M4.8 earthquake 53 km NE of Hernani, Philippines
A magnitude 4.8 earthquake struck 53 km NE of Hernani, Philippines on Fri, Apr 24, 1981, 6:30 PM GMT+8 (10:30 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.0 15 km WNW of General MacArthur, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb), light
- Local time
- UTC
- 1981-04-24 10:30:05 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 11.623° N, 126.009° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 5 in the 60 days after this one and 0 in the 30 days before it.
After
- 5.015 km WNW of General MacArthur, Philippines · 16555 days ago · 78 km deep · 76 km away
- 4.812 km E of San Sebastian, Philippines · 16547 days ago · 74 km deep · 96 km away
- 4.813 km SW of Guiuan, Philippines · 16542 days ago · 75 km deep · 87 km away
- 3.614 km WNW of Balud, Philippines · 16538 days ago · 82 km deep · 77 km away
- 5.018 km WNW of General MacArthur, Philippines · 16535 days ago · 77 km deep · 77 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001daw. Read Mon, Sep 21, 2026, 6:43 PM UTC.