(as posted above, whilst I was typing this out...)
Yes, but the Met Office issues colour coded weather alerts in advance over here - and it's reported on the main network news (BBC One, ITV, C4, C5, Sky News and BBC News channel - and the last twos own tickers scroll the weather warnings as well), BBC/ITV regional news, and national/local weather forecasts for TV, Radio and On-line, plus retweets via social media all mention it with increasingly manic hysteria - so you've got to have your head in a tub of readymix concrete not to know there's something ominious on the way with the weather.
It's not uncommon for captions about the weather, though.
I can remember seeing a couple of lower thirds from BBC Midlands, appearing over a network programme back in the 1980's during a unusually strong wind and heavy snows. Schools were closed, public transport winding down, and the caption was directing people to their local BBC Local Radio station were the 'snow desks' were all fired up and ready to go with the latest information.
And to be honest, local radio (mainly BBC, but commercial radio - does as well, when it's forecast to be bad) is still the go to place for people to find out where the drifts and road closures are.
Crawlers, tickers and lower/upper thirds would just be repeating information already given out.
My user name might look like Hatton Cross, but it's pronounced Throatwobbler Mangrove.