M5.1 earthquake 63 km N of Namuac, Philippines
A magnitude 5.1 earthquake struck 63 km N of Namuac, Philippines on Fri, Oct 16, 1981, 4:46 AM GMT+8 (20:46 UTC), 23 km (14 mi) below the surface.
A larger quake followed: M6.5 21 km NNE of Pagudpud, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mb), moderate
- Local time
- UTC
- 1981-10-15 20:46:25 UTC
- Depth
- 23.0 km (14.3 mi), shallow
- Epicenter
- 19.186° N, 121.185° 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
- CONSTRAINED_BY_DEPTH_PHASES
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 6.521 km NNE of Pagudpud, Philippines · 16383 days ago · 24 km deep · 60 km away
- 3.736 km NNW of Claveria, Philippines · 16383 days ago · 33 km deep · 37 km away
- 3.825 km NNW of Pagudpud, Philippines · 16382 days ago · 33 km deep · 67 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001gfu (also filed as iscgemsup609993). Read Thu, Oct 1, 2026, 12:50 AM UTC.