Earthquake of 5.3 magnitude strikes General Santos City

Residents in some areas of the Philippines rather had a shaky morning as two 5+ magnitude quakes jolted different provinces in the country.

As previously reported here on Noypistuff, Occidental Mindoro was hit by a 5.7-magnitude temblor at 12:42 am today, May 23. Just over 2 hours after, another quake struck General Santos City, Mindanao which registered at magnitude 5.3 on the Richter scale.

According to the Philippine Institute of Volcanology and Seismology (Phivolcs), the epicenter of the newest quake was recorded off 75 kilometers (km) Southeast of General Santos City. The tectonic quake has a depth of 139 km.

There have been no immediate reports of damage from the earthquake. The Institute also does not expect tsunami nor aftershocks from the General Santos quake.

Earthquake and 8 aftershocks jolt Isabela, Philippines

Earthquake in the Philippines on May 21, 2011 Update

An earthquake of 5.5 magnitude struck the northern Philippine province of Isabela at 9:08 p.m. on May 21st which was followed by 8 more earthquakes or aftershocks within 12 hours after the first quake. This is according to the Philippine Institute Volcanology and Seismology's (Phivolcs) earthquake bulletin.

The map shows the epicenter (red dot) of the quakes | Source: Phivolcs

The initial quake was felt at the following intensities in the following areas:

Intensity V - Ilagan, Isabela
Intensity IV- Tuguegarao City, Cagayan; Penablanca, Cagayan; Quirino Province; Tumawini, Isabela; Baler, Aurora
Intensity II - Baguio City; Tabuk, Kalinga

All the temblors were of tectonic origin with Ilagan, Isabela as a common epicenter.

Here are the time and magnitude of each aftershock:

21 May 2011 - 10:12 PM, Magnitude 3.4
21 May 2011 - 10:20 PM, Magnitude 2.4
22 May 2011 - 12:19 AM, Magnitude 2.1
22 May 2011 - 12:52 AM, Magnitude 2.3
22 May 2011 - 01:44 AM, Magnitude 3.3
22 May 2011 - 02:19 AM, Magnitude 2.3
22 May 2011 - 03:48 AM, Magnitude 2.6
22 May 2011 - 09:25 AM, Magnitude 2.4

Six more quakes jolted other Philippine provinces on May 21st.

There have been no reports of damage from the quakes as of present time.

Multiple earthquakes in one day is not unusual in the Philippines since it lies on the Pacific Ring of Fire where volcanic and seismic activities are more frequent.

M5.8 earthquake jolts GenSan on May 10, 2011

According to the US Geological Survey, Philippines' southern island Mindanao was struck by a 5.8-magnitude earthquake.

The tremor which was 35 kilometers in depth was felt at 3:13 am on May 10. Its epicenter was recorded off 160 kilometers (100 miles) east-southeast of General Santos City.

There has been no immediate reports on any damage from the quake.

The Philippines lies in the Pacific Ring of Fire where quakes and volcanic eruptions often occur.

Magnitude 4.6 earthquake rocks Davao Oriental, Philippines on May 1, 2011 (Araw ng Paggawa)

At exactly 7:07 in the evening, Mati, Davao Oriental was jolted by a 4.6-magnitude quake on Labor Day or Araw ng Paggawa, May 1, 2011. This is according to the latest earthquake bulletin released by the Philippine Institute of Volcanology and Seismology (Phivolcs).

The quake which was of tectonic origin has a depth of 2 Kilometers (Km). Its epicenter was located at 86 Km Southeast of Mati, Davao Oriental.

The Institute is not expecting any damage nor any aftershock from the temblor.

Did you feel it?