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'March winds and April showers bring forth May flowers'
Depending upon which definition you use, there are actually two different dates that mark the first day of spring.
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.
How to avoid a camping disaster in dodgy great British weather, from the experts at The Scouts Association.
Please note that when changing units, only forecasts and maps will be affected.