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Magnitude of earthquakes and effects

Mag Effects on Humans in close proximity to the epicentre Effects on Buildings Effects on the Environment
less than 2.5 NoneRegistered only by seismographs None None
2,5 A low rumble can be heard by people at rest  None None
3.0 Low rumble heard None None
4.0 Minor vibrations felt None None
5.0 Vibrations felt Movement of light objects None |
6.0 Vibrations strongly felt, injuries caused by the movement of objects Movement of objectsFallen chimneys Possibility of landslides, rockfalls
7.0 and higher Widespread fear, casualties Partial destruction of old buildings of modern buildings affected Landslides, widespread damage and possibility of a tsunami if the epicentre is offshore