Thursday, April 10, 2003 at 3:58 AM
2003-04-09 19:58 UTC · 17.801°, 120.941°
Magnitude
4.1 mb
Moderate
Depth
74 km
Intermediate
Energy
21 tons of TNT
Gutenberg–Richter
Coordinates
17.801°, 120.941°
Felt reports
—
Tsunami
No
Source
USGS
Region
Luzon
Felt widely; can cause minor damage to weak structures.
At 74 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 Moderate range of the moment magnitude scale.
Nearest mapped structure: Casiguran Fault (~183 km away). Last major event: 1968 Casiguran Earthquake (M7.3).
Area seismic-hazard score: 21/100 (low).
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.