Wednesday, February 23, 1983 at 5:21 AM
1983-02-22 21:21 UTC · 3.788°, 124.244°
Magnitude
4.1 mb
Moderate
Depth
340 km
Deep
Energy
21 tons of TNT
Gutenberg–Richter
Coordinates
3.788°, 124.244°
Felt reports
—
Tsunami
No
Source
USGS
Region
Celebes Sea
Felt widely; can cause minor damage to weak structures.
At 340 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 (~137 km away).
Area seismic-hazard score: 22/100 (moderate).
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.