Interior Alaskans felt the Earth move a bit on Tuesday morning. It wasn’t a big earthquake, at only magnitude 4.6, but it was widely felt at 7:18am. It’s note worthy, mainly because it has been a couple of years since I felt one pass through.
On Sunday morning, Kaktovik, which is located on the Beaufort Sea coast, woke up to a 6.4 magnitude quake. It was the largest earthquake ever recorded on Alaska’s North Slope.
Earthquakes in Alaska are far from unusual. An earthquake is detected once every 15 minutes, on average, within the state. In 2014, Alaska set a record with over 40,000 shakes. Over the past five years, the Alaska Earthquake Center has reported over 150,000 earthquakes. Of those, 31 had a magnitude over 6.0. and four went over 7.0. Seventy-five percent of all earthquakes over 5.0 within the United States happen in Alaska.
The 7.9 magnitude quake, that hit us in 2002 when the Denali Fault ruptured, is the largest I have experience. The 1964 Good Friday Earthquake was a magnitude 9.2, and it is still the second largest earthquake ever recorded anywhere on the globe.
Graph and stats credit: Alaska Earthquake Center