Moderate mag. 4.7 earthquake - South China Sea, 93 km northwest of Санта-Крус, Philippines, on Thursday, 25 Feb 2021 10:55 am (GMT +8)

Moderate magnitude 4.7 earthquake at 4 km depth

25 Feb 03:10 UTC: First to report: PHIVOLCS after 15 minutes.

Update Thu, 25 Feb 2021, 03:15

Moderate 4.7 quake hits near Santa Cruz, Zambales, Central Luzon, Philippines

4.7 quake 25 Feb 10:55 am (GMT +8)

4.7 quake 25 Feb 10:55 am (GMT +8)

A very shallow magnitude 4.7 earthquake was reported in the morning near Santa Cruz, Zambales, Central Luzon, Philippines.
According to the Philippine Institute of Volcanology and Seismology (PHIVOLCS), the quake hit on Thursday 25 February 2021 at 10:55 am local time at a very shallow depth of 4 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 4.7 as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Ilioilio (pop. 2,100) located 72 km from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Santa Cruz (pop. 26,400) located 93 km from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you’re in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

If you were or still are in this area during the quake help others with your feedback and file a quick report here.

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Earthquake data:

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Date & time: 25 Feb 2021 02:55:00 UTC –
Local time at epicenter: Thursday, 25 Feb 2021 10:55 am (GMT +8)
Magnitude: 4.7
Depth: 4.0 km
Epicenter latitude / longitude: 16.1°N / 119.11°E (
South China Sea, Philippines)
Nearest volcano: Santo Tomas (156 km / 97 mi)
Nearby towns and cities:
72 km (45 mi) WNW of Ilioilio (pop: 2,120) –> See nearby quakes!
93 km (58 mi) WNW of Santa Cruz (pop: 26,400) –> See nearby quakes!
120 km (75 mi) W of Lingayen (pop: 56,600) –> See nearby quakes!
131 km (81 mi) W of Dagupan (pop: 171,300) –> See nearby quakes!
138 km (86 mi) W of Mangaldan (pop: 88,800) –> See nearby quakes!
141 km (88 mi) WSW of San Fernando (pop: 83,000) –> See nearby quakes!
157 km (97 mi) W of Urdaneta (pop: 101,000) –> See nearby quakes!
162 km (101 mi) WSW of Baguio City (pop: 272,700) –> See nearby quakes!
256 km (159 mi) NW of Caloocan City (pop: 1,500,000) –> See nearby quakes!
261 km (162 mi) NW of Manila (pop: 1,600,000) –> See nearby quakes!
202 km (126 mi) W of Luzon Island (pop: 46,228,000) –> See nearby quakes!

Weather at epicenter at time of quake:
Overcast Clouds 27.1°C (81 F), humidity: 76%, wind: 1 m/s (2 kts) from SE

Primary data source: PHIVOLCS (Philippine Institute of Volcanology and Seismology)
Estimated released energy: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tons of TNT) More info

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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.

Magnitude Depth Location Source
M 4.7 4 km 074 Km S 89° W of Agno (Pangasinan), Philippines PHIVOLCS
M 4.9 35 km 19 Km W of Ilioilio, Philippines USGS

User reports for this quake (1)

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Aquilino Managbanag

By Aquilino Managbanag

Aquilino Managbanag EXPERIENCE: Four years at The Asian Pacific Post, a weekly Canadian newspaper founded in 1993 in Vancouver, British Columbia. The newspaper specialized in reporting Asian issues, and has a readership of 160,000. It has a sister publication in The South Asian Post. EDUCATION: University of Santo Tomas – Manila -- The private Roman Catholic research university is Asia’s oldest existing university. The university takes pride in keeping the Catholic faith and beliefs prominent while holding true to its centuries-old tradition of academic excellence.