Aftershocks continue to shake Bohol, though slightly this time, counting at least 11 occurrences already so far this month- -all of tectonic origin.
TheÂ Philippine Institute of Volcanology and Seismology (Phivolcs) recorded the latest on January 24, at 1:45 p.m., tracing its location 20 kilometers north of west of San Miguel town.
It was magnitude 1.9 and had depth of 33 kilometers.
Preceding it was on January 20, at 6:03 p.m., traced to one kilometer south of west of Antequera, at magnitude 2.1 with depth of 32 kilometers.
Another magnitude 2.1 aftershock was recorded at 5:05 a.m. on January 17 at three kilometers north of west of Pilar with depth of 31 kilometers.
The aftershock at 8:53 p.m. on January 15 was also magnitude 2.1 with depth of 20 kilometers, traced at nine kilometers north of east of Danao.
Phivolcs corrected its entry on January 14 for the aftershock felt at 2:35 p.m. which was previously placed to be atÂ four kilometers south from the east of Cortes town.
In the corrected entry, it was located six kilometers north of west of Balilihan and was at magnitude 3.7- -not magnitude 4.3; and had a depth of two kilometers- -not 19 kilometers.
A preceding aftershock was recorded at 4:32 a.m. on January 13, a magnitude 2.2 ground shaking with epicenter traced to five kilometers north of east of Catigbian and had a depth of 21 kilometers.
Phivolcs monitored an earlier aftershock at 8:07 a.m. on January 9, a magnitude 2 quake with depth of 31 kilometers and its epicenter traced to seven kilometers south of east of Buenavista.
The first aftershock in 2017 was recorded at 7:21 p.m. on January 2 at magnitude 2.1 and with depth of 21 kilometers.
Its epicenter was traced 20 kilometers south of east of San Miguel.
Another one followed, a magnitude 2 quake, at around 11:21 a.m. on January 3.
It had a depth of 33 kilometers and which epicenter was traced five kilometers north of east of Catigbian.
Another milder aftershock at magnitude 1.8 was recorded at around 11:39 p.m. on the same day.
Phivolcs traced its epicenter to 26 kilometers north of east of Mabini and its depth of 32 kilometers.
A magnitude 2.6 aftershock followed at 1:03 p.m. on January 4 which had a depth of 24 kilometers and its epicenter traced to five kilometers south of west of Alicia.
Phivolcs considered all these ground shaking as still aftershocks from the magnitude 7.2 earthquake that hit Bohol on October 15, 2013 since their positions were â€œwithin the rupture zone of the 2013 earthquakeâ€ and of lesser magnitude than the main earthquake.