Additionally , waves reached 13 ft ( 4 m ) , resulting in some beach erosion and damage to dunes and coral reefs .
Along the mainland , surge heights were generally less than 4 ft ( 1 m ) .
Waves reached 13 ft ( 4 m ) , resulting in some beach erosion and damage to dunes and coral reefs .
Along the mainland , surge heights were generally less than 4 ft ( 1 m ) .