PHIVOLCS Earthquake Intensity Scale

Many people are frightened; many run outdoors. Some people lose their balance.

People are panicky. People find it difficult to stand even outdoors.

People are forcibly thrown to ground.

Practically all man-made structures are destroyed.

Perceptible to people under favorable circumstances.

Felt by many people indoors especially in upper floors of buildings.

Generally felt by most people indoors and outdoors. Many sleeping people are awakened.

Felt generally by people indoors and by some people outdoors. Light sleepers are awakened.

Felt by few individuals at rest indoors.

Many well-built buildings are considerably damaged. Concrete dikes and foundation of bridges are destroyed by ground settling or toppling.