Friday, January 21, 1977 at 2:11 PM
1977-01-21 06:11 UTC · -18.014°, -178.379°
Magnitude
5.8 mb
Strong
Depth
604 km
Deep
Energy
7.6 kilotons of TNT
Gutenberg–Richter
Coordinates
-18.014°, -178.379°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause damage to buildings and infrastructure near the epicentre.
At 604 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 (~6559 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 8/100 (low).
6 recorded M4.0+ events within 282 km in the 90 days after this earthquake.
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.