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 ...

I Felt by very few people; barely noticeable. II Felt by a few people, especially on upper floors. III Noticeable indoors, especially on upper floors, but may not be recognized as an earthquake. IV ...

A light, 4.7-magnitude earthquake struck in Northern California on Wednesday, according to the United States Geological ...

One of the most commonly known earthquake-measuring tools is the Richter Scale, but the system is no longer used today. In fact, the Richter scale was replaced in the 1970s by other magnitude ...

The "Bad Blood" singer performed two Eras Tour shows in Lisbon on May 24 and May 25, 2024, and afterward, it was reported that the massive concerts at Estádio da Luz triggered seismic activity. It was ...