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Earthquakes

Seismograph

6.2-magnitude earthquake hits Kermadec Islands region

earthquake graph
© Phil McCarten / Reuters
An earthquake with a magnitude of 6.2 jolted Kermadec Islands region at 06:20:32 GMT on Wednesday, the U.S. Geological Survey said.

The epicenter, with a depth of 26.12 km, was initially determined to be at 29.0707 degrees south latitude and 176.8993 degrees west longitude.

Attention

Snow-covered Mt. Etna sends clouds of smoke into the sky - 40 quakes in a few days

Etna
Mount Etna, Europe's largest volcano, sends clouds of smoke up to the sky amid a period of intensified volcanic activity. Over the last few days, around 40 earthquakes with a 3.8 magnitude rumbled the southern flank of the mountain.


Seismograph

Shallow 6.1-magnitude earthquake jolts Aleutian Islands near Alaska

rat islands
The islands, located off southwestern Alaska, belong to the northern part of a seismically active area known as the Ring of Fire, which is regularly affected by powerful earthquakes and volcanic eruptions.

A powerful tremor hit 243 kilometres from Adak, Alaska, with the epicentre of the quake situated at a depth of 17 km, according to the United States Geological Survey (USGS).

No tsunami warning has been issued by the authorities. There also have not been any reports about victims or damages caused by the quake.

Hardhat

Strong 6.3 magnitude earthquake hits central Croatia - Second quake in 2 days - UPDATE: At least seven killed

croatia earthquake
A strong earthquake hit Croatia on Tuesday, with some injuries reported as well as considerable damages to roofs and buildings southeast of the capital.

The European Mediterranean Seismological Center said an earthquake of 6.3 magnitude hit 46 kilometers (30 miles) southeast of Zagreb. Initial reports said the earthquake caused wide damage, collapsing roofs, building facades and even some entire buildings.

The regional N1 television reported live Tuesday from the town of Petrinja, which was hard-hit in the Monday quake, that a collapsed building had fallen on a car. The footage showed firefighters trying to remove the debris from the car, which was buried underneath. The report said a man apparently was in the car when the quake hit.

The earthquake was felt throughout the country and in neighboring Serbia and Bosnia.

The same area was struck with a 5.2 quake on Monday.


Comment: Here's a report on yesterday's smaller quake in Croatia.

Earlier this year, within a few days of the West going into collective lockdown, a 5.3M quake hit Zagreb. And that was the capital's strongest tremor in 140 years...

Update: On 30.12.20 The Independent reports:
A major earthquake of magnitude 6.3 hit Croatia, killing at least seven people - including a 12-year-old girl - and causing widespread damage in a town near the capital, Zagreb.

Firefighters rescued a man and a boy trapped in a car buried in rubble in Petrinja after buildings collapsed, leaving the streets littered with fallen bricks and covered in dust.

Officials said a 12-year-old girl died in Petrinja, a town of some 25,000 people. Another six people were killed in nearly destroyed villages close to the town, according to HRT state television. At least 26 people were hospitalised, six with serious injuries, officials said, adding that many more people remained unaccounted for.

"My town has been completely destroyed. We have dead children," the town's mayor, Darinko Dumbovic, said in a statement to HRT.

"This is like Hiroshima - half of the city no longer exists. The city has been demolished, the city is no longer liveable. We need help."

The Croatian military was deployed in Petrinja to help with the rescue operation and the Croatian Red Cross described the situation as "very serious" as it dispatched crisis teams to the area.

Croatia's prime minister, Andrej Plenkovic, travelled to the town to oversee the efforts to accommodate homeless residents in local hotels and army barracks after what he described as a "devastating earthquake which was felt in many parts of Croatia".

He tweeted: "We mobilised all available services to help people and clear the destroyed parts. The most important thing now is to save human lives."

Rest of article here.

The seismic activity continues. According to Croatia Week:
Two more strong earthquakes struck Croatia on Wednesday morning, the first measuring 4.7 and the second 4.8 on the Richter scale, with the epicentre in the Petrinja area.

The first hit at 6.15 a.m. and the second a little later, the head of the Seismological Survey, Ines Ivancic, told Croatian Radio.

She said the ground "will rock for a long time. Tuesday's earthquake was devastating and will certainly be followed by a long series of earthquakes, including, quite certainly, stronger ones."

Ivancic said weaker tremors like those today would certainly affect the buildings in Petrinja and Sisak which were damaged in Tuesday's 6.2 quake, which has claimed seven lives and caused enormous damage.

Ivancic said Petrinja was struck by "an enormous quantity" of smaller earthquakes since Monday. The ground is shaking almost every minute, she said, including at least 25 to 30 tremors measuring above 3 on the Richter scale.



Seismograph

Shallow M5.7 earthquake reported off Oregon coast

Oregon earthquake map
© USGS
A 5.7-magnitude earthquake hit 150 miles off the coast of Oregon at around 7:10 a.m. GMT on Tuesday, the US Geological Survey said.

According to the organisation, the epicentre was located at a depth of 12 kilometres, at 43 degrees north latitude and 127 degrees west longitude.

There were no initial reports on damage or injury resulting from the quake. No tsunami warning has been issued so far.

Seismograph

Very shallow M5.2 earthquake hits Croatia, buildings damaged

Croatia earthquake map
© EMSC
This is the second powerful earthquake to rock the Balkan country this year. A 6.0-magnitude tremor earlier killed one, wounded several dozen others, destroyed multiple buildings in Zagreb, and left part of the capital without power.

According to the European-Mediterranean Seismological Centre, a tremor has hit 49 km southeast of the Croatian capital of Zagreb, with the epicentre located at a depth of 2 kilometres. So far, there are no official reports about any casualties or damage caused by the quake.


Seismograph

Shallow M6.8 earthquake strikes off Chile, no tsunami risk

earthquake graph
© Phil McCarten / Reuters
An earthquake of magnitude 6.8 struck off the coast of south-central Chile on Sunday, the European Mediterranean Seismological Centre (EMSC) said, but Chilean officials immediately discarded the risk of a tsunami.

There were no initial reports of damage immediately following the quake.

The strong tremor took place at a depth of 10 km (6.21 miles), EMSC said, and about 163 km (100 miles) west-northwest of Valdivia in the Pacific Ocean.

Reporting by Radhika Anilkumar in Bengaluru; writing by Dave Sherwood, Editing by Richard Chang

Seismograph

Shallow M5.5 earthquake hits eastern Turkey

Turkey quake map
© USGS
A powerful earthquake, measuring some 5.5 in magnitude, has rocked Turkey's eastern province of Elazig. The location had already been devastated by a mighty jolt early this year, with at least 41 killed and over 1,500 injured.

The earthquake shook eastern Turkey early on Sunday. According to the US Geological Survey (USGS), the tremor measured 5.5 in magnitude, its epicenter being just 10 km below the surface.

The European Mediterranean Seismological Centre (EMSC) deemed the earthquake to be even more shallow, detecting its epicenter just two kilometers below.

According to local media reports, the jolt was also felt across other eastern provinces in the country.

So far, no damage or casualties have been reported. Turkish authorities said they are assessing the situation.

Seismograph

Earthquake swarm under La Cumbre volcano, La Palma, Canary Islands

Locations and depth vs time plot of yesterday's quakes under La Palma

Locations and depth vs time plot of yesterday's quakes under La Palma
A relatively strong earthquake swarm occurred under the La Cumbre volcano on La Palma Island yesterday (24 Dec 2020).

A total of 79 small quakes of magnitudes between 1-2.2 were detected during yesterday, most of them at depths around 25-30 km under the southwestern part of the island, 15 km southeast of Los Llanos de Aridane.

Many are located under the mostly submerged volcanic ridge of Cumbre Vieja, which last erupted in 1971.
It seems that the swarm has already ended (unless more data will be released by the Spanish Geophysical Insitute later on).

Seismograph

4 earthquakes recorded in 24 hours on Mayon Volcano, Philippines

Mayon Volcano
Four earthquakes were recorded in the vicinity of Mayon Volcano in the last 24 hours as it remained under Alert Level 1 status, the Philippine Institute of Volcanology and Seismology (Phivolcs) said on Saturday.

"Mayon Volcano's monitoring network recorded four (4) volcanic earthquakes during the 24-hour observation period," state volcanologists said in a statement.

Phivolcs, likewise, noted that there is "moderate emission of white steam-laden plumes that crept downslope" on the volcano.

Phivolcs also reminded residents living near the volcano to be vigilant because it is still at abnormal condition.