M6.0 earthquake 187 km SSW of ‘Ohonua, Tonga
A magnitude 6.0 earthquake struck 187 km SSW of ‘Ohonua, Tonga on Sun, May 25, 2025, 11:49 PM GMT+13 (10:49 UTC), 48 km (30 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.0 (Mww, W-phase moment), strong
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2025-05-25 10:49:59 UTC
- Depth
- 48.0 km (29.8 mi), shallow
- Epicenter
- 22.837° S, 175.802° W
- Region
- Tonga
- Felt reports
- 5
- Strongest shaking
- IV, light shaking
- PAGER alert
- Green
- 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 |
|---|---|---|---|
| 6.0 | Mww, W-phase moment | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.069 · 20 stations |
| 6.1 | Mi | NOAA Pacific Tsunami Warning Center | First automatic solution · Reviewed · 6 stations |
| 6.0 | Mwc, centroid moment | USGS National Earthquake Information Center | Moment tensor · Reviewed |
| 6.0 | Mwb, body-wave moment | USGS National Earthquake Information Center | Moment tensor · Reviewed |
| 6.0 | Mww, W-phase moment | USGS, automatic first solution | First automatic solution · Confirmed |
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- IV, light shaking
- Peak ground acceleration
- 1.0% of gravity
- Peak ground velocity
- 0.9 cm/s
- Map
- Automatic
Did you feel it?
5 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.
Estimated impact
The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.
- Alert level
- Green: little or no damage or loss of life expected
| Range | Chance |
|---|---|
| Under 1 | 65% |
| 1 to 10 | 30% |
| 10 to 100 | 4% |
| 100 to 1,000 | Under 1% |
| 1,000 to 10,000 | Under 1% |
| 10,000 to 100,000 | Under 1% |
| 100,000 to 10,000,000 | Under 1% |
| Range, million USD | Chance |
|---|---|
| Under 1 | 65% |
| 1 to 10 | 30% |
| 10 to 100 | 4% |
| 100 to 1,000 | Under 1% |
| 1,000 to 10,000 | Under 1% |
| 10,000 to 100,000 | Under 1% |
| 100,000 to 10,000,000 | Under 1% |
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Strike-slip
- Moment magnitude
- 6.0 Mww
- Nodal plane 1
- Strike 60°, dip 84°, rake 174°
- Nodal plane 2
- Strike 150°, dip 84°, rake 6°
- Landslide alert
- Green
- Liquefaction alert
- Green
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 9.6 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- From modeling of broad-band P waveforms
- Station coverage gap
- 22°
- Stations used
- 216
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 3.0 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 5.2131 km SSW of Houma, Tonga · 493 days ago · 79 km deep · 70 km away
- 4.7192 km S of ‘Ohonua, Tonga · 475 days ago · 10 km deep · 91 km away
- 4.3191 km S of ‘Ohonua, Tonga · 475 days ago · 10 km deep · 64 km away
- 4.9207 km S of ‘Ohonua, Tonga · 475 days ago · 10 km deep · 72 km away
- 4.7168 km SSW of ‘Ohonua, Tonga · 475 days ago · 10 km deep · 50 km away
- 5.1141 km S of ‘Ohonua, Tonga · 459 days ago · 10 km deep · 97 km away
- 4.8127 km S of ‘Ohonua, Tonga · 457 days ago · 10 km deep · 85 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000q1e7 (also filed as usauto7000q1e7, pt25145000). Read Mon, Oct 5, 2026, 4:16 AM UTC.