Sadiq Khan tells Londoners to organize for danger of flash flooding from heavy rain

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adiq Khan has advised Londoners to organize for flash flooding within the occasion that heavy rain and thunderstorms hit the capital this week.

The Met Workplace has issued a yellow thunderstorm warning for a lot of the UK on Monday and Tuesday as circumstances might trigger flash flooding, transport disruption and energy cuts in areas hit by heavy rain.

The climate warning will keep in place for southern England on Wednesday, the place communities might be reduce off by flooded roads, and the possibility of fast-flowing or deep flood water might trigger hazard to life.

We discovered quite a bit from final yr in July when there was flash flooding brought on by an enormous quantity of rain

Consultants warned that metropolis drainage programs might not be capable of cope if a sudden downpour hits as water would seemingly run off land that has dried up over weeks of little rain and scorching climate.

The Nationwide Drought Group on Friday moved elements of the South West, elements of southern and central England, and the East of England into official drought standing, whereas six water corporations have imposed or introduced plans to impose hosepipe restrictions.

Chatting with PA on Monday, the Mayor of London mentioned: “We discovered quite a bit from final yr in July when there was flash flooding brought on by an enormous quantity of rain – two months’ price of rain – in simply a few hours and other people’s properties companies and public transport was flooded.

Grass fires will stay a danger, the Mayor mentioned, warning Londoners to not be lulled right into a false sense of safety by the rain (Dominic Lipinski/PA) / PA Wire

“Chatting with the Met Workplace, the Setting Company and plenty of others, we’re involved that over the following few days we might see an enormous quantity of rain in a brief time frame which might result in flash flooding.

“I’ve written to tens of 1000’s of Londoners who dwell in properties that might be affected by flash flooding.

“My message to Londoners is to please contact Floodline, go to your native authority’s web site to see what you are able to do to cut back the possibilities of you being flooded but in addition to minimise the implications on you,” he mentioned, recommending individuals additionally examine they’re insured and what these particulars are in addition to making ready a seize bag.

Mr Khan mentioned: “[We are] working intently with the water corporations, the hearth brigade, Transport for London, native councils and different companions ensuring we’re as prepared as we will be, however the dangerous information is there might effectively be flash floods if there’s heavy rain throughout a brief time frame.”

Six water corporations have imposed or introduced plans to impose hosepipe restrictions (Gareth Fuller/PA) / PA Archive

The mayor additionally referred to as on the Authorities to do extra to sort out local weather change in addition to adapt the capital to take care of its penalties in mild of the latest surge in fires and now the potential for flash floods.

“I’m actually involved concerning the capability not simply of the hearth brigade however our metropolis to take care of what’s now turning into an everyday occasion of heatwaves, droughts and flash flooding,” Mr Khan mentioned.

He additionally mentioned he’s “actually nervous about all types of life in London,” together with public transport programs not being as efficient when temperatures exceed 35-40C and that properties and workplaces have to be tailored as effectively.

“I don’t need Londoners to be lulled right into a false sense of safety as a result of we’ll nonetheless be dwelling in a state of affairs the place the grass isn’t inexperienced so there’s nonetheless the chance, though there could also be heavy rainfall, of grass fires, of open fires, of the drought carrying on within the foreseeable future with the hosepipe ban – though it might rain later this week,” he added.

Water tends to search out the bottom pathway… that’s the reason it’s of concern to the Tube and underground automotive parks

Prof Hannah Cloke, an knowledgeable in hydrology on the College of Studying, earlier defined why floor space floods are harmful in cities.

“If you happen to get a heavy rain in a metropolis, the drainage system can cope up to some extent, but when there’s actually heavy rain it may overwhelm the system – the rain can not run away fast sufficient,” Prof Cloke mentioned.

She additionally defined that if parks are “actually actually dry” there is no such thing as a the place for the water to run.

“Water tends to search out the bottom pathway – that’s the reason it’s so harmful for cities with these floor space floods. That’s the reason it’s of concern to the Tube and underground automotive parks and issues like that.”

On why heavy rain wouldn’t alleviate these drought-hit areas, she mentioned: “It’s a drop within the ocean actually. It isn’t soaking into the soil which is how we actually want it. We want it again into the system the place it may be saved.

“We actually want a protracted winter of rain to replenish this.”


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