH PRESSURE
WILL DRIFT EASTWARD ACROSS THE SOUTHERN GREAT LAKES THROUGH SUNDAY AS
A 30.0 INCH TROUGH EDGES SOUTHEASTWARD INTO NORTHERN ONTARIO. THE
RIDGE OVER THE GREAT LAKES WILL THEN WEAKEN TO 30.1 INCHES THROUGH
MONDAY. 29.6 INCH LOW PRESSURE WILL TRACK NORTHEASTWARD INTO THE
UPPER GREAT LAKES REGION ON TUESDAY. A 29.9 INCH RIDGE WILL FOLLOW
ACROSS THE GREAT LAKES WEDNESDAY INTO THURSDAY AS A 29.3 INCH TROUGH
DEVELOPS ACROSS THE PLAINS.

LSZ162-150500-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
353 PM EST SAT JAN 14 2017 /253 PM CST SAT JAN 14 2017/

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

$$

LSZ263-150500-
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 SAT JAN 14 2017

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. WAVES 2 TO
4 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO 7 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
1 TO 3 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH IN THE
AFTERNOON. A CHANCE OF RAIN SHOWERS...FREEZING RAIN...SNOW
SHOWERS AND SLEET. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.

$$

LSZ264-150500-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
353 PM EST SAT JAN 14 2017

.LATE THIS AFTERNOON...WEST WINDS 15 TO 25 KNOTS. WAVES 2 TO
4 FEET.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST AFTER
MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET.
.SUNDAY NIGHT...WEST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO
35 KNOTS THROUGH MIDNIGHT. WAVES BUILDING TO 7 TO 10 FEET...THEN
SUBSIDING TO 4 TO 7 FEET.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS...POSSIBLY MIXED WITH RAIN...
FREEZING RAIN AND SLEET. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-150500-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
353 PM EST SAT JAN 14 2017

.LATE THIS AFTERNOON...WEST WINDS 15 TO 25 KNOTS. WAVES 3 TO
5 FEET.
.TONIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH IN THE
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTH IN THE
AFTERNOON. A CHANCE OF FREEZING RAIN IN THE MORNING. A CHANCE OF
RAIN AND SNOW SHOWERS...POSSIBLY MIXED WITH SLEET. WAVES CALM TO
2 FEET.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-150500-
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 SAT JAN 14 2017

.LATE THIS AFTERNOON...NORTHWEST WINDS 15 TO 25 KNOTS. FREEZING
SPRAY. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FEET SUBSIDING
TO 3 TO 6 FEET.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
EVENING. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO 7 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH IN THE
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH IN THE
AFTERNOON. A CHANCE OF FREEZING RAIN IN THE MORNING. A CHANCE OF
RAIN SHOWERS...POSSIBLY MIXED WITH SNOW AND SLEET. WAVES CALM TO
2 FEET.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM
TO 2 FEET.

$$

LSZ267-150500-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
353 PM EST SAT JAN 14 2017

.LATE THIS AFTERNOON...NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 6 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH IN THE
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY NIGHT...SOUTH WINDS 15 TO 25 KNOTS BACKING SOUTHEAST
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF FREEZING RAIN IN THE
MORNING. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SLEET AND
SNOW SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ261-150500-
MAFOR 1422/
SUPERIOR WEST 11620 13610 11520 12530 11540. WAVES 1 TO 4 FEET
BUILDING TO 4 TO 7 FEET SUNDAY.

SUPERIOR NORTH CENTRAL 11630 12720 11610 11620 12530 11540. WAVES
2 TO 4 FEET BUILDING TO 5 TO 8 FEET SUNDAY.

SUPERIOR SOUTH CENTRAL 12630 12620 11610 13520. WAVES 1 TO 5 FEET.

SUPERIOR EAST 12730 11720 11710 11610 12520 11530. FREEZING SPRAY
EARLY THIS EVENING. CHANCE OF SNOW SHOWERS THIS EVENING. WAVES 2
TO 7 FEET.

$$

PETRO



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