Heavy rain in Hong Kong on Thursday has raised alarms as the remnants of Typhoon Danas swept across the area, prompting authorities to issue warnings about potential flash flooding and other disasters. The typhoon, which previously wreaked havoc in Taiwan—resulting in two fatalities and leaving around 600,000 households without power—made a second landfall in China after cruising across the Taiwan Strait.

As the storm weakened into a tropical depression by Wednesday morning, it continued to deliver heavy rainfall across China's southeast, dumping as much as 17.2 inches of rain in some areas by early Thursday. The meteorological agency forecasts that up to three inches of rain may fall per hour until Friday, especially affecting the populous Guangdong province, home to about 127 million residents.

Warnings have been issued for flash floods, landslides, and severe thunderstorms, with wind gusts potentially reaching 73 miles per hour—almost akin to that of a weak Category 1 hurricane. In Hong Kong, the residual effects of the storm combined with monsoon rainfall pose significant risks, leading the local weather agency to suspend schools for Friday and issue a red rain warning, which alerts citizens to rainfall exceeding 1.9 inches per hour.

As of Tuesday afternoon, gusts measuring 43 miles per hour were recorded on Sha Chau Island, near the city's airport. Officials urged residents to stay indoors, advising caution in the face of expected torrential rains and thunderstorms expected to persist through Friday.