Monday, April 5, 1971 at 5:04 PM
1971-04-05 09:04 UTC · 53.175°, -170.528°
Magnitude
6.1 mw
Major
Depth
148 km
Intermediate
Energy
18.6 kilotons of TNT
Gutenberg–Richter
Coordinates
53.175°, -170.528°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause serious damage over larger areas.
At 148 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 (~6981 km away). Last major event: 1934 Manila Trench Earthquake.
Area seismic-hazard score: 8/100 (low).
7 recorded M4.0+ events within 292 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.