7.8M Alaska Earthquake felt in Oklahoma on Wednesday morning

VIDEO: 7.8M Alaska Earthquake felt in Oklahoma on Wednesday morning

Quick Facts:

  • Last Tuesday night, a magnitude 7.8 earthquake occurred roughly 500 miles to the SW of Anchorage, Alaska
  • A few minutes after the earthquake started, it registered in southwest Oklahoma
  • The seismogram was quite active for several hours

Around 10:12 PM in Alaska, a strong earthquake was registered about 65 miles to the south of Perryville, Alaska. In the four and a half hours following that earthquake, more than twenty aftershocks were registered including a 6.1M, a 5.8M and a 5.7M.

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VIDEO: Alaska earthquakes registers in Oklahoma

Seismographs in Oklahoma picked up the movement within five minutes of the earthquake being registered in Alaska.

This seismogram is from the Wichita Mountains in southwest Oklahoma.

7.8M Earthquake in Alaska registered in Oklahoma
7.8M Earthquake in Alaska registered in Oklahoma

Nearly 3,150 miles away from the epicenter, the movement started registering just 9 minutes after shaking started in Alaska.

According to the United States Geological Survey (USGS), this earthquake happened due to a thrust fault between the Pacific and North American plates.

Earthquakes are common in this area and it isn’t unusual to see large earthquakes in the Aleutian Island area.

Since 1900, there have been six other earthquakes with at least a 7 magnitude in this area. The largest of them was a 8.2 magnitude in November of 1938 (which occurred in almost the same place as last night’s). This area also holds the record for the second-largest earthquake in modern times with a 9.2 magnitude back in March of 1964.

This isn’t the only time Oklahoma has seen shaking from earthquakes on the west coast. In 2018, a magnitude 7.9 earthquake was registered across Oklahoma for quite some time. Also earlier this year, a 6.5M earthquake from Nevada was felt in Oklahoma.