April 6th, 2010
09:28 PM ET

7.7-magnitude quake strikes Indonesia

[Updated at 9:50 p.m.] Read the full CNN.com story

[Updated at 9:18 p.m.] The tsunami watches have been canceled for "all areas of the Indian Ocean," according to the Pacific Tsunami Warning Center.

[Updated at 9:12 p.m.] Residents in Banda Aceh said they were without power.

Residents in coastal towns fled inland to higher ground just after the quake, according to a local radio station.

The tsunamis, in Banyak Island and Teluk Dalam, were small and not dangerous, measuring just under a foot high, said Fauzi, chief of the Indonesian Meteorological and Geophysics Agency. Fauzi goes by only one name, which is common in Indonesia.

[Updated at 8:20 p.m.] The quake triggered two tsunamis, according to the Indonesian Meteorological and Geophysics Agency.

There were no immediate reports of damage or injuries. The initial shaking, which reportedly lasted for at least three minutes, prompted scores of people to run out of buildings into open air, witnesses said.

"The quake was felt quite strong, maybe about three four minutes," said Dadik, the head of Simeulue police who goes by only one name. "I've ordered my staff to check if there's any damage or casualties, but apparently no damage reported so far."

Measurements of sea levels indicated that tsunami waves "may have been  destructive along coasts near the earthquake epicenter," the Pacific Tsunami  Warning Center said.

One registered tsunami measured close to a foot from peak to trough and  was considered a small tsunami, said geophysicist Gerard Fryer with the Pacific  Tsunami Warning Center.

Indonesia announced the tsunami warning quickly, Fryer said, and  officials at Indonesia's Meteorological and Geophysics Agency lifted it about  two hours later.

[Updated at 7:50 p.m.] The depth at which the earthquake struck has also been changed. The USGS has revised the depth to 19.3 miles. It was previously reported to be 28.6 miles.

[Updated at 7:42 p.m.] A 9.1-magnitude underwater earthquake struck off the coast of Sumatra in 2004, triggering a tsunami that killed more than 200,000 people in 14 countries.

The tsunami, which washed away entire communities, caused nearly $10 billion in damage and more casualties than any other tsunami in history, according to the United Nations. Indonesia was among the hardest hit nations.

Did you feel the quake? Share you story through iReport.

[Updated at 7:38 p.m.] The USGS has downgraded the earthquake to magnitude 7.7. The temblor struck 125 miles from Sibolga, situated on Indonesia's Sumatra island.

[Updated at 7:29 p.m.] CNN meteorologist Chad Meyers talks to CNN's Wolf Blitzer about the number of earthquakes that have occurred recently.

[Updated at 7:16 p.m.] CNN's Lisa Sylvester has some of the early details about the quake.

[Updated at 7:07 p.m.] Scientists are monitoring data from ocean buoys to determine whether the earthquake already generated a tsunami, said geophysicist Gerard Fryer of the Pacific Tsunami Warning Center.

If a tsunami does erupt from the quake in shallow waters, Fryer said, it would be very small and not move much water.

Scientists said they do not expect the tsunami to affect the west coast of North America.

[Updated at 6:47 p.m.] The temblor struck 145 miles off the coast of northern Sumatra, Indonesia, at a depth of 28.6 miles, the U.S. Geological Survey reported.

A "destructive widespread tsunami" is not expected, the Pacific Tsunami Warning Center said, but a local tsunami could affect coastal areas near the quake's epicenter.

[Updated at 6:41 p.m.] A local tsunami watch has been issued for Indonesia and surrounding areas.

[Posted at 6:35 p.m.] A 7.8-magnitude earthquake struck northern Sumatra, Indonesia, early Wednesday according to the U. S. Geological Survey.

- CNN's Augie Martin and Andy Saputra contributed to this report.

soundoff (223 Responses)
  1. kirk

    tsunami warning?????

    April 6, 2010 at 6:42 pm | Report abuse |
  2. Dutchman

    The whole world is shakin', rattlin' and rollin' !

    April 6, 2010 at 6:43 pm | Report abuse |
  3. Deanne

    It seems to me that we are having more large earthquakes these days than we used to. Is this true? If so, what could be causing it?

    April 6, 2010 at 6:45 pm | Report abuse |
  4. Mary

    It's going to take a while for all the plates in the "ring of fire" to settle down.. there will be more quakes in the months to come.

    April 6, 2010 at 6:47 pm | Report abuse |
  5. Laurence

    Earthquakes happen, that's how the Earth was formed, that's why mountains exist. It's supposed to happen. Hopefully nobody was killed.

    April 6, 2010 at 6:48 pm | Report abuse |
  6. Gillian

    Let's hope nothing comes of it, these people have suffered so much already.

    April 6, 2010 at 6:48 pm | Report abuse |
  7. Jim McNamara

    wow. this is not good. all over the world

    April 6, 2010 at 6:48 pm | Report abuse |
  8. j-dub

    hmmm, I wonder where the next one will hit?

    April 6, 2010 at 6:48 pm | Report abuse |
  9. JD

    we felt the tremors here in KL!

    April 6, 2010 at 6:48 pm | Report abuse |
  10. Ashley

    The Earth is HIGHLY un-settled lately....what gives?

    April 6, 2010 at 6:49 pm | Report abuse |
  11. Eric

    Hopefully there isn't much damage, and no loss of life.

    My thoughts go out to those in Sumatria.

    April 6, 2010 at 6:49 pm | Report abuse |
  12. Peter

    What is all this leading up to? Is there a pattern of destruction that they are not telling us about?

    April 6, 2010 at 6:49 pm | Report abuse |
  13. Zago1

    Let's hope it's not as devastating as the one in 2004 as well as the one that just struck Haiti. Nature is obviously at war with us.

    April 6, 2010 at 6:50 pm | Report abuse |
  14. tellicherry

    too many earthquakes, even in non earthquake areas like northern illinois. no conclusions, just makes you wonder

    April 6, 2010 at 6:50 pm | Report abuse |
  15. Roy Alugbue

    Wow... what's the world coming to?!

    April 6, 2010 at 6:50 pm | Report abuse |
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