Great Lakes Forecast
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000
FZUS63 KMQT 291504
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1004 AM EST THU JAN 29 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...29.8 INCH LOW PRESSURE SYSTEM OVER EASTERN LAKE SUPERIOR
THIS MORNING WILL MOVE INTO QUEBEC THIS AFTERNOON WHILE ANOTHER 29.7
INCH LOW NEAR CHICAGO SHIFTS EAST INTO NEW ENGLAND ON FRIDAY MORNING.
MEANWHILE...30.7 INCH HIGH PRESSURE OVER SOUTH CENTRAL CANADA WILL
MOVE SOUTHEAST INTO MINNESOTA ON FRIDAY. AS THIS HIGH DRIFTS INTO THE
OHIO RIVER VALLEY ON SATURDAY...A LOW PRESSURE TROUGH AVERAGING 30.1
INCHES WILL SLIDE ACROSS THE UPPER GREAT LAKES. EXPECT 30.8 INCH HIGH
PRESSURE OVER CENTRAL CANADA ON SATURDAY TO MOVE SOUTHEAST INTO THE
NORTHERN PLAINS ON SUNDAY...AND THE MID MISSISSIPPI RIVER VALLEY ON
MONDAY.

LSZ162-292315-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1004 AM EST THU JAN 29 2015

.REST OF TODAY...NORTHWEST WINDS 20 TO 30 KNOTS. ISOLATED SNOW
SHOWERS IN THE AFTERNOON. WAVES 3 TO 6 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. ISOLATED SNOW SHOWERS. WAVES SUBSIDING
TO 1 TO 3 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH IN THE
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES 1 TO 3 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.

$$

LSZ263-292315-
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-
1004 AM EST THU JAN 29 2015

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

.REST OF TODAY...NORTH GALES TO 35 KNOTS. FREEZING SPRAY LATE IN
THE MORNING. HEAVY FREEZING SPRAY IN THE AFTERNOON. ISOLATED SNOW
SHOWERS IN THE AFTERNOON. WAVES 3 TO 5 FEET BUILDING TO 5 TO
8 FEET.
.TONIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY IN THE EVENING.
ISOLATED SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF SNOW. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 20 TO
30 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW. WAVES BUILDING TO
3 TO 5 FEET.
.SATURDAY NIGHT...NORTH 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...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.

$$

LSZ264-292315-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1004 AM EST THU JAN 29 2015

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 1 PM EST THIS
AFTERNOON THROUGH FRIDAY MORNING...

.REST OF TODAY...NORTH GALES TO 35 KNOTS. HEAVY FREEZING SPRAY.
ISOLATED SNOW SHOWERS IN THE AFTERNOON. WAVES 3 TO 6 FEET
BUILDING TO 10 TO 14 FEET...THEN SUBSIDING TO 9 TO 12 FEET.
.TONIGHT...NORTH GALES TO 35 KNOTS DIMINISHING TO 15 TO 25 KNOTS
AFTER MIDNIGHT. HEAVY FREEZING SPRAY. SCATTERED 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 10 TO 20 KNOTS BECOMING WEST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW IN THE EVENING...
THEN SNOW LIKELY AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH GALES
TO 35 KNOTS IN THE AFTERNOON. SNOW LIKELY. HEAVY FREEZING SPRAY
IN THE AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING
TO 3 TO 6 FEET.
.SATURDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY IN THE EVENING. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 2 TO 4 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. SNOW SHOWERS LIKELY...THEN A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN
BUILDING TO 2 TO 4 FEET.

$$

LSZ265-292315-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1004 AM EST THU JAN 29 2015

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

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

$$

LSZ266-292315-
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-
1004 AM EST THU JAN 29 2015

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 1 PM EST THIS
AFTERNOON THROUGH FRIDAY MORNING...

.REST OF TODAY...NORTHWEST GALES TO 40 KNOTS BECOMING NORTH GALES
TO 45 KNOTS IN THE AFTERNOON. FREEZING SPRAY LATE IN THE MORNING.
HEAVY FREEZING SPRAY IN THE AFTERNOON. ISOLATED SNOW SHOWERS.
WAVES 3 TO 5 FEET BUILDING TO 10 TO 14 FEET.
.TONIGHT...NORTH GALES TO 40 KNOTS. HEAVY FREEZING SPRAY.
SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO
20 KNOTS IN THE AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW IN THE EVENING...
THEN SNOW LIKELY AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH GALES
TO 35 KNOTS IN THE AFTERNOON. SNOW LIKELY. HEAVY FREEZING SPRAY
IN THE AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING
TO 3 TO 6 FEET.
.SATURDAY NIGHT...NORTH GALES TO 35 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY IN THE EVENING.
SNOW SHOWERS LIKELY. WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KNOTS. SNOW SHOWERS LIKELY.
WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS. SNOW SHOWERS LIKELY...THEN A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 5 FEET.

$$

LSZ267-292315-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1004 AM EST THU JAN 29 2015

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 1 PM EST THIS
AFTERNOON THROUGH FRIDAY MORNING...

.REST OF TODAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH
GALES TO 40 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS. HEAVY
FREEZING SPRAY IN THE AFTERNOON. WAVES 1 TO 3 FEET SUBSIDING TO
CALM TO 2 FEET...THEN BUILDING TO 10 TO 14 FEET.
.TONIGHT...NORTH GALES TO 40 KNOTS DIMINISHING TO 20 TO 30 KNOTS
AFTER MIDNIGHT. HEAVY FREEZING SPRAY. SCATTERED SNOW SHOWERS.
WAVES SUBSIDING TO 4 TO 7 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY. WAVES SUBSIDING
TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
IN THE EVENING...THEN SNOW LIKELY AFTER MIDNIGHT. WAVES BUILDING
TO 1 TO 3 FEET.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS IN THE AFTERNOON. SNOW. WAVES BUILDING TO 3 TO 5 FEET.
.SATURDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. HEAVY FREEZING SPRAY IN THE EVENING. A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET...THEN
SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. SNOW
SHOWERS LIKELY. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING
TO 2 TO 4 FEET.
.MONDAY...NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST. SNOW
SHOWERS LIKELY...THEN A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO
3 TO 5 FEET.

$$
LSZ261-292315-
MAFOR 2916/
SUPERIOR WEST...GALE WARNING AND HEAVY FREEZING SPRAY WARNING IN
EFFECT...12752 12842 11830 11730 11720 11710. HEAVY FREEZING SPRAY
AFTER MIDNIGHT TONIGHT. WAVES 3 TO 7 FEET SUBSIDING TO 1 TO 4 FEET
TONIGHT AND FRIDAY MORNING.

SUPERIOR NORTH CENTRAL...GALE WARNING AND HEAVY FREEZING SPRAY
WARNING IN EFFECT...14852 11852 11842 11730 11720. HEAVY FREEZING
SPRAY LATE THIS MORNING AND TONIGHT. SCATTERED SNOW SHOWERS TONIGHT.
CHANCE OF SNOW SHOWERS FRIDAY MORNING. WAVES 7 TO 12 FEET SUBSIDING
TO 4 TO 7 FEET TONIGHT. WAVES 2 TO 5 FEET FRIDAY MORNING.

SUPERIOR SOUTH CENTRAL...GALE WARNING AND HEAVY FREEZING SPRAY
WARNING IN EFFECT...11752 12762 12852 12742 11730. HEAVY FREEZING
SPRAY AND SCATTERED SNOW SHOWERS AFTER MIDNIGHT TONIGHT. CHANCE OF
SNOW SHOWERS FRIDAY MORNING. WAVES 3 TO 6 FEET BUILDING TO 9 TO 13
FEET THIS AFTERNOON. WAVES SUBSIDING TO 3 TO 8 FEET TONIGHT AND
FRIDAY MORNING.

SUPERIOR EAST...GALE WARNING AND HEAVY FREEZING SPRAY WARNING IN
EFFECT...11761 11860 11862 12852 11842 12837. HEAVY FREEZING SPRAY
AND SCATTERED SNOW SHOWERS AFTER MIDNIGHT TONIGHT. HEAVY FREEZING
SPRAY FRIDAY MORNING. WAVES 1 TO 3 FEET BUILDING TO 10 TO 14 FEET
THIS AFTERNOON. WAVES SUBSIDING TO 6 TO 9 FEET TONIGHT. WAVES 3 TO 7
FEET FRIDAY MORNING.

$$

JS


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