Philippines earthquakes

M5.3 earthquake 25 km ENE of Pilar, Philippines

A magnitude 5.3 earthquake struck 25 km ENE of Pilar, Philippines on Sat, Sep 22, 1973, 1:01 PM GMT+8 (05:01 UTC), 36 km (22 mi) below the surface.

A larger quake followed: M5.6 49 km E of Union, Philippines. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
5.3 (mb), moderate
Local time
UTC
1973-09-22 05:01:44 UTC
Depth
36.0 km (22.4 mi), shallow
Epicenter
9.961° N, 126.313° E
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
46

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.3 and up: 13 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 5.17 km ESE of Pilar, Philippines · 19359 days ago · 54 km deep · 22 km away
  2. 4.74 km E of Union, Philippines · 19358 days ago · 69 km deep · 28 km away
  3. 4.576 km ENE of Pilar, Philippines · 19357 days ago · 33 km deep · 51 km away
  4. 4.881 km E of Union, Philippines · 19357 days ago · 37 km deep · 61 km away
  5. 4.913 km E of Pilar, Philippines · 19357 days ago · 45 km deep · 15 km away
  6. 5.228 km ENE of Pilar, Philippines · 19357 days ago · 46 km deep · 4 km away
  7. 4.715 km WNW of Del Carmen, Surigao del Norte, Philippines · 19357 days ago · 120 km deep · 52 km away
  8. 5.649 km E of Union, Philippines · 19356 days ago · 45 km deep · 31 km away
  9. 5.26 km NNE of Pilar, Philippines · 19350 days ago · 77 km deep · 21 km away
  10. 4.911 km ESE of Santa Monica, Philippines · 19348 days ago · 76 km deep · 20 km away
  11. 5.05 km E of Pilar, Philippines · 19348 days ago · 71 km deep · 20 km away
  12. 4.975 km ENE of Pilar, Philippines · 19348 days ago · 44 km deep · 50 km away
  13. 5.04 km NE of Tagana-an, Philippines · 19344 days ago · 82 km deep · 81 km away

Before

  1. 5.84 km SW of Mabahin, Philippines · 19368 days ago · 68 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00003gr (also filed as iscgem756584, iscgemsup756584). Read Tue, Sep 22, 2026, 7:50 PM UTC.