M5.4 earthquake Solomon Islands
A magnitude 5.4 earthquake struck in the Solomon Islands on Thu, Jul 12, 1984, 2:02 PM GMT+11 (03:02 UTC), 37 km (23 mi) below the surface.
A larger quake followed: M5.5 61 km WNW of Kirakira, Solomon Islands. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.4 (Mw, moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1984-07-12 03:02:32 UTC
- Depth
- 37.1 km (23.1 mi), shallow
- Epicenter
- 10.459° S, 161.387° E
- Region
- Solomon Islands
- 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. | Scale | Computed by | Notes |
|---|---|---|---|
| 5.4 | Mw, moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.38 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 5.4 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
Felt at Honiara. CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 12S, 27C Centroid Location: Origin Time 03:02:35.0 0.5 Lat 10.38S 0.05 Lon 161.13E 0.05 Dep 56.0 4.7 Half-duration 2.0 Moment Tensor; Scale 10**24 D-CM Mrr=1.43 0.06 Mtt=-0.16 0.11 Mff=-1.27 0.14 Mrt=-0.45 0.11 Mrf=-0.04 0.10 Mtf=0.47 0.07 Principal Axes: (T) Val=1.56 Plg=74 Azm=168 (N) Val=-0.11 Plg=16 Azm=339 (P) Val=-1.44 Plg=3 Azm=69 Best Double Couple:Mo=1.5*10**24 NP1:Strike=175 Dip=45 Slip=113 NP2:Strike=325 Dip=50 Slip=69
From the USGS event page for usp00025pm. U.S. Geological Survey text and figures are in the public domain.
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 2.4 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.666 km WNW of Kirakira, Solomon Islands · 15418 days ago · 111 km deep · 17 km away
- 5.561 km WNW of Kirakira, Solomon Islands · 15414 days ago · 83 km deep · 20 km away
- 3.749 km W of Kirakira, Solomon Islands · 15412 days ago · 120 km deep · 12 km away
- 4.338 km W of Kirakira, Solomon Islands · 15370 days ago · 33 km deep · 21 km away
Before
Earthquakes todaySolomon Islands earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00025pm (also filed as gcmtb071284a, gcmt19840712030232, iscgem548829). Read Thu, Oct 1, 2026, 9:51 AM UTC.