In a bulletin issued by the Philippine Institute of Volcanology and Seismology (Phivolcs), it said four quakes were recorded in Cauayan and Bago City, Negros Occidental.
The first quake was recorded at 12:24 am, with a magnitude of 3.6 in Bago City; followed by a 5.2-magnitude at 12:43 am in Cauayan; a 4.8-magnitude quake at 1:40 am still in Cauayan; another at 5:40 am with a 2.8-magnitude.
The most recent quake was recorded West of Cauayan 10:10 am, with a magnitude of 3.5.
“These are small magnitude events that did not lead to any damage,” said Phivolcs Director Renato Solidum.
Solidum said it is not unusual to record several earthquakes in an area in a day.
“This is a swarm of small earthquakes, but we are not discounting the possibility of having stronger earthquakes,” Solidum added, noting that the quakes are not connected to the recent shakes in Japan.
Solidum also advised the public to stay alert for possible aftershocks.
“They should always be prepared,” he said.