Answer: earthquake

AnswerCrossword Clue
EARTHQUAKENatural disaster
earthquakeA great convulsion or upheaval
earthquakeA sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action
earthquakea quaking or shaking of the earth
EARTHQUAKEIt could be catastrophic
EARTHQUAKECatastrophic event
EARTHQUAKECalifornian's worry
EARTHQUAKEEvent in N Calif.: Oct. 17, 1989
EARTHQUAKESeismologist's concern
EARTHQUAKENatural event
EARTHQUAKERichter-scale event
EARTHQUAKES.F. headline of 1906
EARTHQUAKEUpheaval.
EARTHQUAKEGround-breaking, king size.
EARTHQUAKESeismograph find.
EARTHQUAKEDisaster.
EARTHQUAKETemblor.
EARTHQUAKECapp's McGoon.