WANTAGH - Lifeguards warn residents hitting the beach this holiday weekend to be aware of dangerous waters due to Hurricane Arthur.

Arthur, which has now been downgraded to a tropical storm as it heads to Canada, has left behind dangerous rip currents and high surf advisories. Lifeguard Cary Epstein says rip currents will be present along South Shore beaches over the next few days.

He says they vary in size and strength, and can even present an issue for experienced swimmers.

Epstein says anyone caught in a rip current should remain calm and swim parallel to the shoreline. He says swimmers should always make sure they are swimming where a lifeguard can see them.

Epstein says they made 20 rescues on Wednesday at the Central Mall at Jones Beach.