- South Pacific Ocean, 254 km southwest of Apia, Tuamasaga, Samoa, on Friday, 20 July 2001 at 00:21 (GMT)
Quake Data | Interactive map | User Reports | Aftershocks | Earlier quakes in same area | Vaisigano | Aiga-i-le-Tai | Gagaifomauga | A'ana | Tuamasaga | Atua | Western District | Eastern District | Uvéa
Moderate magnitude 5.4 earthquake at 40 km depth
Depth: 40.0 km
Epicenter latitude / longitude: 15.167°S / 173.687°W (South Pacific Ocean, Samoa)
Nearest volcano: West Mata (10 km / 6 mi)
Nearby towns and cities:
215 km (134 mi) SSW of Asau (pop: 6,640) --> See nearby quakes!
232 km (144 mi) SW of Mulifanua (pop: 4,510) --> See nearby quakes!
236 km (147 mi) SW of Safotu (pop: 1,210) --> See nearby quakes!
241 km (150 mi) SW of Fasito‘outa (pop: 2,100) --> See nearby quakes!
254 km (158 mi) SW of Apia (pop: 40,400) --> See nearby quakes!
267 km (166 mi) WSW of Lufilufi (pop: 1,070) --> See nearby quakes!
332 km (206 mi) WSW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
336 km (209 mi) WSW of Pago Pago (Ma'Oputasi, American Samoa) (pop: 11,500) --> See nearby quakes!
340 km (212 mi) SE of Mata-Utu (Hahake, Wallis & Futuna) (pop: 1,200) --> See nearby quakes!
589 km (366 mi) NW of Alofi (Niue) (pop: 624) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.9 x 1012 joules (2.21 gigawatt hours, equivalent to 1898 tons of TNT or 0.1 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 5.4||40 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.
be the first to report it!There are no user reports for this quake yet. If you felt it
More infoRecorded aftershocks, latest first (2 quakes):
- 22 Aug 2001 17:01 UTC| M 4.4 |33 km (20.5 mi) depth|8 km (5 mi) distance| USGS | Details
- 11 Aug 2001 03:45 UTC| M 4.7 |62.5 km (38.8 mi) depth|7 km (5 mi) distance| USGS | Details