Lightning and hail possible as new thunderstorm warnings issued

Forecasters warned that heavy showers and thunderstorms may impact driving conditions and cause delays to public transport, with the potential for some flooding to homes and businesses.

One warning, which covers Wales, south-west England, parts of south-east England and stretches up to the Scottish border, is active until the end of Sunday.

Another covers parts of Northern Ireland, north-east England and central Scotland, and is in place until 11pm.

Wind gusts of up to 45mph will also be hazardous in some areas, the Met Office said, as it advised those in the warning zones to prepare for potential short-term power cuts.

In an online forecast on Sunday, Met Office meteorologist Kathryn Chalk said people will “need that umbrella at hand” as showers sweep the country that afternoon.

She said: “Through the rest of the afternoon, there are Met Office yellow thunderstorm warnings in force across much of the UK, so expect some heavy, intense downpours, frequent lightning, rumbles of thunder and also some hail mixed in.

“The showers mostly focus across the west through the afternoon and becoming a bit banded, so some longer spells of rain, especially across southern Scotland and northern parts of England.

“Towards the far south and east, that’s where we largely hold on to drier conditions and some sunny spells, but the odd shower can’t be ruled out.

“Some strong winds as well developing, especially across the south-west, and feeling cool underneath any of these intense downpours.”

Highs of 21C in Cardiff are expected on Sunday, along with 23C in Norwich, 22C in London and Hull, and 18C in Glasgow, according to the Met Office.

Monday – which is a bank holiday in England, Wales and Northern Ireland – will see a “fine and largely dry afternoon” with showers in some areas, Ms Chalk said.

It comes after music fans at Reading Festival donned ponchos and umbrellas, and frolicked in the mud after getting caught in downpours over Friday and Saturday.

While some were seen flinging mud at each other and playing in puddles, others hid beneath their plastic ponchos as they braved the poor weather conditions.

Elsewhere, the cricket at Lord’s in London was halted by the rain on Saturday.

Festivalgoers heading to Reading and Leeds, Creamfields and other live music events had previously been warned of unseasonably strong winds.

As of Sunday afternoon, seven areas are covered by Environment Agency flood alerts, meaning floods are possible.

It comes after continued hot weather across the UK, which coincided with extremely dry conditions.

These included the River Stour in Worcestershire, the Tidal Fal estuary and parts of the south Cornwall coast.

The Met Office has previously said the UK is on course for its hottest summer on record after five heatwaves, with temperatures of up to 38.1C recorded in London.