Great Lakes Forecast
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000
FZUS63 KMQT 122107
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
407 PM EST THU JAN 12 2017

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.1 INCH RIDGE JUST EAST OF LAKE SUPERIOR WILL TRACK
EASTWARD AS A 29.8 INCH LOW PRESSURE PASSES JUST NORTH OF LAKE
SUPERIOR THROUGH TONIGHT. A 30.7 INCH HIGH PRESSURE BUILDING ACROSS
THE NORTHERN PLAINS THIS AFTERNOON WILL MOVE OVER THE UPPER GREAT
LAKES ON FRIDAY. THE RIDGE WILL REACH THE LOWER GREAT LAKES ON
SATURDAY AS A 30.4 INCH TROUGH OVER NORTHERN ONTARIO BRUSHES LAKE
SUPERIOR. A 30.5 INCH RIDGE WILL THEN BUILD ACROSS THE UPPER
MISSISSIPPI RIVER VALLEY SATURDAY AND GREAT LAKES ON SUNDAY BEFORE
WEAKENING ON MONDAY. 29.8 INCH LOW PRESSURE WILL THEN TRACK
NORTHEASTWARD INTO THE UPPER GREAT LAKES REGION ON TUESDAY.

LSZ162-130515-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
407 PM EST THU JAN 12 2017 /307 PM CST THU JAN 12 2017/

...GALE WARNING IN EFFECT UNTIL 1 AM EST /MIDNIGHT CST/ FRIDAY...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 11 PM EST /10 PM
CST/ THIS EVENING...

.LATE THIS AFTERNOON...WEST GALES TO 40 KNOTS. HEAVY FREEZING
SPRAY. WAVES 6 TO 9 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY IN THE EVENING. A
SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
MORNING. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST.
WAVES CALM TO 2 FEET.

$$

LSZ263-130515-
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-
407 PM EST THU JAN 12 2017

...GALE WARNING IN EFFECT UNTIL 1 AM EST FRIDAY...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH FRIDAY
MORNING...

.LATE THIS AFTERNOON...WEST GALES TO 45 KNOTS. HEAVY FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES 11 TO 15 FEET.
.TONIGHT...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY AFTER MIDNIGHT. A
SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO
4 TO 7 FEET.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. A
SLIGHT CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES SUBSIDING TO
2 TO 4 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES 2 TO
4 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. WAVES
CALM TO 2 FEET.

$$

LSZ264-130515-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
407 PM EST THU JAN 12 2017

...GALE WARNING IN EFFECT UNTIL 1 AM EST FRIDAY...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH FRIDAY
MORNING...

.LATE THIS AFTERNOON...WEST GALES TO 45 KNOTS WITH A FEW STORM FORCE
GUSTS TO 50 KNOTS. HEAVY FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES
11 TO 15 FEET.
.TONIGHT...NORTHWEST GALES TO 45 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST IN THE
AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. FREEZING
SPRAY AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET.
.SATURDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A SLIGHT CHANCE OF
SNOW SHOWERS. WAVES BUILDING TO 5 TO 8 FEET...THEN SUBSIDING TO
2 TO 4 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST.
WAVES CALM TO 2 FEET.

$$

LSZ265-130515-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
407 PM EST THU JAN 12 2017

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH FRIDAY
MORNING...
...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.LATE THIS AFTERNOON...WEST GALES TO 45 KNOTS. HEAVY FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES 5 TO 9 FEET.
.TONIGHT...WEST GALES TO 45 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY. SNOW SHOWERS
LIKELY IN THE EVENING. A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
WAVES BUILDING TO 7 TO 10 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE OF
RAIN AND SNOW. A CHANCE OF FREEZING RAIN. WAVES CALM TO 2 FEET.

$$

LSZ266-130515-
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-
407 PM EST THU JAN 12 2017

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH FRIDAY
MORNING...
...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.LATE THIS AFTERNOON...WEST GALES TO 45 KNOTS. HEAVY FREEZING
SPRAY. A CHANCE OF SNOW SHOWERS. WAVES 10 TO 14 FEET BUILDING TO
11 TO 15 FEET.
.TONIGHT...NORTHWEST GALES TO 40 KNOTS. A FEW STORM FORCE GUSTS
TO 50 KNOTS IN THE EVENING. HEAVY FREEZING SPRAY. SNOW SHOWERS
LIKELY. WAVES BUILDING TO 12 TO 17 FEET...THEN SUBSIDING TO 6 TO 9
FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 5 TO
15 KNOTS IN THE AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 3 TO 6 FEET.
.SATURDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 5 TO 8 FEET...THEN SUBSIDING TO 3 TO
6 FEET.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. WAVES
SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE OF
RAIN AND SNOW. A CHANCE OF FREEZING RAIN. WAVES CALM TO 2 FEET.

$$

LSZ267-130515-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
407 PM EST THU JAN 12 2017

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 PM EST THIS
EVENING THROUGH FRIDAY MORNING...

.LATE THIS AFTERNOON...WEST GALES TO 40 KNOTS. FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES 4 TO 7 FEET BUILDING TO 7 TO
10 FEET.
.TONIGHT...WEST GALES TO 45 KNOTS BECOMING NORTHWEST GALES TO
40 KNOTS AFTER MIDNIGHT. A FEW STORM FORCE GUSTS TO 50 KNOTS
IN THE EVENING. HEAVY FREEZING SPRAY. SNOW SHOWERS LIKELY. WAVES
BUILDING TO 15 TO 20 FEET...THEN SUBSIDING TO 7 TO 10 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 5 TO
15 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. SNOW
SHOWERS LIKELY IN THE MORNING...THEN A CHANCE OF SNOW SHOWERS IN
THE AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 3 TO 5 FEET.
.SATURDAY...SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO 7 FEET...THEN
SUBSIDING TO 3 TO 6 FEET.
.SATURDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTHEAST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN AND SNOW.
A CHANCE OF FREEZING RAIN. WAVES CALM TO 2 FEET.

$$

LSZ261-130515-
MAFOR 1222/
SUPERIOR WEST...GALE AND HEAVY FREEZING SPRAY WARNINGS IN
EFFECT...11662 11752 11742 11732 11720 11710 11610 11510. HEAVY
FREEZING SPRAY EARLY THIS EVENING THROUGH TONIGHT. CHANCE OF SNOW
SHOWERS TONIGHT. WAVES 8 TO 11 FEET SUBSIDING TO 1 TO 5 FEET
TONIGHT. WAVES LESS THAN 2 FEET FRIDAY.

SUPERIOR NORTH CENTRAL...GALE AND HEAVY FREEZING SPRAY WARNINGS IN
EFFECT...11662 19672 11762 11757 11742 11732 11720 11710 11610.
HEAVY FREEZING SPRAY THROUGH MID FRIDAY MORNING. CHANCE OF SNOW
SHOWERS THIS EVENING THROUGH MID FRIDAY MORNING. WAVES 10 TO 15 FEET
SUBSIDING TO 6 TO 9 FEET TONIGHT. WAVES SUBSIDING TO 1 TO 6 FEET
FRIDAY.

SUPERIOR SOUTH CENTRAL...GALE AND HEAVY FREEZING SPRAY WARNINGS IN
EFFECT...11662 11667 12757 11742 11732 11620 11610. HEAVY FREEZING
SPRAY THROUGH MID FRIDAY MORNING. CHANCE OF SNOW SHOWERS THIS
EVENING THROUGH FRIDAY MORNING. WAVES 5 TO 8 FEET BUILDING TO 9 TO
13 FEET...THEN SUBSIDING TO 6 TO 9 FEET TONIGHT. WAVES 4 TO 7 FEET
SUBSIDING TO 1 TO 3 FEET FRIDAY.

SUPERIOR EAST...GALE AND HEAVY FREEZING SPRAY WARNINGS IN
EFFECT...11660 19670 11677 11767 11757 11747 11732 11720 11610.
HEAVY FREEZING SPRAY TONIGHT THROUGH FRIDAY MORNING. CHANCE OF SNOW
SHOWERS FRIDAY. WAVES 6 TO 9 FEET BUILDING TO 14 TO 18 FEET...THEN
SUBSIDING TO 10 TO 13 FEET TONIGHT. WAVES 7 TO 10 FEET SUBSIDING TO 3
TO 5 FEET FRIDAY.

$$

JS



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