A YELLOW warning for heavy rain and thunderstorms has been issued for parts of Dorset for Thursday.
A spokesperson for the Met Office said: "Scattered heavy showers and thunderstorms are likely to develop across parts of southern and central England and east Wales during Thursday and last into the early evening.
"The public should be aware of risk of localised surface water flooding and the possibility of difficult driving conditions."
On Monday, the BP petrol station on Somerford Road in Christchurch was closed after it was struck by lightning for the second time this year.
Reader Mark Thorne caught the picture above of lightning in Canford Heath during Monday's storm.
The latest alert is valid from 12noon on Thursday until 8pm and as much as 30-40mm of rain could fall in three hours in some places.
The Chief Forecaster added: "A slack area of low pressure will move eastwards across southern Britain on Thursday.
"The airmass will be moist and unstable, and as daytime heating gets going, heavy showers and thunderstorms are likely to break out.
"The exact distribution of these remains uncertain.
"They could become aligned into slow-moving bands giving some places 10-15 mm of rain in less than and hour and perhaps 30-40 mm in 3 hours in the worst affected spots.
"However as is usual in such situations, some places will miss the worst of the rain."
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