i think i mentioned it before: tornadoes are the scariest natural disaster IMO. they will obliterate everything in their path short of a Fort Knox safe (which they can still throw across 6 lanes of freeway). do your animals act wierd if they know something is coming? i've always heard they got like this 6th sense for this kind of coming thing. we have sirens around us also to warn about volcanoes (i.e. Mt. St. Helens, Mt. Rainier) and sirens along the coast (for tsunami's). i'm not sure if we have ICBM sirens tho.
is stormchasing something big in your area BTW?