The first signs of Hurricane Irene's approach have begun at the Jersey Shore, as wind speed and surf height have begun a steady increase that is expected to top out late Sunday. Across the Jersey Shore, residents and local officials alike have begun preparing for the severe weather and rough surf that are expected to accompany the storm's arrival. In Bradley Beach, yellow warning flags flew on Thursday as Department of Public Works employees and lifeguards began preparations for the impending storm. Beach Supervisor Dick Johnson oversaw backhoes as they removed storage boxes from along the …