Moderate mag. 5.7 earthquake - Tonga on Wednesday, 28 April 2004 at 11:45 (GMT)
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Moderate magnitude 5.7 earthquake at 54 km depth
Depth: 53.6 km
Epicenter latitude / longitude: 16.494°S / 173.041°W (Tonga)
Nearest volcano: Tafahi (102 km / 63 mi)
Nearby towns and cities:
101 km (62 mi) SE of Hihifo (pop: 815) --> See nearby quakes!
260 km (161 mi) NNE of Neiafu (pop: 4,320) --> See nearby quakes!
315 km (196 mi) SSW of Mulifanua (Samoa) (pop: 4,510) --> See nearby quakes!
321 km (199 mi) SSW of Fasito‘outa (Samoa) (pop: 2,100) --> See nearby quakes!
326 km (203 mi) SSW of Apia (Samoa) (pop: 40,400) --> See nearby quakes!
334 km (207 mi) S of Asau (Samoa) (pop: 6,640) --> See nearby quakes!
346 km (215 mi) SW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
352 km (218 mi) SW of Pago Pago (Ma'Oputasi, American Samoa) (pop: 11,500) --> See nearby quakes!
395 km (245 mi) NNE of Pangai (pop: 1,740) --> See nearby quakes!
565 km (351 mi) NNE of Nuku'alofa (pop: 22,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.2 x 1013 joules (6.22 gigawatt hours, equivalent to 5351 tons of TNT or 0.3 atomic bombs!) More info
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.
|M 5.7||54 km||Tonga||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Aftershocks of the 5.7 quake Tonga 28 April 2004 11:45 GMT
More infoRecorded aftershocks, latest first (1 quakes):
- 06 May 2004 07:30 UTC| M 4.6 |15 km (9.3 mi) depth|40 km (25 mi) distance| USGS | Details