Saturday, September 28, 1957 at 10:20 PM
1957-09-28 14:20 UTC ยท -20.541ยฐ, -178.349ยฐ
Magnitude
7.4 mw
Great
Depth
587 km
Deep
Energy
1.9 megatons of TNT
GutenbergโRichter
Coordinates
-20.541ยฐ, -178.349ยฐ
Felt reports
โ
Tsunami
No
Source
USGS
Region
โ
Can cause severe, widespread destruction and loss of life.
At 587 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: Philippine Trench (~6656 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 8/100 (low).
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.