There is a tornado warning on . My mother just told me she heard it on the radio .   What is a tornado warning ?   It means that a tornado has been seen somewhere in the area .   Really ? In New Berlin ?   No . Not necessarily in town . But in southern Wisconsin somewhere . A tornado has been spotted . They have two stages here.This is what is called a " tornado watch . " That means that the weather conditions are perfect for a tornado .   I understand . They think a tornado might come .   Yes . People should look out , because maybe there will be tornadoes coming.So it's called a " watch . " 