Black Rainstorm in 6 June 2020

Black Rainstorm Returned after Three Years

Yeung Hon-yin

On 6 June. a trough of low pressure brought heavy rain to Hong Kong that lasted for about seven hours. The rainfall in many areas exceeded 200 mm, resulting in severe flooding. The Observatory issued a "Black" Rainstorm Signal for the first time since 2017. Thunderstorms were also unusually active on that day. Over 14,000 lightning flashes were recorded in Hong Kong throughout the day, setting a new record for June.

Rainfall distribution map on 6 June 2020

Severe flooding occurred at Kwun Tong Road in the morning of 6 June 2020 (photo credit: Dimsum Daily)

Severe flooding occurred at Sai Kung in the morning of 6 June 2020 (photo credit: RTHK)