Alaska has been shaken up by seven earthquakes on Sept. 16, according to the United States Geological Survey. We look at where they hit and how big they were.

The largest recorded earthquake in United States history was the 1964 Great Alaska earthquake, which struck on March 27, 1964, and registered magnitude 9.2 on the moment magnitude scale, according to the USGS.

Closely monitored Barry Arm is a test case in a region where melting glaciers, steep slopes and narrow fjords set up conditions for dangerous tsunami-generating slides.

ENSENADA, B.C. - A 2.8 magnitude quake was detected close to Alberto Oviedo Mota, B.C. Sunday morning, according to the U.S. Geological Survey.

According to the Alaska Earthquake Center, the Aleutian megathrust is the primary cause of the strongest earthquakes in the region. The Aleutian megathrust is a major subduction zone fault, an area where two tectonic plates meet.

JUNEAU, Alaska -- A reported 7.5 magnitude earthquake off the Alaska Peninsula on Monday prompted tsunami warnings for a vast swath of communities, leading some schools to evacuate and send students to higher ground. The size of the quake was originally ...

Scientist have been researching how much of a warning Alaskans could get with an earthquake early warning system.