Monday, December 21, 2020

Magnitude 4.9 earthquake

Magnitude 4.9 earthquake - Philippine Sea, 23 km southwest of Polillo Island, Quezon, Calabarzon, Philippines, on Tuesday, 22 Dec 2:14 am (GMT +8) 

Magnitude 4.9 earthquake near Tanay, Rizal, Calabarzon, Philippines, was reported only 21 minutes ago by the German Research Centre for Geosciences (GFZ), considered one of the key international agencies that monitor seismic activity worldwide. The earthquake occurred at a shallow depth of 10 km beneath the epicenter early morning on Tuesday 22 December 2020 at 2:14 am local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.

A monitoring service identified a second report from the Philippine Institute of Volcanology and Seismology (PHIVOLCS) which listed the quake at magnitude 4.9 as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 4.9.

Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.

In Paete (pop. 26,900) located 33 km from the epicenter, the quake should have been felt as light shaking.

Weak shaking might have been felt in Pililla (pop. 30,400) located 34 km from the epicenter, Tanay (pop. 60,000) 35 km away, Morong (pop. 49,600) 39 km away, Rodriguez (pop. 134,400) 42 km away, Santa Cruz (pop. 108,100) 44 km away, Binangonan (pop. 219,200) 46 km away, Taytay (pop. 231,500) 48 km away, Quezon City (pop. 2,761,700) 56 km away, and Manila (pop. 1,600,000) 63 km away.

VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. 

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