Tuesday, March 22, 1977 at 2:57 PM
1977-03-22 06:57 UTC · 16.785°, 122.525°
Magnitude
4.6 mb
Moderate
Depth
70 km
Intermediate
Energy
120 tons of TNT
Gutenberg–Richter
Coordinates
16.785°, 122.525°
Felt reports
—
Tsunami
No
Source
USGS
Region
Luzon
Felt widely; can cause minor damage to weak structures.
At 70 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 Fault Zone (~32 km away). Last major event: 1990 Luzon Earthquake (M7.8).
Area seismic-hazard score: 65/100 (very high).
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.