NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
8:42 PM Tuesday July 29
W2 WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS, WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES, ALONG WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES WHICH WILL OCCASIONALLY BE ENCOUNTERED.W2 SYNOPSIS, HIGH PRESSURE OF 302 INCHES ACROSS THE NORTHERN AND CENTRAL PLAINS WILL GRADUALLY WEAKEN TO 300 INCHES BY WEDNESDAY AFTERNOON.W2 MEANWHILE, LOW PRESSURE OF 299 INCHES OVER FAR EASTERN ONTARIO WILL MOVE TO NEAR LAKE HURON BY LATE TONIGHT.W2 THIS LOW WILL STEER A WEAK COOL FRONT SOUTHWARD DOWN THE LAKE TONIGHT INTO EARLY WEDNESDAY MORNING.W2 ANOTHER LOW OF SIMILAR MAGNITUDE WILL MOVE SOUTHWARD AND MERGE WITH THIS LOW ON WEDNESDAY.W2 THESE LOWS WILL EVENTUALLY BECOME A COMBINED LOW NEAR 298 INCHES THAT WILL MOVE SLOWLY NORTH THROUGH QUEBEC ON THURSDAY AND INTO FRIDAY.W2 A WEAK COOL FRONT EXTENDING FROM THIS LOW WILL MOVE SOUTHWARD ACROSS THE LAKES REGION DURING OR NEAR FRIDAY NIGHT.W2 HIGH PRESSURE OF 302 INCHES WILL THEN BUILD OVER THE GREAT LAKES REGION DURING SATURDAY NIGHT INTO SUNDAY AND LINGER THROUGH MONDAY.W2 LMZ261-362-364-366-563-565-567-868-300915.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 LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NAUTICAL MILES OFFSHORE TO MID LAKE.W2 LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NAUTICAL MILES OFFSHORE TO MID LAKE.W2 sheboygan wi to pentwater mi north rest of tonight, northwest winds 5 to 10 knots becoming north.W2 scattered showers with isolated thunderstorms through early evening, then isolated showers late this evening.W2 waves 2 feet or less.W2 wednesday, northwest winds 5 to 10 knots backing to south in the early afternoon, then increasing 10 to 15 knots late afternoon.W2 waves 1 feet or less building to 1 to 2 feet.W2 wednesday night, southwest winds 10 to 15 knots.W2 slight chance of showers in the evening.W2 waves 1 to 2 feet.W2 thursday, west winds 10 to 15 knots becoming southwest.W2 slight chance of showers and thunderstorms in the afternoon.W2 waves 1 to 2 feet.W2 thursday night, south winds 10 to 15 knots.W2 waves 1 to 2 feet.W2 friday, south winds 5 to 10 knots.W2 slight chance of showers and thunderstorms.W2 waves 1 feet or less.W2 friday night, southeast winds 5 to 10 knots becoming east.W2 slight chance of showers.W2 waves 1 feet or less.W2 saturday, north winds 5 to 10 knots.W2 waves 1 feet or less.W2 sunday, southwest winds 10 to 15 knots.W2 waves 1 to 2 feet.W2