Sunday, May 21, 1978 at 12:55 PM
1978-05-21 04:55 UTC · 4.949°, 125.516°
Magnitude
4.9 mb
Moderate
Depth
73 km
Intermediate
Energy
338 tons of TNT
Gutenberg–Richter
Coordinates
4.949°, 125.516°
Felt reports
—
Tsunami
No
Source
USGS
Region
Mindanao
Felt widely; can cause minor damage to weak structures.
At 73 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 Moderate range of the moment magnitude scale.
Nearest mapped structure: Cotabato Trench (~84 km away).
Area seismic-hazard score: 36/100 (moderate).
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.