Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 240206
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1006 PM EDT SUN AUG 23 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A COLD FRONT ASSOCIATED WITH A 29.5 INCH LOW PRESSURE
NEAR PICKLE LAKE ONTARIO WILL EXIT EASTERN LAKE SUPERIOR THIS
EVENING. AS THE LOW WEAKENS TO 29.7 INCHES WHILE DRIFTING TO JAMES
BAY BY TUESDAY AFTERNOON...HIGH PRESSURE OF 30.1 INCHES WILL BUILD
INTO THE NORTHERN PLAINS. THE LOW WILL LIFT INTO QUEBEC ON
WEDNESDAY...ALLOWING THE HIGH PRESSURE TO BUILD INTO THE UPPER
MISSISSIPPI VALLEY WEDNESDAY AND THEN THE GREAT LAKES ON THURSDAY. AS
THE HIGH SHIFTS TO THE MID ATLANTIC STATES ON FRIDAY...A 29.9 INCH
LOW PRESSURE TROUGH WILL APPROACH NORTHERN LAKE SUPERIOR FROM THE
NORTHWEST.

LSZ162-241015-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1006 PM EDT SUN AUG 23 2015 /906 PM CDT SUN AUG 23 2015/

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

.REST OF TONIGHT...WEST GALES TO 35 KNOTS. ISOLATED SHOWERS.
WAVES 4 TO 7 FEET.
.MONDAY...NORTHWEST GALES TO 35 KNOTS DIMINISHING TO 20 TO
30 KNOTS BY MID AFTERNOON. SCATTERED SHOWERS. WAVES SUBSIDING TO
3 TO 6 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS. WAVES
SUBSIDING TO 2 TO 4 FEET.
.TUESDAY...NORTHWEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ263-241015-
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-
1006 PM EDT SUN AUG 23 2015

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

.REST OF TONIGHT...WEST WINDS 20 TO 30 KNOTS WITH GALE FORCE GUSTS
TO 35 KNOTS. SCATTERED SHOWERS. WAVES 6 TO 10 FEET... THEN BUILDING
TO 7 TO 10 FEET.
.MONDAY...NORTHWEST GALES TO 35 KNOTS. SCATTERED SHOWERS. WAVES
SUBSIDING TO 4 TO 7 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS WITH A FEW GALE
FORCE GUSTS TO 35 KNOTS. A CHANCE OF SHOWERS. WAVES SUBSIDING TO 3
TO 5 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES 1 TO 3 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ264-241015-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
1006 PM EDT SUN AUG 23 2015

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

.REST OF TONIGHT...WEST GALES TO 35 KNOTS. SCATTERED SHOWERS.
WAVES 7 TO 10 FEET SUBSIDING TO 5 TO 8 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS WITH GALE FORCE GUSTS TO
35 KNOTS VEERING NORTHWEST BY MID AFTERNOON. NUMEROUS SHOWERS. WAVES
SUBSIDING TO 3 TO 6 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS WITH A FEW GALE
FORCE GUSTS TO 35 KNOTS. A CHANCE OF SHOWERS. WAVES 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SHOWERS.
WAVES SUBSIDING TO 2 TO 4 FEET.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KNOTS. A CHANCE OF SHOWERS.
WAVES 2 TO 4 FEET.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.

$$

LSZ265-241015-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1006 PM EDT SUN AUG 23 2015

...GALE WARNING IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY
EVENING...

.REST OF TONIGHT...WEST GALES TO 35 KNOTS. SCATTERED SHOWERS.
WAVES 3 TO 6 FEET.
.MONDAY...WEST GALES TO 35 KNOTS. SCATTERED SHOWERS THROUGH EARLY
AFTERNOON...THEN NUMEROUS SHOWERS BY MID AFTERNOON. WAVES
BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS WITH A FEW GALE FORCE
GUSTS TO 35 KNOTS. A CHANCE OF SHOWERS. WAVES 3 TO 5 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SHOWERS.
WAVES 3 TO 6 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST. WAVES
CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ266-241015-
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-
1006 PM EDT SUN AUG 23 2015

.REST OF TONIGHT...SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
20 TO 30 KNOTS AFTER MIDNIGHT. SCATTERED SHOWERS. WAVES 3 TO
6 FEET BUILDING TO 5 TO 8 FEET...THEN SUBSIDING TO 4 TO 7 FEET.
.MONDAY...WEST WINDS 20 TO 30 KNOTS. NUMEROUS SHOWERS. WAVES
4 TO 7 FEET.
.MONDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF
SHOWERS THROUGH MIDNIGHT...THEN SHOWERS LIKELY AFTER MIDNIGHT.
WAVES 3 TO 6 FEET.
.TUESDAY...NORTHWEST WINDS 20 TO 30 KNOTS. SHOWERS LIKELY THROUGH
EARLY AFTERNOON...THEN A CHANCE OF SHOWERS BY MID AFTERNOON.
WAVES 3 TO 6 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF
SHOWERS. WAVES 3 TO 5 FEET.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ267-241015-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
1006 PM EDT SUN AUG 23 2015

.REST OF TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO
15 TO 25 KNOTS AFTER MIDNIGHT. SCATTERED SHOWERS. WAVES CALM TO
2 FEET BUILDING TO 3 TO 5 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. NUMEROUS SHOWERS. WAVES 3 TO 6 FEET.
.MONDAY NIGHT...WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
3 TO 5 FEET.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. SHOWERS LIKELY THROUGH EARLY
AFTERNOON...THEN A CHANCE OF SHOWERS BY MID AFTERNOON. WAVES
3 TO 6 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES
3 TO 5 FEET.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO
1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES
SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES
CALM TO 2 FEET.
.FRIDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$
LSZ261-241015-
MAFOR 2403/
SUPERIOR WEST...GALE WARNING IN EFFECT...12650 13750 13740.
SCATTERED SHOWERS EARLY MONDAY AFTERNOON THROUGH LATE MONDAY
EVENING. WAVES 5 TO 8 FEET OVERNIGHT AND MONDAY. WAVES 3 TO 6 FEET
MONDAY EVENING.

SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11650 12640
11646 13746 11740. SCATTERED SHOWERS OVERNIGHT THROUGH LATE MONDAY
MORNING. CHANCE OF SHOWERS LATE MONDAY EVENING. WAVES 5 TO 9 FEET.

SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11640 11650
11640 11650 11656 11646 12746. SCATTERED SHOWERS OVERNIGHT
THROUGH LATE MONDAY MORNING. WAVES 3 TO 7 FEET.

SUPERIOR EAST 12520 11630 14636 11730. SCATTERED SHOWERS
OVERNIGHT THROUGH LATE MONDAY MORNING. CHANCE OF SHOWERS LATE
MONDAY EVENING. WAVES 2 TO 6 FEET.

$$

JS



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