Great Lakes Forecast
Issued by NWS

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548
FZUS63 KMQT 182001
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
401 PM EDT MON MAY 18 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

.SYNOPSIS...LOW PRESSURE OF 29.6 INCHES STRETCHING FROM WESTERN
QUEBEC SOUTHWEST TO EASTERN LAKE SUPERIOR WILL CONTINUE EASTWARD INTO
CENTRAL AND EASTERN QUEBEC AT 29.8 INCHES TONIGHT. HIGH PRESSURE OF
30.5 INCHES OVER CENTRAL CANADA WILL BUILD SOUTH ACROSS THE NORTHERN
PLAINS AND UPPER MISSISSIPPI VALLEY LATE TONIGHT INTO TUESDAY...THEN
ACROSS THE GREAT LAKES WEDNESDAY. A WEAK TROUGH OF LOW PRESSURE
AVERAGING 30.0 INCHES WILL PASS ACROSS LAKE SUPERIOR FROM THE NORTH
WEDNESDAY NIGHT INTO THURSDAY. A 30.3 INCH HIGH WILL THEN DROP SOUTH
OUT OF ONTARIO AND OVER LAKE SUPERIOR ON FRIDAY AND LINGER INTO
SATURDAY.

LSZ162-190415-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
401 PM EDT MON MAY 18 2015

.LATE THIS AFTERNOON...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH.
A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS. WAVES 1 TO 3 FEET.
.TONIGHT...NORTH WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 2 TO 4 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. WAVES CALM
TO 2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ263-190415-
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-
401 PM EDT MON MAY 18 2015

.LATE THIS AFTERNOON...SOUTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH.
PATCHY FOG. A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW.
WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
.TONIGHT...NORTH WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 6 FEET.
.TUESDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS
THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BACKING EAST AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES CALM TO
2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ264-190415-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
401 PM EDT MON MAY 18 2015

.LATE THIS AFTERNOON...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH.
PATCHY FOG. RAIN SHOWERS LIKELY...POSSIBLY MIXED WITH SNOW. WAVES 1
TO 3 FEET BUILDING TO 2 TO 4 FEET.
.TONIGHT...NORTH WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF RAIN
SHOWERS THROUGH MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 4 TO 7 FEET...THEN SUBSIDING TO 3 TO 6 FEET.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 10 TO
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.
.TUESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 10 TO
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ265-190415-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
401 PM EDT MON MAY 18 2015

.LATE THIS AFTERNOON...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF
RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTH 20 TO
30 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS THROUGH
MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO
7 FEET.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 3 TO 5 FEET.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 15 KNOTS VEERING NORTH AFTER
MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...EAST WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES CALM TO
2 FEET.
.SATURDAY...SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.

$$

LSZ266-190415-
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-
401 PM EDT MON MAY 18 2015

.LATE THIS AFTERNOON...NORTHWEST WINDS 10 TO 20 KNOTS. PATCHY FOG. A
CHANCE OF RAIN SHOWERS. WAVES 1 TO 3 FEET.
.TONIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 20 TO
30 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH
MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO
8 FEET.
.TUESDAY...NORTH GALES TO 35 KNOTS BECOMING NORTHWEST 20 TO
30 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES
4 TO 7 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET...THEN
SUBSIDING TO 1 TO 3 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTH
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...NORTH WINDS 5 TO 15 KNOTS VEERING SOUTH. WAVES CALM TO
2 FEET.
.SATURDAY...SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST. WAVES
CALM TO 2 FEET.

$$

LSZ267-190415-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
401 PM EDT MON MAY 18 2015

.LATE THIS AFTERNOON...NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF
RAIN SHOWERS. WAVES CALM TO 2 FEET.
.TONIGHT...WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS...POSSIBLY
MIXED WITH SNOW. WAVES BUILDING TO 3 TO 6 FEET.
.TUESDAY...NORTH WINDS 20 TO 30 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES BUILDING TO
4 TO 7 FEET.
.TUESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY...WEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.
.WEDNESDAY NIGHT...NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.THURSDAY...NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST BY MID
AFTERNOON. WAVES CALM TO 2 FEET.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.
.FRIDAY...NORTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES CALM
TO 2 FEET.
.SATURDAY...SOUTH WINDS 5 TO 15 KNOTS VEERING SOUTHWEST. WAVES
CALM TO 2 FEET.

$$

LSZ261-190415-
MAFOR 1821/
SUPERIOR WEST 15830 11710 11510. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF SNOW SHOWERS THROUGH EARLY EVENING. WAVES 2 TO 5 FEET.

SUPERIOR NORTH CENTRAL 11736 14840 11840 11830 11730. CHANCE OF RAIN
SHOWERS THROUGH EARLY EVENING...THEN A CHANCE OF SNOW SHOWERS THROUGH
LATE TONIGHT. WAVES 2 TO 4 FEET BUILDING TO 5 TO 7 FEET TONIGHT.
WAVES 3 TO 6 FEET TUESDAY.

SUPERIOR SOUTH CENTRAL 11710 11720 11730 13840 12740. CHANCE OF
RAIN SHOWERS THROUGH EARLY EVENING. CHANCE OF SNOW SHOWERS LATE
TONIGHT AND TUESDAY MORNING. WAVES 1 TO 3 FEET BUILDING TO 5 TO 8
FEET TONIGHT. WAVES 4 TO 7 FEET TUESDAY.

SUPERIOR EAST 12710 11720 12830 12840 11740. CHANCE OF RAIN
SHOWERS THIS EVENING. WAVES 1 TO 2 FEET BUILDING TO 3 TO 6 FEET
TONIGHT. WAVES 4 TO 7 FEET TUESDAY.

$$

KLUBER



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