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.
We will have the latest on Ashdown Radio across the day
Uckfield man sentenced for coercive control and assaults on woman in East Sussex
Drink-driver who crashed car into house is banned
Long term investment in Wealden’s leisure centres supports summer visitor numbers
Flooding forces Eastbourne roller-skating rink to close
£50,000 fundraising goal set for 'significant' Arlington Stadium repairs
Hailsham main road to remain closed for further five weeks as works move to second phase
Eastbourne MP to meet with new South East Water CEO to discuss 'ongoing challenges'
South East Water looking to repair leak in Eastbourne road ‘as soon as possible’