M5.5 earthquake 32 km NNE of Neiafu, Tonga
A magnitude 5.5 earthquake struck 32 km NNE of Neiafu, Tonga on Wed, May 30, 2007, 4:50 AM GMT+13 (15:50 UTC), 2 km (1 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (Mwc, centroid moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2007-05-29 15:50:50 UTC
- Depth
- 1.5 km (0.9 mi), shallow
- Epicenter
- 18.372° S, 173.885° W
- Region
- Tonga
- 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 |
|---|---|---|---|
| 5.5 | Mwc, centroid moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.5 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 5.5 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
no people dead or missing; no people injured; no buildings damaged or destroyed
From the USGS event page for usp000fd08. 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.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Strike-slip
- Nodal plane 1
- Strike 307°, dip 3°, rake -156°
- Nodal plane 2
- Strike 193°, dip 89°, rake -87°
How well it is located
Reviewed by a seismologist.
- Station coverage gap
- 76°
- Stations used
- 148
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.2103 km NW of Neiafu, Tonga · 7053 days ago · 20 km deep · 92 km away
- 4.560 km E of Neiafu, Tonga · 7047 days ago · 10 km deep · 61 km away
- 4.891 km NW of Neiafu, Tonga · 7029 days ago · 60 km deep · 82 km away
- 4.5116 km NE of Neiafu, Tonga · 7029 days ago · 10 km deep · 86 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000fd08 (also filed as gcmtc200705291550a, gcmt20070529155050, iscgem12665735). Read Sat, Oct 3, 2026, 2:03 PM UTC.