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Earthquakes today
There are around 500,000 earthquakes each year. 100,000 of these can actually be felt. The largest earthquake ever recorded was a magnitude 9.5 (Mw) in Chile on May 22, 1960. The world's deadliest recorded earthquake occurred in 1556 in central China. It struck a region where most people lived in caves carved from soft rock. These dwellings collapsed during the earthquake, killing an estimated 830,000 people.
earthquakes today
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Richter scale table
Richter magnitudes Description Earthquake effects Frequency of occurrence
Less than 2.0 Micro Microearthquakes, not felt. About 8,000 per day
2.0-2.9 Minor Generally not felt, but recorded. About 1,000 per day
3.0-3.9 Very Light Often felt, but rarely causes damage. 49,000 per year (est.)
4.0-4.9 Light Noticeable shaking of indoor items, rattling noises. Significant damage unlikely. 6,200 per year (est.)
5.0-5.9 Moderate Can cause major damage to poorly constructed buildings over small regions. 800 per year
6.0-6.9 Strong Can be destructive in areas up to about 160 kilometres (100 mi) across in populated areas. 120 per year
7.0-7.9 Major Can cause serious damage over larger areas. 18 per year
8.0-8.9 Great Can cause serious damage in areas several hundred miles across. 1 per year
9.0-9.9 Extreme Devastating in areas several thousand miles across.
1 per 20 years
10.0+ Epic Never recorded.
Extremely rare (Unknown)

EarthquakesToday.info 2013 Credits: USGS (usgs.gov)