Original article from Kent Live
The heatwave is set to be interrupted with a sudden thunderstorm – with rumbles already being felt across the county.
The Met Office has issued a sudden weather warning that a "line of thunderstorms has now formed over southeast England".
Forecasters say it is "expected to persist for the next few hours".
It is thought the thunderstorms could solve the mystery of the "potential earthquake" rumbles felt in Dover and Thanet
Although the Met Office's thunderstorm warning map does not include Dover or Thanet.
Residents have been warned there could be flooding to homes and businesses or structural damage.
The yellow weather warning states that driving conditions will be affected, there may be delays to trains and power cuts are possible.
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Earlier today, forecasters said they expected the storms to roll in at the end of the week.
But it seems we could be in for thunder and lightning much sooner than they predicted.
The warning has been put in place from 4.07pm until 7pm today (July 19).
Affected areas include Tunbridge Wells, Lydd, Cranbrook and much of the Weald.
People in Maidstone may also experience thunderstorms
The Met Office said thunderstorms develop when the atmosphere is unstable.
A spokesman said: "This is when warm air exists underneath much colder air. As the warm air rises it cools and condenses forming small droplets of water.
"If there is enough instability in the air, the updraft of warm air is rapid and the water vapour will quickly form a cumulonimbus cloud.
"Typically, these cumulonimbus clouds can form in under an hour."