NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
2:54 PM Sunday April 30
W2 WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS, WHICH IS THE AVERAGE OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL OCCASIONALLY BE ENCOUNTERED.W2 SYNOPSIS, A 304 INCH HIGH OVER JAMES BAY WILL WEAKEN AS IT CONTINUES EAST ACROSS QUEBEC.W2 LOW PRESSURE OF 294 INCHES OVER CENTRAL KANSAS WILL DEEPEN TO 293 INCHES AS IT REACHES NORTHERN IOWA OVERNIGHT.W2 THE LOW WILL THEN CONTINUE NORTHEAST INTO WESTERN QUEBEC BY TUESDAY AFTERNOON.W2 WEAK HIGH PRESSURE OF 300 INCHES WILL DEVELOP OVER THE CENTRAL PLAINS IN THE WAKE OF THIS LOW, THEN STRENGTHEN TO 303 INCHES AS IT MOVES NORTHEAST TO LAKE MICHIGAN BY WEDNESDAY AFTERNOON.W2 A 297 INCH LOW IS FORECAST TO FORM OVER THE SOUTHERN MISSISSIPPI VALLEY LATE WEDNESDAY NIGHT AND DEEPEN TO AROUND 292 AS IT TRACKS UP THE OHIO VALLEY TO QUEBEC THROUGH THE END OF THIS WEEK.W2 LMZ261-362-364-366-563-565-010330.W2 LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NAUTICAL MILES OFFSHORE TO MID LAKE.W2 LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH FOX ISLAND 5 NAUTICAL MILES OFFSHORE.W2 LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NAUTICAL MILES OFFSHORE TO MID LAKE.W2 LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NAUTICAL MILES OFFSHORE TO MID LAKE.W2 LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI.W2 LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NAUTICAL MILES OFFSHORE TO MID LAKE.W2 two rivers wi to manistee mi north, , gale warning in effect through late tonight, tonight, northeast winds to 30 knots becoming east gales to 35 knots.W2 rain showers likely this evening, then rain showers and slight chance of thunderstorms overnight.W2 waves 7 to 10 feet occasionally to 13 feet.W2 monday, southeast winds to 30 knots becoming south.W2 chance of rain showers.W2 waves 4 to 7 feet occasionally to 9 feet.W2 monday night, south winds to 30 knots becoming west.W2 rain showers likely in the evening, then chance of rain showers overnight.W2 waves 4 to 7 feet occasionally to 9 feet.W2 tuesday, west winds to 30 knots becoming northwest.W2 chance of rain showers in the morning.W2 waves 4 to 6 feet occasionally to 8 feet.W2 tuesday night, northwest winds 15 to 25 knots diminishing to 10 to 20 knots.W2 waves 3 to 5 feet occasionally to 7 feet subsiding to 2 to 4 feet.W2 wednesday, northwest winds 10 to 15 knots backing to southwest.W2 waves 1 to 2 feet.W2 wednesday night, south winds 10 to 15 knots.W2 waves 1 feet or less.W2 thursday, south winds 10 to 15 knots becoming west.W2 waves 1 feet or less.W2 friday, north winds to 30 knots.W2 waves 4 to 6 feet occasionally to 8 feet.W2