M5.1 earthquake 133 km ESE of Pangai, Tonga
A magnitude 5.1 earthquake struck 133 km ESE of Pangai, Tonga on Sun, Jul 21, 2019, 4:16 AM GMT+13 (15:16 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
- 5.1 (Mww, W-phase moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2019-07-20 15:16:29 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 20.279° S, 173.174° 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 |
|---|---|---|---|
| 5.1 | Mww, W-phase moment | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.073 · 18 stations |
| 5.2 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
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
- Reverse (thrust)
- Moment magnitude
- 5.1 Mww
- Nodal plane 1
- Strike 19°, dip 40°, rake 100°
- Nodal plane 2
- Strike 186°, dip 50°, rake 82°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 11.0 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- Operator assigned
- Station coverage gap
- 111°
- Stations used
- 32
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 4 in the 60 days after this one and 5 in the 30 days before it.
After
- 5.0125 km ESE of Pangai, Tonga · 2626 days ago · 10 km deep · 12 km away
- 4.9130 km E of Pangai, Tonga · 2601 days ago · 10 km deep · 44 km away
- 4.1117 km SSE of Pangai, Tonga · 2576 days ago · 10 km deep · 74 km away
- 4.5134 km ENE of Pangai, Tonga · 2574 days ago · 10 km deep · 80 km away
Before
- 4.8110 km SE of Pangai, Tonga · 2631 days ago · 10 km deep · 41 km away
- 4.987 km ESE of Pangai, Tonga · 2635 days ago · 10 km deep · 48 km away
- 5.195 km SSE of Pangai, Tonga · 2647 days ago · 10 km deep · 80 km away
- 4.9126 km SE of Pangai, Tonga · 2650 days ago · 10 km deep · 49 km away
- 5.2108 km SSE of Pangai, Tonga · 2654 days ago · 10 km deep · 92 km away · felt by 1
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us70004pp5 (also filed as iscgem618632586). Read Sat, Oct 3, 2026, 12:03 AM UTC.