Saturday, March 11, 1933 at 9:54 AM
1933-03-11 01:54 UTC · 33.631°, -117.999°
Magnitude
6.4 mw
Major
Depth
6 km
Shallow
Energy
60.0 kilotons of TNT
Gutenberg–Richter
Coordinates
33.631°, -117.999°
Felt reports
328
“Did You Feel It?”
Tsunami
No
Source
USGS
Region
—
Can cause serious damage over larger areas.
At 6 km this was a shallow earthquake. Shallow quakes concentrate shaking near the epicentre and tend to be the most damaging.
This event sits in the Major range of the moment magnitude scale.
Nearest mapped structure: Casiguran Fault (~11564 km away). Last major event: 1968 Casiguran Earthquake (M7.3).
Area seismic-hazard score: 8/100 (low).
No other recent earthquakes nearby.
Browse all earthquakes →Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.