Hurricane Bill is projected to stay out at sea over the weekend, but that doesn't mean Long Island won't see some of its effects.

Forecasters say the storm will churn up rough surf and create strong rip currents along East End and South Shore beaches. Experts say waves 8-15 feet high will slam into Long Island's beaches over the weekend.

Swimming was temporarily banned at Robert Moses State Park Friday afternoon due to rough surf conditions.

Fire and parks officials urge those who aren't strong swimmers to stay out of the water where swimming is still allowed this weekend. For those venturing into the surf, officials say they must stay alert and quickly respond to warnings from lifeguards.