eruption (n.) 1
disturbance, outbreak of calamity, turbulence
1H4 III.i.25 [Hotspur to Glendower] Diseased nature oftentimes breaks forth / In strange eruptions
Ham I.i.69 [Horatio to Marcellus and Barnardo, of the ghostly vision] This bodes some strange eruption to our state
JC I.iii.78 [Cassius to Casca, of weird happenings] A man no mightier than thyself ... / And fearful, as these strange eruptions are