Answer
Beach Patrol flag colors communicate surf hazard levels when stands are staffed. Green is generally lower hazard; yellow means caution; red signals high hazard or swimming restrictions; double red means the ocean is closed to swimming.
Purple often flags marine pests (jellyfish or similar)—not a rip cancel. Flags can differ by street as conditions change.
Deep dive: rip currents & flags FAQ. Same-day check: Beach Weather, tower instructions on the sand, and the Town Beach Patrol page.
Sources: Ocean City Beach Patrol · Town of Ocean City · Visit Ocean City
Editorial visitor guidance for Ocean City, Maryland. Confirm current Town of Ocean City, Maryland DNR, NPS Assateague, and NWS rules when regulations or safety apply.











