High surf and dangerous rip currents are likely. People are advised to stay out of the water this week, even when a lifeguard is on duty.

STATEN ISLAND, N.Y. -- New York City is closing all its public beaches to swimmers in the coming days as Hurricane Erin is expected to bring massive waves and life-threatening rip currents to the five boroughs.

The NWS also expects an increase in rip current activity along the New York City and Long Island beaches, along with minor coastal flooding during high tide across the south shores of Queens, Brooklyn and Long Island starting Wednesday and peaking Thursday. The NWS Monday rated the risk of rip current occurring “moderate,” the middle tier level.

NEW YORK CITY (WABC) -- Go to the beach and get a shot. That is not the tagline for one of the bar's here on the boardwalk, that's from Mayor Bill de Blasio.

NYC anticipates showers, thunderstorms, high rip currents, surf advisories, and potential coastal flooding, with advisories for beach-goers and mariners issued.