|Witness Perceptions and Damage
|Felt by very few people; barely noticeable.
|Felt by a few people, especially on upper floors.
|Noticeable indoors, especially on upper floors, but may not be recognized as an earthquake.
|Felt by many indoors, few outdoors. May feel like heavy truck passing by.
|Felt by almost everyone, some people awakened. Small objects moved. Trees and poles
|Felt by everyone. Difficult to stand. Some heavy furniture moved, some plaster falls.
Chimneys may be slightly damaged.
|Slight to moderate damage in well built, ordinary structures. Considerable damage
to poorly built structures. Some walls may fall.
|Little damage in specially built structures. Considerable damage to ordinary buildings,
severe damage to poorly built structures. Some walls collapse.
|Considerable damage to specially built structures, buildings shifted off foundations.
Ground cracked noticeably. Wholesale destruction. Landslides.
|Most masonry and frame structures and their foundations destroyed. Ground badly cracked.
Landslides. Wholesale destruction.
|Total damage. Few, if any, structures standing. Bridges destroyed. Wide cracks in
ground. Waves seen on ground.
|Total damage. Waves seen on ground. Objects thrown up into air.
What Are Earthquake Hazards?