Philippines earthquakes

M4.6 earthquake 50 km ENE of Cortes, Philippines

A magnitude 4.6 earthquake struck 50 km ENE of Cortes, Philippines on Thu, Jul 23, 1987, 10:36 PM GMT+8 (14:36 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.2 61 km E of Marihatag, 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
4.6 (mb), light
Local time
UTC
1987-07-23 14:36:32 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
9.500° N, 126.589° E
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.

Depth from
OPERATOR_ASSIGNED

Nearest places

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

Nearby

Within 100 km, magnitude 1.6 and up: 7 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 4.751 km ENE of Santa Monica, Philippines · 14311 days ago · 33 km deep · 72 km away
  2. 4.77 km N of Socorro, Philippines · 14294 days ago · 33 km deep · 70 km away
  3. 5.261 km E of Marihatag, Philippines · 14287 days ago · 54 km deep · 91 km away
  4. 4.845 km NE of Santa Monica, Philippines · 14277 days ago · 52 km deep · 90 km away
  5. 5.234 km ENE of Bacolod, Philippines · 14258 days ago · 60 km deep · 48 km away
  6. 4.748 km ENE of Aras-asan, Philippines · 14258 days ago · 33 km deep · 50 km away
  7. 5.136 km ENE of Bacolod, Philippines · 14257 days ago · 38 km deep · 47 km away

Before

  1. 5.064 km ENE of Santa Monica, Philippines · 14315 days ago · 27 km deep · 81 km away
  2. 4.843 km ENE of Santa Monica, Philippines · 14330 days ago · 33 km deep · 77 km away
  3. 4.762 km ENE of Pilar, Philippines · 14330 days ago · 33 km deep · 70 km away
  4. 4.761 km ENE of Santa Monica, Philippines · 14332 days ago · 33 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00036wk. Read Tue, Sep 29, 2026, 1:59 PM UTC.