Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 010850
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
350 AM EST WED MAR 1 2017

.SYNOPSIS...A 29.4 INCH LOW PRESSURE OVER SOUTHEAST ONTARIO THIS
MORNING WILL MOVE NORTHEAST INTO THE CANADIAN MARITIMES ON THURSDAY
WHILE DEEPENING TO 29.0 INCHES...LEAVING A LOW PRESSURE TROUGH
AVERAGING 30.1 INCHES INTO THE WESTERN GREAT LAKES. A 30.6 INCH HIGH
PRESSURE OVER SOUTH CENTRAL CANADA ON THURSDAY MORNING WILL THEN
BUILD SOUTHEAST...REACHING THE WESTERN GREAT LAKES ON FRIDAY AND THE
MID ATLANTIC STATES ON SATURDAY. AS THIS HIGH DRIFTS OFF THE EAST
COAST ON SUNDAY...A 29.4 INCH LOW PRESSURE MOVING OVER THE ROCKY
MOUNTAINS NEAR THE CANADIAN BORDER ON SATURDAY WILL MOVE INTO
NORTHWEST ONTARIO ON SUNDAY.

LSZ162-011700-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
350 AM EST WED MAR 1 2017 /250 AM CST WED MAR 1 2017/

.EARLY THIS MORNING...NORTHEAST WINDS 20 TO 30 KNOTS. FREEZING
SPRAY. A SLIGHT CHANCE OF SNOW. WAVES 7 TO 10 FEET.
.TODAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. A
SLIGHT CHANCE OF SNOW IN THE MORNING. WAVES SUBSIDING TO 3 TO
5 FEET.
.TONIGHT...NORTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 1 TO
3 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 10 TO 20 KNOTS BACKING SOUTHEAST. A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING EAST. A CHANCE OF
RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ263-011700-
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-
350 AM EST WED MAR 1 2017

...GALE WARNING IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...

.EARLY THIS MORNING...NORTHEAST GALES TO 35 KNOTS. FREEZING
SPRAY. A SLIGHT CHANCE OF SNOW. WAVES 8 TO 11 FEET.
.TODAY...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW IN THE
MORNING. FREEZING SPRAY. WAVES SUBSIDING TO 3 TO 6 FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING
TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS IN THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN AND SNOW
SHOWERS. WAVES BUILDING TO 3 TO 6 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO 20 KNOTS.
A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ264-011700-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
350 AM EST WED MAR 1 2017

...GALE WARNING IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...

.EARLY THIS MORNING...NORTHEAST GALES TO 35 KNOTS. HEAVY FREEZING
SPRAY. A SLIGHT CHANCE OF SNOW. WAVES 7 TO 10 FEET.
.TODAY...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 20 TO
30 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW IN THE
MORNING. HEAVY FREEZING SPRAY. WAVES SUBSIDING TO 4 TO 7 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A SLIGHT
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO
3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING
TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST IN THE
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW SHOWERS.
A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 6 TO 9 FEET...THEN
SUBSIDING TO 4 TO 7 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST. A CHANCE
OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ265-011700-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
350 AM EST WED MAR 1 2017

...GALE WARNING IN EFFECT UNTIL 1 PM EST THIS AFTERNOON...

.EARLY THIS MORNING...NORTHEAST GALES TO 35 KNOTS. FREEZING
SPRAY. A CHANCE OF SNOW. WAVES 6 TO 9 FEET BUILDING TO 7 TO
10 FEET.
.TODAY...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH 20 TO
30 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW.
WAVES BUILDING TO 8 TO 11 FEET...THEN SUBSIDING TO 5 TO 8 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A CHANCE
OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. SNOW SHOWERS
LIKELY. WAVES BUILDING TO 3 TO 5 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...WEST WINDS 10 TO 20 KNOTS BACKING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES BUILDING TO
4 TO 7 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-011700-
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-
350 AM EST WED MAR 1 2017

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

.EARLY THIS MORNING...NORTHEAST GALES TO 35 KNOTS. FREEZING
SPRAY. A CHANCE OF SNOW. WAVES 7 TO 10 FEET.
.TODAY...NORTHEAST GALES TO 35 KNOTS BECOMING NORTH IN THE
AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW. WAVES BUILDING TO 9
TO 12 FEET.
.TONIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A CHANCE
OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 2 TO 4 FEET.
.THURSDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS IN THE EVENING. SNOW SHOWERS LIKELY AFTER
MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING...
THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING
TO 1 TO 3 FEET.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN SHOWERS.
WAVES BUILDING TO 5 TO 9 FEET.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ267-011700-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
350 AM EST WED MAR 1 2017

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

.EARLY THIS MORNING...NORTHEAST GALES TO 35 KNOTS. FREEZING
SPRAY. A SLIGHT CHANCE OF SNOW. WAVES 6 TO 9 FEET BUILDING TO
7 TO 10 FEET.
.TODAY...NORTHEAST GALES TO 35 KNOTS. FREEZING SPRAY. A CHANCE OF
SNOW. WAVES SUBSIDING TO 6 TO 9 FEET.
.TONIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A SLIGHT
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO
3 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH
AFTER MIDNIGHT. FREEZING SPRAY. SNOW SHOWERS LIKELY IN THE
EVENING. A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES BUILDING
TO 3 TO 6 FEET.
.FRIDAY...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING...
THEN A CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES SUBSIDING
TO 1 TO 3 FEET.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.SATURDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHEAST 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
6 FEET.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.

$$

LSZ261-011700-
MAFOR 0110/
SUPERIOR WEST...GALE WARNING IN EFFECT...13140 11130 14810.
FREEZING SPRAY THIS MORNING. WAVES 6 TO 10 FEET SUBSIDING TO 5 TO
7 FEET TODAY. WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 3 FEET TONIGHT.

SUPERIOR NORTH CENTRAL...GALE WARNING AND HEAVY FREEZING SPRAY
WARNING IN EFFECT...13152 11140 12830 11820 11810. FREEZING SPRAY
TONIGHT. WAVES 7 TO 10 FEET SUBSIDING TO 5 TO 8 FEET TODAY. WAVES
4 TO 7 FEET SUBSIDING TO 2 TO 4 FEET TONIGHT.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...13150 13840
11830 11820. FREEZING SPRAY THROUGH THIS EVENING. CHANCE OF SNOW
THIS MORNING. WAVES 7 TO 11 FEET SUBSIDING TO 6 TO 9 FEET TODAY.
WAVES 5 TO 8 FEET SUBSIDING TO 2 TO 4 FEET TONIGHT.


SUPERIOR EAST...GALE WARNING IN EFFECT...11150 12152 11150 11850
12840 11820. FREEZING SPRAY. CHANCE OF SNOW THROUGH EARLY AFTERNOON
TODAY. WAVES 7 TO 11 FEET TODAY. WAVES 5 TO 8 FEET SUBSIDING TO 2
TO 4 FEET TONIGHT.

$$

JLA


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