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 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FZUS63 KMQT 062058
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
358 PM EST FRI MAR 6 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.7 INCH HIGH PRESSURE SYSTEM OVER THE SOUTHEASTERN
STATES WILL REMAIN IN PLACE THROUGH THE DAY SATURDAY. A 29.9 INCH
LOW PRESSURE SYSTEM OVER THE SASKATCHEWAN AND MANITOBA BORDER WILL
SLIDE QUICKLY ACROSS THE UPPER GREAT LAKES EARLY SATURDAY AND THEN
INTO NEW ENGLAND ON SUNDAY. EXPECT A TRAILING 30.1 INCH HIGH PRESSURE
RIDGE TO CROSS THE UPPER LAKES LATE SATURDAY IN ADVANCE OF 29.7 INCH
LOW PRESSURE THAT WILL CROSS NORTHERN ONTARIO ON SUNDAY AND DRAG A
COLD FRONT OVER LAKE SUPERIOR LATE IN THE DAY. ANOTHER QUICK MOVING
WEAK HIGH PRESSURE RIDGE AVERAGING 30.0 INCHES WILL CROSS THE REGION
LATE SUNDAY INTO MONDAY AS LOW PRESSURE AVERAGING 29.5 INCHES PUSHES
INTO CENTRAL CANADA. THIS LOW WILL SHIFT TO HUDSON BAY BY TUESDAY
AFTERNOON WHILE DRAGGING A TROUGH AVERAGING 29.8 INCHES ACROSS LAKE
SUPERIOR. IN THE WAKE OF THE LOW...HIGH PRESSURE OF 30.4 INCHES WILL
BUILD FROM SASKATCHEWAN SOUTHEAST INTO THE UPPER GREAT LAKES REGION
DURING THE DAY WEDNESDAY...PLACING A RIDGE OF 30.2 INCHES ACROSS LAKE
SUPERIOR.

LSZ162-070500-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
358 PM EST FRI MAR 6 2015

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. SCATTERED SNOW SHOWERS
IN THE EVENING...THEN SNOW LIKELY AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. A SLIGHT CHANCE OF SNOW IN THE MORNING. WAVES CALM TO
2 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
CALM TO 2 FEET.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES CALM TO
2 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS VEERING EAST. WAVES
CALM TO 2 FEET.

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

$$

LSZ263-070500-
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-
358 PM EST FRI MAR 6 2015

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. SCATTERED SNOW SHOWERS IN THE EVENING...THEN SNOW
LIKELY AFTER MIDNIGHT.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON.
.MONDAY NIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST.

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

$$

LSZ264-070500-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
358 PM EST FRI MAR 6 2015

.LATE THIS AFTERNOON...WEST WINDS 15 TO 25 KNOTS.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. ISOLATED SNOW SHOWERS IN THE EVENING...THEN SNOW LIKELY
AFTER MIDNIGHT.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO
20 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW IN THE
MORNING.
.SATURDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON.
.MONDAY NIGHT...SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS.

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

$$

LSZ265-070500-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
358 PM EST FRI MAR 6 2015

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS AFTER MIDNIGHT. SNOW LIKELY AFTER MIDNIGHT.
.SATURDAY...WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. SNOW LIKELY IN THE MORNING.
.SATURDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS IN THE AFTERNOON.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH.

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

$$

LSZ266-070500-
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-
358 PM EST FRI MAR 6 2015

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. ISOLATED SNOW
SHOWERS.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. A CHANCE OF SNOW SHOWERS.
.SATURDAY...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST
20 TO 30 KNOTS IN THE AFTERNOON. SNOW LIKELY IN THE MORNING...
THEN A SLIGHT CHANCE OF SNOW IN THE AFTERNOON.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS.

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

$$

LSZ267-070500-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
358 PM EST FRI MAR 6 2015

.LATE THIS AFTERNOON...SOUTHWEST WINDS 10 TO 20 KNOTS. SCATTERED
SNOW SHOWERS.
.TONIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW
SHOWERS.
.SATURDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. SNOW LIKELY IN THE MORNING...THEN A SLIGHT CHANCE OF
SNOW IN THE AFTERNOON.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST
AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS.
.SUNDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW
SHOWERS IN THE EVENING.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 20 TO
30 KNOTS IN THE AFTERNOON.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS.
.TUESDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS VEERING NORTH.

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

$$

LSZ261-070500-
MAFOR 0622/
SUPERIOR WEST 11630 11510 11517 11520 11630 11620 12720.
SCATTERED SNOW SHOWERS THIS EVENING. WAVES OMITTED FOR MOSTLY ICE
COVERED AREAS.

SUPERIOR NORTH CENTRAL 11630 11620 11510 11517 11527 11630 11730
11830. CHANCE OF SNOW EARLY SATURDAY AFTERNOON. WAVES OMITTED FOR
MOSTLY ICE COVERED AREAS.

SUPERIOR SOUTH CENTRAL 11620 11610 11510 11500 11517 11630 12740.
CHANCE OF SNOW OVERNIGHT. WAVES OMITTED FOR MOSTLY ICE COVERED
AREAS.

SUPERIOR EAST 11620 11600 12500 11417 11527 11630 11730. CHANCE
OF SNOW OVERNIGHT. 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.