Flash floods around the world in the past week, after a season of record heatwaves, have been exacerbated by the high temperatures baking the ground and making it less able to absorb water, scientists say.
Following extreme rainfall in Europe and the US last week, on Friday Hong Kong was paralysed as rain associated with Typhoon Saola submerged metro stations and trapped cars, halting schools and the stock exchange.
The HK Observatory recorded more than 158mm between 11pm and midnight local time, the highest hourly rainfall since records began in 1884, the government said.
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