M6.1 earthquake 79 km SSE of Pangai, Tonga
A magnitude 6.1 earthquake struck 79 km SSE of Pangai, Tonga on Sat, Nov 10, 2018, 9:33 PM GMT+13 (08:33 UTC), 35 km (22 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.1 (mww), strong
- Local time
- UTC
- 2018-11-10 08:33:21 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 20.454° S, 174.008° W
- Region
- Tonga
- Strongest shaking
- IV, light shaking
- PAGER alert
- Green
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
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
- 539.0% of gravity
- Peak ground velocity
- 2.7 cm/s
- Map
- Automatic
Did you feel it?
No one has reported feeling this quake to the USGS.
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
- Reverse (thrust)
- Moment magnitude
- 6.1 Mww
- Nodal plane 1
- Strike 11°, dip 42°, rake 81°
- Nodal plane 2
- Strike 204°, dip 49°, rake 98°
- Landslide alert
- Green
- Liquefaction alert
- Green
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 8.4 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- Operator assigned
- Station coverage gap
- 84°
- Stations used
- 143
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 3.1 and up: 6 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.6Tonga · 2878 days ago · 10 km deep · 25 km away
- 4.8106 km ESE of Pangai, Tonga · 2869 days ago · 10 km deep · 66 km away
- 4.980 km ESE of Pangai, Tonga · 2861 days ago · 10 km deep · 65 km away
- 4.328 km SSW of Pangai, Tonga · 2855 days ago · 73 km deep · 67 km away
- 5.148 km SE of Pangai, Tonga · 2850 days ago · 35 km deep · 32 km away
- 4.4154 km E of ‘Ohonua, Tonga · 2831 days ago · 10 km deep · 99 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000hq85 (also filed as iscgem618238013). Read Wed, Sep 30, 2026, 6:05 PM UTC.