M4.7 earthquake 69 km SE of Basco, Philippines
A magnitude 4.7 earthquake struck 69 km SE of Basco, Philippines on Mon, May 20, 1985, 10:34 PM GMT+8 (14:34 UTC), 129 km (80 mi) below the surface.
A larger quake followed: M4.9 62 km ENE 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
- 4.7 (mb), light
- Local time
- UTC
- 1985-05-20 14:34:40 UTC
- Depth
- 128.8 km (80.0 mi), intermediate-depth
- Epicenter
- 20.094° N, 122.515° 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 1.7 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.639 km ESE of Basco, Philippines · 15077 days ago · 33 km deep · 31 km away
- 4.962 km ENE of Basco, Philippines · 15062 days ago · 10 km deep · 72 km away
- 5.232 km N of Basco, Philippines · 15062 days ago · 10 km deep · 91 km away
- 4.323 km NE of Basco, Philippines · 15062 days ago · 10 km deep · 70 km away
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002f0k. Read Wed, Sep 23, 2026, 4:46 PM UTC.