简介：Volcanoes,earthquakes,andtornadoesallcancauseenormousdamage,andpredictingwhereandwhentheywillstrikeisofgreatimportance.VolcanologistDr.MarieEdmondshasdevisedsensorsthatmonitortheundergroundactivityofmagmatobetterpredictfutureeruptionsontheCaribbeanislandofMonserrat,thesiteofthemassive1995eruptioncapturedforthisfilm.GeophysicistDr.RossSteinstudiedtheearthquakerepairrecordsinIstanbul'sHagiaSophiaoverthecenturiestofindcluesaboutthehistoryofearthquakesinTurkey.HediscoversapatterninquakesalongthelongNorthAnatolianFaultsystem,includingthemassivelydestructivequakeatIzmitin1999,andpredictsthenextearthquakejustafewmilessouthofIstanbul.Dr.JoshuaWurmanandhisteamchasetornadosintrucksequippedwithDopplerradarinanattempttoprobetheinteriorofatornadojustasitisborn.