You can have a time bomb, a stink bomb, and a sex bomb, so why not a weather bomb? That term has been featuring in British weather forecasts this week. It refers to a rapid intensification of stormy weather, the definition being a rapid drop in pressure at the centre of the storm of 24 millibars within the space of 24 hours.
I heard a Met Office employee speaking on the radio, who said that weather bomb is a US term. It is certainly snappier than the term used by British meteorologists - explosive cyclogenesis. Here's BBC weatherman Peter Gibbs explaining the phenomenon in a video clip.