M4.5 earthquake 233 km WNW of Pangai, Tonga
A magnitude 4.5 earthquake struck 233 km WNW of Pangai, Tonga on Sat, Apr 22, 2017, 3:35 PM GMT+13 (02:35 UTC), 76 km (47 mi) below the surface.
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
- 2017-04-22 02:35:15 UTC
- Depth
- 76.1 km (47.3 mi), intermediate-depth
- Epicenter
- 19.228° S, 176.487° W
- Region
- Tonga
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 4.5 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.09 · 36 stations |
| 4.97 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
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 5.5 km horizontally, 6.7 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 123°
- Stations used
- 42
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.2Fiji region · 3428 days ago · 274 km deep · 48 km away
- 4.0Fiji region · 3397 days ago · 462 km deep · 92 km away
- 4.1226 km NW of Nuku‘alofa, Tonga · 3389 days ago · 388 km deep · 51 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10008jqc (also filed as iscgem610547210). Read Thu, Oct 1, 2026, 6:31 AM UTC.