Solomon Islands earthquakes

M6.4 earthquake 140 km WNW of Malango, Solomon Islands

A magnitude 6.4 earthquake struck 140 km WNW of Malango, Solomon Islands on Tue, Oct 15, 1991, 3:16 AM GMT+11 (16:16 UTC), 31 km (19 mi) below the surface.

Tandai forecastMore in Solomon Islands

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
6.4 (Ms, surface-wave), strong
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1991-10-14 16:16:57 UTC
Depth
31.3 km (19.4 mi), shallow
Epicenter
9.080° S, 158.599° E
Strongest shaking
V, moderate shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
6.4Ms, surface-waveUSGS National Earthquake Information CenterPreferred · Reviewed · 2 stations
6.57Mw, momentISC-GEM global catalogFinal · ±0.2

What happened

The USGS’s account of the effects of this earthquake.

Felt on Santa Isabel.

From the USGS event page for usp0004xts. U.S. Geological Survey text and figures are in the public domain.

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
V, moderate shaking
Peak ground acceleration
7.8% of gravity
Peak ground velocity
1.9 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from
CONSTRAINED_BY_DEPTH_PHASES

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 3.4 and up: 16 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 6.1166 km WNW of Malango, Solomon Islands · 12771 days ago · 19 km deep · 27 km away
  2. 4.9173 km WSW of Buala, Solomon Islands · 12771 days ago · 22 km deep · 43 km away
  3. 4.4131 km WNW of Malango, Solomon Islands · 12771 days ago · 33 km deep · 9 km away
  4. 3.9130 km WNW of Malango, Solomon Islands · 12771 days ago · 33 km deep · 10 km away
  5. 5.0121 km WNW of Malango, Solomon Islands · 12771 days ago · 26 km deep · 20 km away
  6. 4.8161 km WNW of Malango, Solomon Islands · 12771 days ago · 25 km deep · 30 km away
  7. 4.9111 km WNW of Malango, Solomon Islands · 12771 days ago · 34 km deep · 29 km away
  8. 5.0180 km WSW of Buala, Solomon Islands · 12771 days ago · 16 km deep · 43 km away
  9. 4.3150 km ESE of Gizo, Solomon Islands · 12771 days ago · 33 km deep · 71 km away
  10. 5.3158 km WNW of Malango, Solomon Islands · 12770 days ago · 26 km deep · 23 km away
  11. 4.3150 km WNW of Malango, Solomon Islands · 12770 days ago · 33 km deep · 14 km away
  12. 4.5149 km WNW of Malango, Solomon Islands · 12770 days ago · 33 km deep · 19 km away
  13. 4.1102 km WNW of Malango, Solomon Islands · 12770 days ago · 33 km deep · 38 km away
  14. 5.6169 km SW of Buala, Solomon Islands · 12742 days ago · 29 km deep · 32 km away
  15. 5.2111 km SW of Buala, Solomon Islands · 12741 days ago · 33 km deep · 41 km away
  16. 4.6126 km WNW of Malango, Solomon Islands · 12740 days ago · 21 km deep · 18 km away

Before

  1. 7.2155 km WNW of Malango, Solomon Islands · 12771 days ago · 23 km deep · 17 km away
  2. 5.5128 km WNW of Malango, Solomon Islands · 12789 days ago · 26 km deep · 23 km away

Earthquakes todaySolomon Islands earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0004xts (also filed as atlas19911014161659, iscgem316516). Read Thu, Oct 1, 2026, 4:52 PM UTC.