Tools  /  Earthquake Shaking Simulator   Free

The magnitude isn't the story — the shaking is.

A magnitude number means little on its own; what matters is how hard the ground shakes where you are, and that depends on distance and depth as much as size. Drop an epicenter, set the magnitude, and see the intensity fan out — who feels a rumble, and who watches the walls come down.

Controls
Shallow quakes (3–9 mi) shake the surface hardest; deep ones spread weaker shaking over a wider area.
Intensity is Modified Mercalli (MMI); rings mark where each level of shaking reaches.
Click to place the epicenter →

Seconds of warning, a lifetime of difference.

Drop, cover, hold on — then check gas, water and structure. Knowing your shaking risk shapes how you build and store.