4.2

M4.2 Earthquake 29 km E of Loreto, PhilippinesJuly 16, 2022

2022-07-16 21:47:08 UTC (2022-07-16) · approx. 5:47 AM UTC+8 local

MagnitudeM4.2(mb)
Time21:47 UTC5:47 AM UTC+8
Depth100.2 kmintermediate depth
Coordinates10.319°, 125.839°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 16, 2022 at 21:47 UTC, a magnitude 4.2 intermediate depth earthquake struck 29 km E of Loreto, Philippines, at a depth of 100.2 km and coordinates 10.3195°, 125.8388°.

Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 10.32°, 125.84°

Earthquake Details

Magnitude
4.2 mb
Depth
100.2 km
intermediate depth
Location
10.3195°N
125.8388°E

Technical Information

Event ID
us7000htcw
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
25
Azimuthal Gap
138.0°
Min Station Distance
3.239°
RMS Residual
0.31 sec
Last Updated
2022-09-27 16:57:17 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Loreto, Philippines?

The magnitude 4.2 earthquake that struck 29 km E of Loreto, Philippines on July 16, 2022 at 21:47 UTC had a depth of 100.2 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.2 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000htcw). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, July 16, 2022). M4.2 Earthquake 29 km E of Loreto, PhilippinesJuly 16, 2022. Retrieved September 27, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000htcw/