Bed weather?

I'm always fascinated by the rolling "Breaking News" text that is at the bottom of the screen during BBC news bulletins. Just yesterday the text said that rescue efforts in Indonesia following the volcano eruption had been affected by "bed weather". There a are many a morning that I wake up and think it's "bed weather" too, and contemplate just staying in bed rather than braving the wind and the rain outside, but I didn't think rescue services were afflicted by this as well...