Moderate mag. 5.3 earthquake - Tonga (Samoa) on Friday, 4 August 1978 at 01:17 (GMT)
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Moderate magnitude 5.3 earthquake at 33 km depth
Depth: 33.0 km
Epicenter latitude / longitude: 15.669°S / 173.046°W (Samoa)
Nearest volcano: Curacoa (67 km / 42 mi)
Nearby towns and cities:
86 km (54 mi) ENE of Hihifo (Tonga) (pop: 815) --> See nearby quakes!
227 km (141 mi) SSW of Vailoa (pop: 769) --> See nearby quakes!
231 km (144 mi) SSW of Mulifanua (pop: 4,510) --> See nearby quakes!
238 km (148 mi) SSW of Fasito‘outa (pop: 2,100) --> See nearby quakes!
243 km (151 mi) S of Asau (pop: 6,640) --> See nearby quakes!
246 km (153 mi) SSW of Apia (pop: 40,400) --> See nearby quakes!
253 km (157 mi) SW of Lufilufi (pop: 1,070) --> See nearby quakes!
256 km (159 mi) SSW of Safotu (pop: 1,210) --> See nearby quakes!
291 km (181 mi) WSW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
296 km (184 mi) WSW of Pago Pago (Ma'Oputasi, American Samoa) (pop: 11,500) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5.6 x 1012 joules (1.56 gigawatt hours, equivalent to 1344 tons of TNT) 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 5.3||33 km||Tonga (Samoa)||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 5.3 quake Tonga (Samoa) 4 August 1978 01:17 GMT
More infoRecorded aftershocks, latest first (1 quakes):
- 22 Sep 1978 14:32 UTC| M 4.7 |47 km (29.2 mi) depth|26 km (16 mi) distance| USGS | Details