M4.2 earthquake 196 km WNW of Hihifo, Tonga
A magnitude 4.2 earthquake struck 196 km WNW of Hihifo, Tonga on Sat, Mar 24, 2018, 3:45 AM GMT-12 (15:45 UTC), 94 km (59 mi) below the surface.
A larger quake followed: M4.4 168 km S of Mata-Utu, Wallis and Futuna. 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
- 2018-03-24 15:45:05 UTC
- Depth
- 94.4 km (58.7 mi), intermediate-depth
- Epicenter
- 15.009° S, 175.348° 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 8.8 km horizontally, 6.8 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 67°
- Stations used
- 56
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.2109 km WNW of Hihifo, Tonga · 3102 days ago · 276 km deep · 88 km away
- 4.4168 km S of Mata-Utu, Wallis and Futuna · 3097 days ago · 306 km deep · 64 km away
- 4.2158 km W of Hihifo, Tonga · 3088 days ago · 293 km deep · 89 km away
- 4.0156 km NW of Hihifo, Tonga · 3058 days ago · 253 km deep · 47 km away
Before
- 4.8234 km S of Mata-Utu, Wallis and Futuna · 3122 days ago · 10 km deep · 78 km away
- 4.5132 km NW of Hihifo, Tonga · 3139 days ago · 251 km deep · 67 km away
- 4.7139 km WNW of Hihifo, Tonga · 3142 days ago · 254 km deep · 79 km away
- 4.7231 km S of Mata-Utu, Wallis and Futuna · 3142 days ago · 10 km deep · 77 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000dau2. Read Fri, Oct 2, 2026, 8:03 PM UTC.