Friday, April 21, 1978 at 9:17 PM
1978-04-21 13:17 UTC · 7.089°, 126.615°
Magnitude
4.7 mb
Moderate
Depth
184 km
Intermediate
Energy
169 tons of TNT
Gutenberg–Richter
Coordinates
7.089°, 126.615°
Felt reports
—
Tsunami
No
Source
USGS
Region
Mindanao
Felt widely; can cause minor damage to weak structures.
At 184 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: Philippine Trench (~16 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 53/100 (high).
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.