M4.1 earthquake 198 km WNW of Pangai, Tonga
A magnitude 4.1 earthquake struck 198 km WNW of Pangai, Tonga on Thu, Jul 30, 2020, 7:36 AM GMT+13 (18:36 UTC), 273 km (170 mi) below the surface.
A larger quake followed: M4.8 130 km WNW 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
- 4.1 (mb), light
- Local time
- UTC
- 2020-07-29 18:36:31 UTC
- Depth
- 273.0 km (169.7 mi), intermediate-depth
- Epicenter
- 19.061° S, 176.069° 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 19.7 km horizontally, 9.7 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 200°, poorly surrounded by stations
- Stations used
- 21
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.3134 km WNW of Pangai, Tonga · 2218 days ago · 224 km deep · 70 km away
- 4.8130 km WNW of Pangai, Tonga · 2215 days ago · 207 km deep · 74 km away
- 4.3142 km NW of Pangai, Tonga · 2204 days ago · 172 km deep · 75 km away
- 4.1138 km WNW of Pangai, Tonga · 2197 days ago · 494 km deep · 65 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000b98d. Read Tue, Sep 29, 2026, 12:37 AM UTC.