Thursday, September 8, 1977 at 12:00 PM
1977-09-08 03:00 UTC · -20.764°, -177.860°
Magnitude
5.1 mb
Strong
Depth
505 km
Deep
Energy
674 tons of TNT
Gutenberg–Richter
Coordinates
-20.764°, -177.860°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause damage to buildings and infrastructure near the epicentre.
At 505 km this was a deep earthquake. Deep quakes are felt over very large areas but rarely cause surface damage.
This event sits in the Strong range of the moment magnitude scale.
Nearest mapped structure: Philippine Trench (~6712 km away). Last major event: 2012 Samar Earthquake (M7.6).
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.