M4.9 earthquake 19 km NE of Piddig, Philippines
A magnitude 4.9 earthquake struck 19 km NE of Piddig, Philippines on Wed, Aug 17, 1983, 9:28 PM GMT+8 (13:28 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.6 8 km S of Padong, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1983-08-17 13:28:08 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 18.303° N, 120.832° 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 1.9 and up: 10 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.728 km NE of Solsona, Philippines · 15747 days ago · 52 km deep · 14 km away
- 4.611 km NNE of Piddig, Philippines · 15747 days ago · 33 km deep · 9 km away
- 3.831 km NW of Pagudpud, Philippines · 15747 days ago · 33 km deep · 58 km away
- 3.937 km NNE of Pagudpud, Philippines · 15739 days ago · 33 km deep · 65 km away
- 4.116 km SSE of Bangui, Philippines · 15737 days ago · 15 km deep · 10 km away
- 4.71 km NW of Pasuquin, Philippines · 15733 days ago · 33 km deep · 24 km away
- 5.68 km S of Padong, Philippines · 15719 days ago · 33 km deep · 37 km away
- 5.027 km SE of Bangui, Philippines · 15712 days ago · 36 km deep · 15 km away
- 4.621 km SE of Bangui, Philippines · 15712 days ago · 33 km deep · 10 km away
- 4.917 km NW of Puro Pinget, Philippines · 15695 days ago · 63 km deep · 84 km away
Before
- 4.711 km ESE of Pagudpud, Philippines · 15749 days ago · 33 km deep · 24 km away
- 6.516 km ENE of Piddig, Philippines · 15749 days ago · 29 km deep · 9 km away
- 5.627 km NNW of Claveria, Philippines · 15755 days ago · 15 km deep · 60 km away
- 5.016 km NW of Claveria, Philippines · 15755 days ago · 28 km deep · 50 km away
- 4.740 km N of Pagudpud, Philippines · 15758 days ago · 41 km deep · 69 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001xr5. Read Tue, Sep 29, 2026, 3:44 PM UTC.