Surrey is set to be battered by thunderstorms and heavy rain ahead of the bank holiday weekend.
The Met Office has issued a weather warning for storms from just before lunchtime on Friday – and there could be hours of torrential rain, continuing into the evening.
Forecasters say up to 20mm of rain could fall within an hour – and up to 40mm in around three hours, causing disruption on the roads.
The yellow warning is in place for much of the south of England from 11am until 8pm on Friday.
The warning says: “Heavy showers and thunderstorms are expected to develop quite quickly later on Friday morning, but peaking during the afternoon for many, before probably becoming more restricted to the southeast and south coastal counties towards evening.”
The Met Office says that while some places will miss the heavier rain, other locations could have “30 to 40 mm in around 3 hours, sufficient to cause issues on the roads.”
It warns that where flooding or lightning strikes occur, there is a chance of delays and some cancellations to public transport.
Driving conditions could also become challenging and affected by spray on the roads.
The forecast also warns of damage to buildings and structures from lightning strikes.
Temperatures on Friday are expected to reach a peak of 18C at lunchtime, before turning cooler in the afternoon.
Calmer conditions are forecast for the weekend, with sunny intervals on Sunday and Monday, and a high of 17C.
Find out how you can get more news from SurreyLive straight to your inbox HERE.