DIGOS CITY, Philippines—Another quake struck here around 8:50 p.m. Tuesday, about nine hours after a magnitude 3.4 earthquake shook the city.
The Philippine Institute of Volcanology and Seismology in Southern Mindanao said in its website that the second tremor measured at magnitude 2.3 occurred eight kilometers south of the city and had a depth of 14 kilometers.
The closeness of the epicenter here explained why the quake was felt strongly even though it measured weak on the Richter scale, government sources said.
Phivolcs said it was not expecting damage or aftershocks after the second quake.
At 11:57 a.m. Tuesday, a magnitude 3.4 earthquake jolted the city.
Phivolcs announced on its website that the quake struck 17 kilometers southeast of here and was also shallow at a depth of 17 kilometers and not 83 kilometers as it earlier reported.
No damage to property was reported in the first tremor that was felt here at Intensity III. Intensity III means many people would feel the tremor inside their homes or buildings.
Janila de ocampo of Philvocs in Southern Mindanao said “minor damage starts at magnitude 6.”
“Magnitude 5 may also cause very minor damage. That means for (magnitude) 3 and below we don’t expect any damage,” De Oampo said.
Even then, Mayor Joseph Peñas said all rescue units have been alerted, especially those along coast.
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