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NWS Forecast

FZUS63 KMQT 190755
GLFLS

OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
355 AM EDT SUN APR 19 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE SUPERIOR

SYNOPSIS
29.7 INCH LOW PRESSURE OVER SOUTHWEST MINNESOTA THIS
MORNING WILL MERGE WITH ANOTHER 29.5 INCH LOW PRESSURE SYSTEM
LIFTING NORTHEAST INTO THE LOWER GREAT LAKES...RESULTING IN A DEEPER
29.2 INCH LOW PRESSURE NEAR THE UPPER GREAT LAKES ON MONDAY EVENING.
ALTHOUGH THIS LOW WILL SHIFT NORTHEAST TO NEAR JAMES BAY ON
TUESDAY...A TROUGH OF LOW PRESSURE AVERAGING 29.5 INCHES ON ITS
SOUTHWEST FLANK WILL EXTEND BACK INTO THE UPPER GREAT LAKES. THESE
FEATURES WILL REMAIN NEARLY STATIONARY BUT WEAKEN SLOWLY THROUGH
WEDNESDAY...TO THE EAST OF A 30.1 INCH HIGH PRESSURE RIDGE BUILDING
OVER THE NORTHERN PLAINS. THE LOW WILL FINALLY SHIFT EAST ON
THURSDAY...ALLOWING A 30.0 RIDGE TO MOVE INTO WESTERN LAKE SUPERIOR.

LSZ162-191600-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
355 AM EDT SUN APR 19 2015

EARLY THIS MORNING
EAST WINDS 10 TO 20 KNOTS. SCATTERED RAIN
SHOWERS. WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 4 FEET.

TODAY
EAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS
BY MID AFTERNOON. NUMEROUS RAIN SHOWERS. WAVES SUBSIDING TO 1 TO
3 FEET.

TONIGHT
NORTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO
20 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY THROUGH MIDNIGHT...
THEN A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO
CALM TO 2 FEET.

MONDAY
WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS THROUGH EARLY AFTERNOON. A SLIGHT CHANCE OF RAIN SHOWERS.
WAVES BUILDING TO 1 TO 3 FEET.

MONDAY NIGHT
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS
THROUGH MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO
2 TO 4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.

TUESDAY
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
SUBSIDING TO 1 TO 3 FEET.

TUESDAY NIGHT
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET...
THEN SUBSIDING TO 1 TO 3 FEET.

WEDNESDAY
NORTHWEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO
CALM TO 2 FEET.

THURSDAY
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.



LSZ263-191600-
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-
355 AM EDT SUN APR 19 2015

EARLY THIS MORNING
EAST WINDS 10 TO 20 KNOTS. ISOLATED RAIN
SHOWERS. WAVES 1 TO 3 FEET.

TODAY
SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. SCATTERED RAIN SHOWERS THROUGH EARLY
AFTERNOON...THEN NUMEROUS RAIN SHOWERS BY MID AFTERNOON. WAVES
BUILDING TO 4 TO 7 FEET.

TONIGHT
SOUTH WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO 15 KNOTS
AFTER MIDNIGHT. RAIN SHOWERS LIKELY. WAVES SUBSIDING TO CALM TO
2 FEET.

MONDAY
WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW
SHOWERS THROUGH EARLY AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES
BUILDING TO 3 TO 5 FEET.

MONDAY NIGHT
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH
MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO 2 TO
4 FEET.

TUESDAY
NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 3 TO 5 FEET...THEN SUBSIDING TO 2 TO 4 FEET.

TUESDAY NIGHT
NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES 2 TO 4 FEET.

WEDNESDAY
NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

THURSDAY
NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES CALM TO 2 FEET.



LSZ264-191600-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
355 AM EDT SUN APR 19 2015

EARLY THIS MORNING
SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES 2 TO
4 FEET BUILDING TO 3 TO 5 FEET.

TODAY
SOUTHEAST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS
TO 35 KNOTS BY MID AFTERNOON. SCATTERED RAIN SHOWERS THROUGH EARLY
AFTERNOON...THEN NUMEROUS RAIN SHOWERS BY MID AFTERNOON. WAVES
BUILDING TO 5 TO 9 FEET.

TONIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY. WAVES SUBSIDING TO
1 TO 3 FEET.

MONDAY
WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS
BY MID AFTERNOON. RAIN SHOWERS LIKELY THROUGH EARLY AFTERNOON...
THEN A SLIGHT CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW
BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET...THEN
BUILDING TO 2 TO 4 FEET.

MONDAY NIGHT
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS THROUGH
MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO
5 FEET...THEN SUBSIDING TO 1 TO 3 FEET.

TUESDAY
NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 2 TO 4 FEET.

TUESDAY NIGHT
NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET.

WEDNESDAY
NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

THURSDAY
NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES CALM TO 2 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.



LSZ265-191600-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
355 AM EDT SUN APR 19 2015

EARLY THIS MORNING
SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES 1 TO
3 FEET BUILDING TO 2 TO 4 FEET.

TODAY
SOUTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO
25 KNOTS BY MID AFTERNOON. ISOLATED RAIN SHOWERS. WAVES BUILDING
TO 3 TO 5 FEET.

TONIGHT
SOUTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS THROUGH
MIDNIGHT...THEN RAIN SHOWERS LIKELY AFTER MIDNIGHT. WAVES
SUBSIDING TO CALM TO 2 FEET.

MONDAY
WEST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 25 KNOTS
BY MID AFTERNOON. RAIN SHOWERS LIKELY THROUGH EARLY AFTERNOON...
THEN A SLIGHT CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW
BY MID AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.

MONDAY NIGHT
WEST WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE OF
RAIN SHOWERS. A CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES
SUBSIDING TO CALM TO 2 FEET.

TUESDAY
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO
2 TO 4 FEET.

TUESDAY NIGHT
NORTHWEST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET...THEN BUILDING TO 2 TO
4 FEET.

WEDNESDAY
NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

THURSDAY
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 1 TO
3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.



LSZ266-191600-
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-
355 AM EDT SUN APR 19 2015

EARLY THIS MORNING
SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES 2 TO
4 FEET BUILDING TO 3 TO 5 FEET.

TODAY
SOUTHEAST WINDS 20 TO 30 KNOTS. A FEW GALE FORCE GUSTS TO
35 KNOTS BY MID AFTERNOON. ISOLATED RAIN SHOWERS BY MID AFTERNOON.
WAVES BUILDING TO 5 TO 9 FEET.

TONIGHT
SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO
15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS THROUGH
MIDNIGHT...THEN RAIN SHOWERS LIKELY AFTER MIDNIGHT. WAVES
SUBSIDING TO CALM TO 2 FEET.

MONDAY
EAST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO 20 KNOTS
BY MID AFTERNOON. RAIN SHOWERS LIKELY THROUGH EARLY AFTERNOON...
THEN A CHANCE OF RAIN SHOWERS...POSSIBLY MIXED WITH SNOW BY MID
AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET.

MONDAY NIGHT
WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF
RAIN AND SNOW SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.

TUESDAY
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS
BY MID AFTERNOON. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO
3 TO 5 FEET.

TUESDAY NIGHT
NORTHWEST WINDS 15 TO 25 KNOTS INCREASING TO
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. WAVES
3 TO 5 FEET.

WEDNESDAY
NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.

THURSDAY
NORTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.



LSZ267-191600-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
355 AM EDT SUN APR 19 2015

EARLY THIS MORNING
SOUTHEAST WINDS 15 TO 25 KNOTS. WAVES CALM
TO 2 FEET.

TODAY
SOUTHEAST WINDS 20 TO 30 KNOTS. WAVES BUILDING TO 2 TO
4 FEET.

TONIGHT
SOUTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 10 TO
20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS THROUGH
MIDNIGHT...THEN RAIN SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO
CALM TO 2 FEET.

MONDAY
EAST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO 20 KNOTS
BY MID AFTERNOON. RAIN SHOWERS LIKELY THROUGH EARLY AFTERNOON...
THEN A CHANCE OF RAIN SHOWERS BY MID AFTERNOON. WAVES CALM TO
2 FEET.

MONDAY NIGHT
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN
SHOWERS...POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 2 TO
4 FEET...THEN SUBSIDING TO 1 TO 3 FEET.

TUESDAY
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 3 TO 5 FEET.

TUESDAY NIGHT
WEST WINDS 15 TO 25 KNOTS. A CHANCE OF SNOW
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.

WEDNESDAY
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO
2 FEET.

THURSDAY
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
1 TO 3 FEET...THEN SUBSIDING TO CALM TO 2 FEET.

NOTE...WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.



LSZ261-191600-
MAFOR 1909/
SUPERIOR WEST 12220 11226 12216 11206 11706 11610. A CHANCE OF RAIN
SHOWERS LATE TONIGHT. WAVES 2 TO 4 FEET.

SUPERIOR NORTH CENTRAL 11320 11340 12350 11356 11346 11336 11316.
SCATTERED RAIN SHOWERS THIS AFTERNOON. WAVES 2 TO 4 FEET BUILDING
TO 6 TO 9 FEET TODAY. WAVES 5 TO 8 FEET SUBSIDING TO 2 TO 4 FEET
TONIGHT.

SUPERIOR SOUTH CENTRAL 11320 11330 13340 11330 11320 11306.
A CHANCE OF RAIN SHOWERS AFTER MIDNIGHT TONIGHT. WAVES 2 TO 5 FEET.

SUPERIOR EAST 11320 15340 11326. A CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET
TODAY. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO 3 FEET TONIGHT.



07