When moist warm air rises over mountains, the air cools and condenses forming clouds bringing rain, once air passes over the mountains it descends and warms
What is convectional rainfall? (happens during Uk summer)
When the sun heats the land, it creates rising pockets of warm air, known as convection currents, warm air rises rapidly and starts to cool and condenses into clouds, causing them to produce heavy rainfall
What is frontal rainfall? (happens all year round)
When a warm front meets a cold front, the heavier cold air sinks to the ground and the warm air rises above it, which then cools and condenses to form clouds and bring heavy rain