Weather prediction contributes to important issues - for example, feeding emission scenarios into the COP agenda to assess climate change impacts. For people in general, it has made today's five day forecast as good as the one day forecast from 40 years ago. This modelling has traditionally been driven by brute force computing, based on Moore's law, but where is it going next? Professor Penny Endersby CEO of the Met Office and BCS' 2021 Society medal winner, speaks to Brian Runciman between storms Dudley and an embryonic Eunice about supercomputers, cloud, the surprising role of quantum and her career to date.