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Major mag. 7.4 earthquake - 255km SW of Vaini, Tonga

Major mag. 7.4 earthquake - 282km SW of Vaini, Tonga on Thursday, 23 May 2013

Major mag. 7.4 earthquake  - 282km SW of Vaini, Tonga on Thursday, 23 May 2013
23 May 17:35 UTC: First to report: USGS after 16 minutes.
Date & time: Thursday, 23 May 2013 17:19 UTC
Local time at epicenter: Fri, 24 May 2013 06:19
Magnitude: 7.4
Depth: 171.4 km
Epicenter latitude / longitude: 23.025°S / 177.1089°W (Tonga)
Nearest volcano: Unnamed 24.8°S/177.02°W (194 km / 121 mi)
Primary data source: USGS
Estimated released energy: 7.9 x 1015 joules (2206 gigawatt hours, equivalent to 1.9 x 106 tons of TNT or 118.7 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!

Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
TimeMag. / DepthLocationSource
Thu, 23 May 17:19 UTCM 7.4 / 153 km SOUTH OF FIJI ISLANDSEMSC
Thu, 23 May 17:19 UTCM 7.4 / 171.4 km282km SW of Vaini, TongaUSGS
Thu, 23 May 17:19 UTCM 7.4 / 165 kmSouth of Fiji IslandsGFZ
Thu, 23 May 17:19 UTCM 7.5 / 174 kmS of Fiji IslandsGeoAu

shake map
(shakemap: USGS)

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (modified Mercalli) scale.
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Fatai, Tonga / Moderate shaking (MMI V) : beds were certainly shaking this morning and duration was quite long approx 30secs

Aftershocks of the 7.4 quake: 282km SW of Vaini, Tonga, 23 May 2013 17h19

Show info about this
List of recorded aftershocks, latest first (95 quakes):
  • 15 May 2015 10:21 UTC
    | M 5.2 |
    164 km (101.9 mi) depth
    |
    133 km (83 mi) distance
    | GFZ | Details
  • 10 May 2015 07:17 UTC
    | M 5.1 |
    120 km (74.6 mi) depth
    |
    169 km (105 mi) distance
    | GeoAu | Details
  • 06 May 2015 12:07 UTC
    | M 5.4 |
    473 km (293.9 mi) depth
    |
    135 km (84 mi) distance
    | EMSC | Details
  • 03 Apr 2015 12:33 UTC
    | M 3.6 |
    351.2 km (218.2 mi) depth
    |
    67 km (41 mi) distance
    | GEONET (NZ) | Details
  • 03 Apr 2015 12:32 UTC
    | M 5.3 |
    10 km (6.2 mi) depth
    |
    86 km (53 mi) distance
    | EMSC | Details
  • 21 Mar 2015 16:16 UTC
    | M 5.2 |
    353 km (219.3 mi) depth
    |
    134 km (83 mi) distance
    | GFZ | Details
  • 20 Mar 2015 23:11 UTC
    | M 4.7 |
    80 km (49.7 mi) depth
    |
    174 km (108 mi) distance
    | EMSC | Details
  • 15 Mar 2015 02:17 UTC
    | M 5.5 |
    113 km (70.2 mi) depth
    |
    125 km (78 mi) distance
    | GFZ | Details
  • 08 Feb 2015 00:35 UTC
    | M 4.8 |
    609.7 km (378.8 mi) depth
    |
    215 km (133 mi) distance
    | GEONET (NZ) | Details
  • 14 Jan 2015 05:29 UTC
    | M 5.0 |
    100 km (62.1 mi) depth
    |
    164 km (102 mi) distance
    | EMSC | Details
  • 04 Jan 2015 08:39 UTC
    | M 4.9 |
    411 km (255.4 mi) depth
    |
    111 km (69 mi) distance
    | GFZ | Details
  • 01 Jan 2015 18:40 UTC
    | M 4.7 |
    116 km (72.1 mi) depth
    |
    133 km (83 mi) distance
    | EMSC | Details
  • 01 Jan 2015 15:32 UTC
    | M 4.9 |
    48.5 km (30.1 mi) depth
    |
    134 km (83 mi) distance
    | USGS | Details
  • 04 Dec 2014 18:45 UTC
    | M 5.4 |
    125 km (77.7 mi) depth
    |
    181 km (112 mi) distance
    | GFZ | Details
  • 31 Oct 2014 09:07 UTC
    | M 4.4 |
    380.8 km (236.6 mi) depth
    |
    189 km (117 mi) distance
    | USGS | Details
  • 03 Oct 2014 15:02 UTC
    | M 5.1 |
    1 km (0.6 mi) depth
    |
    73 km (45 mi) distance
    | EMSC | Details
  • Show all

Map of aftershocks

Significant earthquakes in the same area since 1900

Major mag. 7.4 earthquake - 282km SW of Vaini, Tonga on Thursday, 23 May 2013
 

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