FZUS63 KLOT 101947 GLFLM OPEN LAKE FORECAST FOR LAKE MICHIGAN NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 247 PM CDT FRI MAY 10 2013 FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN .SYNOPSIS...LOW PRESSURE OF 29.8 INCHES NEAR LAKE ERIE WILL MOVE NORTHEAST INTO SOUTHERN QUEBEC SATURDAY MORNING AS IT DEEPENS TO 29.5 INCHES. A WEAK RIDGE OF HIGH PRESSURE OF 30.0 INCHES OVER THE UPPER MIDWEST WILL MOVE ACROSS THE WESTERN LAKES TONIGHT...AS IT DISSIPATES. ANOTHER LOW PRESSURE OF 29.8 INCHES OVER WESTERN ONTARIO WILL MOVE EAST TONIGHT AND SATURDAY AND MERGE WITH THE LOW OVER SOUTHERN QUEBEC. A TRAILING COLD FRONT FROM THIS SECOND LOW WILL MOVE ACROSS THE LAKE SATURDAY. AS A LARGE RIDGE OF HIGH PRESSURE OF 30.3 INCHES BUILDS ACROSS THE PLAINS SATURDAY NIGHT INTO SUNDAY...THE GRADIENT WILL TIGHTEN ACROSS THE UPPER LAKES REGION. THIS HIGH WILL SLOWLY WEAKEN AS IT MOVES SOUTHEAST ACROSS THE SOUTHERN LAKES AND OHIO VALLEY SUNDAY NIGHT INTO MONDAY. // 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. LMZ261-362-364-366-563-565-110200- 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- 247 PM CDT FRI MAY 10 2013 TWO RIVERS WI TO MANISTEE MI NORTH .TONIGHT...NORTHEAST WINDS 15 TO 25 KT EARLY DIMINISHING TO 5 TO 10 KT AND BECOMING VARIABLE BY MIDNIGHT...THEN BECOMING SOUTHWEST 10 TO 15 KT BY MORNING. WAVES 5 TO 8 FT OCCASIONALLY TO 12 FT SUBSIDING TO 2 TO 4 FT OCCASIONALLY TO 6 FT OVERNIGHT. .SATURDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING NORTHWEST 15 TO 25 KT BY LATE MORNING. SCATTERED SHOWERS. WAVES 2 TO 4 FT OCCASIONALLY TO 6 FT. .SATURDAY NIGHT...NORTHWEST WINDS TO 30 KT. SLIGHT CHANCE OF RAIN IN THE EVENING...THEN CHANCE OF RAIN AND SNOW SHOWERS OVERNIGHT. WAVES BUILDING TO 7 TO 10 FT OCCASIONALLY TO 14 FT. .SUNDAY...NORTHWEST WINDS TO 30 KT. CHANCE OF RAIN AND SNOW SHOWERS IN THE MORNING...THEN SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO 14 FT. .SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 15 KT. WAVES SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 8 FT. .MONDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTH. WAVES 1 TO 3 FT. .MONDAY NIGHT...SOUTH WINDS 10 TO 20 KT. CHANCE OF SHOWERS. WAVES 2 TO 4 FT OCCASIONALLY TO 6 FT. .TUESDAY...SOUTH WINDS 10 TO 20 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT OCCASIONALLY TO 6 FT. .WEDNESDAY...SOUTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT. $$ LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-110200- LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 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 PENTWATER TO MANISTEE MI 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- 247 PM CDT FRI MAY 10 2013 TWO RIVERS WI TO MANISTEE MI SOUTH .TONIGHT...NORTH WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT THIS EVENING...THEN BECOMING WEST AROUND 10 KT OVERNIGHT. WAVES 7 TO 10 FT OCCASIONALLY TO 14 FT SUBSIDING TO 3 TO 6 FT OCCASIONALLY TO 9 FT OVERNIGHT. .SATURDAY...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST 15 TO 25 KT BY EARLY AFTERNOON. SHOWERS LIKELY IN THE LATE MORNING AND EARLY AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 8 FT. .SATURDAY NIGHT...NORTHWEST WINDS TO 30 KT. WAVES BUILDING TO 6 TO 9 FT OCCASIONALLY TO 13 FT. .SUNDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH AROUND 10 KT IN THE AFTERNOON...THEN BECOMING VARIABLE BY EVENING. WAVES 6 TO 9 FT OCCASIONALLY TO 13 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 8 FT. .SUNDAY NIGHT...VARIABLE WINDS 5 TO 10 KT BECOMING WEST. WAVES SUBSIDING TO 1 TO 2 FT. .MONDAY...SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO 15 KT. WAVES 1 TO 2 FT. .MONDAY NIGHT...SOUTH WINDS 10 TO 20 KT. SLIGHT CHANCE OF SHOWERS. WAVES 2 TO 4 FT OCCASIONALLY TO 6 FT. .TUESDAY...SOUTH WINDS 15 TO 25 KT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO 5 FT OCCASIONALLY TO 8 FT. .WEDNESDAY...SOUTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT. $$ LMZ761-110200- MAFOR 1021/ MICHIGAN NORTH 11130 19120 11110 11900 11500 11510 11610 12730. WAVES 5 TO 8 FT OCCASIONALLY TO 12 FT SUBSIDING TO 2 TO 4 FT OCCASIONALLY TO 6 FT OVERNIGHT. WAVES 2 TO 4 FT OCCASIONALLY TO 6 FT. MICHIGAN SOUTH 11840 11830 11820 11710 12610 12730. SHOWERS LIKELY LATE SATURDAY MORNING AND EARLY SATURDAY AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO 14 FT SUBSIDING TO 3 TO 6 FT OCCASIONALLY TO 9 FT OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 8 FT. $$