Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 011326
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
926 AM EDT MON SEP 1 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.4 INCH LOW PRESSURE CENTER OVER NORTHERN ONTARIO
WILL SHIFT NORTHEAST TO NEAR JAMES BY LATE TODAY AND DRAG A LOW
PRESSURE TROUGH AVERAGING 29.7 INCHES ACROSS THE UPPER GREAT LAKES. A
30.0 INCH HIGH PRESSURE SYSTEM OVER THE CENTRAL ROCKIES WILL THEN
SHIFT EAST INTO THE MID MISSISSIPPI RIVER VALLEY ON TUESDAY AND THE
MID ATLANTIC STATES ON WEDNESDAY. EXPECT A 29.4 INCH LOW PRESSURE
SYSTEM TO DEVELOP OVER THE NORTHERN PLAINS ON WEDNESDAY AND THEN MOVE
THROUGH NORTHWEST ONTARIO ON THURSDAY AND INTO NORTHERN QUEBEC ON
FRIDAY. A 30.3 INCH HIGH PRESSURE SYSTEM WILL BUILD INTO THE NORTHERN
PLAINS ON FRIDAY.

LSZ162-012130-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
926 AM EDT MON SEP 1 2014 /826 AM CDT MON SEP 1 2014/

.REST OF TODAY...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST
10 TO 20 KNOTS BY MID AFTERNOON. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS THROUGH EARLY AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE
OF SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. A CHANCE OF SHOWERS. A CHANCE OF THUNDERSTORMS BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. PATCHY FOG.
SHOWERS LIKELY THROUGH MIDNIGHT. A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING
TO 1 TO 3 FEET.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

$$

LSZ263-012130-
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-
926 AM EDT MON SEP 1 2014

.REST OF TODAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST BY
MID AFTERNOON. PATCHY FOG. SHOWERS WITH SCATTERED
THUNDERSTORMS...THEN ISOLATED SHOWERS AND THUNDERSTORMS BY MID
AFTERNOON. WAVES 1 TO 3 FEET SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. SHOWERS LIKELY
THROUGH MIDNIGHT. A CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS
AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 2 TO 4 FEET.
.FRIDAY...WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES
SUBSIDING TO CALM TO 2 FEET.

$$

LSZ264-012130-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
926 AM EDT MON SEP 1 2014

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST BY
MID AFTERNOON. AREAS OF FOG. SHOWERS...BECOMING SCATTERED BY MID
AFTERNOON. SCATTERED THUNDERSTORMS. WAVES 1 TO 3 FEET SUBSIDING TO
CALM TO 2 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE
OF SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS
AND THUNDERSTORMS. PATCHY FOG AFTER MIDNIGHT. WAVES CALM TO
2 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS. PATCHY FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$

LSZ265-012130-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
926 AM EDT MON SEP 1 2014

.REST OF TODAY...SOUTH WINDS 5 TO 15 KNOTS VEERING WEST BY MID
AFTERNOON. SHOWERS...BECOMING SCATTERED BY MID AFTERNOON. SCATTERED
THUNDERSTORMS. WAVES 1 TO 3 FEET SUBSIDING TO CALM TO 2 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 1 TO 3 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. WAVES BUILDING TO 2 TO 4 FEET...THEN SUBSIDING TO 1 TO
3 FEET.

$$

LSZ266-012130-
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-
926 AM EDT MON SEP 1 2014

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO
15 KNOTS BY MID AFTERNOON. AREAS OF FOG. NUMEROUS SHOWERS...BECOMING
SCATTERED BY MID AFTERNOON. SCATTED THUNDERSTORMS. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO 4 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS. PATCHY FOG. WAVES BUILDING
TO 1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF
SHOWERS. PATCHY FOG AFTER MIDNIGHT. WAVES BUILDING TO 1 TO
3 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST. PATCHY FOG.
A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO
2 FEET...THEN BUILDING TO 2 TO 4 FEET.
.FRIDAY...NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. WAVES BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 1 TO
3 FEET.

$$

LSZ267-012130-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
926 AM EDT MON SEP 1 2014

.REST OF TODAY...SOUTH WINDS 10 TO 20 KNOTS. PATCHY FOG. SHOWERS
AND SCATTERED THUNDERSTORMS. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3
FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH MIDNIGHT. PATCHY FOG. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS. PATCHY FOG THROUGH EARLY
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF
SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY...SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 15 TO
25 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING
TO CALM TO 2 FEET...THEN BUILDING TO 2 TO 4 FEET.
.FRIDAY...WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS. WAVES SUBSIDING TO 1 TO 3 FEET.

$$
LSZ261-012130-
MAFOR 0115/
SUPERIOR WEST 11510 13620 14610. SCATTERED RAIN SHOWERS WITH
ISOLATED THUNDERSTORMS THIS AFTERNOON. WAVES 1 TO 2 FEET.

SUPERIOR NORTH CENTRAL 11426 11523 11623 13620 12610. SCATTERED
THUNDERSTORMS THIS AFTERNOON. AREAS OF FOG THROUGH THIS EVENING.
ISOLATED RAIN SHOWERS AND THUNDERSTORMS THIS EVENING. WAVES 1 TO 3
FEET.

SUPERIOR SOUTH CENTRAL 11426 11516 12620 14610. SCATTERED
THUNDERSTORMS THIS AFTERNOON. ISOLATED RAIN SHOWERS AND THUNDERSTORMS
THIS EVENING. WAVES 3 FEET OR LESS.

SUPERIOR EAST 12426 11523 12623 13610. AREAS OF FOG...BECOMING PATCHY
TUESDAY MORNING. SCATTERED RAIN SHOWERS LATE THIS MORNING. SCATTERED
THUNDERSTORMS THIS AFTERNOON. SCATTERED RAIN SHOWERS AND THUNDERSTORMS THIS
EVENING. WAVES 1 TO 4 FEET THIS AFTERNOON. WAVES 2 FEET OR LESS
TONIGHT THROUGH TUESDAY MORNING.

$$

KF




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