Seismic Intensity : Seven (VII) - Damaging

Seven (VII) : Difficult to stand. Furniture broken. Damage light in building of good design and construction; slight to moderate in ordinarily built structures; considerable damage in poorly built or badly designed structures; some chimneys broken or heavily damaged. Noticed by people driving automobiles.

Perceived Shaking

Very Strong

Potential Damage


Peak Ground Motion Acceleration

18 to 34 (%g)

Peak Ground Motion Velocity

16 to 31 (cm/sec)

Video Example

Intensity Seven (VII)

Reference: Modified Mercalli Intensity Scale (Adapted from Sieberg's Mercalli—Cancani scale, modified and condensed)