Philippines earthquakes

M5.5 earthquake 12 km WNW of Abra de Ilog, Philippines

A magnitude 5.5 earthquake struck 12 km WNW of Abra de Ilog, Philippines on Thu, Apr 27, 1972, 1:35 AM GMT+8 (17:35 UTC), 51 km (31 mi) below the surface.

A larger quake followed: M6.2 40 km W of Harrison, Philippines. This one was a foreshock.

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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: Thu, Apr 27, 1972, 1:35 AM GMT+8
UTC: 1972-04-26 17:35:10 UTC
Depth: 50.6 km (31.4 mi), shallow
Epicenter: 13.499° N, 120.629° E
Region: Philippines
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: ±0.23
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: 8 in the 60 days after this one and 4 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem774816. Read Wed, Sep 30, 2026, 8:10 AM UTC.