M4.7 earthquake 100 km SW of Basco, Philippines
A magnitude 4.7 earthquake struck 100 km SW of Basco, Philippines on Mon, Jun 25, 1973, 4:04 PM GMT+8 (08:04 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.0 75 km SW 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
- 1973-06-25 08:04:00 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 19.827° N, 121.271° 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
- Stations used
- 31
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.075 km SW of Basco, Philippines · 19422 days ago · 72 km deep · 27 km away
- 3.9141 km N of Pagudpud, Philippines · 19422 days ago · 70 km deep · 59 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00002cz. Read Wed, Sep 23, 2026, 8:38 AM UTC.