PTWC: M7.8 earthquake shakes Chile, NO tsunami threat

PTWC: Chile M7.4 earthquake
PTWC: Chile M7.4 earthquake

IQUIQUE, Chile (AP) — A powerful 7.8-magnitude aftershock hit Chile’s far-northern coast late Wednesday night, shaking the same area where a magnitude-8.2 earthquake hit just a day before causing some damage and six deaths.

Chile’s Emergency Office and navy issues a tsunami alert and ordered a precautionary evacuation of low-lying areas on the northern coast, meaning many people could be spending another sleepless night away from their homes.

The aftershock caused buildings to shake and people to run out into the streets in the port of Iquique, which was one of the cities that saw some damage from Tuesday night’s big quake. But there were no immediate reports of new damage or injuries from the latest tremor, which was one of dozens that have followed the 8.2 quake.

The aftershock was center 14 miles (23 kilometers) south of Iquique. The USGS said the aftershock had a depth of 12 miles (20 kilometers).

It was felt across the border in southern Peru, where people in the cities of Tacna and Arequipa reportedly fled buildings in fear.

Authorities reported just six deaths from the 8.2-magnitude quake. It was possible others could have been killed in older structures made of adobe in remote communities that weren’t immediately accessible, but it was still a very low toll for such a powerful shift in the undersea fault that runs along the length of South America’s Pacific coast.

Chile is one of the world’s most seismic countries and is particularly prone to tsunamis, because of the way the Nazca tectonic plate plunges beneath the South American plate, pushing the towering Andes cordillera ever higher.


Tsunami Information Statement Number 2
Nws Pacific Tsunami Warning Center Ewa Beach Hi
5:16 p.m. HST Wed Apr 02 2014

The earthquake magnitude is increased to 7.8.

To – Civil Defense In The State Of Hawaii

Subject – Tsunami Information Statement

This statement is for information only. No action is required.

An earthquake has occurred with these preliminary parameters

  • Origin Time – 04:43 p.m. HST 02 Apr 2014
  • Coordinates – 20.4 South 70.1 West
  • Location – Off the coast of northern Chile
  • Magnitude – 7.8 Moment

Evaluation:

The Pacific Tsunami Warning Center has issued a non-expanding regional tsunami warning for a part of the Pacific near the earthquake. Based on all available data there is no destructive tsunami threat to Hawaii.

This will be the final statement issued for this event unless additional information becomes available.


Tsunami Information Statement Number 1
NWS Pacific Tsunami Warning Center Ewa Beach HI
4:52 p.m. HST Wed Apr 02 2014

To – Civil Defense in the State of Hawaii

Subject – Tsunami Information Statement

This statement is for information only. No action required.

An earthquake has occurred with these preliminary parameters

  • Origin time – 04:43 p.m. HST 02 Apr 2014
  • Coordinates – 20.5 South 70.4 West
  • Location – Off the coast of northern Chile
  • Magnitude – 7.4 Moment

Evaluation:

Based on all available data a destructive Pacific-wide tsunami is not expected and there is no tsunami threat to Hawaii. Repeat. A destructive Pacific-wide tsunami is not expected and there is no tsunami threat to Hawaii.

This will be the only statement issued for this event unless additional data are received.

USGS information: M7.8 – 23km S of Iquique, Chile

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