Philippines earthquakes

M5.6 earthquake 49 km E of Union, Philippines

A magnitude 5.6 earthquake struck 49 km E of Union, Philippines on Mon, Sep 24, 1973, 6:41 PM GMT+8 (10:41 UTC), 45 km (28 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: 5.6 (mb), moderate
Local time: Mon, Sep 24, 1973, 6:41 PM GMT+8
UTC: 1973-09-24 10:41:10 UTC
Depth: 45.0 km (28.0 mi), shallow
Epicenter: 9.822° N, 126.558° E
Region: Philippines
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: 2.5% of gravity
Peak ground velocity: 0.7 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.

Stations used: 30

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 9 in the 30 days before it.

After

Before

Earthquakes today Philippines earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00003j0 (also filed as iscgem756659). Read Wed, Sep 23, 2026, 5:41 AM UTC.