Great Lakes Forecast
Issued by NWS

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
000
FZUS63 KMQT 240207
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
1007 PM EDT SAT JUL 23 2016

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...A 29.7 INCH TROUGH OF LOW PRESSURE WILL MOVE EASTWARD
FROM THE EASTERN DAKOTAS ACROSS LAKE SUPERIOR OVERNIGHT TONIGHT AND
THROUGH THE DAY SUNDAY. A HIGH PRESSURE RIDGE OF 30.0 INCHES WILL
THEN MOVE FROM THE NORTHERN PLAINS TO THE UPPER MISSISSIPPI RIVER
VALLEY SUNDAY NIGHT INTO MONDAY. EXPECT THIS RIDGE TO SETTLE OVER THE
UPPER GREAT LAKES ON TUESDAY. A LOW PRESSURE TROUGH OF 29.9 INCHES
WILL THEN DEVELOP FROM QUEBEC AND EXTEND THROUGH THE UPPER GREAT
LAKES INTO THE CENTRAL PLAINS TUESDAY NIGHT AND WEDNESDAY. A 30.0
INCH RIDGE BUILDS OVER LAKE SUPERIOR ON THURSDAY.

LSZ162-241015-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
1007 PM EDT SAT JUL 23 2016 /907 PM CDT SAT JUL 23 2016/

.REST OF TONIGHT...EAST WINDS 10 TO 20 KNOTS VEERING SOUTH AFTER
MIDNIGHT. PATCHY FOG. SHOWERS LIKELY BY LATE EVENING. A SLIGHT
CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET...
THEN BUILDING TO 2 TO 4 FEET.
.SUNDAY NIGHT...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES 1 TO 3 FEET.
.MONDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS. A
CHANCE OF THUNDERSTORMS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.WEDNESDAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST. WAVES
CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS. 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-
1007 PM EDT SAT JUL 23 2016

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH
AFTER MIDNIGHT. PATCHY FOG. SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS MAINLY AFTER MIDNIGHT. WAVES 1 TO 3 FEET BUILDING TO 2
TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES 3 TO 5 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO 2 TO
4 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET...THEN
SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS. 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-
1007 PM EDT SAT JUL 23 2016

.REST OF TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS. PATCHY FOG. A
CHANCE OF SHOWERS BY LATE EVENING. A SLIGHT CHANCE OF
THUNDERSTORMS. SHOWERS LIKELY AFTER MIDNIGHT. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS
THROUGH EARLY AFTERNOON. PATCHY FOG. WAVES SUBSIDING TO 1 TO
3 FEET...THEN BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. WAVES 3 TO 6 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS. WAVES 3 TO 5 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF SHOWERS. A CHANCE OF THUNDERSTORMS AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST. WAVES
CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH. WAVES
CALM TO 2 FEET.

$$

LSZ265-241015-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
1007 PM EDT SAT JUL 23 2016

.REST OF TONIGHT...SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING SOUTH
10 TO 20 KNOTS AFTER MIDNIGHT. SHOWERS LIKELY AND A SLIGHT CHANCE
OF THUNDERSTORMS. WAVES CALM TO 2 FEET BUILDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH EARLY
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET BUILDING TO 1 TO 3
FEET.
.SUNDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO
5 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO CALM TO
2 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.WEDNESDAY...NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15
KNOTS. 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-
1007 PM EDT SAT JUL 23 2016

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING SOUTH
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS BY LATE
EVENING. A SLIGHT CHANCE OF THUNDERSTORMS. PATCHY FOG AFTER
MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. PATCHY FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES BUILDING TO 3 TO 5 FEET.
.SUNDAY NIGHT...WEST WINDS 15 TO 25 KNOTS. WAVES 3 TO 6 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO 20 KNOTS
BY MID AFTERNOON. WAVES 3 TO 5 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO
2 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO
15 KNOTS. 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-
1007 PM EDT SAT JUL 23 2016

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS BY LATE
EVENING...THEN SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT. WAVES CALM TO 2 FEET BUILDING TO
1 TO 3 FEET.
.SUNDAY...SOUTH WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO 20 KNOTS
BY MID AFTERNOON. PATCHY FOG. SHOWERS AND THUNDERSTORMS LIKELY
THROUGH EARLY AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS BY
MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET.
.MONDAY...WEST WINDS 15 TO 25 KNOTS. WAVES 3 TO 6 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST
AFTER MIDNIGHT. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.WEDNESDAY...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES
CALM TO 2 FEET.

$$
LSZ261-241015-
MAFOR 2403/
SUPERIOR WEST 11326 11420 13520 11530 11630 11620. PATCHY FOG
THROUGH LATE SUNDAY MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS THROUGH OVERNIGHT. WAVES 2 TO 4 FEET.

SUPERIOR NORTH CENTRAL 11320 12326 11420 11520 11530 12630.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS LATE THIS
EVENING THROUGH LATE SUNDAY MORNING. PATCHY SUNDAY MORNING THROUGH
LATE SUNDAY MORNING. WAVES 2 TO 6 FEET.

SUPERIOR SOUTH CENTRAL 11320 11326 11426 11420 11510 13620.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS LATE THIS
EVENING THROUGH LATE SUNDAY MORNING. PATCHY FOG LATE TONIGHT THROUGH
SUNDAY MORNING. WAVES 1 TO 4 FEET.

SUPERIOR EAST 11310 11320 11326 11329 11420 11510 12620. PATCHY
FOG LATE TONIGHT THROUGH EARLY SUNDAY EVENING. SLIGHT CHANCE OF
THUNDERSTORMS LATE OVERNIGHT THROUGH MID SUNDAY MORNING. CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY SUNDAY AFTERNOON. WAVES 1 TO 5 FEET.

$$

JS



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