NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
8:51 AM Thursday March 5
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 305 INCHES IS CENTERED OVER THE UPPER MIDWEST AND IS EXPECTED TO DRIFT ACROSS THE OHIO VALLEY BY LATE THIS EVENING.W2 THE HIGH WILL REMAIN OVER THE SOUTHEAST STATES THROUGH THE WEEKEND AND WILL SHIFT TO THE MID ATLANTIC COAST EARLY NEXT WEEK.W2 MEANWHILE, A 295 INCH LOW WILL DROP ACROSS LAKE ONTARIO THURSDAY NIGHT INTO FRIDAY AND ANOTHER 300 INCH LOW WILL MOVE ACROSS THE NORTHERN LAKES REGION FRIDAY NIGHT INTO SATURDAY.W2 A 298 INCH LOW WILL THEN MOVE ACROSS ONTARIO ON SUNDAY, FOLLOWED BY ANOTHER 297 INCH LOW ON TUESDAY.W2 LMZ261-362-364-366-563-565-567-868-051645.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 today, west winds 10 to 15 knots becoming southwest to 10 to 20 knots late.W2 chance of snow showers.W2 waves 3 to 5 feet occasionally to 7 feet subsiding to 2 to 4 feet this afternoon.W2 tonight, southwest 15 to 25 knots increasing to 30 knots.W2 waves 3 to 5 feet occasionally to 7 feet building to 4 to 7 feet occasionally to 9 feet overnight.W2 friday, southwest winds to 30 knots with occasional gales to 35 knots.W2 freezing spray.W2 chance of snow showers in the afternoon.W2 waves building to 8 to 12 feet occasionally to 15 feet in the afternoon.W2 friday night, west winds 10 to 20 knots.W2 chance of snow.W2 waves subsiding to 5 to 8 feet occasionally to 10 feet overnight.W2 saturday, west winds 10 to 15 knots.W2 chance of snow showers.W2 waves 3 to 5 feet occasionally to 7 feet.W2 saturday night, west winds 10 to 15 knots.W2 slight chance of snow showers.W2 waves 1 to 3 feet.W2 sunday, southwest winds 10 to 20 knots.W2 chance of snow.W2 waves 2 to 4 feet.W2 monday, west winds 10 to 15 knots becoming southwest 10 to 20 knots in the afternoon.W2 slight chance of snow showers.W2 waves 2 to 4 feet.W2 wave forecast is for ice free areas