Thursday, July 4, 1991 at 7:43 PM
1991-07-04 11:43 UTC · -8.099°, 124.681°
Magnitude
6.9 mwb
Major
Depth
29 km
Shallow
Energy
337.6 kilotons of TNT
Gutenberg–Richter
Coordinates
-8.099°, 124.681°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause serious damage over larger areas.
At 29 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 (~1458 km away).
Area seismic-hazard score: 8/100 (low).
11 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.