Related Clues:

• It's earthshaking
• Earthquake's onset
• Shake a bit
• Land movement
• Earthquake warning
• Have the chills
• It comes as a shock
• Quiver
• Quaver
• 4.0, maybe
• Earthshaking event?
• Tremble with cold or fear
• Tremble
• Seismographic event
• Seismograph pickup