No. Topographic features such as coastal plains generally take millions of years to form; a single storm cannot cause such major changes.
What are the three features of the Pacific coastal plains
Lakes and rivers.
dalta
water
what
estuary
Lakes and rivers.
Angel falls The coastal region
the volcano Duncan.
atlantic ocean
Australia is a continent with a great length of coast. In order for us to answer you we would need you to be more specific about which bit of coast you are asking about.