M4.9 earthquake 144 km NW of Pangai, Tonga
A magnitude 4.9 earthquake struck 144 km NW of Pangai, Tonga on Thu, Oct 18, 2018, 1:11 PM GMT+13 (00:11 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.0 149 km W 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
- 4.9 (mb), light
- Local time
- UTC
- 2018-10-18 00:11:11 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 18.998° S, 175.424° 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 14.1 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- Operator assigned
- Station coverage gap
- 116°
- Stations used
- 47
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.1190 km WNW of Pangai, Tonga · 2898 days ago · 238 km deep · 83 km away
- 5.0149 km W of Neiafu, Tonga · 2876 days ago · 199 km deep · 39 km away
- 4.0152 km WNW of Pangai, Tonga · 2875 days ago · 258 km deep · 55 km away
- 4.5214 km NW of Pangai, Tonga · 2846 days ago · 288 km deep · 73 km away
- 4.3125 km W of Neiafu, Tonga · 2845 days ago · 250 km deep · 38 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000hdpi (also filed as iscgem613507650). Read Sun, Sep 27, 2026, 10:38 PM UTC.