M4.4 earthquake 133 km NW of Neiafu, Tonga
A magnitude 4.4 earthquake struck 133 km NW of Neiafu, Tonga on Sun, May 21, 2017, 11:54 AM GMT+13 (22:54 UTC), 222 km (138 mi) below the surface.
A larger quake followed: M4.7 84 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
- 4.4 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-05-20 22:54:41 UTC
- Depth
- 221.9 km (137.9 mi), intermediate-depth
- Epicenter
- 17.878° S, 174.951° 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 9.5 km horizontally, 6.1 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 75°
- Stations used
- 46
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.784 km NW of Neiafu, Tonga · 3399 days ago · 10 km deep · 58 km away
- 4.3197 km SW of Hihifo, Tonga · 3397 days ago · 230 km deep · 86 km away
- 4.2156 km NNW of Neiafu, Tonga · 3392 days ago · 240 km deep · 53 km away
- 4.4156 km WNW of Neiafu, Tonga · 3392 days ago · 211 km deep · 45 km away
- 4.1173 km NW of Neiafu, Tonga · 3367 days ago · 242 km deep · 56 km away
- 4.5139 km NNW of Neiafu, Tonga · 3365 days ago · 80 km deep · 79 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10008txj. Read Fri, Oct 2, 2026, 7:14 AM UTC.