Mag. 4.4 earthquake - Tonga (Samoa) on Wednesday, 22 August 2001 at 17:01 (GMT)
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Light magnitude 4.4 earthquake at 33 km depth
Depth: 33.0 km
Epicenter latitude / longitude: 15.121°S / 173.742°W (Samoa)
Nearest volcano: West Mata (2 km / 1 mi)
Nearby towns and cities:
93 km (58 mi) N of Hihifo (Tonga) (pop: 815) --> See nearby quakes!
214 km (133 mi) SSW of Asau (pop: 6,640) --> See nearby quakes!
217 km (135 mi) SW of Vailoa (pop: 769) --> See nearby quakes!
233 km (145 mi) SW of Mulifanua (pop: 4,510) --> See nearby quakes!
235 km (146 mi) SW of Safotu (pop: 1,210) --> See nearby quakes!
243 km (151 mi) SW of Fasito‘outa (pop: 2,100) --> See nearby quakes!
256 km (159 mi) SW of Apia (pop: 40,400) --> See nearby quakes!
269 km (167 mi) WSW of Lufilufi (pop: 1,070) --> See nearby quakes!
337 km (209 mi) WSW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
340 km (211 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: 2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 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 4.4||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.