M4.2 earthquake 6 km NE of Adlay, Philippines
A magnitude 4.2 earthquake struck 6 km NE of Adlay, Philippines on Thu, Dec 17, 1981, 11:57 PM GMT+8 (15:57 UTC), 82 km (51 mi) below the surface.
A larger quake followed: M4.8 17 km ENE of Pilar, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb), light
- Local time
- UTC
- 1981-12-17 15:57:25 UTC
- Depth
- 82.3 km (51.1 mi), intermediate-depth
- Epicenter
- 9.443° N, 125.947° 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: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.817 km ENE of Pilar, Philippines · 16347 days ago · 53 km deep · 64 km away
- 4.68 km E of Santa Monica, Philippines · 16321 days ago · 76 km deep · 67 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001hff. Read Wed, Sep 23, 2026, 9:06 AM UTC.