Philippines earthquakes

M6.1 earthquake 10 km ESE of Ambuclao, Philippines

A magnitude 6.1 earthquake struck 10 km ESE of Ambuclao, Philippines on Wed, Jul 18, 1990, 3:06 AM GMT+9 (18:06 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M6.5 14 km NNW of Salinas, Philippines. This one was a foreshock.

Itogon forecast More in Philippines

Map

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

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The earthquake

Magnitude: 6.1 (mw), strong
Local time: Wed, Jul 18, 1990, 3:06 AM GMT+9
UTC: 1990-07-17 18:06:35 UTC
Depth: 18.3 km (11.4 mi), shallow
Epicenter: 16.433° N, 120.838° E
Region: Philippines
Strongest shaking: VII, very strong 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: VII, very strong shaking
Peak ground acceleration: 25.7% of gravity
Peak ground velocity: 3.1 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.

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: 95 in the 60 days after this one and 80 in the 30 days before it.

After

The first 60 of 95.

Before

Earthquakes today Philippines earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0004c30 (also filed as gcmtb071790c, gcmt19900717180634, atlas19900717180637, iscgem363102). Read Wed, Sep 23, 2026, 4:24 AM UTC.