The weather forecast on TV or on the radio is generated using a massive bank of data that is collected and collated by super-computers.
The three main sources of data that are used in weather forecasting are:
In addition, another 100 coastguard stations and 100 automated stations also provide weather data.
This uses a type of pulse-Doppler that can show where rain is happening as live data.
Satellites have been used from the 1960s to take images from space of the weather that is happening across the world.
Polar-orbiting satellites will move around the earth from one pole to other at a height of 850km and will pass the same place every 12 hours.
Weather buoys are usually moored in the ocean and will send live weather and oceanic data back to weather centres for analysis.
These will help show any changes to weather in the atmosphere across a wide area.