VIRGINIA BEACH, Va (WVEC) – Lifeguards say red flag warnings could last throughout the weekend at the Oceanfront.

The warnings mean the water is dangerous and swimmers should use caution.

“I don’t know what’s gotten into it, but the waves have really picked up,” said swimmer Sam Ray. “There was two ten year old girls. They were boogie boarding and got out a little bit too far, and a couple of lifeguards went out and got them.”

Lifeguards had to rescue about a dozen swimmers on Friday, mostly children.

“We keep everybody knee to waist deep. We don’t want anyone going out any further than that. The currents get worse the further out you go,” said Lifeguard Supervisor, Marc Levine.

Levine also suggest always keeping tabs of what street you swim near.

“If they get pushed down a little bit with the currents that they can walk back to the right stand,” said Levine.