M4.3 earthquake 133 km W of Neiafu, Tonga
A magnitude 4.3 earthquake struck 133 km W of Neiafu, Tonga on Tue, May 21, 2019, 12:17 PM GMT+13 (23:17 UTC), 237 km (147 mi) below the surface.
A larger quake followed: M4.5 128 km NW of Neiafu, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 2019-05-20 23:17:36 UTC
- Depth
- 236.5 km (147.0 mi), intermediate-depth
- Epicenter
- 18.632° S, 175.249° W
- Region
- Tonga
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 11.5 km horizontally, 13.2 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 101°
- Stations used
- 33
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.5128 km NW of Neiafu, Tonga · 2684 days ago · 167 km deep · 74 km away
- 4.464 km WSW of Neiafu, Tonga · 2639 days ago · 55 km deep · 80 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us60003t66. Read Tue, Sep 29, 2026, 3:46 PM UTC.