Tuesday, September 13, 1921 at 10:37 AM
1921-09-13 02:37 UTC · -55.623°, -28.664°
Magnitude
6.9 mw
Major
Depth
35 km
Shallow
Energy
349.5 kilotons of TNT
Gutenberg–Richter
Coordinates
-55.623°, -28.664°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause serious damage over larger areas.
At 35 km this was a shallow earthquake. Shallow quakes concentrate shaking near the epicentre and tend to be the most damaging.
This event sits in the Major range of the moment magnitude scale.
Nearest mapped structure: Cotabato Trench (~13884 km away).
Area seismic-hazard score: 8/100 (low).
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.