The Met Office has issued a yellow severe weather warning for the South East.
The alerts warn of heavy rain between 9pm tonight (Weds 4th Sept) and 23:59 on Friday 6th September.
Officials have warned that flooding, transport disruption and power cuts were possible across East Sussex.
Weather forecasters have said that some parts will miss the worst of the weather, but scattered heavy showers on Wednesday night are expected to merge into longer spells of heavy or thundery rain overnight and into Thursday.
Downpours of up t 4inches of rain expected in some of the wettest areas, which is well above the whole of September's average rainfall.
Commuters and motorists are warned to expect spray and sudden flooding, leading to difficult driving conditions and some road closures.
Officials also warned that there was a small chance of damage to buildings, while delays to train and bus services were possible.
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