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
000
FZUS63 KMQT 130307
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1007 PM EST SUN FEB 12 2017

.SYNOPSIS...A 29.7 INCH LOW PRESSURE OVER EASTERN LAKE ONTARIO
LATE THIS EVENING WILL REACH NEW ENGLAND TONIGHT AS 30.5 INCH
HIGH PRESSURE DRIFTS ACROSS THE CENTRAL PLAINS. THIS HIGH PRESSURE
WILL SEND A 30.2 INCH RIDGE ACROSS THE UPPER GREAT LAKES TONIGHT
INTO MONDAY MORNING. A TROUGH OF 29.7 INCHES WILL MOVE OVER LAKE
SUPERIOR MONDAY NIGHT AHEAD OF 29.4 INCH LOW PRESSURE MOVING
SOUTHEASTWARD ACROSS NORTHERN ONTARIO. THE LOW WILL REACH
SOUTHERN ONTARIO LATE TUESDAY NIGHT AS A 30.3 INCH RIDGE DRIFTS
ACROSS THE NORTHERN PLAINS. THE RIDGE WILL CROSS THE UPPER GREAT
LAKES AT 30.0 INCHES LATE WEDNESDAY NIGHT THROUGH THURSDAY. THE
RIDGE WILL REACH THE LOWER GREAT LAKES ON FRIDAY AS A 29.5 INCH
TROUGH EDGES SOUTHWARD OVER THE NORTHERN PLAINS.

LSZ162-131115-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1007 PM EST SUN FEB 12 2017 /907 PM CST SUN FEB 12 2017/

.REST OF TONIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO
3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 4 TO
7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET...THEN
BUILDING TO 3 TO 5 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES 3 TO 5 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-131115-
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-
1007 PM EST SUN FEB 12 2017

.REST OF TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES 5 TO 8 FEET SUBSIDING TO
1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS IN THE
EVENING. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES 3 TO 6 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.TUESDAY NIGHT...NORTH GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. FREEZING SPRAY
AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO
3 TO 6 FEET.
.WEDNESDAY...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING EAST AFTER
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ264-131115-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1007 PM EST SUN FEB 12 2017

.REST OF TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY LATE IN THE EVENING.
WAVES 7 TO 10 FEET SUBSIDING TO 1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS IN THE AFTERNOON. WAVES BUILDING TO 5 TO 8 FEET.
.MONDAY NIGHT...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS IN THE
EVENING. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 3 TO
6 FEET.
.TUESDAY...WEST GALES TO 35 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 5 TO
8 FEET.
.TUESDAY NIGHT...NORTH GALES TO 40 KNOTS. FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 6 TO 9 FEET...THEN
SUBSIDING TO 4 TO 7 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.

$$

LSZ265-131115-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1007 PM EST SUN FEB 12 2017

.REST OF TONIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. WAVES 7 TO 10 FEET
SUBSIDING TO 2 TO 4 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS IN THE
EVENING. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 2 TO
4 FEET.
.TUESDAY...WEST GALES TO 35 KNOTS VEERING NORTHWEST IN THE
AFTERNOON. A CHANCE OF SNOW SHOWERS IN THE MORNING...THEN SNOW
SHOWERS LIKELY IN THE AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET.
.TUESDAY NIGHT...NORTH GALES TO 35 KNOTS. FREEZING SPRAY. SNOW
SHOWERS. WAVES BUILDING TO 4 TO 8 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. SNOW
SHOWERS LIKELY. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ266-131115-
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-
1007 PM EST SUN FEB 12 2017

...GALE WARNING IN EFFECT UNTIL 4 AM EST MONDAY...

.REST OF TONIGHT...NORTHWEST GALES TO 40 KNOTS DIMINISHING TO
20 TO 30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. ISOLATED SNOW
SHOWERS. WAVES 11 TO 15 FEET SUBSIDING TO 3 TO 6 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO
25 KNOTS IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 4 TO
7 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS...
POSSIBLY MIXED WITH RAIN. WAVES 3 TO 6 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO
35 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS IN THE
MORNING...THEN SNOW SHOWERS LIKELY IN THE AFTERNOON. WAVES
BUILDING TO 5 TO 8 FEET.
.TUESDAY NIGHT...NORTH GALES TO 40 KNOTS. FREEZING SPRAY. SNOW
SHOWERS LIKELY. WAVES BUILDING TO 6 TO 10 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY. SNOW SHOWERS LIKELY.
WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.

$$

LSZ267-131115-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1007 PM EST SUN FEB 12 2017

...GALE WARNING IN EFFECT UNTIL 4 AM EST MONDAY...

.REST OF TONIGHT...NORTHWEST GALES TO 40 KNOTS DIMINISHING TO
20 TO 30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. SCATTERED SNOW
SHOWERS. WAVES 12 TO 17 FEET SUBSIDING TO 4 TO 7 FEET.
.MONDAY...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTH 15 TO 25 KNOTS
IN THE AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 3 TO
5 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
20 TO 30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. A CHANCE OF SNOW SHOWERS. WAVES 3 TO 5 FEET.
.TUESDAY...WEST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY. WAVES BUILDING TO
5 TO 8 FEET.
.TUESDAY NIGHT...NORTH GALES TO 35 KNOTS. SNOW SHOWERS LIKELY IN
THE EVENING...THEN A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
FREEZING SPRAY AFTER MIDNIGHT. WAVES 5 TO 9 FEET.
.WEDNESDAY...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. WAVES
CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.

$$
LSZ261-131115-
MAFOR 1304/
SUPERIOR WEST 12620 11530 12540 12530 11630. WAVES 2 TO 6 FEET.

SUPERIOR NORTH CENTRAL 11741 11720 11610 12530 12540 11640.
FREEZING SPRAY LATE THIS EVENING. CHANCE OF SNOW SHOWERS LATE
MONDAY EVENING. WAVES 5 TO 8 FEET SUBSIDING TO 2 TO 4 FEET
OVERNIGHT AND MONDAY MORNING. WAVES BUILDING TO 4 TO 8 FEET
MONDAY AFTERNOON AND EVENING.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11751 11731
11620 12510 11520 11530 11630. FREEZING SPRAY OVERNIGHT. WAVES 6
TO 10 FEET SUBSIDING TO 4 TO 7 FEET OVERNIGHT. WAVES SUBSIDING
TO 1 TO 4 FEET MONDAY AND MONDAY EVENING.

SUPERIOR EAST...GALE WARNING IN EFFECT...11751 11741 11730 11610
11520 12430 11530. CHANCE OF SNOW AND RAIN SHOWERS MONDAY EVENING.
WAVES 10 TO 13 FEET SUBSIDING TO 6 TO 9 FEET OVERNIGHT. WAVES
SUBSIDING TO 3 TO 6 FEET MONDAY AND MONDAY EVENING.

$$

JS



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