At 1415 UTC on September 12 Ivan passed 25 miles ( 40 km ) south-southwest of George Town , Cayman Islands , with sustained winds of 150 mph ( 240 km\/h ) were reported .
At 1415 UTC on September 12 Ivan passed 25 miles ( 40 km ) south-southwest of George Town , Cayman Islands , with winds of 150 mph ( 240 km\/h ) .