A MAGNITUDE 5.8 earthquake night that shook waters off Calatagan in Batangas, sent Olympic medalists Nesthy Petecio, Carlo Paalam and Eumir Marcial — who are undergoing mandatory quarantine— out of their rooms in Tagaytay.

The Philippine Institute of Volcanology and Seismology (Phivolcs) said the epicenter of the quake, which was felt at 11:08 p.m. on Friday, was 15 kilometers southeast of Calatagan town.

It was tectonic in origin and had depth of 113 kms.

There were no immediate reports of damage.

State seismologists initially reported a magnitude 5.7 earthquake before scaling it up.

According to Phivolcs, the tremor was an aftershock of the magnitude 6.6 quake that hit Calatagan last July 24.

“It is in the same area and depth as the July magnitude 6.6 earthquake. It is smaller in magnitude that is why it is called an aftershock of the July quake,” Phivolcs director Renato Solidum said.

Solidum added that the Calatagan earthquake was not related to volcanic activities in Taal.

JOLT SENDS OLYMPIC MEDALISTS OUT OF ROOMS

Last Friday night’s tremor sent Olympic medalists Nesthy Petecio, Carlo Paalam and Eumir Marcial out of their rooms in Tagaytay.

The athletes were on a mandatory quarantine in a hotel in Tagaytay after returning home from their Tokyo Olympics’ feat.

Petecio, in a Twitter post, shared their picture, showing them standing outside their rooms.

The tremor was also felt in Metro Manila.

Intensity 4 was recorded in Calatagan, Lipa City, Lemery and Taal in Batangas; Puerto Galera and Calapan City in Oriental Mindoro; Lubang, Occidental Mindoro; Binan, Laguna; and Looc, Occidental Mindoro.

Intensity 3 was felt in Manila, Pasig City, Paranaque City, Quezon City, Caloocan City, Mandaluyong City, Valenzuela City, Abra de Ilog, Oriental Mindoro; Obando, Bulacan; Batangas City; and Tanza, Cavite.

Intensity 2 in San Pascual, Bauan, Agoncillo, San Luis, Talisay and San Jose in Batangas; Meycauayan City and Malolos City in Bulacan; Makati City; Pasay City; and Pateros.

MAGNITUDE 5.2 TREMOR HITS DAVAO ORIENTAL

Meanwhile, a magnitude 5.2 earthquake early yesterday morning jolted Tarragona town in Davao Oriental.

The quake, which occurred at 3 a.m. yesterday, was tectonic in origin and had a depth of seven kilometers.

No damage to property was recorded.

Last August 12, a magnitude 7.1 quake hit off the coast of Governor Generoso town in Davao Oriental.