Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | 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 29
000
FZUS63 KMQT 211414
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1014 AM EDT MON APR 21 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.8 INCH LOW PRESSURE SYSTEM NEAR THE ARROWHEAD OF
MINNESOTA WILL TRACK EAST ACROSS ONTARIO TODAY WHILE A SECOND 29.7
INCH LOW MOVES THROUGH WISCONSIN AND INTO LOWER MICHIGAN. THESE TWO
LOW PRESSURE SYSTEMS WILL MERGE OVER FAR SOUTHEAST ONTARIO ON TUESDAY
MORNING AND DEEPEN TO 29.5 INCHES AS A 30.2 INCH HIGH PRESSURE MOVES
FROM SOUTH CENTRAL CANADA INTO MINNESOTA. LOOK FOR THIS HIGH TO DRIFT
THROUGH THE GREAT LAKES ON WEDNESDAY AND INTO THE MID ATLANTIC STATES
ON THURSDAY. A 29.3 INCH LOW PRESSURE TAKING SHAPE IN THE NORTHERN
PLAINS ON WEDNESDAY WILL THEN FOLLOW INTO MINNESOTA ON THURSDAY AND
THE UPPER GREAT LAKES ON FRIDAY.

LSZ162-212215-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1014 AM EDT MON APR 21 2014 /914 AM CDT MON APR 21 2014/

.REST OF TODAY...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. ISOLATED RAIN SHOWERS. WAVES CALM TO
2 FEET.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTH WINDS LESS THAN 10 KNOTS BACKING EAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
THROUGH MIDNIGHT. RAIN LIKELY AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.THURSDAY...EAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST. SNOW.
WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.FRIDAY...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN. A CHANCE
OF SNOW. WAVES SUBSIDING TO 1 TO 3 FEET.

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

$$

LSZ263-212215-
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-
1014 AM EDT MON APR 21 2014

.REST OF TODAY...WEST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS BY MID AFTERNOON. ISOLATED RAIN SHOWERS. WAVES CALM TO
2 FEET.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTH WINDS LESS THAN 10 KNOTS BACKING SOUTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 15 TO 25 KNOTS BACKING NORTHEAST. SNOW.
WAVES BUILDING TO 3 TO 5 FEET.
.FRIDAY...NORTH WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW. WAVES
BUILDING TO 3 TO 6 FEET...THEN SUBSIDING TO 2 TO 4 FEET.

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

$$

LSZ264-212215-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1014 AM EDT MON APR 21 2014

.REST OF TODAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING WEST BY
MID AFTERNOON. ISOLATED RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS VEERING NORTH AFTER
MIDNIGHT. A FEW GALE FORCE GUSTS TO 35 KNOTS AFTER MIDNIGHT. WAVES
BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH
LESS THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST
5 TO 15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. SNOW. WAVES BUILDING TO 3 TO 5 FEET.
.FRIDAY...NORTH WINDS 20 TO 30 KNOTS. SNOW LIKELY...THEN A CHANCE
OF SNOW. WAVES SUBSIDING TO 2 TO 4 FEET.

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

$$

LSZ265-212215-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1014 AM EDT MON APR 21 2014

.REST OF TODAY...EAST WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. ISOLATED RAIN SHOWERS BY MID AFTERNOON.
.TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A FEW GALES FORCE GUSTS
TO 35 KNOTS POSSIBLE AFTER MIDNIGHT.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO 25
KNOTS BY MID AFTERNOON. A FEW GALE FORCE GUSTS TO 35 KNOTS POSSIBLE
IN THE MORNING.
.TUESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS DIMINISHING TO
LESS THAN 10 KNOTS AFTER MIDNIGHT.
.WEDNESDAY...EAST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS BY MID AFTERNOON.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS. A CHANCE OF
RAIN AFTER MIDNIGHT.
.THURSDAY...EAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. SNOW.
.FRIDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. SNOW LIKELY...THEN A CHANCE OF SNOW.

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

$$

LSZ266-212215-
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-
1014 AM EDT MON APR 21 2014

.REST OF TODAY...EAST WINDS 5 TO 15 KNOTS. ISOLATED RAIN SHOWERS
BY MID AFTERNOON.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30
KNOTS AFTER MIDNIGHT. A FEW GALE FORCE GUSTS TO 35 KNOTS POSSIBLE
AFTER MIDNIGHT. ISOLATED RAIN SHOWERS EARLY IN THE EVENING.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO 25
KNOTS BY MID AFTERNOON. A FEW GALE FORCE GUSTS TO 35 KNOTS IN THE
MORNING. A SLIGHT CHANCE OF DRIZZLE AND SNOW SHOWERS IN THE MORNING.
.TUESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS.
.WEDNESDAY...NORTH WINDS LESS THAN 10 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS.
.THURSDAY...SOUTHEAST WINDS 15 TO 25 KNOTS BACKING EAST. SNOW.
.FRIDAY...NORTH WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS. SNOW LIKELY...THEN A CHANCE OF SNOW.

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

$$

LSZ267-212215-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1014 AM EDT MON APR 21 2014

.REST OF TODAY...EAST WINDS 5 TO 15 KNOTS. ISOLATED RAIN SHOWERS
BY MID AFTERNOON.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. ISOLATED RAIN SHOWERS THROUGH MIDNIGHT.
A SLIGHT CHANCE OF DRIZZLE...FREEZING DRIZZLE AND FLURRIES AFTER
MIDNIGHT.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. A SLIGHT CHANCE OF DRIZZLE...FREEZING DRIZZLE AND SNOW
SHOWERS IN THE MORNING.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH BY MID
AFTERNOON.
.WEDNESDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT.
.THURSDAY...SOUTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN.
RAIN LIKELY.
.FRIDAY...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS. SNOW LIKELY...THEN A CHANCE OF SNOW.

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

$$
LSZ261-212215-
MAFOR 2115/

SUPERIOR WEST 11600 11610 13730 13720. WAVES 2 FEET OR LESS. WAVE
HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

SUPERIOR NORTH CENTRAL 12310 11520 11730 12740 19750 12840. ISOLATED
RAIN SHOWERS THIS AFTERNOON AND EVENING. WAVES 1 FOOT OR LESS THIS
AFTERNOON AND THIS EVENING. WAVES 1 TO 5 FEET TONIGHT AND TUESDAY
MORNING. WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.

SUPERIOR SOUTH CENTRAL 11200 11300 11610 11730 11740 13740 19750.
ISOLATED RAIN SHOWERS THIS AFTERNOON. WAVES OMITTED FOR MOSTLY ICE
COVERED AREAS.

SUPERIOR EAST 11200 11210 11110 12730 12740 11840 19850. ISOLATED
RAIN SHOWERS THIS EVENING. SLIGHT CHANCE OF DRIZZLE LIGHT FREEZING
DRIZZLE AND SNOW SHOWERS TUESDAY MORNING. WAVES OMITTED FOR MOSTLY
ICE COVERED AREAS.

$$

MCD







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