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. Czech Hunter

    Another Tsunami?
    Oh god... I'm so worried!

    April 6, 2010 at 6:54 pm | Report abuse |
  2. Cindi

    All these earthquakes around the world are scaring the heck out of me. I wonder when a big one like this will hit the US, and if so, will it devastate us like it did Haiti.

    April 6, 2010 at 6:54 pm | Report abuse |
  3. PoorOldEdgarDerby

    Logic would dictate God is mad at us for not being good sports and dying penniless from our pre-existing conditions.

    April 6, 2010 at 6:54 pm | Report abuse |
  4. Rex

    ahh...my country again... can't say anything

    April 6, 2010 at 6:55 pm | Report abuse |
  5. Mori

    Ever wonder what shape the earth is if you take away all the water?

    April 6, 2010 at 6:55 pm | Report abuse |
  6. rimom

    What on earth is going on. It seems like every other day there is an earthquake and they seem to be getting bigger and stronger.

    April 6, 2010 at 6:55 pm | Report abuse |
  7. scopesmonkey

    The world has always been shaking, rattling, & rolling. It just seems so much more frequent now that we hear about every single one of them.

    April 6, 2010 at 6:55 pm | Report abuse |
  8. penang

    waken up by whole apartment building shaking at 6:20am. Last abt 3-4mins.

    April 6, 2010 at 6:55 pm | Report abuse |
  9. mike

    Count down to 12/2012.... I hope no tsunami/major death toll

    April 6, 2010 at 6:55 pm | Report abuse |
  10. Jace

    Wonder why all of these earthquakes seem to be happening so frequently recently.

    April 6, 2010 at 6:56 pm | Report abuse |
  11. Jerry

    Wow Another Quake, I am not sure if its any conincidence or just the availability of new resources but it seems like larger quakes are becomming more frequently

    April 6, 2010 at 6:56 pm | Report abuse |
  12. Mike

    Does anyone else feel like we have been hit with an unusually high amount of severe quakes recently? Does this reflect anything for the future?

    April 6, 2010 at 6:56 pm | Report abuse |
  13. Tony

    The world seems to be shifting all in a matter of a short period of time.

    April 6, 2010 at 6:56 pm | Report abuse |
  14. Levi

    What the heck is going on with all these powerful earthquakes? They've been striking the poor countries hard lately,

    April 6, 2010 at 6:56 pm | Report abuse |
  15. teoh kong haur

    i'm staying in penang, malaysia... the whole condominium was shaking

    April 6, 2010 at 6:57 pm | Report abuse |
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