Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 251410
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1010 AM EDT MON APR 25 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...LOW PRESSURE OF 29.3 INCHES OVER SOUTHERN MINNESOTA WILL
WEAKEN TO 29.7 INCHES AS IT REACHES LOWER MICHIGAN TONIGHT WHILE HIGH
PRESSURE OF 30.4 INCHES PERSISTS ACROSS HUDSON BAY. AS THE LOW MOVES
TO THE ATLANTIC COAST BY TUESDAY NIGHT...THE HIGH OVER HUDSON BAY
WILL PUSH A RIDGE AVERAGING 30.1 INCHES OVER THE GREAT LAKES REGION.
AS THE HIGH BUILDS TO 30.6 INCHES OVER HUDSON BAY THROUGH FRIDAY...
EXPECT THE RIDGE TO REMAIN NEARLY STATIONARY OVER THE UPPER GREAT
LAKES.

LSZ162-252215-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1010 AM EDT MON APR 25 2016 /910 AM CDT MON APR 25 2016/

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

.REST OF TODAY...EAST GALES TO 40 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. RAIN. WAVES 8 TO 11 FEET BUILDING TO 9 TO 12 FEET.
.TONIGHT...NORTHEAST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. RAIN LIKELY THROUGH MIDNIGHT...THEN A SLIGHT
CHANCE OF RAIN. A SLIGHT CHANCE OF SNOW. WAVES SUBSIDING TO 4 TO 7
FEET.
.TUESDAY...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET.
.TUESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
1 TO 3 FEET.
.WEDNESDAY...EAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-252215-
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-
1010 AM EDT MON APR 25 2016

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

.REST OF TODAY...EAST GALES TO 35 KNOTS. RAIN. WAVES 6 TO 9 FEET
BUILDING TO 8 TO 11 FEET.
.TONIGHT...EAST WINDS 20 TO 30 KNOTS...WITH GALE FORCE GUSTS TO 35
KNOTS...BACKING NORTHEAST 20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF
RAIN...POSSIBLY MIXED WITH SNOW. WAVES SUBSIDING TO 3 TO 6 FEET.
.TUESDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET...THEN
SUBSIDING TO 3 TO 6 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET...THEN
SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ264-252215-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1010 AM EDT MON APR 25 2016

.REST OF TODAY...EAST WINDS 20 TO 30 KNOTS WITH A FEW GALE FORCE
GUSTS TO 35 KNOTS DIMINISHING TO 20 TO 30 KNOTS BY MID AFTERNOON.
SCATTERED RAIN SHOWERS. WAVES 3 TO 6 FEET BUILDING TO 5 TO 8
FEET...THEN SUBSIDING TO 4 TO 7 FEET.
.TONIGHT...EAST WINDS 20 TO 30 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN THROUGH
MIDNIGHT. A SLIGHT CHANCE OF SNOW. WAVES SUBSIDING TO 3 TO
6 FEET.
.TUESDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH. WAVES CALM
TO 2 FEET.

$$

LSZ265-252215-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1010 AM EDT MON APR 25 2016

.REST OF TODAY...EAST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS
TO 35 KNOTS BY MID AFTERNOON. NUMEROUS RAIN SHOWERS. WAVES 4 TO 7
FEET BUILDING TO 6 TO 9 FEET.
.TONIGHT...EAST WINDS 20 TO 30 KNOTS...WITH A FEW GALE FORCE GUSTS
TO 35 KNOTS...DIMINISHING TO 20 TO 30 KNOTS AFTER MIDNIGHT. RAIN
LIKELY THROUGH MIDNIGHT...THEN A SLIGHT CHANCE OF RAIN. A SLIGHT
CHANCE OF SNOW. WAVES SUBSIDING TO 3 TO 5 FEET.
.TUESDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES 3 TO 6 FEET...THEN SUBSIDING TO 1
TO 3 FEET.
.TUESDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH. WAVES CALM
TO 2 FEET.

$$

LSZ266-252215-
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-
1010 AM EDT MON APR 25 2016

.REST OF TODAY...EAST WINDS 20 TO 30 KNOTS. RAIN SHOWERS. WAVES
3 TO 6 FEET BUILDING TO 5 TO 8 FEET.
.TONIGHT...EAST WINDS 20 TO 30 KNOTS. A CHANCE OF RAIN...POSSIBLY
MIXED WITH SNOW. WAVES SUBSIDING TO 3 TO 6 FEET.
.TUESDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING
TO 1 TO 3 FEET.
.WEDNESDAY...NORTHEAST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ267-252215-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1010 AM EDT MON APR 25 2016

.REST OF TODAY...EAST WINDS 20 TO 30 KNOTS. NUMEROUS RAIN
SHOWERS. WAVES 3 TO 6 FEET.
.TONIGHT...EAST WINDS 20 TO 30 KNOTS BACKING NORTHEAST AFTER
MIDNIGHT. A CHANCE OF RAIN...POSSIBLY MIXED WITH SNOW. WAVES
SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES
CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES
CALM TO 2 FEET.

$$
LSZ261-252215-
MAFOR 2515/
SUPERIOR WEST...GALE WARNING IN EFFECT...12256 12156 11150 13140.
CHANCE OF RAIN LATE IN THE EVENING AND TONIGHT. SLIGHT CHANCE OF
SNOW AFTER MIDNIGHT TONIGHT. WAVES 8 TO 12 FEET THIS AFTERNOON
SUBSIDING TO 4 TO 8 FEET TONIGHT AND TUESDAY MORNING.

SUPERIOR NORTH CENTRAL 14240 11230 13130. SCATTERED RAIN SHOWERS
THIS AFTERNOON THROUGH EARLY EVENING. SLIGHT CHANCE OF SNOW TONIGHT.
WAVES 3 TO 8 FEET.

SUPERIOR SOUTH CENTRAL 14246 12240 11130 11120. CHANCE OF RAIN
AND SLIGHT CHANCE OF SNOW AFTER MIDNIGHT TONIGHT. WAVES 5 TO 9
FEET THIS AFTERNOON AND TONIGHT SUBSIDING TO 3 TO 5 FEET TUESDAY
MORNING.

SUPERIOR EAST 13246 11240 12230 11130 11120. CHANCE OF RAIN AND
A CHANCE OF SNOW LATE IN THE EVENING THROUGH LATE TONIGHT. WAVES 3
TO 6 FEET.

$$

JS


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