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
000
FZUS63 KMQT 232105
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
405 PM EST THU FEB 23 2017

.SYNOPSIS...A RIDGE AXIS AVERAGING 30.0 INCHES WILL DRIFT EASTWARD
ACROSS THE UPPER GREAT LAKES TONIGHT. MEANWHILE...29.3 INCH LOW
PRESSURE ORGANIZING IN THE CENTRAL PLAINS WILL MOVE
NORTHEASTWARD...CROSSING LOWER MICHIGAN LATE FRIDAY AFTERNOON AND
EVENING BEFORE REACHING WESTERN QUEBEC BY LATE SATURDAY. THE LOW
DEEPENS TO 29.2 INCHES OVER NORTHERN LAKE HURON ON SATURDAY
MORNING. IN ITS WAKE...EXPECT A 30.3 INCH HIGH PRESSURE CENTERED
ACROSS THE SOUTHERN PLAINS ON SATURDAY TO DRIFT INTO THE SOUTHEAST
STATES ON SUNDAY...EXTENDING A 29.9 INCH RIDGE AXIS INTO THE
UPPER LAKES ON SATURDAY NIGHT. A 29.8 INCH LOW PRESSURE SYSTEM
WILL THEN MOVE ACROSS LAKE SUPERIOR ON SUNDAY. A 30.1 INCH HIGH
PRESSURE WILL FOLLOW ACROSS THE GREAT LAKES ON MONDAY. A WEAK 29.9
INCH TROUGH MOVES OVER THE UPPER GREAT LAKES ON MONDAY
NIGHT...FOLLOWED BY A 30.0 INCH HIGH EXPANDING OVER THE GREAT
LAKES ON TUESDAY.

LSZ162-240515-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
405 PM EST THU FEB 23 2017 /305 PM CST THU FEB 23 2017/

...GALE WARNING IN EFFECT FROM FRIDAY MORNING THROUGH LATE FRIDAY
NIGHT...

.LATE THIS AFTERNOON...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2
FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.
WAVES BUILDING TO 4 TO 7 FEET.
.FRIDAY...NORTHEAST GALES TO 35 KNOTS INCREASING TO 40 KNOTS BY
THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW. WAVES BUILDING
TO 7 TO 10 FEET.
.FRIDAY NIGHT...NORTH GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET.
.SATURDAY...NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. FREEZING SPRAY IN THE MORNING. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.SATURDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES 1 TO 3 FEET.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST AFTER
MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A CHANCE
OF SNOW SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS. RAIN SHOWERS LIKELY. SNOW SHOWERS LIKELY. WAVES
BUILDING TO 1 TO 3 FEET.

$$

LSZ263-240515-
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-
405 PM EST THU FEB 23 2017

...GALE WARNING IN EFFECT FROM FRIDAY MORNING THROUGH LATE FRIDAY
NIGHT...

.LATE THIS AFTERNOON...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2
FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS BY MIDNIGHT. FREEZING SPRAY AFTER MIDNIGHT. A SLIGHT
CHANCE OF SNOW LATE. WAVES BUILDING TO 4 TO 7 FEET.
.FRIDAY...NORTHEAST GALES TO 35 KNOTS INCREASING TO 40 KNOTS BY
THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW IN THE MORNING.
SNOW LIKELY IN THE AFTERNOON. WAVES BUILDING TO 7 TO 10 FEET.
.FRIDAY NIGHT...NORTH GALES TO 35 KNOTS. FREEZING SPRAY. SNOW
SHOWERS. WAVES SUBSIDING TO 5 TO 8 FEET.
.SATURDAY...NORTHWEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET.
.SATURDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS
IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO
1 TO 3 FEET.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO
1 TO 3 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. RAIN SHOWERS LIKELY. SNOW
SHOWERS LIKELY. WAVES BUILDING TO 2 TO 4 FEET.

$$

LSZ264-240515-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
405 PM EST THU FEB 23 2017

...GALE WARNING IN EFFECT FROM FRIDAY AFTERNOON THROUGH SATURDAY
EVENING...

.LATE THIS AFTERNOON...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM
TO 2 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW LATE. WAVES
BUILDING TO 3 TO 5 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS BY EARLY AFTERNOON. FREEZING SPRAY. A SLIGHT CHANCE OF
SNOW IN THE MORNING. SNOW LIKELY IN THE AFTERNOON. WAVES BUILDING
TO 5 TO 8 FEET.
.FRIDAY NIGHT...NORTHEAST GALES TO 40 KNOTS BACKING NORTH AFTER
MIDNIGHT. FREEZING SPRAY. SNOW SHOWERS. WAVES BUILDING TO 6 TO
10 FEET.
.SATURDAY...NORTH GALES TO 35 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. FREEZING SPRAY. SNOW SHOWERS LIKELY IN THE MORNING. A
CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES BUILDING TO 7 TO
10 FEET...THEN SUBSIDING TO 4 TO 7 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. A
CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.SUNDAY NIGHT...WEST 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.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 20 TO
30 KNOTS. A CHANCE OF SNOW SHOWERS...POSSIBLY MIXED WITH RAIN...
THEN SNOW SHOWERS LIKELY. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.

$$

LSZ265-240515-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
405 PM EST THU FEB 23 2017

...GALE WARNING IN EFFECT FROM FRIDAY AFTERNOON THROUGH SATURDAY
EVENING...

.LATE THIS AFTERNOON...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES 1 TO
3 FEET SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW LATE. WAVES BUILDING TO
3 TO 5 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS BY MID AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW IN
THE MORNING. SNOW LIKELY IN THE AFTERNOON. WAVES BUILDING TO 6 TO
9 FEET.
.FRIDAY NIGHT...NORTHEAST GALES TO 35 KNOTS BACKING NORTH AFTER
MIDNIGHT. FREEZING SPRAY. A SLIGHT CHANCE OF FREEZING RAIN IN THE
EVENING. SNOW SHOWERS. WAVES 6 TO 9 FEET.
.SATURDAY...NORTHWEST GALES TO 35 KNOTS. FREEZING SPRAY. SNOW
SHOWERS IN THE MORNING. A CHANCE OF SNOW SHOWERS IN THE
AFTERNOON. WAVES BUILDING TO 7 TO 10 FEET...THEN SUBSIDING TO
5 TO 8 FEET.
.SATURDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS BACKING WEST
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.
.SUNDAY...WEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING
TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. RAIN SHOWERS LIKELY. SNOW
SHOWERS LIKELY. WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING
TO 2 TO 4 FEET.

$$

LSZ266-240515-
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-
405 PM EST THU FEB 23 2017

...GALE WARNING IN EFFECT FROM FRIDAY AFTERNOON THROUGH SATURDAY
EVENING...

.LATE THIS AFTERNOON...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES 1 TO
3 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW LATE.
WAVES BUILDING TO 3 TO 5 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
40 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A CHANCE OF SNOW IN
THE MORNING. SNOW LIKELY IN THE AFTERNOON. WAVES BUILDING TO 6 TO
9 FEET.
.FRIDAY NIGHT...NORTHEAST GALES TO 40 KNOTS BACKING NORTH AFTER
MIDNIGHT. FREEZING SPRAY. SNOW SHOWERS...POSSIBLY MIXED WITH
FREEZING RAIN. WAVES 6 TO 10 FEET.
.SATURDAY...NORTH GALES TO 40 KNOTS BACKING NORTHWEST IN THE
AFTERNOON. FREEZING SPRAY. SNOW SHOWERS. WAVES BUILDING TO 8 TO
12 FEET.
.SATURDAY NIGHT...NORTHWEST GALES TO 35 KNOTS BECOMING WEST 20 TO
30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY IN THE EVENING. SNOW
SHOWERS LIKELY IN THE EVENING...THEN A CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO 4 TO 7 FEET.
.SUNDAY...WEST WINDS 15 TO 25 KNOTS. SNOW SHOWERS LIKELY. WAVES
SUBSIDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE
EVENING...THEN A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES
2 TO 4 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES SUBSIDING TO CALM TO 2 FEET...THEN BUILDING TO 2 TO 4 FEET.
.TUESDAY...EAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS. RAIN AND SNOW SHOWERS LIKELY. WAVES 2 TO 4 FEET.

$$

LSZ267-240515-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
405 PM EST THU FEB 23 2017

...GALE WARNING IN EFFECT FROM FRIDAY AFTERNOON THROUGH SATURDAY
EVENING...

.LATE THIS AFTERNOON...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES 1 TO
3 FEET.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS IN THE AFTERNOON. A CHANCE OF SNOW IN THE MORNING...THEN
SNOW LIKELY. WAVES BUILDING TO 4 TO 7 FEET.
.FRIDAY NIGHT...NORTHEAST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. SNOW SHOWERS...POSSIBLY MIXED WITH
FREEZING RAIN. WAVES BUILDING TO 6 TO 9 FEET...THEN SUBSIDING TO
4 TO 7 FEET.
.SATURDAY...NORTH GALES TO 35 KNOTS BECOMING NORTHWEST GALES TO
40 KNOTS IN THE AFTERNOON. FREEZING SPRAY. A SLIGHT CHANCE OF
FREEZING RAIN IN THE MORNING. SNOW SHOWERS. WAVES BUILDING TO
9 TO 12 FEET.
.SATURDAY NIGHT...NORTHWEST GALES TO 35 KNOTS BECOMING WEST 20 TO
30 KNOTS AFTER MIDNIGHT. FREEZING SPRAY. SNOW SHOWERS LIKELY.
WAVES SUBSIDING TO 4 TO 7 FEET.
.SUNDAY...WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO 25 KNOTS
IN THE AFTERNOON. SNOW SHOWERS LIKELY. WAVES SUBSIDING TO 2 TO
4 FEET.
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO
10 TO 20 KNOTS AFTER MIDNIGHT. SNOW SHOWERS LIKELY IN THE
EVENING...THEN A CHANCE OF SNOW SHOWERS. WAVES 2 TO 4 FEET.
.MONDAY...SOUTH WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 1 TO 3 FEET.
.TUESDAY...EAST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS...THE SNOW SHOWERS POSSIBLY MIXED WITH RAIN. WAVES 1 TO 3
FEET.

$$

LSZ261-240515-
MAFOR 2322/
SUPERIOR WEST...GALE WARNING IN EFFECT...11710 11820 11130 12140
13150. FREEZING SPRAY LATE TONIGHT AND FRIDAY. CHANCE OF SNOW
FRIDAY. WAVES 1 TO 3 FEET BUILDING TO 3 TO 6 FEET TONIGHT. WAVES
BUILDING TO 7 TO 10 FEET FRIDAY.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11720 12830
11840 12140 11150 11157. FREEZING SPRAY FRIDAY. CHANCE OF SNOW
EARLY FRIDAY AFTERNOON. WAVES 2 TO 5 FEET TONIGHT BUILDING TO 5 TO
8 FEET FRIDAY.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11710 11720
11820 11830 12140 11147 11157. CHANCE OF SNOW OVERNIGHT AND
FRIDAY MORNING. WAVES 2 TO 4 FEET TONIGHT BUILDING TO 5 TO 8 FEET
FRIDAY.

SUPERIOR EAST...GALE WARNING IN EFFECT...12720 11820 11830 12140
12157. CHANCE OF SNOW LATE FRIDAY MORNING. WAVES 2 TO 4 FEET
TONIGHT BUILDING TO 4 TO 7 FEET FRIDAY.

$$

KLUBER



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