M4.5 earthquake 148 km WNW of Pangai, Tonga
A magnitude 4.5 earthquake struck 148 km WNW of Pangai, Tonga on Wed, Aug 22, 2018, 1:08 PM GMT+13 (00:08 UTC), 208 km (129 mi) below the surface.
A larger quake followed: M4.9 157 km W of Pangai, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-08-22 00:08:33 UTC
- Depth
- 207.6 km (129.0 mi), intermediate-depth
- Epicenter
- 19.456° S, 175.714° 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 14.6 km horizontally, 9.1 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 93°
- Stations used
- 24
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.7Tonga · 2960 days ago · 216 km deep · 74 km away
- 4.9157 km W of Pangai, Tonga · 2950 days ago · 10 km deep · 31 km away
- 4.4100 km WNW of Pangai, Tonga · 2944 days ago · 207 km deep · 48 km away
- 4.1154 km W of Neiafu, Tonga · 2938 days ago · 149 km deep · 85 km away
- 4.9144 km NW of Pangai, Tonga · 2906 days ago · 10 km deep · 59 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000h60n. Read Fri, Oct 2, 2026, 2:23 AM UTC.