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 ...

There are a number of ways to measure the magnitude of an earthquake. Most scales are based on the amplitude of seismic waves recorded on seismometers. These scales account for the distance between ...

A 5.2-magnitude earthquake near San Diego rattled Southern California on Monday morning. The quake centered near San Diego, ...

An earthquake measuring 5.2 in magnitude struck the interior of San Diego County, California, on Monday. The unfortunate ...

A 5.2 magnitude earthquake struck northeast of San Diego at about 10:08 a.m. on Monday. Shaking was felt as far away as Los ...

Quake came from depth of 17 kms A 3.1 magnitude earthquake was felt at 03:44 this morning in the Évora region, according to IPMA meteorological institute. With its epicentre close ...

The Richter Scale measures the magnitude of earthquakes from 0 to ... Scale for many years but now largely follow the Modified Mercalli Intensity Scale, which the US Geological Survey says is ...

The agency initially recorded the magnitude at 6.0 before revising it ... The tremors were recorded at intensity levels II to III on the Modified Mercalli Intensity (MMI) scale in Ternate City and ...