Tonga earthquakes

M4.4 earthquake 158 km NW of Neiafu, Tonga

A magnitude 4.4 earthquake struck 158 km NW of Neiafu, Tonga on Mon, Aug 5, 2019, 10:47 AM GMT+13 (21:47 UTC), 183 km (113 mi) below the surface.

A larger quake followed: M4.8 104 km WNW of Neiafu, Tonga. This one was a foreshock.

Nuku‘alofa forecastMore in Tonga

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
4.4 (mb), light
Local time
UTC
2019-08-04 21:47:32 UTC
Depth
182.6 km (113.5 mi), intermediate-depth
Epicenter
17.685° S, 175.096° 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 11.1 km horizontally, 8.6 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
73°
Stations used
26

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.288 km WNW of Neiafu, Tonga · 2612 days ago · 104 km deep · 87 km away
  2. 4.2169 km WNW of Neiafu, Tonga · 2612 days ago · 232 km deep · 77 km away
  3. 4.4177 km NW of Neiafu, Tonga · 2609 days ago · 227 km deep · 22 km away
  4. 4.2125 km NW of Neiafu, Tonga · 2599 days ago · 239 km deep · 34 km away
  5. 4.294 km W of Neiafu, Tonga · 2599 days ago · 151 km deep · 99 km away
  6. 4.6107 km WNW of Neiafu, Tonga · 2583 days ago · 246 km deep · 59 km away
  7. 4.4183 km NW of Neiafu, Tonga · 2572 days ago · 270 km deep · 27 km away
  8. 4.8104 km WNW of Neiafu, Tonga · 2568 days ago · 175 km deep · 72 km away
  9. 4.4148 km NW of Neiafu, Tonga · 2566 days ago · 195 km deep · 21 km away
  10. 4.7147 km SSW of Hihifo, Tonga · 2564 days ago · 35 km deep · 95 km away

Before

  1. 4.4176 km NW of Neiafu, Tonga · 2616 days ago · 288 km deep · 19 km away
  2. 4.5103 km NW of Neiafu, Tonga · 2617 days ago · 77 km deep · 56 km away
  3. 4.6135 km N of Neiafu, Tonga · 2630 days ago · 10 km deep · 98 km away

Earthquakes todayTonga earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us600052zb. Read Wed, Sep 30, 2026, 8:23 AM UTC.