Friday, April 23, 1971 at 6:41 PM
1971-04-23 10:41 UTC · 22.364°, 121.776°
Magnitude
5.2 mw
Strong
Depth
15 km
Shallow
Energy
829 tons of TNT
Gutenberg–Richter
Coordinates
22.364°, 121.776°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause damage to buildings and infrastructure near the epicentre.
At 15 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 Strong range of the moment magnitude scale.
Nearest mapped structure: Manila Trench (~289 km away). Last major event: 1934 Manila Trench Earthquake.
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.