Thursday, April 4, 1985 at 4:21 AM
1985-04-03 20:21 UTC · 28.230°, 139.525°
Magnitude
6.5 mw
Major
Depth
469 km
Deep
Energy
84.8 kilotons of TNT
Gutenberg–Richter
Coordinates
28.230°, 139.525°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause serious damage over larger areas.
At 469 km this was a deep earthquake. Deep quakes are felt over very large areas but rarely cause surface damage.
This event sits in the Major range of the moment magnitude scale.
Nearest mapped structure: Manila Trench (~2176 km away). Last major event: 1934 Manila Trench Earthquake.
Area seismic-hazard score: 8/100 (low).
8 recorded M4.0+ events within 310 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.