Others will post up ideas. The warmfloor idea may be for you.
You had better protect the pipes fast with the kind of weather you are having!!! I would let the water drip all night to prevent freezing. If you have a crawlspace or access to the pipes, I would get heater tape on them quick. In the meantime, could use a space heater to temporarly warm the area. Keep in mind, constant use of space heaters can be dangerous!