M4.5 earthquake 280 km WNW of Houma, Tonga
A magnitude 4.5 earthquake struck 280 km WNW of Houma, Tonga on Mon, Sep 21, 2026, 4:33 AM GMT+13 (15:33 UTC), 513 km (319 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
- 4.5 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2026-09-20 15:33:50 UTC
- Depth
- 513.3 km (319.0 mi), deep
- Epicenter
- 20.373° S, 177.862° 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 14.3 km horizontally, 7.2 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 101°
- Stations used
- 44
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 since this one and 5 in the 30 days before it.
After
- 4.7Fiji region · 5 days ago · 573 km deep · 75 km away
- 4.3248 km W of Houma, Tonga · 37 hr ago · 434 km deep · 100 km away
Before
- 4.1256 km WNW of Houma, Tonga · 16 days ago · 423 km deep · 25 km away
- 4.6Fiji region · 24 days ago · 502 km deep · 44 km away
- 5.0Fiji region · 32 days ago · 536 km deep · 30 km away
- 4.9265 km WNW of Houma, Tonga · 36 days ago · 519 km deep · 16 km away
- 4.4278 km NW of Houma, Tonga · 40 days ago · 541 km deep · 85 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000tis4. Read Sat, Oct 3, 2026, 8:05 AM UTC.