Friday, January 23, 1981 at 12:58 PM
1981-01-23 04:58 UTC · 42.524°, 142.122°
Magnitude
6.3 mb
Major
Depth
116 km
Intermediate
Energy
42.5 kilotons of TNT
Gutenberg–Richter
Coordinates
42.524°, 142.122°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause serious damage over larger areas.
At 116 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: Manila Trench (~3131 km away). Last major event: 1934 Manila Trench Earthquake.
Area seismic-hazard score: 8/100 (low).
4 recorded M4.0+ events within 302 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.