6.4 magnitude earthquake rattles Philippines province of Negros

July 11, 2011MANILA – A strong earthquake struck off the Philippine province of Negros Occidental on early Tuesday morning, seismologists said, but no tsunami warnings were issued. The 6.4 -magnitude earthquake at 4.47 a.m. local time (2047 GMT Monday) was centered about 73 kilometers (45 miles) south-southwest of Kabankalan, a city in Negros Occidental. It struck about 19 km (11.8 miles) deep, making it a relatively shallow earthquake, according to the Pacific Tsunami Warning Center. –Wire Update
 BACOLOD CITY, Philippines— The Philippine Institute of Volcanology and Seismology (Phivolcs) has been closely monitoring the Negros trench following five earthquakes, the strongest one at a 5.2-magnitude, that hit Negros Occidental. Ishmael Narag, Phivolcs Seismology Division officer-in-charge, said Monday afternoon that the 24-hour watch started when the last tremor hit at 10:10 a.m. The epicenter of the earthquakes was offshore and believed to have been caused by sudden movements along the earthquake-generating Negros Trench, Narag said. “We believe a subduction occurred where heavier denser plates dove into the interior of the earth, triggering five earthquakes recorded in Cauayan town and Bago City in Negros Occidental,” Narag said. A subduction occurs when two oceanic plates collide, with the younger plate riding over the older one. Narag explained that as a precaution, they were monitoring the Negros Trench although the magnitude of the tremors that occurred later Monday had gone down. “These are small magnitude events that did not lead to any damage. But we are not discounting the possibility of having stronger earthquakes,” Phivolcs Director Renato Solidum also said. The first quake was recorded at 12:24 a.m., with a magnitude of 3.6 in Bago City, followed by four others that hit Cauayan at 5.2-magnitude at 12:43 a.m., 4.8-magnitude at 1:40 a.m., 2.8-magnitude at 5:40 a.m. and 3.5-magnitude at 10:10 a.m., Phivolcs reported. Cauayan Mayor John Rey Tabujara said they felt the earthquakes shake their town one after the other but these did not cause any damage nor was anybody harmed.  –Inquirer News
contribution by Luisport
This entry was posted in Earth Changes, Earth Watch, Seismic tremors. Bookmark the permalink.

11 Responses to 6.4 magnitude earthquake rattles Philippines province of Negros

  1. David Lynn says:

    Any volcanoes in this area?

    Like

  2. Gen says:

    Have a look at this map. We are nearly totally surrounded by quakes of one sort or another.

    http://www.ga.gov.au/earthquakes/

    Like

  3. Gen says:

    Another 2.6 signficant near Broken Hill.

    That makes 2 near Broken Hill, NSW; 1 Kalgoorlie Western Australia; 1 Tasmania;
    at least 3 Korumburra, Victoria in the last week.

    Only small ones but ALL SIGNIFICANT so I guess they were shallow.

    Plus a significant near Mudgee NSW in June.

    Plus some insignificant ones.

    Keep an eye on the above link.

    7.2 in Alaska, 7.6 and multiples in Kermadec, 7.1 Japan, 6.4 and multiples in Negros Philippines.

    But remember this is just normal, lol.

    Like

  4. Anthony says:

    There are definitely certain points in faults that receive all the stress. Watch the CA quakes right now and you can see the exact pressure points where the earthquake swarms are focusing.

    Like

  5. 6.5 earthquake rattles negros !

    Like

  6. Too many earthquakes today in Negros (Philippines):

    http://www.world-earthquakes.com

    This is scary 😦

    Like

  7. Gen says:

    I just found this link. There are 4 volcanoes on Negros Island.

    http://www.volcano.si.edu/world/

    http://en.wikipedia.org/wiki/Negros_Occidental

    Like

  8. honey tuanparis says:

    so alarming…:((
    we have to be prepare & most important thing is we have to PRAY!

    Like

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