This is the second time the highest rainstorm signal was raised in a week

Hong Kong Observatory has issued a black rainstorm warning on Saturday morning, the second time in the week, warning of the risk of flash floods.

The highest-level black signal was issued at 9.45am, escalating from the red rainstorm warning sent less than an hour. It means that heavy rain has fallen or is expected to fall generally over Hong Kong, exceeding 70mm in an hour, and is likely to continue.

“A band of intense thundery showers associated with an active southwest monsoon is affecting the vicinity of Pearl River Estuary,” the weather forecaster said.

“Rain is particularly heavy in Hong Kong Island’s Eastern district, with heavy rain of more than 70mm an hour falling, which may cause serious flooding.”