FZUS63 KLOT 091945 GLFLM OPEN LAKE FORECAST FOR LAKE MICHIGAN NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 245 PM CDT THU MAY 9 2013 FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN .SYNOPSIS...A FRONTAL BOUNDARY OVER SOUTHEAST IOWA STRETCHED NORTHEAST THROUGH NORTHERN ILLINOIS INTO SOUTHERN LOWER MICHIGAN THIS AFTERNOON. AN AREA OF LOW PRESSURE AVERAGING 29.8 INCHES OVER SOUTHEAST IOWA THIS AFTERNOON...WILL SLIDE EAST ALONG THIS FRONTAL BOUNDARY AND BE JUST SOUTH OF LAKE MICHIGAN TONIGHT. THIS LOW WILL THEN CONTINUE TO SLIDE EAST...REACHING NORTHERN INDIANA EARLY FRIDAY MORNING. ANOTHER COLD FRONT WILL MOVE DOWN THE LAKE ON SATURDAY...WITH HIGH PRESSURE AVERAGING 30.3 INCHES BUILDING OVER THE LAKE FOR THE END OF THE WEEKEND INTO MONDAY. THEN HIGH PRESSURE DRIFTS EAST OF THE AREA TUESDAY AS A TROUGH OF LOW PRESSURE DEVELOPS ACROSS THE CENTRAL PLAINS EARLY NEXT WEEK. // 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. LMZ261-362-364-366-563-565-567-868-100400- LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM OFFSHORE TO MID LAKE- 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 NM OFFSHORE- LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI- LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID LAKE- 245 PM CDT THU MAY 9 2013 SHEBOYGAN WI TO PENTWATER MI NORTH .TONIGHT...NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST WINDS TO 30 KT. CHANCE OF SHOWERS THIS EVENING...THEN SHOWERS LIKELY OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 9 FT BUILDING TO 8 TO 11 FT OCCASIONALLY TO 15 FT FROM LATE EVENING ON. .FRIDAY...NORTHEAST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT LATE IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS IN THE MORNING. WAVES 8 TO 11 FT OCCASIONALLY TO 15 FT. .FRIDAY NIGHT...NORTH WINDS 10 TO 15 KT BACKING TO WEST 5 TO 10 KT OVERNIGHT. SLIGHT CHANCE OF SHOWERS OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO 12 FT SUBSIDING TO 2 TO 4 FT OCCASIONALLY TO 6 FT OVERNIGHT. .SATURDAY...WEST WINDS 15 TO 25 KT BECOMING NORTHWEST TO 30 KT. CHANCE OF SHOWERS. WAVES 2 TO 4 FT OCCASIONALLY TO 6 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 9 FT. .SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 9 FT. .SUNDAY...NORTHWEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 9 FT. .SUNDAY NIGHT...WEST WINDS 10 TO 15 KT. WAVES 2 TO 4 FT OCCASIONALLY TO 6 FT. .MONDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 15 TO 25 KT. WAVES 2 TO 4 FT OCCASIONALLY TO 6 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 8 FT. .TUESDAY...SOUTH WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES BUILDING TO 4 TO 7 FT OCCASIONALLY TO 10 FT. $$ LMZ080-669-671-673-675-777-779-870-872-874-876-878-100400- LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO MID LAKE- 245 PM CDT THU MAY 9 2013 SHEBOYGAN WI TO PENTWATER MI SOUTH .TONIGHT...EAST WINDS 10 TO 20 KT BACKING TO NORTH WINDS 15 TO 25 KT OVERNIGHT. SHOWERS WITH A CHANCE OF THUNDERSTORMS THROUGH EARLY EVENING...THEN SHOWERS FROM LATE EVENING ON. WAVES 1 TO 3 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 9 FT OVERNIGHT. .FRIDAY...NORTH WINDS TO 30 KT. CHANCE OF SHOWERS IN THE MORNING...THEN SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON. WAVES BUILDING TO 8 TO 11 FT OCCASIONALLY TO 15 FT. .FRIDAY NIGHT...NORTH WINDS 15 TO 25 KT BECOMING NORTHWEST 5 TO 10 KT AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 9 FT OVERNIGHT. .SATURDAY...WEST WINDS TO 30 KT BECOMING NORTHWEST. CHANCE OF SHOWERS IN THE MORNING. WAVES 4 TO 6 FT OCCASIONALLY TO 9 FT. .SATURDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. WAVES SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 8 FT. .SUNDAY...NORTHWEST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 8 FT. .SUNDAY NIGHT...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 2 TO 4 FT OCCASIONALLY TO 6 FT. .MONDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH. WAVES 1 TO 3 FT. .TUESDAY...SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT. SLIGHT CHANCE OF SHOWERS. WAVES BUILDING TO 4 TO 6 FT OCCASIONALLY TO 9 FT. $$ LMZ761-100400- MAFOR 0921/ MICHIGAN NORTH 12830 13146 13140. WAVES 4 TO 6 FT OCCASIONALLY TO 9 FT BUILDING TO 8 TO 11 FT OCCASIONALLY TO 15 FT TONIGHT. WAVES 8 TO 11 FT OCCASIONALLY TO 15 FT FRIDAY. MICHIGAN SOUTH 11226 12136 11836 14840. CHANCE OF THUNDERSTORMS THROUGH EARLY THIS EVENING. WAVES 1 TO 3 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 9 FT TONIGHT. WAVES BUILDING TO 8 TO 11 FT OCCASIONALLY TO 15 FT FRIDAY. $$ BEACHLER