Moderate mag. 5.1 earthquake - Tonga (Samoa) on Tuesday, 21 June 1983 at 11:36 (GMT)

Moderate mag. 5.1 earthquake - Tonga (Samoa) on Tuesday, 21 June 1983 at 11:36 (GMT)

Moderate magnitude 5.1 earthquake at 33 km depth

Date & time: 21 Jun 1983 11:36:57 UTC
Magnitude: 5.1
Depth: 33.0 km
Epicenter latitude / longitude: 15.433°S / 173.415°W (Samoa)
Nearest volcano: Curacoa (34 km / 21 mi)
Nearby towns and cities:
71 km (44 mi) NE of Hihifo (Tonga) (pop: 815) --> See nearby quakes!
221 km (138 mi) SSW of Vailoa (pop: 769) --> See nearby quakes!
229 km (142 mi) SSW of Asau (pop: 6,640) --> See nearby quakes!
232 km (144 mi) SW of Mulifanua (pop: 4,510) --> See nearby quakes!
240 km (149 mi) SW of Fasito‘outa (pop: 2,100) --> See nearby quakes!
246 km (153 mi) SSW of Safotu (pop: 1,210) --> See nearby quakes!
251 km (156 mi) SW of Apia (pop: 40,400) --> See nearby quakes!
261 km (162 mi) SW of Lufilufi (pop: 1,070) --> See nearby quakes!
314 km (195 mi) WSW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
319 km (198 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: 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 tons of TNT) More info
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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.
MagnitudeDepthLocationSource
M 5.133 kmTonga (Samoa)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Aftershocks of the 5.1 quake Tonga (Samoa) 21 June 1983 11:36 GMT

More info
Recorded aftershocks, latest first (0 quakes):
So far, no aftershocks have been registered.
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Earlier earthquakes in the same area

Moderate mag. 5.1 earthquake - Tonga (Samoa) on Tuesday, 21 June 1983 at 11:36 (GMT)
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