The amber rainstorm warning was hoisted late this afternoon for the second time today as heavy rains continued to lash Hong Kong.

A southerly airstream brought more than 40 millimetres of rain across the territory this afternoon, with more than 100mm falling on Kwai Tsing District, the Hong Kong Observatory reported this evening.

Areas of central and northeastern parts of the New Territories reported widespread incidents of flooding.

The Observatory says over the past 24 hours parts of Lantau received as much as 200 millimetres of rain, with Tai O in the west and Disneyland in the northeast both receiving between 150-200 mm.  Much of southwest Lantau and Tung Chung received slightly less rain – between 100-150mm, the Observatory data shows, with the heaviest falls between 2-5pm.

Chart: HK Observatory

The amber rainstorm warning, issued at 4:20pm, remained in force at 8pm. It indicates a likely fall of 30mm or more in an hour.

The earlier amber signal was raised at 8:20 am and cancelled at 11am.

The Observatory predicts further “heavy showers and a few squally thunderstorms” tomorrow morning, with some sunny periods in the afternoon.