M4.4 earthquake 166 km SE of Hihifo, Tonga
A magnitude 4.4 earthquake struck 166 km SE of Hihifo, Tonga on Mon, Apr 21, 2008, 8:26 AM GMT-11 (19:26 UTC), 27 km (17 mi) below the surface.
A larger quake followed: M5.4 125 km NE 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
- 4.4 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2008-04-21 19:26:21 UTC
- Depth
- 27.2 km (16.9 mi), shallow
- Epicenter
- 17.035° S, 172.708° W
- Region
- Tonga
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
no people dead or missing; no people injured; no buildings damaged or destroyed
From the USGS event page for usp000g4gu. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- FROM_LOCATION
- Station coverage gap
- 145°
- Stations used
- 13
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.4125 km NE of Neiafu, Tonga · 6719 days ago · 39 km deep · 99 km away
- 4.4211 km SE of Hihifo, Tonga · 6715 days ago · 35 km deep · 49 km away
- 4.7134 km NNE of Neiafu, Tonga · 6712 days ago · 35 km deep · 91 km away
- 4.593 km SE of Hihifo, Tonga · 6681 days ago · 35 km deep · 73 km away
- 4.574 km SE of Hihifo, Tonga · 6681 days ago · 35 km deep · 93 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000g4gu. Read Sat, Oct 3, 2026, 4:16 PM UTC.