M4.9 earthquake 102 km NNE of Hihifo, Tonga
A magnitude 4.9 earthquake struck 102 km NNE of Hihifo, Tonga on Wed, Jul 17, 2019, 11:09 PM GMT+13 (10:09 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.7 94 km NE 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
- 4.9 (mb), light
- Local time
- UTC
- 2019-07-17 10:09:19 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 15.136° S, 173.345° W
- Region
- Tonga
- Felt reports
- 3
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
3 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 8.4 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- Operator assigned
- Station coverage gap
- 63°
- Stations used
- 36
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 7 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.664 km NNW of Hihifo, Tonga · 2629 days ago · 10 km deep · 77 km away
- 4.896 km ENE of Hihifo, Tonga · 2622 days ago · 10 km deep · 68 km away
- 4.6100 km NNE of Hihifo, Tonga · 2614 days ago · 10 km deep · 3 km away
- 4.746 km NNE of Hihifo, Tonga · 2602 days ago · 89 km deep · 59 km away
- 4.398 km NNE of Hihifo, Tonga · 2593 days ago · 10 km deep · 22 km away
- 4.575 km NNW of Hihifo, Tonga · 2576 days ago · 63 km deep · 66 km away
- 5.794 km NE of Hihifo, Tonga · 2573 days ago · 10 km deep · 31 km away
Before
- 4.551 km NE of Hihifo, Tonga · 2635 days ago · 35 km deep · 53 km away
- 4.955 km NW of Hihifo, Tonga · 2637 days ago · 107 km deep · 92 km away
- 5.3134 km NNE of Hihifo, Tonga · 2644 days ago · 10 km deep · 40 km away
- 4.5137 km N of Hihifo, Tonga · 2656 days ago · 10 km deep · 50 km away
- 4.571 km N of Hihifo, Tonga · 2662 days ago · 35 km deep · 59 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us70004m4y (also filed as iscgem616064249). Read Wed, Sep 30, 2026, 4:53 AM UTC.