A second earthquake of at least 2.5 magnitude in 12 hours struck Thursday afternoon in western Washington. The 3.2 magnitude earthquake was recorded about 4.5 miles northeast of Fall City in east King ...

This earthquake is larger than much of the recent seismic activity around western Washington, according to initial reports.

Another scale is based on the physical size of the earthquake fault and the amount of slip that occurred ... the building (or other structure) design, and the type of surface material (rock or dirt) ...

Earthquakes occur along fault lines between continental plates ... The rock layers themselves along this fault line are a mixture of different types of rocks. The region the researchers examined ...

Earthquakes happen every day all over the world, along both tectonic plate edges and interiors. Earthquakes occur along faults, which are fractures between blocks of rock that allow the blocks to move ...

A new analysis of earthquake rupture directivity provides essential insights for seismic hazard and risk assessments in urban ...

The Pacific Northwest typically experiences three types of earthquakes: Shallow fault quakes: Ruptures in faults located in the upper 18 miles of the Earth's crust. These earthquakes typically ...

The Pacific Northwest typically experiences three types of earthquakes: Shallow fault quakes: Ruptures in faults located in the upper 18 miles of the Earth's crust. These earthquakes typically ...