Powerful 7.3 magnitude quake strikes off coast of Indonesia

On January 10, 2012, a powerful 7.3 magnitude earthquake struck off the coast of northern Sumatra, Indonesia, prompting officials to issue a brief tsunami warning.

The United States Geological Survey (USGS) is reporting that the earthquake occurred at 18:37:01 UTC (or 12:37:01 a.m. on January 11, 2012 at the epicenter), and struck at a depth of 29.1 kilometers (18.1 miles).

NOAA’s Pacific Tsunami Warning Center is reporting that a destructive widespread tsunami threat does not exist based on historical earthquake and tsunami data. There was some concern for moderate tsunami impacts on coastal areas located near the epicenter, which prompted Indonesian officials to issue a brief tsunami warning. The localized threat has now passed and the tsunami warning was lifted approximately three hours after the earthquake.

There have been no immediate reports of injuries or building damage according to recent news reports.

On December 26, 2004, Indonesia experienced one of the deadliest tsunamis in history after a 9.1 magnitude earthquake struck off the west coast of Sumatra.

According to the USGS Earthquake Hazards Program, earthquakes greater than 8.0 in magnitude are rare and occur at a frequency of about one per year. However, earthquakes ranging from 7.0 to 7.9 in magnitude are more common and occur at a frequency of about 15 per year.

USGS has a useful web page titled “Did you feel it?” where you can share information on your experience of an earthquake. So far 34 people have reported feeling weak to light shaking during the January 10, 2012, earthquake off the coast of Sumatra, Indonesia.

Shake map of January 10, 2012 earthquake in Indonesia. Image Credit: USGS.

Powerful 6.8 magnitude earthquake shakes Japan

Debris from 2011 Japan earthquake to reach Hawaii soon

Do you live near an earthquake hazard zone?

Discovery of new force driving Earth’s tectonic plates

Do atmospheric changes before Japan’s big quake indicate predictability?

National Research Council offers 18 tasks to prepare for next major U.S. earthquake

January 10, 2012

Like what you read?
Subscribe and receive daily news delivered to your inbox.

Your email address will only be used for EarthSky content. Privacy Policy
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

More from 

Deanna Conners

View All