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The United States Geological Survey (USGS) reported on a seismic event involving a magnitude 4.3 earthquake in Southern California on Thursday, August 5th, according to real-time data. The earthquake took place approximately 4 miles west of Muscoy, California, at 9:32 a.m. Pacific Time. The U.S.G.S. previously stated that the earthquake was a 4.2 magnitude, though revised measurements later confirmed the larger magnitude of 4.3.
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The immediate aftermath of the earthquake (Shake intensity 4 or greater) was observed in the epicenter area, which includes urban centers and areas facing damaged infrastructure. severities vary, and the shaking affected both residents and visitors in nearby areas.
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The earthquake caused aSW (Aftershocks) in the same region. Aftershocks are smaller earthquakes that occur after a larger one and are still being tracked by U.S.G.S. The region affected by the earthquake still received some shaking intensity, despite not being the epicenter.
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The updated shake-severity maps, as of today, show areas with shake intensity levels of 4 or greater are described as “light” by the USGS, though the earthquake may be felt outside the immediate focal zone. This indicates that while the shaking intensity was medium to large, it was not widespread or felt significantly outside the earthquake’s epicenter location.
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Aftershocks can occur in the same area and affected surrounding zones within 100 miles, as further away shaking intensities are generally lower. These events can occur either within 100 miles of the epicenter or can be six to seven days later, potentially experiencing similar or larger magnitudes.
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The United States Geological Survey is in progress with the 9:55 a.m. Ester map and 12:20 p.m. Ester map. Mission students from the New York Times will provide updates through a blog, “The earthquakes…” which will be available as of July 31, 2023. Meanwhile, the USGS maintains real-time maps with live data as it becomes available.
