Saturday, October 9, 1971 at 7:05 PM
1971-10-09 11:05 UTC · 43.045°, 143.912°
Magnitude
5.5 mw
Strong
Depth
115 km
Intermediate
Energy
2.7 kilotons of TNT
Gutenberg–Richter
Coordinates
43.045°, 143.912°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause damage to buildings and infrastructure near the epicentre.
At 115 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: Manila Trench (~3282 km away). Last major event: 1934 Manila Trench Earthquake.
Area seismic-hazard score: 8/100 (low).
1 recorded M4.0+ event within 270 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.