M6.3 earthquake hits Chile at intermediate depth, very strong shaking in Arica

– January 21, 2018

A strong earthquake registered by the CSN Chile as M6.3 hit northern Chile at 01:06 UTC on January 21, 2018 (22:06 local time, January 20). The agency is reporting a depth of 105.3 km (65.4 miles). USGS is reporting M6.3 at a depth of 110.8 km (68.8 miles); EMSC M6.4 at 110 km. The quake was preceded by M3.0 at 22:45 UTC, January 20.

According to the USGS, the epicenter was located 76.6 km (47.6 miles) S of Putre (population 0), 85.2 km (52.9 miles) ESE of Arica (population 185 999), Chile and 117.8 km (73.2 miles) SE of Tacna (population 280 098), Peru.

There are 230 000 people living within 100 km (62 miles) and less than 1 000 within 10 km (6.2 miles).

According to the USGS, some 128 000 people are estimated to have felt moderate shaking.

However, CSN Chile reports very strong shaking in Arica and in the village of Codpa. Strong shaking was reported in Cuya, Pocon Chile and Putre.

https://watchers.news

Major M7.6 earthquake hits off the coast of Honduras, small tsunami observed

A very strong and shallow earthquake registered by the USGS as M7.6 hit north of Honduras at 02:51 UTC on January 10, 2018 (20:51 local time, January 9). The agency is reporting a depth of 10 km (6.2 miles). EMSC reported M7.6 at a depth of 15 km (9 miles). Minor sea level fluctuations have been observed and may continue during the next couple of hours.

According to the USGS, the epicenter was located 201.9 km (125.5 miles) NNE of Barra Patuca (population 2 758) and 245.2 km (152.4 miles) N of Puerto Lempira (population 4 856), Honduras.

There are no people living within 100 km (62 miles).

Some 58 000 people are estimated to have felt moderate shaking and 3 318 000 light.

Minor tsunami waves have been observed (up to 30 cm / 0.98 feet) and may continue over the next few hours, PTWC said 04:48 UTC.

Ths USGS issued a green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.

https://watchers.news

Strong Earthquakes Hit San Francisco And Mount St. Helens And Experts Warn They May Be Foreshocks For ‘Something Larger’

Michael Snyder – January 4, 2018

Just when it seemed like things may be settling down, two very unusual earthquakes have hit the west coast within the past couple of days.  A 4.4 magnitude quake struck Berkeley, California just prior to 3 AM on Thursday morning, and a 3.9 magnitude earthquake hit Mount St. Helens in Washington state on Wednesday.  Overall, there have been 68 earthquakes in the vicinity of Mount St. Helens since New Year’s Day, and there have been a total of 629 earthquakes in the state of California within the last 30 days.  Could it be possible that all of this activity is leading up to a historic seismic disaster on the west coast?

The 4.4 magnitude earthquake along the Hayward fault very early on Thursday jolted people out of bed all over the San Francisco area

A strong 4.4 magnitude earthquake has rattled the Bay Area shortly before 3 a.m.

USGS is reporting the quake was centered in Berkeley. On KRON4’s real time earthquake map it shows the epicenter.

The quake struck at 2:39 a.m. and was centered near the Claremont hotel. The earthquake had a preliminary depth of 8 miles, according to USGS.

This wasn’t a soft and gentle earthquake that everyone kind of laughs about after it is over.

North Korea’s nuclear tests have damaged Earth’s crust, caused tremors months later

NZ Herald – December 11, 2017

Two tremors detected in North Korea yesterday were likely to be aftershocks from the hermit nation’s reckless nuclear test in early September, a US Geological Survey official confirmed.

The mild 2.9 and 2.4 magnitude aftershocks were confirmed as “tectonic” in origin by the Vienna-based Comprehensive Nuclear-Test-Ban Treaty executive secretary Lassina Zerbo.

The USGS official claimed the tremors originated near the Punggye-ri nuclear test site – the location where North Korea carried out its largest nuclear test to date on September 3.

The official said: “They’re probably relaxation events from the sixth nuclear test. When you have a large nuclear test, it moves the Earth’s crust around the area, and it takes a while for it to fully subside.

“We’ve had a few of them since the sixth nuclear test.”

http://www.nzherald.co.nz

Strong and shallow M6.0 earthquake near the coast of Ecuador

– December 03, 2017

A strong and shallow earthquake registered by the IGEPN as M6.0 hit near the coast of Ecuador at 11:19 UTC on December 3, 2017. The agency is reporting a depth of 39.9 km (24.8 miles). USGS is reporting M6.0 at a depth of 24.7 km (15.3 miles). EMSC reports M6.2 at a depth of 30 km (18.6 miles).

According to the USGS, the epicenter was located 20.1 km (12.5 miles) NE of Bahía de Caráquez (population 37 056), 31.6 km (19.6 miles) NW of Chone (population 44 751), 33.8 km (21 miles) N of Tosagua (population 14 680), 42.1 km (26.1 miles) NNW of Calceta (population 17 268), and 65.9 km (40.9 miles) NNE of Portoviejo (population 170 362), Ecuador.

There are 1 550 000 people living within 100 km (62 miles) and 11 000 within 10 km (6.2 miles).

40 000 people are estimated to have felt strong shaking, 230 000 moderate and 2 012 000 weak.

The USGS issued a green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.

https://watchers.news

Is the Ramapo Fault waking up? M5.1 earthquake downgraded to M4.1 quake felt from New York City to Baltimore

Strange Sounds – November 30, 2017

A M5.1 earthquake downgraded to a M4.1 (USGS) or M4.6 (EMSC) tremor hit Delaware on November 30, 2017. The quake was felt across the east coast of the United States, from New York City to Baltimore. The USGS initially reported the magnitude at 5.1. But was then downgraded to a weak M4.1 by the USGS. The quake, which hit at 4:45 p.m. Thursday was centered about 6 miles east-northeast of Dover, Delaware.

More than 6500 reports have been left by baffled witnesses on the USGS homepage. Among others, people reported house shakings for about 10 seconds, windows rattling, and loud but deep thundering noises or booms. Here some testimonies of the quake. There are no tsunami warnings or threats.

I don’t know what the USGS is trying to hide there… But well, a pretty strong earthquake (for the region) unexpectedly hit Delaware on November 30, 2017… Just a few miles away from the Ramapo fault.

http://strangesounds.org

Tsunami waves observed after 7.0 earthquake near France’s New Caledonia

RT – November 19, 2017

A magnitude 7.0 earthquake has struck in the Pacific near the overseas French territory of New Caledonia, the US Geological Survey (USGS) reports. Tsunami waves have been observed after the quake, the Pacific Tsunami Warning Center (PTWC) reports.

The quake was centered 82 km (51 miles) east-northeast of Tadine, on Mare Island, which has a population of over 5,600. The epicenter was 10 km (6 miles) deep. The numbers have been revised by USGS from earlier reports, which placed the epicenter 68 km from Tadine and 25 km deep, and reported its magnitude as 7.3.

The PTWC has warned of “hazardous tsunami waves” possible for coasts within 300 km of the epicenter, which puts the Loyalty Islands archipelago, with a population of over 17,000, within range. It later issued a message saying tsunami waves “have been observed.”

Waves up to 1 meter higher than the high-tide mark were forecast to hit New Caledonia, with the actual height varying depending on the coastline. The PTWC has warned that additional waves may roll in at intervals of five minutes to an hour, and may be higher than the initial ones.

https://www.rt.com

Huge 6.3 magnitude earthquake rocks central China

Sam Sholli – November 18, 2017

The USGS initially reported the earthquake as a 6.7 magnitude but it was later downgraded to 6.3.

The quake hit approximately 36 miles (58km) from China’s Nyingchi prefecture – an administrative division ranking below a province and above a county – which has a population of almost 200,000 people.

It hit the Tibetan area, which is one of the most seismically active spots on the planet.

The quake’s epicenter was within 150 miles (240 km) of the Indian towns of Along, Pasighat and Tezu, according to the USGS.

The 6.3 magnitude earthquake was measured 10 kilometres in depth.

No reports of any damage or injuries have emerged so far.

https://www.express.co.uk

Strong and shallow M6.2 earthquake hits Izu Islands region, Japan

– November 16, 2017

A strong and shallow earthquake registered by the JMA as M6.2 hit Izu Islands region, Japan at 09:43 UTC (18:43 JST) on November 16, 2017. The agency is reporting a depth of 20 km (12.4 miles). USGS is reporting M5.8 at a depth of 71 km (44 miles), EMSC M5.8 at a depth of 100 km (62 miles).

According to the EMSC, the epicenter was located 357 km (221 miles) S of Yokohama-shi (population 3 575 000) and 297 km (184 miles) SE of Shimoda (population 26 000), Japan.

There are about 100 people living within 100 km (62 miles). Some 22 905 000 people are estimated to have felt weak shaking, according to the USGS.

This earthquake poses no tsunami risk, JMA said.

https://watchers.news

Magnitude 6.5 earthquake strikes near Parrita, Costa Rica

SFgate – November 12, 2017

The United States Geological Survey reports a preliminary magnitude 6.5 earthquake struck near Parrita, Costa Rica on Sunday.

The quake hit at 8:28 PM local time at a depth of 10 kilometers.

There was no initial word on damage or injury resulting from the quake. More information on this earthquake is available on the USGS event page.

See the latest USGS quake alerts, report feeling earthquake activity and tour interactive fault maps in the earthquake section.

http://www.sfgate.com