NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
8:32 PM Wednesday August 31
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 303 INCHES OVER MANITOBA EXTENDS SOUTH INTO THE UPPER MISSISSIPPI VALLEY.W2 THE HIGH WILL BUILD ACROSS THE CENTRAL GREAT LAKES BY FRIDAY, THEN CONTINUE EAST TO NEW ENGLAND OVER THE WEEKEND.W2 LOW PRESSURE OF 295 INCHES WILL MOVE OUT OF THE NORTHERN ROCKIES AND INTO THE NORTHERN PLAINS BY SATURDAY MORNING.W2 LMZ261-362-364-366-563-565-567-868-010930.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, north winds 15 to 25 knots.W2 waves 3 to 6 feet occasionally to 8 feet.W2 thursday, north winds 15 to 25 knots.W2 chance of sprinkles in the morning.W2 waves 3 to 6 feet occasionally to 8 feet.W2 thursday night, northeast winds 15 to 25 knots becoming east 10 to 20 knots.W2 waves 4 to 6 feet occasionally to 8 feet subsiding to 3 to 5 feet occasionally to 7 feet.W2 friday, east winds 10 to 20 knots becoming northeast.W2 waves 2 to 4 feet.W2 friday night, east winds 10 to 20 knots veering to south.W2 waves 2 to 4 feet.W2 saturday, south winds 10 to 20 knots becoming southwest 10 to 15 knots.W2 waves 1 to 3 feet.W2 saturday night, south winds 10 to 15 knots.W2 waves 1 to 2 feet.W2 sunday, south winds 10 to 15 knots increasing to 10 to 20 knots.W2 waves 1 to 3 feet.W2 monday, south winds 10 to 20 knots increasing to 15 to 25 knots.W2 chance of showers and thunderstorms.W2 waves 2 to 4 feet.W2