Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 220230
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
930 PM EST SAT FEB 21 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A LOW PRESSURE TROUGH OF 30.0 INCHES STRETCHING ACROSS
THE LOWER GREAT LAKES WILL MERGE WITH A 29.9 INCH LOW OVER NEW
ENGLAND ON SUNDAY. IN ITS WAKE...LARGE ARCTIC HIGH PRESSURE OF 30.9
INCHES OVER SOUTHERN SASKATCHEWAN WILL MOVE TO THE DAKOTAS SUNDAY. AS
THE HIGH WEAKENS TO 30.8 INCHES WHILE SHIFTING TO THE MID MISSISSIPPI
VALLEY MONDAY...29.6 INCH LOW PRESSURE WILL DROP SOUTHEAST INTO
NORTHERN MANITOBA. THE LOW WILL THEN TRACK SOUTHEAST ACROSS ONTARIO
TUESDAY AND TUESDAY NIGHT WHILE DEEPENING TO 29.3 INCHES...SENDING A
TROUGH ACROSS LAKE SUPERIOR. THE LOW WILL MOVE TO QUEBEC ON WEDNESDAY
AS A HIGH PRESSURE RIDGE AVERAGING 30.7 INCHES BUILDS SOUTHEAST INTO
THE NORTHERN PLAINS THROUGH THURSDAY.

LSZ162-221030-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
930 PM EST SAT FEB 21 2015

.REST OF TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. ISOLATED SNOW
SHOWERS EAST OF THE APOSTLE ISLANDS.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. ISOLATED SNOW SHOWERS IN THE MORNING.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON.
.MONDAY NIGHT...SOUTHWEST GALES TO 35 KNOTS BECOMING WEST 20 TO
30 KNOTS AFTER MIDNIGHT.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS.

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

$$

LSZ263-221030-
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-
930 PM EST SAT FEB 21 2015

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

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

$$

LSZ264-221030-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
930 PM EST SAT FEB 21 2015

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

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

$$

LSZ265-221030-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
930 PM EST SAT FEB 21 2015

.REST OF TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. SCATTERED SNOW
SHOWERS.
.SUNDAY...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS.
.SUNDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
.MONDAY...WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST IN THE
AFTERNOON.
.MONDAY NIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF SNOW.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS BACKING NORTHWEST
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS.

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

$$

LSZ266-221030-
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-
930 PM EST SAT FEB 21 2015

.REST OF TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH
15 TO 25 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES CALM
TO 2 FEET.
.SUNDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 20 TO
30 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
CALM TO 2 FEET.
.MONDAY NIGHT...SOUTHWEST GALES TO 35 KNOTS. A CHANCE OF SNOW IN
THE EVENING...THEN SNOW LIKELY AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.TUESDAY...WEST GALES TO 35 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW. WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. WAVES
CALM TO 2 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

$$

LSZ267-221030-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
930 PM EST SAT FEB 21 2015

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

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

$$
LSZ261-221030-
MAFOR 2204/
SUPERIOR WEST 14720 11720 11730 11630 11620. WAVES OMITTED FOR
MOSTLY ICE COVERED AREAS.

SUPERIOR NORTH CENTRAL 12820 11830 14730 11620. WAVES OMITTED FOR
MOSTLY ICE COVERED AREAS.

SUPERIOR SOUTH CENTRAL 12720 12730 13740 11620. SCATTERED SNOW
SHOWERS OVERNIGHT AND EARLY SUNDAY AFTERNOON. WAVES 2 FEET OR LESS.

SUPERIOR EAST 11720 11820 12830 11730 12740 11730. SCATTERED SNOW
SHOWERS. WAVES OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

KLUBER



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