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Good Friday Earthquake

The 50th anniversary of the Good Friday Earthquake is March 27th

Mayor's "The Great Alaskan Earthquake" proclamation

Earthquakes can strike suddenly without warning at any time of the day or night and at any time of the year.  Research shows that most injuries during an earthquake are a result of people being hit by falling objects and shattered glass, rather than from collapsed buildings.  Injuries can be avoided if people take following appropriate steps:

  • Drop, cover, and hold.  Move only as far as necessary to reach a safe place.  Most people injured in earthquakes move more than 5 feet during the shaking. 
  • If indoors, stay there until the shaking stops.  Many fatalities occur when people run outside, only to be killed by falling debris from collapsing walls.  It is safer to stay indoors until the shaking stops and it is safe to exit.  When going outdoors, move quickly away from the building to prevent injury from falling debris.
  • If outdoors, find a spot away from buildings, trees, streetlights and power lines, and overpasses.  Drop to the ground and stay there until the shaking stops.  Injuries can occur from falling trees, street lights and power lines, or building debris.
  • If in a vehicle, pull over at a clear location free of hazards and stop.  Stay in the vehicle with seatbelt fastened until the shaking stops.  Turn on the radio to get information regarding the quake and any damage to roadways that may have occurred.

Register today for the Great Alaska Shakeout to commemorate the 50th anniversary of the 1964 Great Alaska Earthquake at http://shakeout.org/alaska/

For more information on earthquake safety contact the Office of Emergency Management at 343-1400.

    • Mayor's Office
    • Mayor: Dan Sullivan
    • 632 W 6th Avenue, Suite 840, Anchorage, AK 99501
    • 907 343-7100

Alaska Earthquake Facts

How many earthquakes do we have in Alaska?

  • Daily = 50-100
  • Weekly = 400-700
  • Monthly = 1500-3000
  • Yearly = 24,000

How big are the earthquakes in Alaska?

  • Alaska boasts 3 of the 10 largest earthquakes ever recorded in the world, and 10 of the 15 largest earthquakes recorded in the U.S. None of these earthquakes was smaller than M7.9!

How big was the largest earthquake in Alaska?

  • The largest earthquake recorded in Alaska was a M9.2 that occurred on March 27, 1964 in the Prince William Sound. This was the 2nd largest earthquake ever recorded in world history.

On average, Alaska can expect:

  • 1 M > 8 every 13 years
  • 1 M = 7-8 every year
  • 5 M = 6-7 every year
  • 20 M = 5-6 every year
  • 90 M = 4-5 every year
  • 400 M = 3-4 every year
  • 2100 M = 2-3 every year

(source) Alaska Earthquake Information Center http://www.aeic.alaska.edu/html_docs/faq.html