The system is used to help inform the public about rip currents, using different flag colors to help warn beachgoers about the dangers beneath the water.

Beachgoers at Emerald Isle are being cautioned as purple flags will be flying to signal the presence of Portuguese Man O War ...

EMERALD ISLE, N.C. (WITN) - Beach goers at Emerald Isle are being warned to watch out for Portuguese Man O War along the beach strand. Purple flags are now flying to alert visitors of the potential ...