Alaska earthquake: A 7.0 magnitude earthquake just struck outside of Anchorage, Alaska. Declared a state of disaster.
By Brian Ries and Jessie Yeung, CNN. Updated 2 min ago. 2:53 PM ET, Fri November 30, 2018
Seismologist to Alaskans: Expect aftershocks for months, maybe years
Aftershocks are expected after this morning’s Alaska quake, according to Dr. Lucy Jones, a seismologist with the California Institute of Technology.
She says the average sequence of aftershocks for a quake this size is a 5.8, but that it could be larger than that average figure. She advises to expect many more aftershocks from today’s event.
”We think the number dies off with time, but the relative distribution from large to small is constant,” and weeks to months later, aftershocks will follow, she explains.
For example, the last 5-magnitude aftershock that followed the 1994 Northridge, California, quake was three years after the original event.
Dr. Elizabeth Cochran of the United States Geological Survey says the Anchorage quake was a “normal faulting event” among plates under Alaska.
Map shows where Alaskans felt the earthquake — and how strong it was
CNN meteorologist Allison Chinchar just walked viewers through a map that shows where Alaskans felt the shaking — yellow in the video below represents “strong” and orange “very strong” or “severe.”
A big concern for the area near the epicenter is what’s called liquefaction, a process where the soil becomes saturated with water, which can cause it to erupt into torrents and topple buildings and destroy roads.
Even in downtown Anchorage, a lot of the coastal regions are at significant risk for the potential for that liquefaction to take place, according to Chinchar.
Watch below: Latest updates on Alaska damage
Trump, in Buenos Aires, has been briefed on the Alaska earthquake
President Trump has been briefed on the Alaska earthquake and is monitoring damage reports, White House press secretary Sarah Sanders said on Twitter Friday afternoon.
“We are praying for the safety of all Alaskans!