8legs: United states geological survey

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Map: 3.7-Magnitude Earthquake Shakes the San Francisco Bay Area

A 3.7-magnitude earthquake struck the San Francisco Bay Area, per the USGS, at 9:07 a.m. Pacific time near San Ramon.
USGS will review data and may revise the earthquake's magnitude as more information becomes available.
Aftershocks are common after a quake and can occur days, weeks, or even years later in the region.
Shaking maps use intensity scales to show areas affected, with maps noting shake categories based on the Modified Mercalli Intensity scale.
The article provides background on how aftershocks are tracked within 100 miles of the initial event.
The earthquake was centered about two miles southeast of San Ramon, California.
USGS-sourced data may be updated as scientists review new information.
The New York Times provides maps and context on shaking intensity and aftershocks.
The report lists aftershocks’ potential duration and impact in lay terms for readers.
The article uses the New York Times’ reporting to frame the seismic event and its context.

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