Britain's weather forecaster, the Met Office, has signed a £33m contract with IBM for a new supercomputer that should improve forecasting.
The next-generation supercomputer is expected to be the second most powerful in the UK, equivalent to more than 100,000 PCs, and will provide more accurate and detailed short-range weather forecasts, says the Met Office.
It will be over 30 times more powerful than the system it will replace, and the Met Office says it will enable greater use of multiple simultaneous forecasts.
This means it will give earlier warnings of low-probability, high-impact weather events. It will also be used to progress research on climate change.
John Hirst, Met Office chief executive, said, "In a world where the effect of extreme weather events is becoming more severe, and the potential impact of global warming is becoming ever more apparent, the Met Office plays an increasingly vital role in researching and forecasting these events.
"The new supercomputer is an important step in delivering our strategic targets."