Hong Kong paralyzed by flash flooding after heaviest rainfall since 1884

Record-breaking rainfall paralyzed much of Hong Kong on Friday, with flash flooding submerging metro stations and trapping drivers on roads, as authorities suspended schools and urged the public to seek safe shelter.

Photos and videos showed residents wading through murky brown floodwaters as heavy rain continued to fall. In some low-lying areas, streets were transformed into surging torrents, with authorities forced to rescue motorists stuck in their vehicles.

The deluge began late Thursday night, with the Hong Kong Observatory recording more than 158 millimeters (6.2 inches) in rain between 11 p.m. and midnight, the highest hourly rainfall since records began in 1884, the government said in a news release.

Some parts of the densely populated city of 7.5 million saw almost 500 mm (19.7 inches) of rainfall in 24 hours, according to online weather data site OGimet.

Coreidan,

Extreme flooding is our future. Buckle up.

awwwyissss,

Extreme flooding and extreme drought. Climate change also interacts with many other hazards.

Tomboys_are_Cute,

Half of a meter of rain, christ. There are going to be some fucking harrowing rescue efforts and I wish those workers good luck. I am not looking forward to when this happens in my city.

Coolkidbozzy,
@Coolkidbozzy@hexbear.net avatar

1984

tallwookie,

surprised they dont have better stormwater management/drainage systems

Astrealix,
@Astrealix@lemmy.world avatar

I have never seen the city like this; I’m glad I’m not there rn. There are some rumours about how because the government sealed brick paths with glue following the protests the drainage is weaker, but idk how true that is

Arn_Thor,

I’m sure that didn’t help but that’s a drop in the proverbial ocean. There have been many severe rainstorms since that happened and nothing like this occurred

Astrealix,
@Astrealix@lemmy.world avatar

Yeah for sure, this is after all a record storm. That’s the main cause probably.

prenatal_confusion,

It’s all engineers to some limits that are expected. This was not within those limits.

Same thing with Texas and the cold front. Of course Montreal could have dealt with that easily but they expect that sort of thing.

Arn_Thor, (edited )

The water management infrastructure is excellent. But it was designed to cope with century floods, not the kind that happen every other century.

Edit: the drainage systems were in fact designed to cope with a once-in-200-years flood. But this was a 500 year flood. A quarter of Hong Kong’s annual rainfall poured down in a day—and this is a place with notorious rain storms through the summer

burningmatches,

They also just had a typhoon, which means there was probably a lot of debris making things worse.

awwwyissss,

Debris and saturated land so the water had nowhwre to go.

originalucifer,
@originalucifer@moist.catsweat.com avatar

but they will now, right? right?!

Arn_Thor,

There are some events that are costlier to plan for than to clean up after. I’m not sure if this is one of those, but…

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