Torrential rain warning for today with up to 90mm forecast in two hours

The Met Office has warned that up to 90mm of rain could fall in some places today – with heavy showers bringing torrential rain.

A yellow level rain warning will come into force at 12pm and last until midnight on Monday.

The warning covers the whole south, coast and most of London – from Dorset, Somerset and Wiltshire through Hampshire, Surrey and Sussex to Essex and Herts as well as Berkshire and Kent.

It reads: “Slow-moving, heavy showers, with some thunderstorms, are likely to break out during Monday afternoon.

“This may lead to torrential downpours in some places with 20 to 30 mm of rain in an hour and perhaps in excess of 60 mm in some spots in two or three hours.

“There is also a chance of more persistent heavy rain developing over parts of southeast England during the afternoon or evening and persisting into early Tuesday.

“Were this to occur there is a chance of 60 to 90 mm rain falling in a few spots.”

The Met Office says:

  • There is a small chance that homes and businesses could be flooded, causing damage to some buildings
  • There is a small chance of fast flowing or deep floodwater causing danger to life
  • Where flooding occurs, there is a slight chance of delays or cancellations to train and bus services
  • Spray and flooding could lead to difficult driving conditions and some road closures
  • There is a small chance that some communities will become cut off by flooded roads
  • There is a slight chance of power cuts and loss of other services to some homes and businesses

The Environment Agency has one flood alert in place for between Reading and Basingstoke.

The warning for the Upper River Loddon reads: “Property flooding is not currently expected.

“River levels have risen on the River Loddon as a result of persistent rainfall. Further rainfall is expected overnight, therefore flooding of low lying roads and farmland is possible this evening 11/07/21, especially in the Longbridge Mill area.

“Localised heavy thunderstorms are forecast for tomorrow, 12/07/21 although timings and locations are uncertain.

“It is therefore possible that river levels will continue to rise tomorrow, and that levels will rise quickly in response to the rainfall.

“We are closely monitoring the situation. Please remain safe and aware of your local surroundings and refer to the ‘River and Sea levels in England’ webpage for current river levels.”

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My London – Local News