M5.1 earthquake 25 km NNE of Alugan, Philippines
A magnitude 5.1 earthquake struck 25 km NNE of Alugan, Philippines on Sat, Feb 18, 1978, 11:00 PM GMT+8 (15:00 UTC), 14 km (9 mi) below the surface.
A larger quake followed: M5.2 17 km ENE of Cabodiongan, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mb), moderate
- Local time
- UTC
- 1978-02-18 15:00:35 UTC
- Depth
- 14.0 km (8.7 mi), shallow
- Epicenter
- 12.421° N, 125.601° 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
- 55
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 3 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000t15. Read Wed, Sep 30, 2026, 5:09 AM UTC.