Sunday, March 20, 1983 at 9:45 PM
1983-03-20 13:45 UTC · -4.694°, 153.161°
Magnitude
6.4 mw
Major
Depth
80 km
Intermediate
Energy
60.0 kilotons of TNT
Gutenberg–Richter
Coordinates
-4.694°, 153.161°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause serious damage over larger areas.
At 80 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 Major range of the moment magnitude scale.
Nearest mapped structure: Philippine Trench (~3047 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 8/100 (low).
17 recorded M4.0+ events within 306 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.