Great Lakes Forecast
Issued by NWS

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000
FZUS63 KMQT 221342
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
942 AM EDT FRI MAY 22 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...30.3 INCH HIGH PRESSURE ACROSS THE UPPER GREAT LAKES
WILL EXIT TO THE MID ATLANTIC STATES BY SATURDAY MORNING AT 30.5
INCHES. A WEAK 30.1 INCH TROUGH WILL BRUSH EASTERN LAKE SUPERIOR
SATURDAY AS IT TRACKS SOUTHEASTWARD OVER ONTARIO. A 30.2 INCH RIDGE
WILL RETURN TO THE GREAT LAKES REGION SATURDAY NIGHT INTO SUNDAY.
EXPECT 29.8 INCH LOW PRESSURE OVER THE CENTRAL AND SOUTHERN PLAINS
SUNDAY MORNING TO DEEPEN TO AROUND 29.7 INCHES ACROSS SOUTHERN
MINNESOTA AND IOWA BY DAYBREAK MONDAY...AND 29.6 INCHES OVER WESTERN
LAKE SUPERIOR DURING THE DAYTIME HOURS MONDAY. THIS LOW WILL MERGE
WITH A 29.6 INCH LOW PUSHING ACROSS CENTRAL CANADA MONDAY NIGHT AND
THEN LINGER ACROSS WESTERN LAKE SUPERIOR THROUGH TUESDAY.

LSZ162-222145-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
942 AM EDT FRI MAY 22 2015

.REST OF TODAY...EAST WINDS LESS THAN 10 KNOTS BECOMING SOUTHEAST
5 TO 15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO 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 SOUTHEAST BY MID
AFTERNOON. A CHANCE OF RAIN SHOWERS BY MID AFTERNOON. WAVES CALM
TO 2 FEET.
.SUNDAY NIGHT...EAST WINDS LESS THAN 10 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTH. RAIN SHOWERS
LIKELY...THEN A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES CALM TO 2 FEET.

$$

LSZ263-222145-
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-
942 AM EDT FRI MAY 22 2015

.REST OF TODAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
2 TO 4 FEET.
.SATURDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO
5 TO 15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM
TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST AFTER
MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. A CHANCE OF
RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. A CHANCE
OF RAIN SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ264-222145-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
942 AM EDT FRI MAY 22 2015

.REST OF TODAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY...SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
3 TO 5 FEET.
.SATURDAY NIGHT...WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 15 KNOTS BACKING SOUTHEAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. A CHANCE OF
RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. A CHANCE
OF RAIN SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ265-222145-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
942 AM EDT FRI MAY 22 2015

.REST OF TODAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST BY
MID AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.SATURDAY...WEST 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.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. 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. A CHANCE OF RAIN
SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING SOUTH 10 TO
20 KNOTS. A CHANCE OF SHOWERS. WAVES CALM TO 2 FEET.
.TUESDAY...WEST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES CALM TO 2 FEET.

$$

LSZ266-222145-
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-
942 AM EDT FRI MAY 22 2015

.REST OF TODAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST BY MID
AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH EARLY
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.
.SUNDAY...SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.SUNDAY NIGHT...SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
SHOWERS. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. A CHANCE
OF RAIN SHOWERS...THEN RAIN SHOWERS LIKELY. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. A CHANCE
OF RAIN SHOWERS. WAVES CALM TO 2 FEET.

$$

LSZ267-222145-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
942 AM EDT FRI MAY 22 2015

.REST OF TODAY...NORTH WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.TONIGHT...SOUTH WINDS 5 TO 15 KNOTS. WAVES BUILDING TO 1 TO
3 FEET.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS
THROUGH EARLY AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.SATURDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST
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. A CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTH. A CHANCE
OF RAIN SHOWERS...THEN RAIN SHOWERS LIKELY. WAVES CALM TO 2 FEET.
.TUESDAY...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. A CHANCE
OF RAIN SHOWERS. WAVES CALM TO 2 FEET.

$$
LSZ261-222145-
MAFOR 2215/
SUPERIOR WEST 11200 13300 11400 13510. WAVES 1 TO 3 FEET.

SUPERIOR NORTH CENTRAL 12310 14410 12520. WAVES 1 FOOT OR LESS
THIS AFTERNOON. WAVES 1 TO 3 FEET TONIGHT. WAVES 2 TO 5 FEET
SATURDAY.

SUPERIOR SOUTH CENTRAL 11210 13310 11410 11420 12520. WAVES 1 TO
3 FEET.

SUPERIOR EAST 11800 11600 11500 11400 11410 11420 12520. WAVES 1
TO 3 FEET THIS AFTERNOON AND TONIGHT. WAVES 2 TO 4 FEET SATURDAY
MORNING.

$$

JS



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