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A magnitude 3.4 earthquake hit the Fontana area Saturday, the U.S. Geological Survey said. The Inland Empire quake was centered just under five miles northwest of Fontana, the agency said.
The United States Geological Survey (USGS) reported a moment magnitude of 4.6 and a focal depth of 3.0 km (1.9 mi) for the earthquake. It had a maximum Modified Mercalli intensity of VI (Strong). [1] A magnitude 3.4 foreshock struck 1 month before the mainshock. [5] More than 30 aftershocks were recorded after the mainshock. [2]
The Modified Mercalli intensity scale (MM, MMI, or MCS) measures the effects of an earthquake at a given location. This is in contrast with the seismic magnitude usually reported for an earthquake. Magnitude scales measure the inherent force or strength of an earthquake – an event occurring at greater or lesser depth. (The "M w" scale is ...
Charleston, SC Earthquake – 1886. South Carolina earthquakes occur with the greatest frequency along the central coastline of the state, in the Charleston area. South Carolina is the most seismically active state on the east coast. [1] At 7.3 magnitude, the Charleston earthquake of 1886 was the largest quake to ever hit the Eastern United ...
They were preceded by a pair of earthquakes in early June — a magnitude 3.4 on June 2 and a magnitude 2.8 on June 4 — as well as a magnitude 2.9 earthquake in the same area June 24.
A 3.2-magnitude earthquake shook the Bay Area in Northern California, the U.S. Geological Survey reported.. The nearly 6-mile-deep quake hit about 4 miles east of Fremont at 9:35 a.m. on Thursday ...
For instance, an earthquake of magnitude 6.0 releases approximately 32 times more energy than a 5.0 magnitude earthquake and a 7.0 magnitude earthquake releases 1,000 times more energy than a 5.0 magnitude earthquake. An 8.6-magnitude earthquake releases the same amount of energy as 10,000 atomic bombs of the size used in World War II. [18 ...
LOS ANGELES (Reuters) -An earthquake of magnitude 4.7 shook the southern California city of Malibu and other parts of the Los Angeles region, the U.S. Geological Survey said on Thursday, but there ...