Friday, April 21, 1939 at 12:29 PM
1939-04-21 04:29 UTC · 47.643°, 139.637°
Magnitude
7.0 mw
Great
Depth
530 km
Deep
Energy
476.9 kilotons of TNT
Gutenberg–Richter
Coordinates
47.643°, 139.637°
Felt reports
—
Tsunami
No
Source
USGS
Region
—
Can cause severe, widespread destruction and loss of life.
At 530 km this was a deep earthquake. Deep quakes are felt over very large areas but rarely cause surface damage.
This event sits in the Great range of the moment magnitude scale.
Nearest mapped structure: Manila Trench (~3394 km away). Last major event: 1934 Manila Trench Earthquake.
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.