M4.9 earthquake 128 km ESE of Pangai, Tonga
A magnitude 4.9 earthquake struck 128 km ESE of Pangai, Tonga on Thu, Apr 27, 2017, 2:25 AM GMT+13 (13:25 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.1 131 km ESE of Pangai, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-04-26 13:25:52 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 20.377° S, 173.284° 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 8.7 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- Operator assigned
- Station coverage gap
- 84°
- Stations used
- 49
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 6 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.9113 km ESE of Pangai, Tonga · 3446 days ago · 10 km deep · 25 km away
- 5.1131 km ESE of Pangai, Tonga · 3436 days ago · 10 km deep · 4 km away
- 4.586 km E of Pangai, Tonga · 3436 days ago · 10 km deep · 54 km away
- 4.536 km E of Pangai, Tonga · 3426 days ago · 14 km deep · 98 km away
- 4.8101 km E of Pangai, Tonga · 3412 days ago · 10 km deep · 74 km away
- 4.7128 km ENE of ‘Ohonua, Tonga · 3394 days ago · 10 km deep · 87 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10008l0n. Read Mon, Oct 5, 2026, 6:49 AM UTC.