Rainfall warning across UK as ‘flash flooding’ may occur in parts of the country --[Reported by Umva mag]

Once these thunderstorms ease, we'll be seeing a drop off in temperatures.

Sep 21, 2024 - 14:08
Rainfall warning across UK as ‘flash flooding’ may occur in parts of the country --[Reported by Umva mag]
kilnmead rd crawley flooding
Heavy rain could lead to flooded roads (Picture: Dan Jessup/Eddie Mitchell)

Be prepared for the upcoming wet and stormy weather to be replaced by cooler autumnal temperatures next week.

The UK has a weekend of thunderstorms to look forward to, with yellow weather warnings in place on both Saturday and Sunday.

Areas of heavy rain bring the ‘potential for disruption’, the Met Office says, with spray and flooding which could lead to difficult driving conditions.

The forecasters also warn there’s a small chance that some rural communities could be cut off by flooded roads – and some homes and businesses could flood, damaging buildings.

There’s a small chance of power cuts and loss of services.

A Met Office spokesperson explained: ‘Whilst the strongest signal for impactful rainfall totals appears to be centred across east Wales and west-central England, there is potential right across this highlighted region for some areas to see 30-50mm in less than 6 hours, with a few places receiving 60-80mm over the course of 12-24 hours.’

UK weather map for Saturday, September 21 2024, showing a yellow patch over Wales and southern England where thunderstorms are expected
It’ll be wet and windy for Wales this weekend (Picture: Metro Graphics)
UK weather map for Sunday, September 22 2024, showing a yellow patch over Wales and southern England where heavy rain is expected
The warning covers a slightly smaller area on Sunday (Picture: Metro Graphics)

But don’t expect the situation to return to the warmth and sunshine we’ve been seeing this week, as the unsettled conditions are set to turn into a September chill.

The Met Office warns that the high pressure which brought us our recent spell of warm and calm weather will be moving northward this weekend, bringing heavy showers and thunderstorms across more southern areas of the UK.

The yellow weather warnings for thunderstorms and rain cover most of Wales and parts of southern and western England throughout Saturday and Sunday.

But once those thunderstorms ease, we’ll be seeing a drop off in temperatures.

Discussing the upcoming wet weekend, chief meteorologist Jason Kelly said: ‘Thundery downpours have developed across parts of southern England, and will last into Friday evening, bringing frequent lightning, gusty winds, hail, and spells of heavy rain.

‘The risk of thunderstorms persists into the weekend with potentially longer spells of heavy rain for some along with a continued risk of hail and lightning accompanying the most intense storms.

‘Parts of the midlands, southern England and east Wales appear at greatest risk of seeing these conditions. 

‘The warnings cover the areas of the country most at risk of seeing thunderstorms but not everyone within a warning area will experience a thunderstorm. For many, much of the time it will remain dry.’

The yellow weather warnings in place this weekend

Saturday, September 21

Thunderstorm warning in place from 1am until midnight, covering:

  • South west of England
  • Central and western England
  • All of Wales

Sunday, September 22

Rain warning in place from midnight to midnight, covering:

  • South west of England
  • Central and western England
  • Most of Wales, excluding its northern coast

Early next week, especially in northern areas of the UK, we’ll see a downturn in temperatures.

The Met Office says it expects ‘a window of quieter conditions’ for much of the UK – but only until wet and windy ‘autumnal’ weather moves across from the North Atlantic.

Deputy chief meteorologist Dan Harris added: ‘The area of persistent and at times heavy rain that we are expecting to have developed by the end of Sunday will most likely continue for some parts of southern UK through at least the first part of Monday, before starting to clear eastwards.

‘By this time however, confidence falls sharply in terms of both its exact location, and rainfall amounts.

‘We are keeping a further warning for Monday under review, so please keep up to date with the latest forecast for your area.’

Get in touch with our news team by emailing us at webnews@metro.co.uk.

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