Monday, October 17, 1983 at 2:26 PM
1983-10-17 06:26 UTC · 3.136°, 127.063°
Magnitude
4.2 mb
Moderate
Depth
79 km
Intermediate
Energy
30 tons of TNT
Gutenberg–Richter
Coordinates
3.136°, 127.063°
Felt reports
—
Tsunami
No
Source
USGS
Region
Philippine Sea
Felt widely; can cause minor damage to weak structures.
At 79 km this was a intermediate earthquake. Intermediate-depth quakes spread shaking over a wider area but are usually less destructive at the surface.
This event sits in the Moderate range of the moment magnitude scale.
Nearest mapped structure: Philippine Trench (~213 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 13/100 (low).
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.