M5.0 earthquake 65 km SW of Basco, Philippines
A magnitude 5.0 earthquake struck 65 km SW of Basco, Philippines on Mon, Aug 11, 1986, 5:35 PM GMT+8 (09:35 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.6 78 km WSW 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
- 5.0 (mb), moderate
- Local time
- UTC
- 1986-08-11 09:35:48 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 20.101° N, 121.460° 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
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.0 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.678 km WSW of Basco, Philippines · 14653 days ago · 33 km deep · 15 km away
- 4.4101 km SW of Basco, Philippines · 14629 days ago · 79 km deep · 35 km away
- 4.5106 km WSW of Basco, Philippines · 14610 days ago · 48 km deep · 43 km away
- 4.734 km NE of Basco, Philippines · 14606 days ago · 29 km deep · 100 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002x1u. Read Wed, Sep 23, 2026, 9:21 PM UTC.