Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 201956
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
356 PM EDT WED AUG 20 2014

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...29.7 INCH LOW PRESSURE CENTERED OVER EASTERN UPPER
MICHIGAN WILL SLOWLY MOVE EAST INTO SOUTHERN ONTARIO THIS EVENING
WHILE WEAKENING TO 29.9 INCHES. BROAD LOW PRESSURE OF 29.6 INCHES
WILL DEVELOP OVER THE CENTRAL AND NORTHERN HIGH PLAINS THIS
AFTERNOON WHILE 30.2 INCH HIGH PRESSURE SETTLES OVER QUEBEC. THIS
GENERAL PATTERN WILL PERSIST INTO THE END OF THE WEEK WHILE A PORTION
OF THE TROUGH EXTENDS EASTWARD ACROSS THE MIDDLE MISSISSIPPI VALLEY
ON FRIDAY. THE TROUGH WILL THEN SHIFT EASTWARD TO THE UPPER
MISSISSIPPI VALLEY AT 29.7 INCHES AS THE HIGH SETTLES OVER THE
MARITIME PROVINCES ON SATURDAY. THE LOW WILL CONTINUE EASTWARD
IMPACTING THE UPPER GREAT LAKES REGION DURING SUNDAY THROUGH MONDAY
AT 29.8 INCHES.

LSZ162-210400-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
356 PM EDT WED AUG 20 2014 /256 PM CDT WED AUG 20 2014/

.LATE THIS AFTERNOON...EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO
2 FEET.
.TONIGHT...EAST WINDS 5 TO 15 KNOTS. PATCHY FOG. WAVES CALM TO
2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. PATCHY FOG THROUGH EARLY AFTERNOON. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 3 TO 5 FEET.
.THURSDAY NIGHT...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES SUBSIDING TO 1 TO 3 FEET.
.FRIDAY...NORTHEAST WINDS 5 TO 15 KNOTS. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS THROUGH EARLY AFTERNOON. AREAS OF FOG.
WAVES SUBSIDING TO CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. AREAS OF FOG.
WAVES CALM TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST
10 TO 20 KNOTS AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...EAST WINDS 10 TO 20 KNOTS VEERING WEST. AREAS OF FOG. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS.
AREAS OF FOG. WAVES CALM TO 2 FEET.

$$

LSZ264-210400-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
356 PM EDT WED AUG 20 2014

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY...

.LATE THIS AFTERNOON...NORTHWEST WINDS LESS THAN 10 KNOTS. AREAS
OF DENSE FOG. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHWEST WINDS LESS THAN 10 KNOTS VEERING EAST AFTER
MIDNIGHT. AREAS OF FOG...LOCALLY DENSE IN THE EVENING. WAVES CALM TO
2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. WAVES CALM TO
2 FEET.
.THURSDAY NIGHT...EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST LESS
THAN 10 KNOTS AFTER MIDNIGHT. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY...NORTH WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. AREAS OF
FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. AREAS OF
FOG. WAVES CALM TO 2 FEET.

$$

LSZ263-210400-
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-
356 PM EDT WED AUG 20 2014

.LATE THIS AFTERNOON...NORTH WINDS LESS THAN 10 KNOTS. PATCHY
FOG. WAVES CALM TO 2 FEET.
.TONIGHT...EAST WINDS LESS THAN 10 KNOTS INCREASING TO 5 TO
15 KNOTS AFTER MIDNIGHT. AREAS OF FOG. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. AREAS OF FOG. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO CALM TO
2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. AREAS OF FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS 5 TO 15 KNOTS. AREAS OF FOG.
WAVES CALM TO 2 FEET.
.SATURDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST BY MID
AFTERNOON. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. AREAS OF
FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...WEST WINDS 10 TO 20 KNOTS. AREAS OF FOG. WAVES CALM TO
2 FEET.

$$

LSZ265-210400-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
356 PM EDT WED AUG 20 2014

.LATE THIS AFTERNOON...NORTH WINDS 5 TO 15 KNOTS. PATCHY FOG.
WAVES CALM TO 2 FEET.
.TONIGHT...NORTH WINDS LESS THAN 10 KNOTS VEERING EAST AFTER
MIDNIGHT. AREAS OF FOG. WAVES CALM TO 2 FEET.
.THURSDAY...EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. AREAS OF FOG. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...EAST WINDS 10 TO 20 KNOTS BECOMING SOUTHEAST
5 TO 15 KNOTS AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...NORTHEAST WINDS LESS THAN 10 KNOTS BACKING NORTH
AFTER MIDNIGHT. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY...NORTH WINDS LESS THAN 10 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. AREAS OF
FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. AREAS OF
FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ266-210400-
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-
356 PM EDT WED AUG 20 2014

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY...

.LATE THIS AFTERNOON...NORTHWEST WINDS 5 TO 15 KNOTS. AREAS OF
DENSE FOG. A SLIGHT CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHWEST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS AFTER MIDNIGHT. AREAS OF FOG...LOCALLY DENSE IN THE
EVENING. WAVES CALM TO 2 FEET.
.THURSDAY...SOUTHEAST WINDS LESS THAN 10 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON. AREAS OF FOG. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...EAST WINDS LESS THAN 10 KNOTS VEERING SOUTHEAST
AFTER MIDNIGHT. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS LESS THAN 10 KNOTS BECOMING EAST 5 TO
15 KNOTS BY MID AFTERNOON. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. AREAS OF
FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. AREAS OF
FOG. WAVES CALM TO 2 FEET.

$$

LSZ267-210400-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
356 PM EDT WED AUG 20 2014

...DENSE FOG ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY...

.LATE THIS AFTERNOON...NORTHWEST WINDS 5 TO 15 KNOTS. AREAS OF
DENSE FOG. A SLIGHT CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...WEST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN
10 KNOTS AFTER MIDNIGHT. AREAS OF FOG...LOCALLY DENSE IN THE
EVENING. WAVES CALM TO 2 FEET.
.THURSDAY...WEST WINDS LESS THAN 10 KNOTS VEERING NORTHEAST BY
MID AFTERNOON. AREAS OF FOG. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS. AREAS OF FOG. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.FRIDAY NIGHT...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST AFTER
MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BACKING EAST BY MID
AFTERNOON. AREAS OF FOG. WAVES CALM TO 2 FEET.
.SATURDAY NIGHT...SOUTHEAST WINDS 5 TO 15 KNOTS INCREASING TO
10 TO 20 KNOTS AFTER MIDNIGHT. AREAS OF FOG. A CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. AREAS OF
FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. AREAS OF
FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES CALM TO 2 FEET.

$$

LSZ261-210400-
MAFOR 2021/

SUPERIOR WEST 11300 12200 11203 11213 11210 12220. PATCHY FOG
OVERNIGHT AND IN THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS THURSDAY AFTERNOON. WAVES 1 FOOT OR LESS TONIGHT. WAVES
1 TO 4 FEET THURSDAY.

SUPERIOR NORTH CENTRAL...DENSE FOG ADVISORY IN EFFECT...13704 11103
12203 11303 11213. WAVES 1 FOOT OR LESS.

SUPERIOR SOUTH CENTRAL...DENSE FOG ADVISORY IN EFFECT...11700 11800
11803 11803 11203 11303 11313 11213. PATCHY DENSE FOG THIS AFTERNOON
AND THIS EVENING. WAVES 2 FEET OR LESS.

SUPERIOR EAST...DENSE FOG ADVISORY IN EFFECT...13704 12703 11803
11303 11203. SLIGHT CHANCE OF RAIN SHOWERS THIS EVENING. WAVES 1
FOOT OR LESS.

$$

MCD




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