Android | iOS version

Jump to: Quake Data | User Reports | Aftershocks | Earlier quakes in same area

Date & time: Sunday, 27 January 2013 09:59 UTC
Local time at epicenter: Sun, 27 Jan 2013 22:59
Magnitude: 5.7
Depth: 8.6 km
Epicenter latitude / longitude: 16.1052°S / 173.24°W (Tonga)
Nearest volcano: Tafahi (56 km / 35 mi)
Nearby towns and cities:
62 km SE de Hihifo (pop: 800)
Primary data source: USGS
Estimated released energy: 2.2 x 10¹³ joules (6.22 gigawatt hours, equivalent to 5351 tons of TNT or 0.3 atomic bombs!) [learn more]

If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

(shakemap: USGS)

There are no user reports for this quake yet. If you felt it or were nearby when it occurred, be the first to report it!

Show info about this

Based on its magnitude, the fault that was active during the quake ruptured along a surface of approx. 50 km² (=19 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 12 km (8 mi).
Aftershocks typically occur during the days and weeks following the quake at or near the same fault, at distances of up to approx. two times the length of the rupture zone.
The often broadly linear arrangement of aftershock epicenters encompasses the rupture zone of the main shock (check on the map below to verify).

Please wait while we search through millions of records.
This can take up to 20-30 seconds.

Click here to search our database for earlier earthquakes in the same area since 1900!