Despite people basking in the sun after the hottest day of the year over the weekend, the sunny streak is set to come to an end as a warning of thunderstorms is used.

The Met Office has issued a yellow warning across a large region in England including Hertfordshire, of thunderstorms and potential flooding from Wednesday (June 16) and Friday (June 18).

According to the forecaster, there is a small chance that homes and businesses could be flooded quickly, with damage to some buildings from floodwater, lighting strikes, hail and strong winds.

Delays and road closures are expected from any sudden flooding or severe lighting strikes, and there could be difficult driving conditions.

There is also a slight chance of power cuts and loss of other services from the disruptions.

However current forecasts for Watford appears to show less of a dramatic turn of events.

On the Wednesday, the chance of precipitation appears low and there is no indication of a thunderstorm – in fact, it appears to continue the sunny streak with temperatures up to 26 degrees Celsius, and sun forecasted for the whole day.

Thursday will be a rainy day, albeit a warm one with temperatures up to 21 degrees Celsius, however current forecasts again do not indicate thunderstorms.

On Friday, the weather again will be a rainy one.

Met Office meteorologist Greg Dewhurst told the PA news agency temperatures will have peaked on Wednesday, but despite the risk of more showers the rest of the week would “still be on the warm side”.

He said: “Temperatures on Thursday are expected to be around 26 to 27C across south-east England and East Anglia.

“And then through the rest of the week we’ll generally see a mixture of sunny spells and a few showers, and temperatures around 24 to 25C.

“So it’s not quite as hot for the rest of the week compared to the maximum temperatures on Wednesday, but still staying above average for this time of year.”