Light mag. 4.7 earthquake - South Pacific Ocean, 231 km southwest of Apia, Tuamasaga, Samoa, on Friday, 22 September 1978 at 14:32 (GMT)
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Light magnitude 4.7 earthquake at 47 km depth
Date & time: 22 Sep 1978 14:32:32 UTC
Depth: 47.0 km
Epicenter latitude / longitude: 15.447°S / 173.122°W (South Pacific Ocean, Samoa)
Nearest volcano: Curacoa (62 km / 39 mi)
Nearby towns and cities:
208 km (129 mi) SSW of Vailoa (pop: 769) --> See nearby quakes!
214 km (133 mi) SSW of Mulifanua (pop: 4,510) --> See nearby quakes!
221 km (137 mi) SSW of Asau (pop: 6,640) --> See nearby quakes!
229 km (142 mi) SW of Afega (Malie) (pop: 1,900) --> See nearby quakes!
231 km (144 mi) SW of Apia (pop: 40,400) --> See nearby quakes!
235 km (146 mi) SSW of Safotu (pop: 1,210) --> See nearby quakes!
240 km (149 mi) SW of Lufilufi (pop: 1,070) --> See nearby quakes!
286 km (178 mi) WSW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
291 km (181 mi) WSW of Pago Pago (Ma'Oputasi, American Samoa) (pop: 11,500) --> See nearby quakes!
408 km (253 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: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 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 4.7||47 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.