Philippine Earthquake Update July 24, 2021: Magnitude 6.6 hits Calatagan, Batangas

Manila, Philippines – The Philippine Institute of Volcanology and Seismology (Phivolcs) announced a magnitude 6.6 earthquake struck 16 kilometers southwest of Calatagan, Batangas on July, 24, 2021 (Saturday) morning.

The Philvocs said that the epicenter of the earthquake hit at around 4:49 a.m. had a depth of 116 kilometers and it was caused by a tectonic in origin.

The Philvocs was first reported as a magnitude 6.7 earthquake, however, this was later revised to magnitude 6.6.

Due to the depth of the earthquake, Phivolcs Director Renato Solidum Jr. explained that the earthquake was due to the movement of the Manila Trench. He also said that no possible threat of a tsunami or tidal wave.

To quote:

“Ang lindol kaninang 4:48 ng madaling araw ay sanhi ng pagkilos ng Manila Trench.… Walang kinalaman ito sa Taal Volcano,” said Solidum, who was asked if the quake was related to the Taal Volcano unrest.

Aftershock was occurred at around 4:57 a.m. that struck in the same areas of Batangas with a magnitude of 5.1 and a depth of 107 kilometers.

The tremor was felt in Metro Manila, other areas of Luzon, and the Visayas.

Earthquake Intensities

The following earthquake intensities were recorded:

  • Intensity V:
    • Calapan City & Puerto Galera, Oriental Mindoro
    • Sablayan and Magsaysay, Occidental Mindoro
    • Tagaytay City, Carmona
    • Dasmariñas City, Cavite
  • Intensity IV:  
    • Quezon City
    • Marikina City, City of Manila
    • Makati City
    • Taguig City
    • Valenzuela City
    • Pasay City
    • Tagaytay City, Cavite
    • Batangas City & Talisay City, Batangas
    • San Mateo, Rizal
  • Intensity III: 
    • Pasig City
    • San Jose del Monte City, Bulacan

Instrumental intensities:

  • Intensity V
    • Calapan City and Puerto Galera, Oriental Mindoro
  • Intensity IV
    • Batangas City, Batangas
    • Carmona, Cavite
    • Calumpit and Plaridel, Bulacan
  • Intensity III
    • Quezon City
    • Marikina City
    • Pasig City
    • Las Piñas City
    • Muntinlupa City
    • Malabon City
    • Navotas City
    • San Ildefonso, Pandi, Malolos, San Rafael, and Marilao Bulacan
  • Intensity II
    • San Juan City
    • Dagupan City
    • Polillo, Quezon
  • Intensity I
    • Guinayangan, Quezon
    • Magalang, Pampanga
    • Iriga and Sipocot, Camarines Sur
    • Daet, Camarines Norte
    • Palayan City
    • Nueva Ecija
    • Iloilo City
    • Kalibo, Aklan
    • San Jose City, Antique
    • Bago City
    • Negros Occidental

Contact Philvocs

Should you have concerns related to earthquakes, you may also reach the Philvocs at the following contact details:

Facebook: @PHIVOLCS 
Twitter: @phivolcs_dost
Trunkline: +632 8426-1468 up to 79 

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