Philippines earthquakes

M7.7 earthquake 4 km E of Macapsing, Philippines

A magnitude 7.7 earthquake struck 4 km E of Macapsing, Philippines on Mon, Jul 16, 1990, 4:26 PM GMT+9 (07:26 UTC), 25 km (16 mi) below the surface.

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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: 7.7 (mw), major
Local time: Mon, Jul 16, 1990, 4:26 PM GMT+9
UTC: 1990-07-16 07:26:34 UTC
Depth: 25.1 km (15.6 mi), shallow
Epicenter: 15.679° N, 121.172° E
Region: Philippines
Strongest shaking: IX, violent 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: IX, violent shaking
Peak ground acceleration: 114.4% of gravity
Peak ground velocity: 5.0 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.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Strike-slip
Moment magnitude: 7.7 Mww
Nodal plane 1: Strike 334°, dip 83°, rake 331°
Nodal plane 2: Strike 68°, dip 61°, rake -172°
Landslide alert: Red
Liquefaction alert: Red

How well it is located

Reviewed by a seismologist.

Depth from: CONSTRAINED_BY_DEPTH_PHASES

Nearest places

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

Nearby

Within 100 km, magnitude 2.5 and up: 143 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 143.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0004bxs (also filed as choy19900716072634, gcmtc071690a, duputel071690a, gcmt19900716072634, atlas19900716072634, iscgem362868). Read Wed, Sep 23, 2026, 12:41 AM UTC.