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 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
724
FZUS63 KMQT 251403
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1003 AM EDT SUN SEP 25 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 30.3 INCH HIGH PRESSURE SYSTEM OVER FAR WESTERN QUEBEC
WILL DRIFT EASTWARD THROUGH TONIGHT AS A 29.6 INCH LOW PRESSURE OVER
FAR EASTERN MANITOBA LATE THIS MORNING MOVES TO NORTHWEST ONTARIO BY
THIS EVENING. EXPECT THIS LOW TO THEN SHIFT SOUTHEASTWARD ACROSS
ONTARIO ON MONDAY AND MOVE INTO NORTHERN LAKE SUPERIOR BY MONDAY
EVENING WHILE DEEPENING TO 29.4 INCHES. THE LOW WILL THEN SLOWLY
DRIFT TO EASTERN LAKE SUPERIOR ON TUESDAY AND WEAKEN TO 29.6 INCHES
BY TUESDAY EVENING. THE LOW WILL CONTINUE TO WEAKEN TO 29.9 INCHES
WEDNESDAY AFTERNOON AS IT MOVES TO LOWER MICHIGAN. HIGH PRESSURE OF
30.3 INCHES WILL SETTLE ACROSS THE UPPER MISSISSIPPI VALLEY AND UPPER
GREAT LAKES FOR THURSDAY.

LSZ162-252215-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1003 AM EDT SUN SEP 25 2016 /903 AM CDT SUN SEP 25 2016/

...GALE WATCH IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY
NIGHT...

.REST OF TODAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST
BY MID AFTERNOON. NUMEROUS SHOWERS...BECOMING SCATTERED BY LATE
AFTERNOON. ISOLATED THUNDERSTORMS. WAVES 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS VEERING WEST AFTER
MIDNIGHT. SCATTERED SHOWERS. WAVES BUILDING TO 3 TO 6 FEET.
.MONDAY...WEST GALES TO 35 KNOTS BECOMING NORTHWEST GALES TO
40 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF THUNDERSTORMS
THROUGH EARLY AFTERNOON. SHOWERS LIKELY. WAVES BUILDING TO 5 TO
8 FEET.
.MONDAY NIGHT...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO
3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS. WAVES SUBSIDING
TO 2 TO 4 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS. WAVES 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING WEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST. WAVES
CALM TO 2 FEET.

$$

LSZ263-252215-
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-
1003 AM EDT SUN SEP 25 2016

...GALE WATCH IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY
NIGHT...

.REST OF TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING SOUTH
20 TO 30 KNOTS BY MID AFTERNOON. SCATTERED SHOWERS...BECOMING
NUMEROUS BY MID AFTERNOON. ISOLATED THUNDERSTORMS IN THE AFTERNOON.
WAVES 1 TO 3 FEET BUILDING TO 4 TO 7 FEET.
.TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO
30 KNOTS AFTER MIDNIGHT. ISOLATED THUNDERSTORMS THROUGH MIDNIGHT.
SCATTERED SHOWERS. WAVES BUILDING TO 5 TO 8 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO
40 KNOTS BY MID AFTERNOON. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. WAVES BUILDING TO 7 TO 10 FEET.
.MONDAY NIGHT...NORTHWEST GALES TO 40 KNOTS. SHOWERS LIKELY.
WAVES SUBSIDING TO 5 TO 8 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. SHOWERS LIKELY THROUGH
EARLY AFTERNOON...THEN A CHANCE OF SHOWERS BY MID AFTERNOON.
WAVES SUBSIDING TO 4 TO 7 FEET.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS BACKING WEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM TO
2 FEET.

$$

LSZ264-252215-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1003 AM EDT SUN SEP 25 2016

...GALE WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE MONDAY
NIGHT...

.REST OF TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS BY EARLY AFTERNOON. SCATTERED SHOWERS BY NOON...THEN
SHOWERS AND ISOLATED THUNDERSTORMS BY MID AFTERNOON. WAVES 3 TO 5
FEET BUILDING TO 6 TO 10 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS AFTER MIDNIGHT. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS THROUGH MIDNIGHT...THEN SCATTERED SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET...THEN BUILDING TO 4 TO 7 FEET.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST GALES TO
35 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON...THEN SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS BY MID AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET.
.MONDAY NIGHT...NORTHWEST GALES TO 35 KNOTS. SHOWERS. WAVES
BUILDING TO 6 TO 10 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS VEERING NORTH BY MID
AFTERNOON. SHOWERS LIKELY. WAVES 6 TO 9 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO
2 TO 4 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-252215-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1003 AM EDT SUN SEP 25 2016

...GALE WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE MONDAY
NIGHT...

.REST OF TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS BY MID AFTERNOON. SCATTERED SHOWERS BY NOON...THEN
SHOWERS AND ISOLATED THUNDERSTORMS BY MID AFTERNOON. WAVES 3 TO 5
FEET BUILDING TO 4 TO 8 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS AFTER MIDNIGHT. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS THROUGH MIDNIGHT...THEN SCATTERED SHOWERS AFTER
MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET.
.MONDAY...SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST GALES TO
35 KNOTS BY MID AFTERNOON. SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET.
.MONDAY NIGHT...WEST GALES TO 40 KNOTS BECOMING NORTHWEST GALES
TO 35 KNOTS AFTER MIDNIGHT. SHOWERS. WAVES BUILDING TO 6 TO
9 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. SHOWERS. WAVES
SUBSIDING TO 5 TO 8 FEET...THEN BUILDING TO 6 TO 9 FEET.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-252215-
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-
1003 AM EDT SUN SEP 25 2016

...GALE WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE MONDAY
NIGHT...

.REST OF TODAY...SOUTHEAST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE
GUSTS TO 35 KNOTS IN THE AFTERNOON. ISOLATED SHOWERS...THEN NUMEROUS
SHOWERS AND ISOLATED THUNDERSTORMS BY MID AFTERNOON. WAVES 3 TO 5
FEET BUILDING TO 6 TO 9 FEET.
.TONIGHT...SOUTH WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS AFTER MIDNIGHT. A FEW GALE FORCE GUSTS TO 35 KNOTS IN THE
EVENING. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS THROUGH
MIDNIGHT...THEN SCATTERED SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO
3 TO 6 FEET.
.MONDAY...SOUTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST GALES TO
35 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS THROUGH EARLY
AFTERNOON...THEN SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS BY MID AFTERNOON. WAVES BUILDING TO 4 TO 8 FEET.
.MONDAY NIGHT...WEST GALES TO 35 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF THUNDERSTORMS THROUGH
MIDNIGHT. SHOWERS. WAVES BUILDING TO 8 TO 12 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. SHOWERS LIKELY. WAVES
SUBSIDING TO 6 TO 9 FEET.
.TUESDAY NIGHT...NORTH WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES SUBSIDING TO
3 TO 5 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ267-252215-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1003 AM EDT SUN SEP 25 2016

...GALE WARNING IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH LATE
TONIGHT...

.REST OF TODAY...SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS WITH A FEW GALE FORCE GUSTS TO 35 KNOTS BY MID
AFTERNOON. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS BY MID
AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET.
.TONIGHT...SOUTHEAST GALES TO 35 KNOTS BECOMING SOUTH 20 TO
30 KNOTS AFTER MIDNIGHT. PERIODS OF SHOWERS AND ISOLATED
THUNDERSTORMS. WAVES BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO
3 TO 5 FEET.
.MONDAY...SOUTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. SHOWERS LIKELY. WAVES SUBSIDING TO
2 TO 4 FEET...THEN BUILDING TO 7 TO 10 FEET.
.MONDAY NIGHT...WEST WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF
THUNDERSTORMS THROUGH MIDNIGHT. SHOWERS LIKELY. WAVES BUILDING TO
8 TO 12 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. SHOWERS THROUGH EARLY AFTERNOON...THEN
A CHANCE OF SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO 5 TO
8 FEET.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET.
.WEDNESDAY...NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.

$$
LSZ261-252215-
MAFOR 2515/
SUPERIOR WEST 11326 11426 12520 11530 11640 12646. ISOLATED
THUNDERSTORMS THIS AFTERNOON. SCATTERED SHOWERS LATE THIS AFTERNOON
AND TONIGHT. WAVES 1 TO 4 FEET THIS AFTERNOON FEET BUILDING TO 4 TO
7 FEET TONIGHT AND MONDAY MORNING.

SUPERIOR NORTH CENTRAL 11340 12346 11446 11420 13530. ISOLATED
THUNDERSTORMS LATE THIS AFTERNOON AND THIS EVENING. SCATTERED
SHOWERS LATE THIS EVENING THROUGH MONDAY MORNING. WAVES 3 TO 6 FEET
BUILDING TO 7 TO 10 FEET THIS AFTERNOON. WAVES 5 TO 10 FEET TONIGHT
AND MONDAY MORNING.

SUPERIOR SOUTH CENTRAL 11336 12346 11446 11430 11520 12530.
ISOLATED THUNDERSTORMS LATE THIS AFTERNOON AND THIS EVENING.
SCATTERED SHOWERS OVERNIGHT THROUGH MONDAY MORNING. WAVES 3 TO 7
FEET.

SUPERIOR EAST...GALE WARNING IN EFFECT...11330 11340 11346 12356
11446 11426 11526. SCATTERED SHOWERS LATE THIS AFTERNOON. ISOLATED
THUNDERSTORMS LATE THIS AFTERNOON THROUGH MONDAY MORNING. WAVES 3 TO
7 FEET.

$$

KLUBER



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