Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

000
FZUS63 KMQT 230747
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
347 AM EDT SAT APR 23 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.3 INCH HIGH PRESSURE OVER LAKE SUPERIOR EARLY THIS
MORNING WILL MOVE INTO THE NORTHEAST STATES ON SUNDAY WHILE A 29.4
INCH LOW PRESSURE DEVELOPS OVER THE NORTHERN PLAINS AND EXTENDS A LOW
PRESSURE TROUGH EAST INTO THE UPPER MIDWEST. AS A 30.5 INCH HIGH
PRESSURE OVER CENTRAL CANADA SHIFTS SOUTHEAST INTO FAR NORTHWEST
ONTARIO ON MONDAY...EXPECT THE PLAINS LOW TO MOVE SOUTHEAST INTO THE
LOWER GREAT LAKES AND WEAKEN TO 29.7 INCHES. THIS LOW WILL CONTINUE
EAST INTO THE MID ATLANTIC STATES ON TUESDAY...ALLOWING THE ONTARIO
HIGH PRESSURE TO EXTEND A RIDGE INTO THE UPPER LAKES. THIS RIDGE AXIS
WILL SHIFT OVER SOUTHEAST ONTARIO ON WEDNESDAY TO THE NORTHEAST OF A
29.4 INCH LOW PRESSURE DEVELOPING IN THE NORTH CENTRAL PLAINS.

LSZ162-231600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
347 AM EDT SAT APR 23 2016 /247 AM CDT SAT APR 23 2016/

...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY
AFTERNOON...

.EARLY THIS MORNING...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.
.TONIGHT...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. RAIN LIKELY. WAVES BUILDING TO 3 TO
6 FEET.
.SUNDAY...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN. WAVES BUILDING TO
6 TO 9 FEET.
.SUNDAY NIGHT...NORTHEAST GALES TO 35 KNOTS. A CHANCE OF RAIN. A
SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. WAVES SUBSIDING TO 5 TO
8 FEET.
.MONDAY...NORTHEAST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN AND SNOW. WAVES
BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO 4 TO 7 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.

$$

LSZ263-231600-
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-
347 AM EDT SAT APR 23 2016

.EARLY THIS MORNING...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 1 TO 3 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN THROUGH
MIDNIGHT...THEN RAIN LIKELY AFTER MIDNIGHT. WAVES BUILDING TO
2 TO 4 FEET.
.SUNDAY...EAST WINDS 20 TO 30 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. A CHANCE OF RAIN. WAVES BUILDING TO 5 TO 8 FEET.
.SUNDAY NIGHT...NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF RAIN.
A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO
8 FEET.
.MONDAY...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET...THEN
SUBSIDING TO 4 TO 7 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST. WAVES
BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ264-231600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
347 AM EDT SAT APR 23 2016

.EARLY THIS MORNING...EAST WINDS LESS THAN 10 KNOTS. WAVES CALM
TO 2 FEET.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS BY MID AFTERNOON.
WAVES CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN. WAVES CALM
TO 2 FEET.
.SUNDAY...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN. WAVES
BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...NORTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN AFTER
MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET.
.MONDAY...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.TUESDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ265-231600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
347 AM EDT SAT APR 23 2016

.EARLY THIS MORNING...NORTHWEST WINDS LESS THAN 10 KNOTS BECOMING
EAST. WAVES CALM TO 2 FEET.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. A CHANCE OF RAIN THROUGH MIDNIGHT...THEN RAIN LIKELY
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO
CALM TO 2 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. RAIN LIKELY THROUGH EARLY AFTERNOON...THEN A
CHANCE OF RAIN BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES BUILDING TO 3 TO
6 FEET.
.MONDAY...NORTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 5 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO
4 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.

$$

LSZ266-231600-
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-
347 AM EDT SAT APR 23 2016

.EARLY THIS MORNING...NORTHWEST WINDS LESS THAN 10 KNOTS BECOMING
EAST 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.
WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. A CHANCE OF RAIN. WAVES BUILDING TO 2 TO
4 FEET.
.SUNDAY NIGHT...EAST WINDS 15 TO 25 KNOTS BECOMING NORTHEAST
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES BUILDING
TO 3 TO 6 FEET.
.MONDAY...NORTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 5 TO 8 FEET...THEN
SUBSIDING TO 2 TO 4 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET...
THEN BUILDING TO 2 TO 4 FEET.
.TUESDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET.

$$

LSZ267-231600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
347 AM EDT SAT APR 23 2016

.EARLY THIS MORNING...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
.TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AFTER MIDNIGHT. WAVES
CALM TO 2 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS. RAIN LIKELY THROUGH EARLY
AFTERNOON...THEN A CHANCE OF RAIN BY MID AFTERNOON. WAVES
BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN. WAVES
BUILDING TO 3 TO 5 FEET.
.MONDAY...NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.MONDAY NIGHT...NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING
TO CALM TO 2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ261-231600-
MAFOR 2309/
SUPERIOR WEST 14200 11220 11120 11126 11136. CHANCE OF RAIN LATE
THIS EVENING. WAVES AROUND 1 FOOT TODAY. WAVES 1 TO 3 FEET
BUILDING TO 3 TO 5 FEET TONIGHT.

SUPERIOR NORTH CENTRAL 11100 12300 11310 11210 11310 12210.
CHANCE OF RAIN FROM LATE EVENING ON TONIGHT. WAVES 2 FEET OR
LESS.

SUPERIOR SOUTH CENTRAL 11900 12300 13210 11310 11316. CHANCE OF RAIN
AFTER MIDNIGHT TONIGHT. WAVES 3 FEET OR LESS.

SUPERIOR EAST 11200 12310 13210 12300. WAVES 1 TO 2 FEET.

$$

JLA



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.