M4.5 earthquake 73 km SSE of Hihifo, Tonga
A magnitude 4.5 earthquake struck 73 km SSE of Hihifo, Tonga on Thu, Aug 1, 2019, 3:42 PM GMT+13 (02:42 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M4.9 77 km SW of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 2019-08-01 02:42:22 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 16.540° S, 173.468° 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 5.0 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- Operator assigned
- Station coverage gap
- 110°
- Stations used
- 39
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.247 km ESE of Hihifo, Tonga · 2604 days ago · 98 km deep · 46 km away
- 4.4109 km S of Hihifo, Tonga · 2596 days ago · 122 km deep · 56 km away
- 4.549 km SE of Hihifo, Tonga · 2570 days ago · 37 km deep · 29 km away
- 4.977 km SW of Hihifo, Tonga · 2570 days ago · 193 km deep · 91 km away
- 4.662 km S of Hihifo, Tonga · 2569 days ago · 42 km deep · 44 km away
- 4.460 km SW of Hihifo, Tonga · 2560 days ago · 72 km deep · 72 km away
- 4.573 km SW of Hihifo, Tonga · 2560 days ago · 113 km deep · 96 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us600052t1. Read Wed, Sep 30, 2026, 2:50 AM UTC.