Earthquake overview : Only a few days after the massive M7.6 earthquake off the coast of the Philippine Islands, another very shallow earthquake occurred in Central Mindanao.
Tell us when you think you have felt this earthquake, especially if you live in MalayBalay, Valencia or one of the other towns near the epicenter.
Philippines-only earthquake list
Keep this page open to read more details when they become available
Most recent information on top – Start of the article at the bottom
Very Important update September 4 – 21:17 UTC
Unfortunately our predicted “dangerous” scenario became true as we based ourselves on previous damaging earthquakes in the same area at lower Magnitudes.
The Philippines Information Agency wrote on September 4 :
The quake caused landslips in five barangays namely, Mt. Nebo, Lilingayon, Guinoyuran, Lourdes and Tugaya, all in Valencia City.
Alejandro Larosa, executive director of Valencia City Disaster Risk Reduction and Management Council (CDRRMC) reported that based on the rapid damage assessment and needs analysis conducted before 12 noon of September 4, the quake left one person injured and a total of 143 houses destroyed.
The CDRRMC of Valencia, through the City Social Welfare and Development Office, are now distributing relief goods to affected families.
Labininay explained that though the quake is centered in Maramag, the neighboring city of Valencia was worst hit due to its soft and humid soil texture having vast ricefields and fishponds.
ER repeats that this earthquake has NO relation with the M7.6 earthquake from a couple of days ago. Those looking for a relation with the present earthquake have to read an article we have written about a damaging earthquake in the same area a couple of months ago.
Update a couple of hours later : As assessment goes on, the number of damaged homes is running into the hundreds.
Update 23:07 UTC :
Philstar writes : The quake was felt strongest in Musuan and Maramag towns at Intensity 5. It was felt at Intensity 4 in Valencia City in Bukidnon and Arakan in North Cotabato; Intensity 3 in Malaybalay City in Bukidnon, Cagayan de Oro City in Miramis Oriental and Kidapawan City; and Intensity 2 in Butuan and Cotabato cities.
Phivolcs reported that the quake was followed by another tremor, measuring magnitude 4.9 in the Richter scale, at 3:52 a.m. The epicenter was also traced on land, estimated at 15 kilometers northwest of Maramag town with a depth of three kilometers. The second quake was felt at Intensity 5 in Musuan and Maramag towns; Intensity 4 in Valencia City and Arakan, North Cotabato; Intensity 3 in Malaybalay City, Cagayan de Oro City and Kidapawan City; and Intensity 2 in Butuan and Cotabato cities.
The Phivolcs intensity scale is slightly different than the MMI scale. Philvolcs V means a strong shaking. The scale varies from 1 to X instead of 1 to XII for MMI, which means that Phivolcs V can be seen as VI MMI.
Update 21:35 UTC :
The expected shaking as calculated by USGS would be MMI VII (very strong shaking) for Mailag, Valencia and San Carlos, all together 91000 inhabitants. Valencia is a middle sized town counting a population of 83000 people.
Update 21:08 UTC :
Based on some I Have Felt It reports, people are seeing tonights shaking as aftershocks from the powerfull M7.6 earthquake from last week. We, at ER, cannot find any link to the mainshock and aftershocks from that massive earthquake.
Update 21:01 UTC :
The final outcome of this earthquake will depend upon the exact location of the epicenter. If close to Valencia (epicenter USGS), we are worried that damage may have been inflicted. Except for shaking damage, this area in the Phillipines is also vulnerable for landslides which can be even more dangerous than pure earthquake shaking.
Update 20:43 UTC :
This earthquake has NO direct relation to the M 7.6 with epicenter in the Philippine Island area. NO fear at all for a tsunami (Filipinos are very scared for eventual tsunamis). People not living near the dangerous subduction areas should understand that feeling an earthquake does not give a clue where the earthquake happened. It may have been a very powerful one far away which could trigger a tsunami. Better to be cautionous all the time and look in the internet to sites like USGS and ER and the local seismological agency for details.
Update 20:32 UTC :
PHIVOLCS, the Philippine seismological service reports as Magnitude of M5.8 at a depth of only 3 km. Philvolcs although does not expect any damage or injuries from this earthquake. The max. MMI Phivolcs is reporting is IV. This f-does however not change our opinion. We maintain our Orange unsure outcome. Phivolcs located the epicenter more to the west than USGS away from Valencia. It will take until the morning how Valencia and the immediate surrounding cities will wake up.
A shallow depth earthquake occurred in the middle of the Philippines night. Earthquake-Report.com calls this earthquake moderately dangerous if the preliminary parameters (Magnitude and depth) are confirmed. The epicenter was located at 3km (2mi) SW of Mailag, 5km (3mi) NNE of Valencia, Philippines and 14km (9mi) NE of Dologon, Philippines. We remeber an earthquake from last year near Valencia who has generated a lot of damage. In other words, we do not trust the good outcome of this earthquake as it is probably the same fault generating this earthquake.
Most important Earthquake Data:
Magnitude : Mw5.6 (USGS) and Mw5.8 (Phivolcs)
UTC Time : 2012-09-03 19:44:22 UTC
Local time at epicenter :
Depth (Hypocenter) : 9.8 km (USGS) and 3 km (Phivolcs)
3km (2mi) SW of Mailag, Philippines
5km (3mi) NNE of Valencia, Philippines
14km (9mi) NE of Dologon, Philippines
21km (13mi) S of Casisang, Philippines
40 km from Malaybalay (Phivolcs)
863km (536mi) SSE of Manila, Philippines
|EMSC||Philippine Islands Region||Sep 03 22:18 PM||4.8||30||MAP I Felt It|
|GEOFON||Philippine Islands Region||Sep 03 22:18 PM||4.7||52||MAP I Felt It|
|USGS||Philippine Islands Region||Sep 03 22:18 PM||4.8||35||MAP I Felt It|
|EMSC||Mindanao, Philippines||Sep 03 19:52 PM||4.8||44||MAP I Felt It|
|GEOFON||Mindanao, Philippines||Sep 03 19:52 PM||4.8||37||MAP I Felt It|
|EMSC||Mindanao, Philippines||Sep 03 19:44 PM||5.6||10||MAP I Felt It|
|GEOFON||Mindanao, Philippines||Sep 03 19:44 PM||5.4||39||MAP I Felt It|
|PHIVOLCS||Mindanao, Philippines||Sep 03 19:44 PM||5.8||3||MAP I Felt It|
|USGS||Mindanao, Philippines||Sep 03 19:44 PM||5.6||9||MAP I Felt It|
|GEOFON||Philippine Islands Region||Sep 03 16:01 PM||4.7||36||MAP I Felt It|
|GEOFON||Philippine Islands Region||Sep 03 10:02 AM||4.8||46||MAP I Felt It|
|GEOFON||Philippine Islands Region||Sep 03 09:21 AM||4.7||38||MAP I Felt It|
|USGS||Philippine Islands Region||Sep 03 09:21 AM||4.7||34||MAP I Felt It|
|EMSC||Philippine Islands Region||Sep 03 09:21 AM||4.8||10||MAP I Felt It|
|GEOFON||Mindanao, Philippines||Sep 03 08:49 AM||4.8||28||MAP I Felt It|
|EMSC||Moro Gulf, Mindanao, Philippines||Sep 03 08:49 AM||5.0||10||MAP I Felt It|
|USGS||Moro Gulf, Mindanao, Philippines||Sep 03 08:49 AM||4.9||11||MAP I Felt It|
|EMSC||Moro Gulf, Mindanao, Philippines||Sep 03 06:49 AM||5.8||40||MAP I Felt It|
|GEOFON||Mindanao, Philippines||Sep 03 06:49 AM||5.7||39||MAP I Felt It|
|USGS||Moro Gulf, Mindanao, Philippines||Sep 03 06:49 AM||5.8||8||MAP I Felt It|
|USGS||Philippine Islands Region||Sep 03 04:20 AM||4.5||35||MAP I Felt It|
|EMSC||Philippine Islands Region||Sep 03 04:20 AM||4.6||10||MAP I Felt It|
|GEOFON||Philippine Islands Region||Sep 03 03:11 AM||5.0||56||MAP I Felt It|
|EMSC||Philippine Islands Region||Sep 03 03:11 AM||5.0||40||MAP I Felt It|
|USGS||Philippine Islands Region||Sep 03 03:11 AM||4.9||35||MAP I Felt It|
|GEOFON||Philippine Islands Region||Sep 03 02:14 AM||5.1||44||MAP I Felt It|
|EMSC||Philippine Islands Region||Sep 03 02:14 AM||5.1||52||MAP I Felt It|
|USGS||Philippine Islands Region||Sep 03 02:14 AM||5.0||35||MAP I Felt It|
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