Strong 6.1M quake in Chile, no tsunami threat

Magnitude

6.1

Date-Time

Wednesday, November 14, 2012 at 19:02:05 UTC

Wednesday, November 14, 2012 at 04:02:05 PM at epicenter

Wednesday, November 14, 2012 at 09:02:05 AM Hawaii Standard Time

Location

29.157°S, 71.272°W

Depth

61.8 km (38.4 miles)

Region

COQUIMBO, CHILE

Distances

82 km (50 miles) N of La Serena, Chile

82 km (50 miles) SW of Vallenar, Chile

88 km (54 miles) N of Coquimbo, Chile

110 km (68 miles) NNW of Vicuna, Chile

According to the Chile National Emergency Office of the Ministry of Interior and Public Security no reports of injuries to people, disruption to basic services or infrastructure due to this earthquake. The earthquake characteristics indicate NO tsunami forming off Chile.

USGS: How large does an earthquake have to be to cause a tsunami?



Magnitudes below 6.5

Earthquakes of this magnitude are very unlikely to trigger a tsunami.

Magnitudes between 6.5 and 7.5

Earthquakes of this size do not usually produce destructive tsunamis. However, small sea level changes may be observed in the vicinity of the epicenter. Tsunamis capable of producing damage or casualties are rare in this magnitude range but have occurred due to secondary effects such as landslides or submarine slumps.

Magnitudes between 7.6 and 7.8

Earthquakes of this size may produce destructive tsunamis especially near the epicenter; at greater distances small sea level changes may be observed. Tsunamis capable of producing damage at great distances are rare in the magnitude range.

Magnitude 7.9 and greater

Destructive local tsunamis are possible near the epicenter, and significant sea level changes and damage may occur in a broader region.

Note that with a magnitude 9.0 earthquake, the probability of an aftershock with a magnitude exceeding 7.5 is not negligible. To date, the largest aftershock recorded has been magnitude 7.1 that did not produce a damaging tsunami.