M4.3 earthquake 139 km WSW of Basco, Philippines
A magnitude 4.3 earthquake struck 139 km WSW of Basco, Philippines on Sun, Apr 26, 1987, 3:49 PM GMT+8 (07:49 UTC), 41 km (25 mi) below the surface.
A larger quake followed: M6.3 63 km W of Basco, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 1987-04-26 07:49:28 UTC
- Depth
- 40.5 km (25.2 mi), shallow
- Epicenter
- 20.002° N, 120.720° E
- Region
- Philippines
- 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
- FROM_LOCATION
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 3 in the 30 days before it.
After
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00034g1. Read Thu, Sep 24, 2026, 3:00 PM UTC.