A heat-health alert and a yellow weather warning have been issued for various areas of the UK, following a warning of thunderstorms.
The UK Health Security Agency issued the first yellow heat-health alert for 2025, with temperatures potentially exceeding 30C.
The alert covers areas of the East Midlands, Eastern England, London and the South East.
It is due to begin from 9pm on Thursday and will run until 8am on Sunday morning.
Yellow weather warnings have been issued across the country
Met Office
On Thursday, an area stretching from the South West of England to the North of Wales, as well as Northern Ireland, could see heavy rain and thunderstorms.
Another warning will come into effect at 3pm on Friday across East Anglia, London and parts of the South East.
The alert warns of disruptions from thunderstorms and is set to run through Friday night, until 6am on Saturday.
The Met Office stated that the conditions could lead to flooding and damage to roads and properties.
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Forecasters have also warned of strong winds, hail and lightning strikes.
The wet weather comes after last spring was the sixth driest spring since records began in 1836, with just 128.2mm of rainfall.
A yellow alert has also been issued for an increased risk to health for vulnerable individuals and those over 65 years of age.
The head of extreme events and health protection at UK Health Security Agency, Dr Agostinho Sousa, said: "Our findings show that even moderate heat can result in serious health outcomes, especially for older adults, and it is therefore important that everyone takes sensible precautions while enjoying the sun.
"The forecasted high temperatures are expected to be short-lived but could primarily impact those over the age of 65 or those with pre-existing health conditions.
"If you have friends, family or neighbours who are more vulnerable, it is important to check in on them and ensure they are aware of the forecasts and are following the necessary advice."
Thunderstorms are set to hit the UK
PAMet Office meteorologist Alex Deakin said: "The jet stream becomes more amplified and more pushed to the north, and that means air coming up from the south.
"As hot air wafts its way from the south, we will tap into that warmth and that humidity and weather fronts will provide moisture and that spark to create thunderstorms.
"We are likely to see more widespread sunshine as high pressure builds for Wednesday, with weather fronts being kept at bay, allowing warming air to waft northwards, so Wednesday will start to see temperatures ticking up widely with a lot of fine weather."
Southern parts could hit 30C by the end of the week, Deakin said, with sultry nights making sleeping a nightmare.
He stated: "There are some angry-looking showers to the southwest, and that is the first of our sets of thundery showers heading northwards, likely during Wednesday night.
"On Friday, there is a small chance we may even get to 30C, but it will be cooler where it is cloudier further west, and down to the southwest, another pulse of thunderstorms likely to spread north during Friday night and into Saturday, and this clutch of storms will be a little angrier with more lightning and a greater risk of hail."
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