M6.5 earthquake 16 km ENE of Piddig, Philippines
A magnitude 6.5 earthquake struck 16 km ENE of Piddig, Philippines on Wed, Aug 17, 1983, 8:17 PM GMT+8 (12:17 UTC), 29 km (18 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.5 (ms), strong
- Local time
- UTC
- 1983-08-17 12:17:56 UTC
- Depth
- 28.8 km (17.9 mi), shallow
- Epicenter
- 18.231° N, 120.860° E
- Region
- Philippines
- Strongest shaking
- VI, strong shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Deaths and damage
From NOAA NCEI’s Significant Earthquake Database (record 4987), matched to this event by time and place.
- Deaths
- 16
- Injuries
- 47; 471 with its tsunami and other effects
- Damage
- $2.2 million
- Houses destroyed
- Many (101 to 1,000)
- Houses damaged
- Many (101 to 1,000)
Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- VI, strong shaking
- Peak ground acceleration
- 20.3% of gravity
- Peak ground velocity
- 2.8 cm/s
- Map
- Automatic
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
- CONSTRAINED_BY_DEPTH_PHASES
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 3.5 and up: 12 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.711 km ESE of Pagudpud, Philippines · 15749 days ago · 33 km deep · 32 km away
- 4.919 km NE of Piddig, Philippines · 15749 days ago · 33 km deep · 9 km away
- 4.728 km NE of Solsona, Philippines · 15747 days ago · 52 km deep · 12 km away
- 4.611 km NNE of Piddig, Philippines · 15747 days ago · 33 km deep · 11 km away
- 3.831 km NW of Pagudpud, Philippines · 15746 days ago · 33 km deep · 67 km away
- 3.937 km NNE of Pagudpud, Philippines · 15739 days ago · 33 km deep · 73 km away
- 4.116 km SSE of Bangui, Philippines · 15737 days ago · 15 km deep · 19 km away
- 4.71 km NW of Pasuquin, Philippines · 15733 days ago · 33 km deep · 29 km away
- 5.68 km S of Padong, Philippines · 15718 days ago · 33 km deep · 30 km away
- 5.027 km SE of Bangui, Philippines · 15712 days ago · 36 km deep · 18 km away
- 4.621 km SE of Bangui, Philippines · 15712 days ago · 33 km deep · 16 km away
- 4.917 km NW of Puro Pinget, Philippines · 15695 days ago · 63 km deep · 81 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001xr0 (also filed as gcmtb081783c, gcmt19830817121755, atlas19830817121757, iscgem570383). Read Tue, Sep 29, 2026, 8:18 AM UTC.