Wednesday, April 28, 1976 at 3:59 PM
1976-04-28 07:59 UTC · -4.562°, 149.886°
Magnitude
5.6 mb
Strong
Depth
521 km
Deep
Energy
3.8 kilotons of TNT
Gutenberg–Richter
Coordinates
-4.562°, 149.886°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause damage to buildings and infrastructure near the epicentre.
At 521 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 (~2704 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 8/100 (low).
9 recorded M4.0+ events within 274 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.