I've got about 5 weather apps. When I want to go walking, it helps to have lots of weather apps, as there's then more chance of finding a decent forecast.
I thought we had a super-duper drainage system. Edit: I must be thinking back further than I thought https://www.pitchcare.com/news-media/out-of-the-darkness.html
This snow that isn't forecast is coming down pretty heavily right now. Don't use the BBC for anything. It is a propaganda machine for the government and nothing else.
I use the same method for the exact opposite reasons. "Look, it's going to rain. Wouldn't we be better off just going to the pub."