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 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS63 KMQT 240146
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
946 PM EDT THU JUL 23 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.9 INCH HIGH PRESSURE RIDGE SPREADING ACROSS MUCH OF
THE EASTERN THIRD OF THE UNITED STATES WILL DRIFT EASTWARD THROUGH
FRIDAY BEFORE MOVING OFF THE EAST COAST ON SATURDAY. MEANWHILE...A
29.6 INCH LOW PRESSURE OVER THE NORTHERN PLAINS WILL MOVE NORTHEAST
THROUGH NORTHWEST ONTARIO ON FRIDAY TO NEAR JAMES BAY ON SATURDAY.
THIS LOW WILL DRAG A COLD FRONT ACROSS LAKE SUPERIOR FRIDAY NIGHT.
EXPECT A TRAILING 29.9 INCH HIGH PRESSURE OVER THE NORTHERN PLAINS ON
SATURDAY TO DRIFT INTO THE WESTERN GREAT LAKES ON SUNDAY AND OVER THE
LOWER GREAT LAKES ON MONDAY. THIS RIDGE WILL SLIDE SLOWLY TO THE EAST
TUESDAY NIGHT INTO WEDNESDAY AS LOW PRESSURE OF 29.4 INCHES DEVELOPS
OVER SOUTHERN MANITOBA AND TRACKS INTO NORTHERN ONTARIO.

LSZ162-241000-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
946 PM EDT THU JUL 23 2015

.REST OF TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS...ESPECIALLY IN THE AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING WEST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ263-241000-
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-
946 PM EDT THU JUL 23 2015

.REST OF TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS LATE. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST. WAVES CALM
TO 2 FEET.
.TUESDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ264-241000-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
946 PM EDT THU JUL 23 2015

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH
AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. PATCHY FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS BY LATE
MORNING. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. PATCHY FOG. SHOWERS AND THUNDERSTORMS
LIKELY THROUGH MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.SATURDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.

$$

LSZ265-241000-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
946 PM EDT THU JUL 23 2015

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS BY
NOON...THEN A CHANCE OF SHOWERS AND THUNDERSTORMS BY MID AFTERNOON.
WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES CALM
TO 2 FEET.
.TUESDAY...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.

$$

LSZ266-241000-
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-
946 PM EDT THU JUL 23 2015

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH
AFTER MIDNIGHT. PATCHY FOG NORTH AFTER MIDNIGHT. WAVES CALM TO 2
FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. PATCHY FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS BY
LATE AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON.
WAVES 1 TO 3 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING TO
CALM TO 2 FEET.

$$

LSZ267-241000-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
946 PM EDT THU JUL 23 2015

.REST OF TONIGHT...EAST WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. WAVES CALM
TO 2 FEET.
.FRIDAY...SOUTHEAST WINDS 5 TO 15 KNOTS. PATCHY FOG. A CHANCE OF
SHOWERS AND THUNDERSTORMS BY LATE AFTERNOON. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST AFTER
MIDNIGHT. PATCHY FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.SATURDAY...WEST WINDS 10 TO 20 KNOTS. PATCHY FOG THROUGH EARLY
AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH
EARLY AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET...THEN SUBSIDING
TO CALM TO 2 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTH WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.MONDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES CALM TO
2 FEET.
.TUESDAY...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$
LSZ261-241000-
MAFOR 2403/
SUPERIOR WEST 12400 14410 11500 11610. CHANCE OF SHOWERS AND
THUNDERSTORMS LATE TONIGHT AND FRIDAY. WAVES 1 FOOT OR LESS.

SUPERIOR NORTH CENTRAL 11310 11410 12400 11410 12310 11419.
PATCHY FOG OVERNIGHT THROUGH FRIDAY EVENING. CHANCE OF SHOWERS AND
THUNDERSTORMS LATE FRIDAY MORNING AND FRIDAY AFTERNOON. WAVES 2 FEET
OR LESS.

SUPERIOR SOUTH CENTRAL 12300 12400 11410 12310 11400. CHANCE OF
SHOWERS AND THUNDERSTORMS LATE FRIDAY AFTERNOON AND FRIDAY EVENING.
WAVES 1 FOOT OR LESS.

SUPERIOR EAST 14300 11300 12310 11410. PATCHY FOG OVERNIGHT THROUGH
FRIDAY EVENING. CHANCE OF SHOWERS AND THUNDERSTORMS FRIDAY EVENING.
WAVES 2 FEET OR LESS.

$$

KLUBER


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