Major magnitude 6.7 earthquake - North Atlantic Ocean, 30 km northeast of São Jorge Island, Portugal, on Tuesday, January 1, 1980 at 16:42 (GMT)
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Major magnitude 6.7 earthquake at 10 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Depth: 10.0 km
Epicenter latitude / longitude: 38.815°N / 27.78°W↗ (North Atlantic Ocean, Portugal)
Antipode: 38.815°S / 152.22°E↗
Nearest volcano: Graciosa (28 km / 17 mi)
Nearby towns and cities:
31 km (19 mi) SSE of Praia da Graciosa (pop: 836) --> See nearby quakes!
31 km (20 mi) NE of Calheta (pop: 3,770) --> See nearby quakes!
40 km (25 mi) ENE of Velas (pop: 1,980) --> See nearby quakes!
40 km (25 mi) WNW of Santa Barbara (pop: 1,270) --> See nearby quakes!
46 km (29 mi) W of Biscoitos (pop: 1,430) --> See nearby quakes!
52 km (32 mi) WNW of Angra do Heroismo (Angra do Heroísmo Municipality) (pop: 12,000) --> See nearby quakes!
62 km (39 mi) NE of Lajes (pop: 4,710) --> See nearby quakes!
63 km (39 mi) W of Praia da Vitoria (Praia da Vitória) (pop: 6,060) --> See nearby quakes!
220 km (137 mi) WNW of Ponta Delgada (pop: 20,100) --> See nearby quakes!
227 km (141 mi) WNW of Lagoa (pop: 14,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.1 x 1014 joules (197 gigawatt hours, equivalent to 1.7 x 105 tons of TNT or 10.6 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.
|6.7||10 km||Azores Islands, Portugal||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Recorded aftershocks, latest first (0 quakes)
So far, no aftershocks have been registered.