Thunderstorms are continuing to affect parts of Britain, with lightning and heavy downpours expected to hit both the morning and evening rush hours.

Torrential rain could cause some localised flooding, and people are being warned of the risk of disruption to power networks from lightning strikes.

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A yellow weather warning is in place right through the day for large swathes of England and Wales, with the Met Office predicting a month's worth of rain could fall in some places in a matter of hours.

The intense conditions caused flash flooding in a coastal village in Cornwall on Tuesday, with some 50 properties affected and several people having to be rescued from their homes.

Emergency services work on the scene of flash flooding in Coverack, Cornwall credit: LEAHLILY11/Twitter

A council spokesman confirmed some properties in Coverack and one of the roads suffered structural damage and are due to be inspected by structural engineers.

Two people were rescued by a coastguard helicopter, and one witness described the flooding as "quite horrendous".

A meeting for residents, attended by council officers, will be held at a local hotel on Wednesday.

Commuters in the Midlands and east of England could be caught up in downpours on Wednesday, while those in north-east Wales and the North West will bear the brunt in the afternoon, Steven Keates from the Met Office said.

"This morning it's probably going to be parts of the Midlands and eastern England that see potential for some heavy rain, some thunderstorms, and then a bit of a lull," he said.

"Then just in time for the evening rush hour, a different location, this time across parts of northern England, north-west England in particular by the looks of it, will see the worst of the weather in places."

Lightning flashes near the Spinnaker Tower in Portsmouth credit: Steve Parsons/PA

Lightning storm over the English Channel seen from Brighton beach credit: Max Langran

A lightning display over the Brighton horizon credit: Max Langran

The British Airways i360 is lit up by lightning in Brighton credit: Max Langran

A lightning bolt lights up the night sky over Portsmouth credit: Steve Parsons/PA

The lightning storm captured over Guildford credit: Richard Waters/REX/Shutterstock

He said the nature of the thunderstorms would be "hit and miss" and that the showers should move through the country "relatively quickly".

After a warm night, temperatures are expected to remain high on Wednesday for parts of eastern England where the mercury could rise to the low 30s, Mr Keates added.

Cambridgeshire police said the adverse weather conditions have caused problems with its non-emergency 101 service.

Water had to be pumped out of a number of properties in Tunbridge Wells, the fire service said, after it received more than 60 calls to the 999 line within one hour.

Crews from Kent Fire and Rescue Service attended but, despite two of the calls stating that people were trapped inside properties, no rescues were needed.

Residents and business owners affected by the flooding in Coverack have been told council reserves will be used to help repair the damage.

A man looks at a damaged driveway caused by water from flash flooding in the coastal village of Coverack in Cornwall credit: Ben Birchall/PA

An entrance to a bed and breakfast property is block by rocks and debris from flash flooding in Coverack credit: Ben Birchall/PA

Debris in the village of Coverack after flash flooding credit: Matt Cardy/Getty

Adam Paynter, leader of Cornwall Council, told BBC Radio Cornwall: "With things like this, money won't be a problem - we do have reserves we can use for this type of incident."

Speaking from the west Cornwall village, he added: "It's been absolutely unbelievable to see. I think it's going to take a little while to get this sorted out and tidied up but obviously the main thing is that nobody's been injured and everybody is okay in the village.

"The council and the emergency services have done a great job, they've been here all night to ensure that everybody is safe and they are doing what they can to make sure everything can get back to normal as soon as possible."

Cornish Coastguard Services attend the scene following a flash flood credit: Matt Cardy/Getty

Cornwall Fire and Rescue Service said crews remained in Coverack on Wednesday morning.

"Cornwall Fire and Rescue remains in attendance on scene, working with the community to salvage," a spokeswoman said.

"Reliefs are being arranged for crews on scene. It is expected that the fire service will remain in attendance until midday, assisting the community."

UK weather forecast: Wednesday, July 19

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Here's what the weather is expected to be like in your region today.

London

It will be dry with bright or sunny periods, especially during the course of the afternoon. Moderate south-westerly winds. Very warm and muggy again. Max temp 24-27C (75-81F).

Kent

It is going to be mainly cloudy in the morning. Sunny periods later, but the chance of an isolated thundery shower too. Cooler with a moderate south-westerly wind. Max temp 22-25C (72-77F).

East Anglia

It is expected to be dry for much of the time with hazy sunshine, but there is the chance of a thundery shower later. Moderate south-easterly winds. Feeling hot and muggy. Max temp 26-29C (79-84F).

Berkshire/Surrey/Hampshire

It will be mainly overcast with cloudy skies and the chance of a heavy shower in the afternoon. Cooler with a moderate south-westerly wind. Max temp 22-25C (72-77F).

Essex

A clear start. It will then be mostly cloudy in the morning. Brighter spells later, but the risk of an isolated thundery shower too. Moderate southerly winds. Very warm and humid. Max temp 23-26C (73-79F).

Lincolnshire

It looks set to be generally bright with spells of hazy sunshine, but there is a risk of a thundery shower later. Moderate south-easterly winds. A very warm and humid day. Max temp 23-26C (73-79F).

Herefordshire/Staffordshire/Shropshire

After thundery showers at first, it will become mostly cloudy with grey skies and the chance of a thundery shower during the afternoon. A dry but still rather cloudy evening. Moderate southerly winds. Very warm and humid again. Max temp 23-26C (73-79F).

Channel Islands

An increasingly windy day once more. Largely dry initially, but then rather wet with rain and drizzle for a time. Some sunshine later, but still the chance of an isolated thundery shower. Fresh south-westerly winds. Warm and humid. Max temp 22-25C (72-77F).

Somerset/Dorset/Devon/Cornwall

An increasingly windy day. It will be a rather unsettled day with grey skies and outbreaks of showery rain, mostly light. Remaining wet through the evening. Brisk westerly winds. Max temp 20-23C (68-73F), but cooler along the north coast due to an onshore wind.

Flash flooding hit the coastal village of Coverack in Cornwall credit: PA

South Wales

Largely dry initially, but then rather cloudy and wet with outbreaks of rain at times, generally light. Further rain is expected during the evening too. Cooler with a moderate south-westerly wind. Max temp 21-24C (70-75F).

North Wales

It is expected to be a generally unsettled day with a lot of cloud and showers or longer spells of rain, mostly light. Remaining wet into the evening. Cooler with a brisk south-westerly wind. Max temp 20-23C (68-73F).

Lancashire/Merseyside

It will be unsettled and wet for much of the day with showers or more persistent rain, heavy at times with thunderstorms likely. Further evening rain. Fresh easterly winds. Max temp 22-25C (72-77F).

Cumbria

It is expected to be very unsettled with overcast skies, heavy showers and thunderstorms for much of the day. Some torrential downpours are likely. Rain easing by evening. Brisk easterly winds. Max temp 21-24C (70-75F).

Isle of Man/Irish Sea

It looks set to be very unsettled and thundery throughout the day with frequent heavy showers or more persistent heavy rain. More persistent rain by evening. Fresh easterly winds. Max temp 17-20C (63-68F).

East Midlands

Early thundery showers will generally clear. Then overcast with cloudy skies and scattered heavy showers, mostly later, with the small chance of thunder. A dry end to the day with some late spells of sunshine. Moderate south-easterly winds. Humid. Max temp 22-25C (72-77F).

Yorkshire/Humberside/Northumberland

It is going to be mixed with patchy light rain in places, clearing to leave scattered thundery showers. Persistent rain developing again through the evening. Moderate south-easterly winds. A very warm and humid day. Max temp 23-26C (73-79F).

Scottish Borders

It will be an unsettled day with showers or longer spells of rain, mostly light at first but becoming increasingly heavy and thundery later. Brisk south-easterly winds. Max temp 18-21C (64-70F).

Central/Edinburgh/Fife/Tayside

It is going to be unsettled and wet for much of the day with showers or more persistent rain, mostly light in the morning but heavier with thunderstorms likely later. Cooler with a moderate easterly wind. Max temp 16-19C (61-66F).

Grampian

It is expected to be dry for a time, but mostly cloudy. Sun and scattered showers during the afternoon. More persistent rain by evening. Cooler with a moderate south-easterly breeze. Max temp 17-20C (63-68F).

Dumfries & Galloway/Ayrshire & Lanarkshire

It will be very unsettled and thundery through the day with frequent heavy showers or more persistent rain. Staying wet during the evening but the rain should ease. Moderate easterly winds. Max temp 20-23C (68-73F).

Glasgow

It is expected to be very unsettled with overcast skies, heavy showers and thunderstorms for much of the day. Some torrential downpours are likely. A wet evening too. Cooler with a moderate easterly breeze. Max temp 20-23C (68-73F).

Highlands

Following a clear start, it will be mainly dry with hazy sunshine, but also the chance of an isolated shower later. Moderate south-easterly winds. Staying warm. Max temp 20-23C (68-73F).

North Sea

It will be largely dry and bright with spells of sunshine and variable amounts of cloud. A wet evening though with light rain or drizzle. Moderate easterly winds. Warm again. Max temp 19-22C (66-72F).

Northern Scotland

A windy day. It is going to be dry with sunny intervals and variable amounts of cloud. Damp during the evening though with patchy rain and drizzle. Strong south-easterly winds. Warm. Max temp 19-22C (66-72F), but cooler along much of the coast.

Argyll & Bute

It will be cloudy with the chance of patchy light rain for a period. Hail and thunder showers possible during the afternoon. More persistent and heavy rain during the evening. Cooler with a moderate easterly breeze. Max temp 16-19C (61-66F).

West Scotland/Western Isles

It is going to be bright with sunshine and light showers, more especially during the afternoon. Showers merging into more persistent rain by evening. Moderate easterly winds. Warm despite the showers. Max temp 20-23C (68-73F).

Orkney

A windy day. After a bright start, it will be mostly cloudy in the morning. Brighter spells later, but with isolated showers too. A dry but cloudy end to the day. Strong south-easterly winds. Max temp 14-17C (57-63F).

Shetland

A generally fine day, as it will be dry and bright with sunny spells and variable amounts of cloud. Moderate easterly winds. Max temp 13-16C (55-61F).

Northern Ireland

It is expected to be cloudy with the chance of patchy light rain for a period. Hail and thunder showers during the afternoon. Persistent rain developing again through the evening. Cooler with a moderate south-easterly breeze. Max temp 18-21C (64-70F).

Republic of Ireland

Across much of the country, it is going to be very unsettled and thundery throughout the day with frequent heavy showers or more persistent heavy rain. Just the odd spot of rain by evening. A cooler feel with a moderate south-westerly wind. Max temp 18-21C (64-70F), but cooler along the west coast due to an onshore wind.

What will the weather be like tomorrow?

A much drier and brighter day on Thursday for many, but it will feel fresher. Rain over Northern Ireland will move into western areas later.