The map below shows where Friday's quakes hit: When looking at earthquake data over the past 30 days, next to California, earthquakes seemed to strike most frequently in Nevada, Utah, Idaho ...

Northern Arkansas has seen a series of small earthquakes over the last 30 days. An area from Bull Shoals ... Click on the map ...

When aftershock data is available, the corresponding maps and charts include earthquakes within 100 miles and seven days of the initial quake. All times above are Japan time. Shake data is as of ...

The earthquake struck around 11 kilometers southeast of York Harbor, Maine, just before 10:30 a.m. E.T. on Monday ... but the East Coast isn't immune. Last April, a 4.8 magnitude earthquake ...