Friday, October 30, 1987 at 4:23 AM
1987-10-29 20:23 UTC · 4.817°, 127.688°
Magnitude
6.8 mw
Major
Depth
153 km
Intermediate
Energy
239.0 kilotons of TNT
Gutenberg–Richter
Coordinates
4.817°, 127.688°
Felt reports
—
Tsunami
No
Source
USGS
Region
Philippine Sea
Can cause serious damage over larger areas.
At 153 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 Major range of the moment magnitude scale.
Nearest mapped structure: Philippine Trench (~29 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 36/100 (moderate).
16 recorded M4.0+ events within 322 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.