Sunday, December 21, 1997 at 4:09 PM
1997-12-21 08:09 UTC · 3.223°, 122.602°
Magnitude
4.9 mb
Moderate
Depth
550 km
Deep
Energy
338 tons of TNT
Gutenberg–Richter
Coordinates
3.223°, 122.602°
Felt reports
—
Tsunami
No
Source
USGS
Region
Celebes Sea
Felt widely; can cause minor damage to weak structures.
At 550 km this was a deep earthquake. Deep quakes are felt over very large areas but rarely cause surface damage.
This event sits in the Moderate range of the moment magnitude scale.
Nearest mapped structure: Cotabato Trench (~246 km away).
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.