Hong Kong's Leisure and Cultural Services Department reported on November 7 that red flags were raised at four beaches because of big waves, advising beachgoers not to swim there.

The affected beaches were Stanley Main Beach and Big Wave Bay Beach in Southern District on Hong Kong Island, and Silverstrand Beach and Clear Water Bay Second Beach in Sai Kung District.

The department's notice, issued that day, described the red flags as a response to the wave conditions and did not say when they might be lowered.