Monday, September 30, 1991 at 8:21 AM
1991-09-30 00:21 UTC ยท -20.878ยฐ, -178.591ยฐ
Magnitude
7.0 mw
Great
Depth
566 km
Deep
Energy
476.9 kilotons of TNT
GutenbergโRichter
Coordinates
-20.878ยฐ, -178.591ยฐ
Felt reports
โ
Tsunami
No
Source
USGS
Region
โ
Can cause severe, widespread destruction and loss of life.
At 566 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 (~6646 km away). Last major event: 2012 Samar Earthquake (M7.6).
Area seismic-hazard score: 8/100 (low).
12 recorded M4.0+ events within 330 km in the 90 days after this earthquake.
No other recent earthquakes nearby.
Browse all earthquakes โData from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.