M4.2 earthquake 158 km W of Hihifo, Tonga
A magnitude 4.2 earthquake struck 158 km W of Hihifo, Tonga on Thu, Apr 19, 2018, 7:23 AM GMT-12 (19:23 UTC), 293 km (182 mi) below the surface.
A larger quake followed: M5.6 91 km NW 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
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-04-19 19:23:55 UTC
- Depth
- 292.7 km (181.9 mi), intermediate-depth
- Epicenter
- 15.807° S, 175.272° 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 13.8 km horizontally, 7.1 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 68°
- Stations used
- 48
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
- 4.4117 km WSW of Hihifo, Tonga · 3087 days ago · 275 km deep · 69 km away
- 5.691 km NW of Hihifo, Tonga · 3085 days ago · 10 km deep · 93 km away
- 4.0156 km NW of Hihifo, Tonga · 3058 days ago · 253 km deep · 93 km away
- 4.3148 km NW of Hihifo, Tonga · 3044 days ago · 199 km deep · 96 km away
- 4.2252 km W of Hihifo, Tonga · 3043 days ago · 396 km deep · 96 km away
- 4.5220 km W of Hihifo, Tonga · 3038 days ago · 343 km deep · 68 km away
- 4.2123 km W of Hihifo, Tonga · 3028 days ago · 249 km deep · 36 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000drzh. Read Fri, Oct 2, 2026, 1:55 PM UTC.