M4.9 earthquake 56 km SE of Bobon, Philippines
A magnitude 4.9 earthquake struck 56 km SE of Bobon, Philippines on Sat, Mar 31, 1973, 9:38 AM GMT+8 (01:38 UTC), 93 km (58 mi) below the surface.
A larger quake followed: M5.1 118 km ESE of Pondaguitan, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1973-03-31 01:38:01 UTC
- Depth
- 93.0 km (57.8 mi), intermediate-depth
- Epicenter
- 6.505° N, 126.688° 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.
- Stations used
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 4 in the 60 days after this one and 7 in the 30 days before it.
After
- 4.2120 km ESE of Pondaguitan, Philippines · 19531 days ago · 81 km deep · 79 km away
- 4.635 km SSE of Tamisan, Philippines · 19521 days ago · 33 km deep · 27 km away
- 5.1118 km ESE of Pondaguitan, Philippines · 19516 days ago · 69 km deep · 88 km away
- 5.050 km ESE of Santiago, Philippines · 19510 days ago · 33 km deep · 73 km away
Before
- 5.148 km SSE of Pondaguitan, Philippines · 19542 days ago · 102 km deep · 74 km away
- 4.8106 km SE of Pondaguitan, Philippines · 19550 days ago · 65 km deep · 99 km away
- 4.875 km ESE of Pondaguitan, Philippines · 19554 days ago · 96 km deep · 58 km away
- 4.798 km E of Pondaguitan, Philippines · 19555 days ago · 70 km deep · 53 km away
- 4.788 km ESE of Pondaguitan, Philippines · 19555 days ago · 82 km deep · 47 km away
- 6.0128 km E of Pondaguitan, Philippines · 19555 days ago · 55 km deep · 76 km away
- 5.378 km ESE of Pondaguitan, Philippines · 19559 days ago · 84 km deep · 43 km away
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000015x. Read Tue, Sep 22, 2026, 7:39 PM UTC.