Thursday, April 22, 1948 at 4:22 AM
1948-04-21 20:22 UTC · 19.260°, -69.716°
Magnitude
7.1 mw
Great
Depth
15 km
Shallow
Energy
747.2 kilotons of TNT
Gutenberg–Richter
Coordinates
19.260°, -69.716°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause severe, widespread destruction and loss of life.
At 15 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 Great range of the moment magnitude scale.
Nearest mapped structure: Manila Trench (~15559 km away). Last major event: 1934 Manila Trench Earthquake.
Area seismic-hazard score: 8/100 (low).
2 recorded M4.0+ events within 335 km in the 90 days after this earthquake.
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.