A magnitude 8 earthquake releases as much energy as detonating 6 million tons of TNT ... To help distinguish it from magnitude scales, the MMI scale uses roman numerals. Although the Mercalli scale ...

Earthquake Magnitude Scale Magnitude Earthquake Effects Estimated Number Each Year 2.5 or less Usually not felt, but can be recorded by seismograph. Millions 2.5 to 5.4 Often felt, but only causes ...

A magnitude 5.3 earthquake struck off the Pacific Coast ... the tremors as level two on the Modified Mercalli Intensity (MMI) Scale, which measures the intensity of seismic shaking.

TEMPO.CO, Jakarta - An earthquake with a magnitude of 5.5 jolted the northwest coast of Tolitoli Regency, Central Sulawesi, ...

A magnitude 5.3 earthquake struck off the Pacific Coast ... the tremors as level two on the Modified Mercalli Intensity (MMI) Scale, which measures the intensity of seismic shaking.

Another message was issued at the earthquake’s peak intensity 4.6 seconds later, according to a post-ShakeAlert message summary. USGS said people within modified Mercalli intensity (MMI ...