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 29

000
FZUS63 KMQT 181354
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
954 AM EDT FRI APR 18 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.2 INCH LOW PRESSURE TROUGH EAST OF LAKE SUPERIOR
WILL REACH QUEBEC THIS AFTERNOON AS A HIGH PRESSURE RIDGE OF 30.5
INCHES OVER THE EASTERN GREAT LAKES SLIDES TO THE EAST. THE RIDGE
WILL SHIFT TO THE LOWER GREAT LAKES ON SATURDAY AS LOW PRESSURE OF
29.7 INCHES TRACKS FROM THE NORTHERN PLAINS TOWARD NORTHERN
ONTARIO...WITH AN ASSOCIATED LOW PRESSURE TROUGH OF 30.0 INCHES
CROSSING THE UPPER GREAT LAKES SATURDAY NIGHT. A 30.1 INCH HIGH
PRESSURE RIDGE WILL QUICKLY SHIFT ACROSS LAKE SUPERIOR SUNDAY NIGHT
INTO EARLY MONDAY...AHEAD OF THE NEXT QUICK MOVING 29.9 INCH LOW
PRESSURE SYSTEM SINKING ACROSS THE GREAT LAKES REGION FROM THE
NORTHWEST MONDAY AFTERNOON INTO MONDAY NIGHT. EXPECT 30.1 INCH HIGH
PRESSURE OVER CENTRAL CANADA AND THE NORTHERN PLAINS TUESDAY MORNING
TO DRIFT TOWARD THE UPPER GREAT LAKES ON TUESDAY AFTERNOON.

LSZ162-182200-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
954 AM EDT FRI APR 18 2014 /854 AM CDT FRI APR 18 2014/

.REST OF TODAY...WEST WINDS LESS THAN 10 KNOTS BECOMING SOUTH
5 TO 15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. A CHANCE OF FREEZING
RAIN AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST BY MID
AFTERNOON. PATCHY FOG. SNOW...POSSIBLY MIXED WITH FREEZING RAIN
IN THE MORNING...THEN RAIN LIKELY. WAVES BUILDING TO 3 TO 5
FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST
LESS THAN 10 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN THROUGH
MIDNIGHT. AREAS OF FOG. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. AREAS OF FOG THROUGH EARLY AFTERNOON. WAVES CALM TO
2 FEET.
.SUNDAY NIGHT...SOUTH WINDS LESS THAN 10 KNOTS BACKING EAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING EAST. WAVES CALM
TO 2 FEET.

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

$$

LSZ263-264-182200-
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-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
954 AM EDT FRI APR 18 2014

.REST OF TODAY...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES 2 TO 4 FEET
SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...SOUTHEAST WINDS 15 TO 25 KNOTS. PATCHY FOG. RAIN AND
SNOW. A CHANCE OF FREEZING RAIN IN THE MORNING. WAVES BUILDING TO
3 TO 6 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING
SOUTHWEST 5 TO 15 KNOTS AFTER MIDNIGHT. RAIN LIKELY THROUGH
MIDNIGHT. AREAS OF FOG. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS. AREAS OF FOG THROUGH EARLY
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...WEST WINDS LESS THAN 10 KNOTS BACKING SOUTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 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.

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

$$

LSZ265-182200-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
954 AM EDT FRI APR 18 2014

.REST OF TODAY...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS BY MID AFTERNOON.
.TONIGHT...EAST WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST 5 TO
15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. PATCHY FOG. RAIN AND SNOW IN THE
MORNING. RAIN IN THE AFTERNOON.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. AREAS OF FOG. RAIN THROUGH MIDNIGHT. A SLIGHT
CHANCE OF RAIN AFTER MIDNIGHT.
.SUNDAY...WEST WINDS 5 TO 15 KNOTS. AREAS OF FOG THROUGH EARLY
AFTERNOON.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH AFTER
MIDNIGHT.
.MONDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS.

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

$$

LSZ266-267-182200-
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-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
954 AM EDT FRI APR 18 2014

.REST OF TODAY...NORTHWEST WINDS 10 TO 20 KNOTS.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW IN THE MORNING. RAIN
LIKELY IN THE AFTERNOON. PATCHY FOG BY MID AFTERNOON.
.SATURDAY NIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS VEERING SOUTH
AFTER MIDNIGHT. AREAS OF FOG. RAIN THROUGH MIDNIGHT. A CHANCE OF
RAIN AFTER MIDNIGHT.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. AREAS OF FOG THROUGH EARLY AFTERNOON.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT.
.MONDAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING NORTHWEST.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH.

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

$$
LSZ261-182200-
MAFOR 1815/
SUPERIOR WEST 11600 11500 11300 12210 11220 12237. CHANCE OF SNOW
SHOWERS OVERNIGHT. PATCHY FOG. A CHANCE OF LIGHT FREEZING RAIN
SATURDAY MORNING. WAVES CALM TO 3 FEET BUILDING TO 2 TO 5 FEET
SATURDAY MORNING.

SUPERIOR NORTH CENTRAL 12720 11710 11600 11400 11200 12320. CHANCE
OF SNOW SHOWERS SATURDAY MORNING. WAVES CALM TO 4 FEET.

SUPERIOR SOUTH CENTRAL 13720 11700 11500 11300 11310 11320. SLIGHT
CHANCE OF SNOW SHOWERS SATURDAY MORNING. NOTE...WAVES OMITTED FOR
MOSTLY ICE COVERED AREAS.

SUPERIOR EAST 14720 11700 11800 11210 11320. NOTE...WAVES OMITTED
FOR MOSTLY ICE COVERED AREAS.

$$

PETRO





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