Simplify the following text for a Grade 13 native English-speaking person.
Original: While Javier peaked at Category 4 , with windspeeds of 150 mph ( 240 km\/h ) , it weakened dramatically before striking land south of San Ignacio , Baja California Sur , as only a tropical depression .
Simplified: While Javier peaked at Category 4 , with windspeeds of 150 mph ( 240 km\/h ) , it weakened dramatically before striking land south of San Ignacio in Baja Sur as only a tropical depression .