Sunday, July 18, 1971 at 4:10 AM
1971-07-17 20:10 UTC · -21.525°, -68.318°
Magnitude
5.6 mw
Strong
Depth
121 km
Intermediate
Energy
3.8 kilotons of TNT
Gutenberg–Richter
Coordinates
-21.525°, -68.318°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause damage to buildings and infrastructure near the epicentre.
At 121 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 Strong range of the moment magnitude scale.
Nearest mapped structure: Philippine Trench (~17628 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 8/100 (low).
4 recorded M4.0+ events within 274 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.