Earthquakes
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Shallow magnitude 6.3 earthquake strikes South Pacific; no tsunami threat

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A magnitude 6.3 earthquake has struck the South Pacific Ocean, according to the U.S. Geological Survey (USGS). No tsunami warnings were issued.

The earthquake occurred at 12:29 a.m. UTC on Wednesday, with an epicenter located in the Pacific-Antarctic Ridge, according to USGS data. It struck at a preliminary depth of 6.2 miles (10 kilometers).

The location of the earthquake was far from any populated areas, with Waitangi in New Zealand's Chatham Islands being the closest settlement—more than 1,700 miles (2,760 kilometers) away. According to the USGS, no population was expected to have felt the tremor.

The Pacific Tsunami Warning Center (PTWC) did not issue a tsunami warning, likely because the earthquake did not have the necessary characteristics, including strength, to warrant an alert or advisory.

Seismograph

Huge magnitude 7 earthquake hits near Tonga in Pacific Ocean, tsunami warning issued - mag. 6.2 aftershock

earthquake tonga march 22025
© Social media/CSEMTonga residents were urged to get to higher ground after the 7.1m earthquake hit on March 30, 2025.
A massive earthquake has hit near Tonga, prompting fears of a tsunami for the Pacific island country.

The US Geological Survey said the 7.1 magnitude earthquake hit about 62 miles north-east of the main island in the early hours of Monday local time. Tonga's time zone is 13 hours ahead of the UK.

The Pacific Tsunami Warning Centre issued an alert saying hazardous waves could be possible for coasts located within 185 miles of the epicentre. The tsunami warning was later lifted.

Sirens were heard on Tonga and residents headed for upper ground or inland.

No reports of damage were immediately available.

Comment: The latest from social media:



The aftershocks have begun:


An aftershock of magnitude 6.2 hit about 3 hours later.


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Shallow 6.6 magnitude earthquake on the central Mid-Atlantic Ridge

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A 6.6-magnitude earthquake was reported along the Mid-Atlantic Ridge on Friday (March 28), according to the United States Geological Survey.

The earthquake was centered at a depth of 6.4 kilometers (about four miles). The USGS said it received zero reports of people having felt the earthquake at the time of publication.

The Mid-Atlantic Ridge earthquake was reported hours after a deadly 7.7-magnitude earthquake in Southeast Asia.

Comment: About 17 hours earlier in the same area: Shallow 6.1 magnitude earthquake on the central Mid-Atlantic Ridge


Seismograph

Shallow 6.1 magnitude earthquake on the central Mid-Atlantic Ridge

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6.1 magnitude earthquake

UTC time: Friday, March 28, 2025 00:34 AM
Your time: Friday 28 March 2025 at 00:34 GMT
Magnitude Type: mww
USGS page: M 6.1 - central Mid-Atlantic Ridge
USGS status: Reviewed by a seismologist
Reports from the public: 0 people

10 km depth

Comment: About 17 hours later another struck the area: Shallow 6.6 magnitude earthquake on the central Mid-Atlantic Ridge


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Coastal warning issued after shallow magnitude 6.7 quake hits off New Zealand

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People living in coastal areas have been warned to get out of the water and move away from beaches after a strong 6.7 magnitude earthquake struck off New Zealand's South Island, authorities said.

Residents of the Southland and Fiordland regions should stay away from marine areas as strong and unusual currents may present a danger, the National Emergency Management Agency said after the earthquake on Tuesday.

"People on boats, live-aboards and at marinas should leave their boats/vessels and move onto shore. Do not return to boats unless instructed by officials," the agency said.

More than 4,700 people felt the quake, government seismic monitor Geonet said, as New Zealand media reported items falling and buildings swaying.

The quake was reported at a depth of 33km (21 miles) about 160km (99 miles) northwest of Snares Islands, the northernmost of New Zealand's sub-Antarctic islands, Geonet said in an alert.

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Earthquake swarm near Adak, Alaska includes magnitude 6.2 tremor

A swarm of earthquakes have been impacting the Aleutian Islands just southeast of Adak
© Alaska's News SourceA swarm of earthquakes have been impacting the Aleutian Islands just southeast of Adak
A magnitude 6.2 earthquake struck shortly before 7 a.m. Friday morning, just 54 miles southeast of Adak.

It was one in a series of earthquakes that have occurred this week in the region, which is notorious for earthquake swarms. There was another swarm back in December of 2024.

Since Wednesday, more than a dozen earthquakes have occurred in this region, with a magnitude of 4.0 or greater. Eight earthquakes have seen a magnitude of 4.0 to 4.9, with eight others being greater than 5.0. This swarm is still showing signs of new movement in the earth, with additional earthquakes still occurring in the region.


Comment: Further south just 3 minutes earlier but also in the North Pacific: Shallow earthquake of magnitude 6.2 strikes south of Panama


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Shallow earthquake of magnitude 6.2 strikes south of Panama

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An earthquake of magnitude 6.2 struck the Pacific Ocean in south of Panama near the island of Coiba on Friday. The quake caused heavy tremors in parts of Panama and neighboring Costa Rica. However, local authorities did not immediately report any damages.

The quake occurred about 78 km (45 miles) southwest of Coiba—a national park and former penal colony—at a shallow depth of 10 km, according to the United States Geological Survey and local officials.

Watch centers across the region stated that a tsunami was not expected.

A video shared on social media showed suitcases shaking heavily for about a minute in a room in Burica, a town on the southern end of Panama's shared border with Costa Rica, approximately 123 km from the epicenter.

(With inputs from Reuters)

Comment: Just 3 minutes later also in the North Pacific another mag. 6.2 quake struck: Earthquake swarm near Adak, Alaska includes magnitude 6.2 tremor


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6.0 magnitude earthquake hits off the South Sandwich Islands

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6.0 magnitude earthquake

UTC time: Friday, March 14, 2025 23:42 PM
Your time: Friday 14 March 2025 at 23:42 GMT
Magnitude Type: mww
USGS page: M 6.0 - South Sandwich Islands region
USGS status: Reviewed by a seismologist
Reports from the public: 0 people

35 km depth

Earthquake

Earthquake hits Naples: 'Whole city is awoken by huge roar'

earthquake naples
© Alessandro Garofola/LaPress/ShuRubble falls from buildings crushed a vehicle below, after the powerful quake hit the Naples area March 13, 2025
City is rocked by strongest quake in 40 years, sending people rushing into the streets

Naples has been rocked by a 4.4-magnitude earthquake, the strongest to hit the area in the last 40 years.

The tremors were preceded by a 'huge roar', local media reports, sending people running into the streets at around 1.25am. The powerful quake lasted about 20 seconds and awoke the entire city and large parts of the surrounding region.

The epicentre was recorded at a depth of 2.5 kilometers beneath the municipality of Pozzuoli, a city along the coast from Naples, according to the National Institute of Geophysics and Volcanology (INGV).

It triggered a seismic swarm which saw a series of less powerful tremors shake the city for two more hours as panicked residents huddled in the street.

Comment: Activity near Naples continues:




Seismograph

Shallow 6.5 magnitude earthquake strikes Jan Mayen island in Arctic Ocean

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A magnitude 6.6 earthquake took place in the Jan Mayen Island Region. The depth was 10km, according to USGS.

On March 10 (02:33:14 (UTC), a powerful earthquake of magnitude 6.5 occurred in the Jan Mayen Island region, impacting Svalbard and Jan Mayen, a Norwegian volcanic island in the Arctic Ocean. The United States Geological Survey (USGS) later revised the magnitude to 6.5.

The U.S. National Tsunami Warning Center announced on X/Twitter:
"Tsunami Info Stmt: M6.6 Jan Mayen Island Region 2233EDT Mar 9: Tsunami NOT expected; U.S. Atlantic or Gulf Coast."
According to the official news release on tsunami.gov, "There is no tsunami danger for the U.S. east coast, the Gulf of Mexico states, or the eastern coast of Canada." The statement added, "Based on earthquake information and historic tsunami records, the earthquake is not expected to generate a tsunami."