Thunderstorms will ravage most of the UK today, ahead of a summer scorcher this weekend.
The north-east is tipped to be in the middle of a 60-hour thunderstorm, however the Met Office has revised its predictions and now believes there will be rainfall instead of lightning today.
But a thunderstorm weather warning remains in force for almost all of England – apart from the south-west – and north-east and central Wales.
A storm alert has also been issued for north-east, east, central, south and south-east England tomorrow.
There is a chance of flooding in the areas affected by the weather warnings.
Cloud is expected across the whole of the UK today, although temperatures in England will remain high.
The mercury will even reach 26C in Norwich today, with sunshine expected for much of south-west England, although temperatures will fall again tomorrow.
Things will start to pick up on Wednesday as the country basks in sunshine.
The mercury should rise to around 24C in south England, 23C in south Wales and 21C in parts of Scotland.
Thursday looks set to be a gloriously sunny day for the whole of the UK, although it will not be quite as hot as the weekend, with the mercury rocketing from Friday onwards.
The weekend heatwave will take hold on Friday as temperatures soar to 28C in London and then reach 30C on Saturday.
The scorching heat in the south-east will subside on Sunday, dropping back down to a maximum of 25C, with the return of cloud.
Met Office chief meteorologist Dan Suri previously said: “It’s going to feel much hotter for most areas across the UK this week.
“Our latest forecasts show the highest temperatures are expected towards the end of the week, most likely across central and southwest England, where temperatures could rise into the low 30s Celsius.
“This will be in stark contrast to the low temperatures we’ve had so far this June . It’s also going to feel humid and quite muggy – especially at night time – as temperatures could remain in the high teens or low 20s Celsius in places.
“Whilst some places within warning areas could miss thunderstorms altogether and enjoy a warm, bright day, where they do develop torrential downpours, hail, lightning and gusty winds are likely and a few spots could see as much as 40-60mm of rain in one hour – which is very unusual for the UK.
“With the potential for a large volume of water in a short time, there is a significant risk of flash flooding, fast flowing or deep flowing water causing danger to life and very difficult driving conditions in places.”
However, a spokesman for Netweather.tv warned that more recent forecasts have said it will be colder than originally expected this week.
They said: “Temperatures will reach into the mid-high twenties on many days [this] week, perhaps higher at times too, with the thirties Celsius probable in some places.
“It’s not looking quite as hot as it seemed it might be a couple of days back, but there are still a lot of uncertainties in terms of the details this week.”
The Met Office previously warned that there would be flooding again this week.