M4.4 earthquake 110 km SSW of Hihifo, Tonga
A magnitude 4.4 earthquake struck 110 km SSW of Hihifo, Tonga on Tue, Mar 9, 2021, 3:09 AM GMT-12 (15:09 UTC), 140 km (87 mi) below the surface.
A larger quake followed: M4.6 63 km SSE 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
- 4.4 (mb), light
- Local time
- UTC
- 2021-03-09 15:09:06 UTC
- Depth
- 140.5 km (87.3 mi), intermediate-depth
- Epicenter
- 16.897° S, 174.143° 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 10.6 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 98°
- Stations used
- 20
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.663 km SSE of Hihifo, Tonga · 2030 days ago · 7 km deep · 76 km away
- 4.685 km SSW of Hihifo, Tonga · 2003 days ago · 125 km deep · 26 km away
- 4.1111 km WSW of Hihifo, Tonga · 1994 days ago · 298 km deep · 89 km away
- 4.2139 km WSW of Hihifo, Tonga · 1988 days ago · 305 km deep · 88 km away
- 4.529 km SW of Hihifo, Tonga · 1983 days ago · 10 km deep · 85 km away
- 4.588 km SW of Hihifo, Tonga · 1976 days ago · 170 km deep · 42 km away
- 4.3111 km SSW of Hihifo, Tonga · 1975 days ago · 167 km deep · 1 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000dkjk. Read Wed, Sep 30, 2026, 1:02 AM UTC.