Friday, December 18, 1987 at 1:01 PM
1987-12-18 05:01 UTC · -1.403°, -77.803°
Magnitude
5.5 mw
Strong
Depth
177 km
Intermediate
Energy
2.7 kilotons of TNT
Gutenberg–Richter
Coordinates
-1.403°, -77.803°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause damage to buildings and infrastructure near the epicentre.
At 177 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 Strong range of the moment magnitude scale.
Nearest mapped structure: Philippine Trench (~17164 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.