Sunday, August 21, 1983 at 4:34 PM
1983-08-21 08:34 UTC · 3.742°, 126.617°
Magnitude
5.9 mw
Strong
Depth
46 km
Shallow
Energy
10.7 kilotons of TNT
Gutenberg–Richter
Coordinates
3.742°, 126.617°
Felt reports
—
Tsunami
No
Source
USGS
Region
Celebes Sea
Can cause damage to buildings and infrastructure near the epicentre.
At 46 km this was a shallow earthquake. Shallow quakes concentrate shaking near the epicentre and tend to be the most damaging.
This event sits in the Strong range of the moment magnitude scale.
Nearest mapped structure: Philippine Trench (~171 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 19/100 (low).
14 recorded M4.0+ events within 286 km in the 90 days after this earthquake.
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.