Saturday, February 26, 1983 at 6:49 AM
1983-02-25 22:49 UTC · -18.268°, -69.438°
Magnitude
6.9 mw
Major
Depth
146 km
Intermediate
Energy
337.6 kilotons of TNT
Gutenberg–Richter
Coordinates
-18.268°, -69.438°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause serious damage over larger areas.
At 146 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 (~17770 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 8/100 (low).
2 recorded M4.0+ events within 326 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.