M6.1 earthquake 99 km WNW of Basco, Philippines
A magnitude 6.1 earthquake struck 99 km WNW of Basco, Philippines on Tue, Sep 7, 1954, 1:47 AM GMT+9 (16:47 UTC), 25 km (16 mi) below the surface.
A larger quake followed: M6.1 115 km WNW 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
- 6.1 (mw), strong
- Local time
- UTC
- 1954-09-06 16:47:05 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 20.724° N, 121.064° 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.
- Magnitude uncertainty
- ±0.21
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 5 in the 60 days after this one and 0 in the 30 days before it.
After
- 6.1115 km WNW of Basco, Philippines · 26315 days ago · 25 km deep · 18 km away
- 6.2118 km W of Basco, Philippines · 26315 days ago · 25 km deep · 35 km away
- 6.0105 km W of Basco, Philippines · 26315 days ago · 25 km deep · 30 km away
- 5.9Batan Islands region, Philippines · 26308 days ago · 25 km deep · 37 km away
- 6.079 km WNW of Basco, Philippines · 26308 days ago · 25 km deep · 24 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem891037. Read Thu, Sep 24, 2026, 3:59 AM UTC.