Philippines earthquakes

M5.6 earthquake 5 km SSW of Balayan, Philippines

A magnitude 5.6 earthquake struck 5 km SSW of Balayan, Philippines on Sat, Mar 14, 1981, 2:21 AM GMT+8 (18:21 UTC), 144 km (89 mi) below the surface.

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Map

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The earthquake

Magnitude
5.6 (mb), moderate
Local time
UTC
1981-03-13 18:21:39 UTC
Depth
143.9 km (89.4 mi), intermediate-depth
Epicenter
13.898° N, 120.706° E
Strongest shaking
IV, light shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
IV, light shaking
Peak ground acceleration
1.2% of gravity
Peak ground velocity
-0.5 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

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 1 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001cph (also filed as gcmtb031381a, gcmt19810313182139, iscgem629813). Read Mon, Sep 21, 2026, 2:57 PM UTC.