M4.9 earthquake 46 km SW of Pangai, Tonga
A magnitude 4.9 earthquake struck 46 km SW of Pangai, Tonga on Fri, Apr 21, 2023, 2:55 AM GMT+13 (13:55 UTC), 80 km (50 mi) below the surface.
A larger quake followed: M5.1 63 km NNE of Kolonga, 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
- 2023-04-20 13:55:54 UTC
- Depth
- 80.2 km (49.9 mi), intermediate-depth
- Epicenter
- 20.076° S, 174.705° 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 8.3 km horizontally, 5.8 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 69°
- Stations used
- 43
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 0 in the 30 days before it.
After
- 4.456 km SSW of Pangai, Tonga · 1259 days ago · 68 km deep · 29 km away
- 4.553 km NW of Fangale’ounga, Tonga · 1246 days ago · 155 km deep · 75 km away
- 5.163 km NNE of Kolonga, Tonga · 1243 days ago · 55 km deep · 60 km away · felt by 5
- 4.371 km N of Nuku‘alofa, Tonga · 1237 days ago · 76 km deep · 67 km away
- 4.7Tonga · 1233 days ago · 149 km deep · 77 km away
- 4.666 km WSW of Pangai, Tonga · 1210 days ago · 105 km deep · 22 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000k5se. Read Fri, Oct 2, 2026, 1:42 PM UTC.