The magnitudes maps show how often an earthquake of, or above, a certain size is expected to occur within a specific radius and period.

The probability of an earthquake of, or above, a certain magnitude is considered. There is no direct link to the possible effects of an earthquake, since these do not only depend on the magnitude, but also on the distance to the hypocenter, its depth, and the local subsoil. For example, an earthquake with a magnitude of 4.5 in the immediate vicinity will cause similar damage as an earthquake with a magnitude of 6 and its epicenter 75 km away.