M5.7 earthquake 50 km NW of Neiafu, Tonga
A magnitude 5.7 earthquake struck 50 km NW of Neiafu, Tonga on Mon, Aug 5, 2019, 10:01 PM GMT+13 (09:01 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.7 (mww), moderate
- Local time
- UTC
- 2019-08-05 09:01:00 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 18.379° S, 174.373° 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
- 4.4% of gravity
- Peak ground velocity
- 1.1 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
- 5.7 Mww
- Nodal plane 1
- Strike 311°, dip 32°, rake 76°
- Nodal plane 2
- Strike 147°, dip 59°, rake 98°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 9.1 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- Operator assigned
- Station coverage gap
- 48°
- Stations used
- 73
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.7 and up: 9 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.288 km WNW of Neiafu, Tonga · 2612 days ago · 104 km deep · 43 km away
- 4.662 km NNW of Neiafu, Tonga · 2612 days ago · 10 km deep · 37 km away
- 4.735 km NW of Neiafu, Tonga · 2612 days ago · 51 km deep · 17 km away
- 4.2125 km NW of Neiafu, Tonga · 2599 days ago · 239 km deep · 75 km away
- 4.294 km W of Neiafu, Tonga · 2598 days ago · 151 km deep · 56 km away
- 4.742 km NNW of Neiafu, Tonga · 2597 days ago · 10 km deep · 26 km away
- 4.6107 km WNW of Neiafu, Tonga · 2582 days ago · 246 km deep · 57 km away
- 4.8104 km WNW of Neiafu, Tonga · 2568 days ago · 175 km deep · 57 km away
- 4.4148 km NW of Neiafu, Tonga · 2566 days ago · 195 km deep · 98 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us600050rn (also filed as iscgem616203802). Read Wed, Sep 30, 2026, 2:05 AM UTC.