M4.5 earthquake 150 km WNW of Hihifo, Tonga
A magnitude 4.5 earthquake struck 150 km WNW of Hihifo, Tonga on Thu, Sep 13, 2018, 6:38 AM GMT-12 (18:38 UTC), 247 km (153 mi) below the surface.
A larger quake followed: M4.9 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
- 2018-09-13 18:38:23 UTC
- Depth
- 246.7 km (153.3 mi), intermediate-depth
- Epicenter
- 15.633° S, 175.161° 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 10.7 km horizontally, 6.5 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 62°
- Stations used
- 61
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.9Tonga · 2931 days ago · 10 km deep · 18 km away
- 4.4211 km W of Hihifo, Tonga · 2927 days ago · 340 km deep · 62 km away
- 4.3208 km W of Hihifo, Tonga · 2923 days ago · 339 km deep · 82 km away
- 4.3150 km WSW of Hihifo, Tonga · 2919 days ago · 332 km deep · 85 km away
- 4.480 km WSW of Hihifo, Tonga · 2906 days ago · 108 km deep · 85 km away
- 4.5115 km WNW of Hihifo, Tonga · 2897 days ago · 262 km deep · 39 km away
- 4.4142 km WNW of Hihifo, Tonga · 2890 days ago · 317 km deep · 17 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000hi5p. Read Fri, Oct 2, 2026, 8:51 PM UTC.