Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 231450
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
950 AM EST MON FEB 23 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.9 INCH ARCTIC HIGH PRESSURE CENTERED OVER IOWA THIS
MORNING WILL DRIFT SOUTHEAST INTO THE OHIO VALLEY TONIGHT AND OFF THE
MID ATLANTIC COAST ON TUESDAY WHILE WEAKENING TO 30.3 INCHES. A 29.3
INCH LOW PRESSURE CENTER DROPPING INTO FAR NORTHWEST ONTARIO THIS
EVENING WILL THEN SLIDE TO NEAR JAMES BAY BY TUESDAY
EVENING...DRAGGING A COLD FRONT ACROSS LAKE SUPERIOR ON TUESDAY. AS
THE LOW DRIFTS INTO QUEBEC ON WEDNESDAY...EXPECT A 30.8 INCH HIGH
PRESSURE OVER CENTRAL CANADA TO MOVE SOUTHEAST AND INTO THE NORTHERN
PLAINS ON WEDNESDAY NIGHT. THIS HIGH WILL CONTINUE SOUTHEAST THROUGH
THE UPPER MISSISSIPPI RIVER VALLEY ON THURSDAY AND INTO THE OHIO
RIVER VALLEY BY LATE FRIDAY.

LSZ162-232300-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
950 AM EST MON FEB 23 2015

...GALE WARNING IN EFFECT FROM 4 PM EST /3 PM CST/ THIS AFTERNOON
THROUGH TUESDAY MORNING...

.REST OF TODAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
GALES TO 35 KNOTS IN THE AFTERNOON.
.TONIGHT...SOUTHWEST GALES TO 40 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. ISOLATED SNOW
SHOWERS AFTER MIDNIGHT.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

LSZ263-232300-
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-
950 AM EST MON FEB 23 2015

...GALE WARNING IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH
TUESDAY MORNING...

.REST OF TODAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
GALES TO 35 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS IN THE
AFTERNOON.
.TONIGHT...SOUTHWEST GALES TO 40 KNOTS. A CHANCE OF SNOW.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. SNOW.
.TUESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. ISOLATED SNOW SHOWERS.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

LSZ264-232300-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
950 AM EST MON FEB 23 2015

...GALE WARNING IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH
TUESDAY MORNING...

.REST OF TODAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
GALES TO 35 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS.
.TONIGHT...SOUTHWEST GALES TO 40 KNOTS. A CHANCE OF SNOW IN THE
EVENING...THEN SNOW LIKELY AFTER MIDNIGHT.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. SNOW.
.TUESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. ISOLATED SNOW SHOWERS.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

LSZ265-232300-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
950 AM EST MON FEB 23 2015

.REST OF TODAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST IN
THE AFTERNOON.
.TONIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW IN
THE EVENING...THEN SNOW LIKELY AFTER MIDNIGHT.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. SNOW LIKELY IN THE MORNING...THEN
SCATTERED SNOW SHOWERS IN THE AFTERNOON.
.TUESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. SCATTERED SNOW SHOWERS.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

LSZ266-232300-
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-
950 AM EST MON FEB 23 2015

...GALE WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH
TUESDAY MORNING...

.REST OF TODAY...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST IN
THE AFTERNOON. ISOLATED SNOW SHOWERS.
.TONIGHT...SOUTH GALES TO 35 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. A CHANCE OF SNOW IN THE EVENING...THEN SNOW LIKELY
AFTER MIDNIGHT.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS IN THE AFTERNOON. SNOW LIKELY.
.TUESDAY NIGHT...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS.
.WEDNESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. SCATTERED SNOW SHOWERS.
.WEDNESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

LSZ267-232300-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
950 AM EST MON FEB 23 2015

.REST OF TODAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
15 TO 25 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS LATE IN
THE MORNING.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST AFTER
MIDNIGHT. A CHANCE OF SNOW IN THE EVENING...THEN SNOW AFTER MIDNIGHT.
.TUESDAY...SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST
GALES TO 35 KNOTS IN THE AFTERNOON. SNOW.
.TUESDAY NIGHT...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS. SCATTERED SNOW
SHOWERS.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH
5 TO 15 KNOTS AFTER MIDNIGHT.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS.

NOTE...WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$
LSZ261-232300-
MAFOR 2316/
SUPERIOR WEST...GALE WARNING IN EFFECT...11530 14550 11550 11640
11630. CHANCE OF SNOW TUESDAY MORNING. WAVES OMITTED FOR MOSTLY
ICE COVERED AREAS.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11530 11540
13550 11557 11657 11740. CHANCE OF SNOW AFTER MIDNIGHT TONIGHT.
WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...12520 11530
12540 11547 12647. CHANCE OF SNOW AFTER MIDNIGHT TONIGHT. WAVES
OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR EAST...GALE WARNING IN EFFECT...11620 11530 11440 11450
11550 12557 11647. CHANCE OF SNOW AFTER MIDNIGHT TONIGHT. WAVES
OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

PETRO


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