Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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 120123
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
923 PM EDT FRI APR 11 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.8 INCH LOW SOUTHWEST OF JAMES BAY WILL SHIFT EAST
INTO QUEBEC THROUGH TONIGHT AND DRAG A 29.9 INCH TROUGH ACROSS THE
UPPER GREAT LAKES. BEHIND THIS TROUGH...A 30.1 INCH HIGH PRESSURE
RIDGE WILL NOSE SOUTH FROM CANADA AND OVER LAKE SUPERIOR BY SATURDAY
MORNING. A LOW PRESSURE TROUGH OF 29.7 INCHES DEVELOPING IN THE
PLAINS ON SATURDAY WILL MOVE OVER THE GREAT LAKES SATURDAY NIGHT AND
SUNDAY. LOW PRESSURE OF 29.6 INCHES OVER THE MID MISSISSIPPI RIVER
VALLEY ON SUNDAY EVENING WILL DEEPEN TO 29.5 INCHES AS IT MOVES OVER
THE LOWER GREAT LAKES ON MONDAY AFTERNOON. A 30.2 INCH RIDGE
EXTENDING FROM 30.4 INCH HIGH PRESSURE OVER SOUTH CENTRAL CANADA WILL
THEN BUILD ACROSS THE UPPER GREAT LAKES ON TUESDAY AND WEDNESDAY.


LSZ162-120930-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
923 PM EDT FRI APR 11 2014 /823 PM CDT FRI APR 11 2014/

.REST OF TONIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF RAIN AND SNOW AFTER MIDNIGHT. WAVES
CALM TO 2 FEET BUILDING TO 1 TO 3 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. SNOW...POSSIBLY MIXED WITH RAIN. WAVES
BUILDING TO 3 TO 5 FEET.
.SATURDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH
AFTER MIDNIGHT. A CHANCE OF SNOW...POSSIBLY MIXED WITH RAIN
THROUGH MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.MONDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

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

$$

LSZ263-120930-
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-
923 PM EDT FRI APR 11 2014

.REST OF TONIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW...
POSSIBLY MIXED WITH RAIN. WAVES BUILDING TO 3 TO 5 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW...POSSIBLY MIXED WITH RAIN
IN THE EVENING. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.MONDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.

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

$$

LSZ264-120930-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
923 PM EDT FRI APR 11 2014

.REST OF TONIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW THROUGH EARLY
AFTERNOON...THEN SNOW LIKELY. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW. WAVES SUBSIDING
TO CALM TO 2 FEET.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.MONDAY...NORTH WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 1 TO
3 FEET.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTHEAST.
WAVES CALM TO 2 FEET.

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

$$

LSZ265-120930-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
923 PM EDT FRI APR 11 2014

.REST OF TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING
NORTHEAST AFTER MIDNIGHT.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. SNOW...MIXED WITH RAIN BY MID AFTERNOON.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW POSSIBLY MIXED WITH RAIN
IN THE EVENING.
.SUNDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS BY MID AFTERNOON.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT.
.MONDAY...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS.

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

$$

LSZ266-120930-
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-
923 PM EDT FRI APR 11 2014

.REST OF TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH
AFTER MIDNIGHT.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW THROUGH EARLY
AFTERNOON...THEN SNOW...POSSIBLY MIXED WITH RAIN.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. RAIN LIKELY THROUGH MIDNIGHT...THEN A SLIGHT
CHANCE OF RAIN. RAIN MAY BE MIXED WITH SNOW AT TIMES.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT.
.MONDAY...NORTH WINDS 20 TO 30 KNOTS.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST
10 TO 20 KNOTS.

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

$$

LSZ267-120930-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
923 PM EDT FRI APR 11 2014

.REST OF TONIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT.
.SATURDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. A CHANCE OF SNOW. RAIN LIKELY BY MID AFTERNOON.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. RAIN LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT...THEN A SLIGHT CHANCE OF RAIN.
.SUNDAY...NORTH WINDS 5 TO 15 KNOTS.
.SUNDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW.
.MONDAY...NORTH WINDS 15 TO 25 KNOTS.
.MONDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS.

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

$$
LSZ261-120930-
MAFOR 1203/
SUPERIOR WEST 11800 11110 11220 14237 11120. CHANCE OF SNOW SATURDAY
EVENING. CALM TO 5 FEET.

SUPERIOR NORTH CENTRAL 11810 11100 11110 12220 12237 11230. SLIGHT
CHANCE OF SNOW SATURDAY MORNING. WAVES CALM TO 3 FEET.

SUPERIOR SOUTH CENTRAL 11700 11800 11100 11210 11220 11227 11237
11220. CHANCE OF SNOW SATURDAY MORNING. WAVES OMITTED FOR MOSTLY ICE
COVERED AREAS.

SUPERIOR EAST 11700 11800 11100 12210 11227 11237 11236. WAVES
OMITTED FOR MOSTLY ICE COVERED AREAS.

$$

JS





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