Screenshot from PHIVOLCS website
DAVAO CITY 鈥� A swarm of minor quakes has hit parts of Surigao del Norte since Wednesday night until past 1 p.m. Thursday, April 25, the state seismology bureau said on Thursday.
The strongest of 29 tremors was a shallow magnitude 4, which occurred at 10:54 p.m. on Wednesday and its epicenter traced 60 kilometers southeast off General Luna town, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.
It had a depth of 6 kilometers.
It came after ten tremors and followed by over a dozen more within the same vicinity, the strongest of which registered at magnitude 3.4, according to Phivolcs.
Phivolcs also recorded a 4.2-magnitude earthquake in the town of Sarangani in Davao Occidental at 9:34 a.m. Thursday but it was not felt on the surface, or has no known intensity.
The earth movement, which was tectonic in origin, came after a 4.5 and 3.7 twin earthquakes were recorded in the same town at 11:28 a.m. and at 7:09 p.m. on Wednesday.