Sunday, February 21, 1971 at 6:35 PM
1971-02-21 10:35 UTC · -23.780°, -67.177°
Magnitude
6.9 mw
Major
Depth
189 km
Intermediate
Energy
304.4 kilotons of TNT
Gutenberg–Richter
Coordinates
-23.780°, -67.177°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause serious damage over larger areas.
At 189 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 (~17524 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 8/100 (low).
1 recorded M4.0+ event within 325 km in the 90 days after this earthquake.
No other recent earthquakes nearby.
Browse all earthquakes →Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.