Great Lakes Forecast
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378
FZUS63 KMQT 071459
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
959 AM EST WED DEC 7 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.4 INCH LOW PRESSURE OVER NORTHERN ONTARIO WILL
REACH JAMES BAY BY THIS EVENING. A PAIR OF ASSOCIATED TROUGHS WILL
CROSS LAKE SUPERIOR THIS AFTERNOON AND TONIGHT. THE LOW WILL CONTINUE
EASTWARD TO THE CANADIAN MARITIMES THROUGH FRIDAY WHILE A 30.7 INCH
HIGH PRESSURE RIDGE BUILDS ACROSS THE CENTRAL PLAINS. THE RIDGE WILL
CROSS THE UPPER GREAT LAKES FRIDAY NIGHT INTO SATURDAY WHILE
WEAKENING TO 30.3 INCHES. A TROUGH OF LOW PRESSURE AVERAGING 30.0
INCHES WILL THEN SLIDE FROM THE PLAINS INTO THE UPPER GREAT LAKES
REGION SATURDAY NIGHT INTO SUNDAY.

LSZ162-072300-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
959 AM EST WED DEC 7 2016 /859 AM CST WED DEC 7 2016/

...GALE WARNING IN EFFECT UNTIL 7 PM EST /6 PM CST/ THIS
EVENING...

.REST OF TODAY...WEST GALES TO 40 KNOTS. SCATTERED SNOW SHOWERS.
WAVES 6 TO 10 FEET.
.TONIGHT...WEST GALES TO 35 KNOTS BECOMING NORTH 20 TO 30 KNOTS
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET...THEN BUILDING TO 3 TO 5 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 3 TO 6 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING EAST. SNOW SHOWERS
LIKELY. WAVES CALM TO 2 FEET.
.SUNDAY...NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ263-072300-
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-
959 AM EST WED DEC 7 2016

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.REST OF TODAY...WEST GALES TO 40 KNOTS. SNOW SHOWERS THROUGH
NOON...THEN SCATTERED SNOW SHOWERS IN THE AFTERNOON. WAVES 10 TO 14
FEET.
.TONIGHT...WEST GALES TO 35 KNOTS BECOMING NORTH 20 TO 30 KNOTS
AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE EVENING...THEN A
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO
6 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY. WAVES SUBSIDING TO
2 TO 4 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING...THEN A CHANCE OF
SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. SNOW SHOWERS
LIKELY IN THE EVENING...THEN A CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS...THEN SNOW SHOWERS LIKELY.
WAVES CALM TO 2 FEET.
.SUNDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. A CHANCE
OF SNOW SHOWERS. WAVES BUILDING TO 2 TO 4 FEET.

$$

LSZ264-072300-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
959 AM EST WED DEC 7 2016

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.REST OF TODAY...WEST GALES TO 40 KNOTS. SNOW SHOWERS THROUGH
NOON...THEN SCATTERED SNOW SHOWERS IN THE AFTERNOON. WAVES 10 TO 14
FEET SUBSIDING TO 9 TO 12 FEET.
.TONIGHT...NORTHWEST GALES TO 35 KNOTS VEERING NORTH 20 TO 30 KNOTS
AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE EVENING...THEN A CHANCE
OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO 7 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS. SNOW SHOWERS LIKELY. WAVES
BUILDING TO 5 TO 8 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. SNOW SHOWERS
LIKELY. WAVES SUBSIDING TO 3 TO 5 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. SNOW SHOWERS LIKELY. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS. SNOW SHOWERS LIKELY. WAVES BUILDING TO 1 TO
3 FEET.
.SUNDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. A CHANCE
OF SNOW SHOWERS. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING
TO 1 TO 3 FEET.

$$

LSZ265-072300-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
959 AM EST WED DEC 7 2016

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...SOUTHWEST GALES TO 40 KNOTS VEERING WEST IN THE
AFTERNOON. SCATTERED SNOW SHOWERS. WAVES 6 TO 10 FEET.
.TONIGHT...WEST GALES TO 35 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT. SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS. SNOW SHOWERS. WAVES
BUILDING TO 5 TO 8 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS. SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. SNOW SHOWERS
LIKELY. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. SNOW SHOWERS LIKELY. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.

$$

LSZ266-072300-
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-
959 AM EST WED DEC 7 2016

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...SOUTHWEST GALES TO 40 KNOTS VEERING WEST IN THE
AFTERNOON. SCATTERED SNOW SHOWERS. WAVES 9 TO 12 FEET BUILDING TO
10 TO 14 FEET.
.TONIGHT...WEST GALES TO 35 KNOTS VEERING NORTHWEST AFTER MIDNIGHT.
SNOW SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS. SNOW SHOWERS. WAVES
BUILDING TO 6 TO 9 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. SNOW SHOWERS. WAVES SUBSIDING TO 3 TO
6 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS. SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. SNOW SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS...THEN SNOW SHOWERS
LIKELY. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET...THEN BUILDING TO 3 TO 5 FEET.

$$

LSZ267-072300-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
959 AM EST WED DEC 7 2016

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...SOUTHWEST GALES TO 35 KNOTS VEERING WEST IN THE
AFTERNOON. SCATTERED SNOW SHOWERS. WAVES 5 TO 8 FEET BUILDING TO
9 TO 12 FEET.
.TONIGHT...WEST GALES TO 40 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS AFTER MIDNIGHT. SNOW SHOWERS. WAVES SUBSIDING TO 4 TO
7 FEET.
.THURSDAY...NORTH WINDS 20 TO 30 KNOTS. SNOW SHOWERS. WAVES BUILDING
TO 5 TO 8 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. SNOW SHOWERS. WAVES SUBSIDING TO 3 TO
5 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS. SNOW SHOWERS LIKELY. WAVES
SUBSIDING TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. SNOW SHOWERS. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 3 TO 5 FEET.

$$
LSZ261-072300-
MAFOR 0716/
SUPERIOR WEST...GALE WARNING IN EFFECT...14650 11740 11730 12840.
SCATTERED SNOW SHOWERS. WAVES 8 TO 12 FEET THIS AFTERNOON. WAVES 6
TO 10 FEET SUBSIDING TO 3 TO 6 FEET TONIGHT. WAVES 3 TO 6 FEET
THURSDAY MORNING.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...13650 11750
11740 12840 11847. SCATTERED SNOW SHOWERS. WAVES 9 TO 13 FEET
SUBSIDING TO 8 TO 11 FEET THIS AFTERNOON. WAVES 8 TO 11 FEET
SUBSIDING TO 5 TO 9 FEET TONIGHT. WAVES 5 TO 8 FEET THURSDAY
MORNING.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...13650 12657
11747 12847. SCATTERED SNOW SHOWERS THIS AFTERNOON. WAVES 6 TO 10
FEET SUBSIDING TO 5 TO 8 FEET TONIGHT INTO THURSDAY MORNING.

SUPERIOR EAST...GALE WARNING IN EFFECT...11550 11650 13657 11747
11837 11847. SCATTERED SNOW SHOWERS THIS AFTERNOON. WAVES 8 TO 12
FEET THIS AFTERNOON SUBSIDING TO 6 TO 10 FEET TONIGHT AND TO 5 TO 8
FEET THURSDAY MORNING.

$$

JLA



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