M6.1 earthquake 137 km NNW of Neiafu, Tonga
A magnitude 6.1 earthquake struck 137 km NNW of Neiafu, Tonga on Sun, Aug 26, 2007, 12:37 AM GMT-12 (12:37 UTC), 127 km (79 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.1 (Mwc, centroid moment), strong
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2007-08-26 12:37:31 UTC
- Depth
- 127.4 km (79.2 mi), intermediate-depth
- Epicenter
- 17.457° S, 174.335° W
- Region
- Tonga
- Felt reports
- 2
- 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 |
|---|---|---|---|
| 6.1 | Mwc, centroid moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 6.06 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 6.0 | Mwc, centroid moment | Global CMT project | Preliminary |
| 6.0 | Me, energy | Choy, USGS energy magnitude | Reviewed |
What happened
The USGS’s account of the effects of this earthquake.
Felt (II) at Neiafu.
From the USGS event page for usp000fkqx. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
2 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Reverse (thrust)
- Nodal plane 1
- Strike 352°, dip 1°, rake 67°
- Nodal plane 2
- Strike 195°, dip 89°, rake 91°
How well it is located
Reviewed by a seismologist.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
- Station coverage gap
- 24°
- Stations used
- 567
Nearby
Within 100 km, magnitude 3.1 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.4129 km NW of Neiafu, Tonga · 6966 days ago · 194 km deep · 77 km away
- 5.082 km NNE of Neiafu, Tonga · 6962 days ago · 10 km deep · 77 km away
- 4.739 km NNW of Neiafu, Tonga · 6935 days ago · 10 km deep · 98 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000fkqx (also filed as us2007gmat, choy20070826123731, gcmtc200708261237a, gcmt20070826123731, iscgem12814009). Read Fri, Oct 2, 2026, 11:51 AM UTC.