earthquake

nouns

shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity
earthquake, quake, seism, temblor
a disturbance that is extremely disruptive
"selling the company caused an earthquake among the employees"
earthquake
is a type of (narrower)
a disorderly outburst or tumult
"they were amazed by the furious disturbance they had caused"
commotion, disruption, disturbance, flutter, hoo-ha, hoo-hah, hurly burly, kerfuffle, to-do