Great Lakes Forecast
Issued by NWS

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FZUS63 KMQT 091408
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1008 AM EDT WED APR 9 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A HIGH PRESSURE RIDGE OF 30.0 INCHES OVER THE UPPER GREAT
LAKES WILL SLIDE EAST AND REACH THE NEW ENGLAND STATES THIS EVENING.
MEANWHILE...LOW PRESSURE OF 29.1 INCHES ORGANIZING OVER NORTHERN
SASKATCHEWAN WILL DEEPEN TO 28.7 INCHES AS IT MOVES OVER JAMES BAY
THURSDAY. AN ASSOCIATED LOW PRESSURE TROUGH OF 29.4 INCHES WILL CROSS
LAKE SUPERIOR OVERNIGHT TONIGHT AND THURSDAY MORNING. IN ITS
WAKE...HIGH PRESSURE OF 30.0 INCHES WILL SHIFT FROM THE PLAINS STATES
THURSDAY TO THE OHIO VALLEY FRIDAY. A LOW PRESSURE TROUGH OF 29.8
INCHES WILL THEN PUSH THROUGH THE UPPER GREAT LAKES LATE FRIDAY
BEFORE A HIGH PRESSURE RIDGE OF 30.1 INCHES MOVES OVER LAKE SUPERIOR
SATURDAY. A LOW PRESSURE TROUGH OF 29.7 INCHES DEVELOPING IN THE
PLAINS ON SATURDAY WILL MOVE OVER THE WESTERN GREAT LAKES SUNDAY.

LSZ162-092215-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1008 AM EDT WED APR 9 2014 /908 AM CDT WED APR 9 2014/

.REST OF TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS BY MID AFTERNOON.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. RAIN SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH AFTER
MIDNIGHT.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST. A CHANCE
OF RAIN...POSSIBLY MIXED WITH SNOW.
.SUNDAY...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.

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

$$

LSZ263-092215-
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-
1008 AM EDT WED APR 9 2014

.REST OF TODAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS BY MID AFTERNOON.
.TONIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS VEERING WEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF THUNDERSTORMS THROUGH MIDNIGHT. A
CHANCE OF RAIN SHOWERS.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS...WITH A FEW GALE FORCE GUSTS
TO 35 KNOTS.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW.
.SUNDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF SNOW.

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

$$

LSZ264-092215-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1008 AM EDT WED APR 9 2014

.REST OF TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS BY MID AFTERNOON.
.TONIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT. RAIN SHOWERS LIKELY AFTER
MIDNIGHT.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS...WITH A FEW GALE FORCE GUSTS
TO 35 KNOTS.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST
5 TO 15 KNOTS AFTER MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS.
.FRIDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS AFTER MIDNIGHT.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW.
.SUNDAY...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW.

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

$$

LSZ265-092215-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1008 AM EDT WED APR 9 2014

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON.
.TONIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS VEERING WEST AFTER
MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH MIDNIGHT...THEN
RAIN SHOWERS LIKELY AFTER MIDNIGHT.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS...WITH A FEW GALE FORCE GUSTS
TO 35 KNOTS.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW.
.SUNDAY...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW.

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

$$

LSZ266-092215-
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-
1008 AM EDT WED APR 9 2014

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS...WITH A FEW GALE FORCE GUSTS
TO 35 KNOTS.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS BY MID AFTERNOON.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW.
.SUNDAY...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN AND SNOW.

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

$$

LSZ267-092215-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1008 AM EDT WED APR 9 2014

.REST OF TODAY...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
.THURSDAY...WEST WINDS 20 TO 30 KNOTS...WITH A FEW GALE FORCE GUSTS
TO 35 KNOTS. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH EARLY AFTERNOON.
.THURSDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS BY MID AFTERNOON.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS AFTER MIDNIGHT.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. A CHANCE OF RAIN.
.SUNDAY...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF RAIN AND SNOW.

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

$$
LSZ261-092215-
MAFOR 0915/
SUPERIOR WEST 13530 11540 11546 11640 11630 11640. CHANCE OF RAIN
SHOWERS IN THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES
OMITTED FOR MOSTLY ICE COVERED AREAS.

SUPERIOR NORTH CENTRAL 13530 12540 11646 12640. SLIGHT CHANCE OF
RAIN SHOWERS IN THE EVENING. WAVES OMITTED FOR MOSTLY ICE COVERED
AREAS.

SUPERIOR SOUTH CENTRAL 11420 12440 12540 11546 12640. CHANCE OF RAIN
SHOWERS THURSDAY MORNING.

SUPERIOR EAST 11420 14440 11540 12640. CHANCE OF RAIN SHOWERS
OVERNIGHT THROUGH THURSDAY MORNING. WAVES OMITTED FOR MOSTLY ICE
COVERED AREAS.

$$

JS





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