A magnitude 6.8 earthquake hit off Guatemala's Pacific coast on Thursday, shaking much of the country and neighboring El Salvador. Local officials said there were initial reports of only minor damage. (June 22)

A magnitude 6.8 earthquake struck Thursday off Guatemala's Pacific coast, the US Geological Survey reported, causing some minor damage.

A magnitude 6.8 earthquake struck off of Guatemala's Pacific coast Thursday, the US Geological Survey reports. The quake was recorded at about 24 miles (38 km) from the city of Puerto San Jose, according to the USGS.

A magnitude 6.8 earthquake has been reported off the Guatemalan coast.

It was an earthquake felt on Twitter — and nowhere else.

Earthquakes in northern Arkansas are being linked to the weight of extra water at a flood-swollen reservoir.

Blame it on Bull Shoals Lake, swollen by spring floods.

Understanding slow-slip earthquakes in subduction zone areas may help researchers understand large earthquakes and the creation of tsunamis, according to researchers who used data from instruments placed on the seafloor and in boreholes east of the Japanese coast.

California's earthquake faults continually accumulate stress until they fail in an earthquake. Seismologists studied the impact of the flexing of Earth's crust under the load of winter rains and subsequent unloading during summer drought, and found that the up and down movement of the mountains changes the stresses on the state's faults, making them fail slightly more often as the snows melt and the rivers drain in late summer and early fall.