Moderate mag. 4.8 earthquake - South Pacific Ocean, 225 km southwest of Apia, Tuamasaga, Samoa, on Monday, 11 September 1978 at 06:05 (GMT)
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Moderate magnitude 4.8 earthquake at 33 km depth
Date & time: 11 Sep 1978 06:05:24 UTC
Depth: 33.0 km
Epicenter latitude / longitude: 15.228°S / 173.284°W (South Pacific Ocean, Samoa)
Nearest volcano: West Mata (52 km / 32 mi)
Nearby towns and cities:
195 km (121 mi) SSW of Vailoa (pop: 769) --> See nearby quakes!
202 km (126 mi) SSW of Asau (pop: 6,640) --> See nearby quakes!
205 km (128 mi) SW of Mulifanua (pop: 4,510) --> See nearby quakes!
219 km (136 mi) SSW of Safotu (pop: 1,210) --> See nearby quakes!
222 km (138 mi) SW of Afega (Malie) (pop: 1,900) --> See nearby quakes!
225 km (140 mi) SW of Apia (pop: 40,400) --> See nearby quakes!
236 km (146 mi) SW of Lufilufi (pop: 1,070) --> See nearby quakes!
293 km (182 mi) WSW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
297 km (185 mi) WSW of Pago Pago (Ma'Oputasi, American Samoa) (pop: 11,500) --> See nearby quakes!
379 km (236 mi) SE of Mata-Utu (Hahake, Wallis & Futuna) (pop: 1,200) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1 x 1012 joules (278 megawatt hours, equivalent to 239 tons of TNT) More info
Data for the same earthquake reported by different agencies
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|M 4.8||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.