A yellow weather warning has been issued by the Met Office as heavy rain is set to cause disruption to the capital today.
From 1pm the weather warning will be in place and is expected to last until 9pm.
Heavy showers are expected to develop this afternoon and whilst most places will miss the worst, some showers could be slow moving and there is a chance of that 20-25 mm of rain might fall in an hour with perhaps 50 mm in 3 hours.
If the heaviest showers fall over built up areas prone to flooding, small watercourses or transport networks, possible impacts could include significant travel disruption, flooding affecting properties, communities and key infrastructure.
Due to the localised nature of the heaviest showers, impacts may be isolated with not all locations being affected.
There is a small chance that homes and businesses could be flooded, causing damage to some buildings along with fast flowing or deep floodwater Spray and flooding could lead to difficult driving conditions and some road closures.
Where flooding occurs, there is a chance of delays or cancellations to train and bus services
There is a slight chance of power cuts and loss of other services to some homes and businesses There is a small chance that some communities become cut off by flooded roads
The showers will ease during Tuesday evening.
The public are advised to remain vigilant and remember, it is your responsibility to take actions which help protect yourself and your property.
Advice and information is also available through Floodline on 0345 9881188.