Philippines earthquakes

M5.5 earthquake 26 km SW of Harrison, Philippines

A magnitude 5.5 earthquake struck 26 km SW of Harrison, Philippines on Sun, Apr 30, 1972, 8:13 AM GMT+8 (00:13 UTC), 44 km (27 mi) below the surface.

A larger quake followed: M5.9 12 km N of Harrison, 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
5.5 (mw), moderate
Local time
UTC
1972-04-30 00:13:29 UTC
Depth
44.2 km (27.5 mi), shallow
Epicenter
13.286° N, 120.257° 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.

Magnitude uncertainty
±0.33
Depth from
From location

Nearest places

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

Nearby

Within 100 km, magnitude 2.5 and up: 4 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 5.912 km N of Harrison, Philippines · 19869 days ago · 32 km deep · 36 km away
  2. 6.240 km W of Harrison, Philippines · 19852 days ago · 27 km deep · 24 km away
  3. 5.528 km SW of Paluan, Philippines · 19843 days ago · 20 km deep · 9 km away
  4. 5.58 km SW of Paluan, Philippines · 19819 days ago · 46 km deep · 18 km away

Before

  1. 5.332 km W of Tayaman, Philippines · 19872 days ago · 20 km deep · 13 km away
  2. 5.812 km NNW of Cabacao, Philippines · 19872 days ago · 62 km deep · 41 km away
  3. 5.915 km NE of Harrison, Philippines · 19872 days ago · 24 km deep · 41 km away
  4. 5.512 km WNW of Abra de Ilog, Philippines · 19873 days ago · 51 km deep · 47 km away
  5. 5.5Mindoro, Philippines · 19873 days ago · 44 km deep · 15 km away
  6. 5.915 km ENE of Paluan, Philippines · 19873 days ago · 25 km deep · 42 km away
  7. 5.36 km NE of Paluan, Philippines · 19873 days ago · 65 km deep · 33 km away
  8. 7.318 km W of Harrison, Philippines · 19874 days ago · 26 km deep · 15 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem774908. Read Wed, Sep 23, 2026, 8:10 AM UTC.