4.7

M4.7 Earthquake 72 km NNW of Claveria, Philippines — December 7, 2020

2020-12-07 06:43:07 UTC (2020-12-07) · approx. 2:43 PM UTC+8 local

MagnitudeM4.7(mb)
Time06:43 UTC≈ 2:43 PM UTC+8
Depth32.8 kmshallow crustal
Coordinates19.227°, 120.870°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 7, 2020 at 06:43 UTC, a magnitude 4.7 shallow crustal earthquake struck 72 km NNW of Claveria, Philippines, at a depth of 32.8 km and coordinates 19.2273°, 120.8696°.

Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.

The epicenter is located in Philippines, a region characterized by the Manila Trench and Philippine Trench subduction systems, where the Philippine Sea Plate overrides the Eurasian Plate. The nearest mapped fault system is the Philippine Fault. View all earthquakes in Philippines.

Learn more: Magnitude scale · Aftershock sequences

Map showing earthquake epicenter at 19.23°, 120.87°

Earthquake Details

Magnitude
4.7 mb
Depth
32.8 km
shallow crustal
Location
19.2273°N
120.8696°E

Technical Information

Event ID
us7000cnsb
Event Type
earthquake
Status
✓ Reviewed
Significance
340
Azimuthal Gap
111.0°
Min Station Distance
1.712°
RMS Residual
0.61 sec
Last Updated
2021-02-12 22:39:55 UTC

Common Questions

How strong was the magnitude 4.7 earthquake near Claveria, Philippines?

The magnitude 4.7 earthquake that struck 72 km NNW of Claveria, Philippines on December 7, 2020 at 06:43 UTC had a depth of 32.8 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 19.2273°, 120.8696°, which is 72 km NNW of Claveria, Philippines. View all earthquakes in Philippines.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.

Has Philippines had earthquakes this big before?

The largest recorded earthquake in Philippines was the M8.0 Mindanao earthquake of August 17, 1976. Today's magnitude 4.7 event is significantly smaller than that historical record.

Authoritative source: USGS event page (event ID: us7000cnsb). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, December 7, 2020). M4.7 Earthquake 72 km NNW of Claveria, Philippines — December 7, 2020. Retrieved February 12, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000cnsb/