Depending on the circumstances of a natural disaster that is? If it's not serious, it can be told in time near, but if serious, should tell you know that in order to be prepared for disasters.
Depending on the circumstances of the disaster that is like. If not fatal, it can tell the time in, but if serious thought as to how to prepare the adversary.
Depending on the situation of natural disasters? If not serious can tell in time close, but if serious should tell know go to in order to prepare the disaster.