It's amazing just how much wetter mountainous areas are in western Britain as opposed to low-lying or hilly areas. Since I started receiving Weather Log, Durham's heaviest 24 hour fall was 54mm on 3 June 2000. However, that was a near record breaking event in Durham in itself, and no other months since I got the logs exceeded 30mm max per day. In Lancaster 24 hour falls of 20 to 50mm are more common than in Durham, but even here, the record appears to be 56mm. And even the very wet upland location of Eskdalemuir hasn't exceeded a 70mm daily fall, at least since September 1999 according to Weather Log. It really is amazing how much rain can be dumped on those mountains. Somewhere exceeded 500mm rain in the last few days alone- that's half Lancaster's annual average, and roughly 80% of Durham's!