This video focuses on how the accuracy of weather forecasts have increased through the use of computer technology and satellite observations and how MSG will add to this following its launch in August 2002. A dozen satellites, 7000 ships and 6000 weather stations monitor the weather and complement each other, allowing for 3-day weather predictions that have an accuracy of 80%. However, extreme weather conditions are still difficult to predict accurately, requiring much better datasets than are currently available. This is one of the reasons ESA developed MSG, which aims to provide meteorologists with much improved imagery and data at twice the speed.