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.
Data from USGS. Magnitudes and locations are preliminary and may be revised. For official information consult PHIVOLCS / USGS.