we are also enhancing our pumps and drainage systems so that we can get water away more quickly and keep the infrastructure working. lilli matson, thank you forjoining us on this edition of weather world. one of the biggest storms to hit the uk in 2021 came at the end of november, as storm arwen brought damaging winds of up to 98mph. falling trees caused widespread disruption, with this one narrowly missing a drinker as it crashed into the back of a pub in wales. tens of thousands of trees came down in the worst affected parts of scotland and north east england and power was lost to more than 200,000 homes. now to some of your weather watcher pictures, showing the snow that followed storm arwen, which was unusually heavy and widespread for the time of year, particularly across northern england, and compounded the problem for those people that had lost power and heat to their homes. but despite the cold end to the season, overall the uk had its third warmest autumn on record, and the wa
we re putting down concrete, tarmac, all those new houses, all those roofs. that surface water is going to increase anything between eight and 18% per small development. and you ve got to think about where it s going to go. the drains are already at well over capacity and just can t deal with it. joining me now here at london s southwark station is lilli matson from tfl. lilli, how concerned is tfl about the forecast of more frequent extreme rainfall in a warming world? we re very aware that london s climate is changing. we re seeing warmer weather winters, drier, hottersummers. this all puts a lot of stress on our transport network and it s something we re really planning for now and taking account of so that we re ready as the climate becomes more extreme in future. there was some significant flash flooding in london in the summer. of course we saw those horrific scenes on the metro system in china. how much has this been an alarm call for tfl? we looked with real serious concern