A 6.3-magnitude earthquake struck Batangas on Friday, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported.
Three hours later, a 5.3-magnitude earthquake struck Davao Occidental.
The first Christmas Day quake, which occurred at 7:43 a.m., was tectonic in origin and was traced 10 kilometers northwest of Calatagan, Batangas.
The quake had a depth of 102 km, with the following registered intensities: Intensity IV - Lemery, and Malvar, Batangas; San Pedro, Laguna; City of Manila; Marikina City; Quezon City; Cainta and Antipolo City, Rizal; Pasig City; Intensity III - Caloocan City; Tanay, Rizal; San Jose Del Monte City, and Plaridel, Bulacan; Gapan City, Nueva Ecija; Cabangan and Iba, Zambales; Samal, Bataan; Valenzuela City; Malabon City; Intensity II - San Isidro, Nueva Ecija; Alaminos City, Pangasinan.
PHIVOLCS said the quake was also felt under the following instrumental intensities: Intensity IV - Bacoor City; Tagaytay City; Carmona, Cavite; Plaridel, Calumpit, San Ildefonso, San Rafael, and Malolos, Bulacan; Guagua, Pampanga; Puerto Galera, Oriental Mindoro; Las Pinas City; Intensity III - Talisay, Batangas; San Jose, Occidental Mindoro; Dagupan City; Quezon City; Pasig City; Muntinlupa City; Marikina City; Cabanatuan City; Intensity II - Roxas, Oriental Mindoro; Lucban, Quezon; Baler, Aurora; Palayan City; Intensity I - San Jose, Nueva Ecija; Gumaca, Lopez and Lucena City, Quezon. PHIVOLCS said aftershocks are expected from the tremor.
No damage has been reported in the CALABARZON area or in other places where the quake was felt.
Read more: Phivolcs says no threat of tsunami following Calatagan quake
Several motorists cruising along Timog Avenue felt the quake which was estimated to have lasted about 10 seconds.
Bystander Allan Steve Portero who was drinking his coffee at a roadside stand along Timog Avenue saw the cable wires of the electric posts shaking.
In Caloocan City, several residents went out of their homes during the tremor and saw leaves fall off trees.
Meanwhile, PHIVOLCS said the 5.3-magnitude earthquake that struck Davao Occidental at 10 a.m., was also tectonic in origin, and was traced 95 kilometers southeast of Sarangani, Davao Occidental with a depth of 111 kilometers.
It was felt at Intensity II in Alabel, Sarangani and Intensity I in Kiamba, Sarangani; Koronadal City, and General Santos City. (with a report from Hanah Tabios)