It is raining real heavily. Hong Kong Observatory issued a red alert, thunderstorm, and landslip warning at 10.02 am. The Obs suggests cancelling 'non-essential appointments, stay at home or remain in a safe shelter.' Plus, a special announcement about flooding in the New Territories.
Update at 12.30pm. Many parts of Hong Kong island, Kowloon and the whole of a little island in the South China Sea had had by midday today: up to 300mm of rain during the past 24 hours.
Update at 1.15pm. Between 11.45am and 12.45pm, lightning was detected over all regions of the territory -- usually, it is localized. Speaking on the one o'clock news on RTHK, a man from the Obs said that in some areas rainfall this morning had been 100mm in an hour! Heavy rains coupled with a very high tide have also produced serious flooding in Tai Po, and other low-lying coastal areas of the New Territories.
Update. 1.30pm. Stopped raining. Bright and light. Time to go for a gentle ride on my bike.