M4.4 earthquake Tonga
A magnitude 4.4 earthquake struck in Tonga on Thu, Aug 30, 2018, 11:22 AM GMT+13 (22:22 UTC), 144 km (90 mi) below the surface.
A larger quake followed: M5.4 86 km SW of Hihifo, 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
- 2018-08-29 22:22:41 UTC
- Depth
- 144.2 km (89.6 mi), intermediate-depth
- Epicenter
- 16.029° S, 173.852° 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 14.2 km horizontally, 13.6 km in depth
- Magnitude uncertainty
- ±0.17
- Depth from
- From location
- Station coverage gap
- 146°
- Stations used
- 13
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.694 km NW of Hihifo, Tonga · 2955 days ago · 225 km deep · 95 km away
- 4.1101 km WNW of Hihifo, Tonga · 2953 days ago · 279 km deep · 100 km away
- 4.591 km S of Hihifo, Tonga · 2947 days ago · 95 km deep · 85 km away
- 4.767 km N of Hihifo, Tonga · 2946 days ago · 82 km deep · 76 km away
- 4.6104 km SSW of Hihifo, Tonga · 2931 days ago · 10 km deep · 95 km away
- 4.578 km S of Hihifo, Tonga · 2931 days ago · 108 km deep · 71 km away
- 4.589 km SE of Hihifo, Tonga · 2919 days ago · 35 km deep · 87 km away
- 4.480 km WSW of Hihifo, Tonga · 2906 days ago · 108 km deep · 73 km away
- 5.486 km SW of Hihifo, Tonga · 2899 days ago · 200 km deep · 76 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000h9ig. Read Fri, Oct 2, 2026, 11:11 AM UTC.