M4.5 earthquake 33 km W of Sangay, Philippines
A magnitude 4.5 earthquake struck 33 km W of Sangay, Philippines on Tue, Apr 25, 1978, 10:49 AM GMT+8 (02:49 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.0 23 km WSW of Sangay, 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
- 1978-04-25 02:49:16 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 6.404° N, 123.740° 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
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 5 in the 30 days before it.
After
- 5.023 km WSW of Sangay, Philippines · 17682 days ago · 43 km deep · 15 km away
- 4.59 km NNE of Gadung, Philippines · 17669 days ago · 563 km deep · 63 km away
- 5.355 km WSW of Sangay, Philippines · 17656 days ago · 572 km deep · 29 km away
Before
- 5.47 km WSW of Sangay, Philippines · 17683 days ago · 33 km deep · 27 km away
- 4.227 km SE of Malim, Philippines · 17689 days ago · 46 km deep · 97 km away
- 5.324 km W of Gadung, Philippines · 17703 days ago · 46 km deep · 42 km away
- 5.626 km W of Gadung, Philippines · 17703 days ago · 43 km deep · 42 km away
- 5.252 km WSW of Gadung, Philippines · 17711 days ago · 602 km deep · 39 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000u8p. Read Tue, Sep 22, 2026, 5:28 PM UTC.