M4.5 earthquake 104 km SSW of Basco, Philippines
A magnitude 4.5 earthquake struck 104 km SSW of Basco, Philippines on Sat, Mar 3, 1979, 2:09 PM GMT+8 (06:09 UTC), 23 km (14 mi) below the surface.
A larger quake followed: M5.3 62 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
- 4.5 (mb), light
- Local time
- UTC
- 1979-03-03 06:09:22 UTC
- Depth
- 23.0 km (14.3 mi), shallow
- Epicenter
- 19.612° N, 121.506° 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
- 17
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.390 km SSW of Basco, Philippines · 17371 days ago · 33 km deep · 15 km away
- 4.565 km NNE of Namuac, Philippines · 17361 days ago · 45 km deep · 51 km away
- 5.362 km SW of Basco, Philippines · 17357 days ago · 45 km deep · 57 km away
- 4.792 km SW of Basco, Philippines · 17346 days ago · 40 km deep · 23 km away
- 4.666 km WSW of Basco, Philippines · 17323 days ago · 26 km deep · 62 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000z4k. Read Wed, Sep 23, 2026, 5:40 AM UTC.