M4.1 earthquake 256 km WNW of Houma, Tonga
A magnitude 4.1 earthquake struck 256 km WNW of Houma, Tonga on Fri, Sep 18, 2026, 8:22 AM GMT+13 (19:22 UTC), 423 km (263 mi) below the surface.
A larger quake followed: M4.7 Fiji region. 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2026-09-17 19:22:37 UTC
- Depth
- 422.7 km (262.6 mi), deep
- Epicenter
- 20.372° S, 177.618° 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. If you felt it, tell the USGS: every report sharpens the shaking map.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 13.6 km horizontally, 7.6 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 98°
- Stations used
- 41
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 since this one and 5 in the 30 days before it.
After
- 4.5280 km WNW of Houma, Tonga · 13 days ago · 513 km deep · 25 km away
- 4.7Fiji region · 5 days ago · 573 km deep · 98 km away
- 4.3248 km W of Houma, Tonga · 37 hr ago · 434 km deep · 98 km away
Before
- 4.6Fiji region · 24 days ago · 502 km deep · 64 km away
- 5.0Fiji region · 32 days ago · 536 km deep · 54 km away
- 4.9265 km WNW of Houma, Tonga · 36 days ago · 519 km deep · 11 km away
- 4.4278 km NW of Houma, Tonga · 40 days ago · 541 km deep · 76 km away
- 4.2280 km WNW of Houma, Tonga · 45 days ago · 506 km deep · 31 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000tiwb. Read Sat, Oct 3, 2026, 8:23 AM UTC.