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Thunderstorms develop when the atmosphere is unstable - this is when warm air exists underneath much colder air. As the warm air rises it cools and condenses forming small droplets of water.
Blood rain is a term used when there is red-coloured rain falling from the sky, but what causes this to happen?
The colours you see when a rainbow appears are the result of light being split into its various individual wavelengths.
Advice and guidance for protecting yourself and your home in heavy rain and flooding.
Please note that when changing units, only forecasts and maps will be affected.