Category Archives: Tsunamis

Thursday briefing: How ​global ​preparedness ​prevented a ​tsunami ​tragedy

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In today’s newsletter: Years of preparation and global coordination ensured communities from Japan to Hawaii were not caught off guard

Good morning. Yesterday one of the most powerful earthquakes ever recorded hit a sparsely populated region in far east Russia.

It triggered a tsunami that started crossing the ocean at hundreds of miles an hour. What followed was a race against time – early warning systems went into alert mode as waves fanned out towards the coastlines of Japan, Hawaii and the US west coast.

Travel | The head of the UK’s air traffic control company is facing calls to resign after hundreds of flights were delayed when the system went down for about 20 minutes on Wednesday.

Israel-Gaza war | A British-Israeli woman who was held hostage by Hamas for more than 15 months has accused Keir Starmer of “moral failure” after he set the UK on course to recognise a Palestinian state. Emily Damari, 29, who was released in January, said the prime minister was “not standing on the right side of history” and should be ashamed.

UK news | The co-founder of Palestine Action can bring a legal challenge to the home secretary’s decision to ban the direct action group under anti-terrorism laws, a high court judge has ruled.

Environment | Ethnic minorities and people living in the most deprived areas of England are at increased risk of dying due to excess heat, according to new research.

Technology | Five million extra online age checks a day are being carried out in the UK since the Online Safety Act introduced age-gating for pornography sites, according to new data from the Age Verification Providers Association.

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No, Oprah Winfrey didn’t block access to a road in Hawaii amid tsunami warning evacuations

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After Wednesday’s 8.8 magnitude quake, false claims spread online that Winfrey refused to let the public use a private road in Maui – and not for the first time

Even as the threat of a tsunami swamping Hawaii had passed on Wednesday, social media posts were still circulating claims that Oprah Winfrey had refused immediate access to a private road that would allow residents a shorter evacuation route.

The warnings followed one of the century’s most powerful earthquakes, an 8.8 magnitude quake that struck off a Russian peninsula and generated tsunami warnings and advisories for a wide swath of the Pacific. Posts on X and TikTok contended Winfrey refused to open her private road, or was slow to do so during the evacuation.

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Hawaii tsunami warning downgraded and no major damage after first waves hit islands

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Powerful 8.8-magnitude earthquake off Russia triggers tsunami alerts across Pacific including for US coast and Japan

A major tsunami is not expected to strike Hawaii, a Pacific monitoring agency has said, after the first waves hit the islands after a powerful magnitude-8.8 earthquake that struck off Russia’s eastern coast.

The Pacific Tsunami Warning Center, operated by the US National Weather Service, said in an update that “based on all available data”, a major tsunami was not expected, although it warned all coasts could remain “a hazard to swimmers and boaters”, including people near the shore.

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Powerful earthquake could raise Pacific north-west sea levels ‘dramatically’ – study

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Likelihood of potentially devastating quake above 8.0 magnitude in next 50 years is 15%, study states

A massive earthquake in the Pacific north-west could rapidly transform areas of the coast from northern California to Washington, causing swaths of land to quickly sink, “dramatically” raising sea level and increasing the flood risk to communities.

That’s according to a new study, published in the Proceedings of the National Academy of Sciences, examining the potential impact of the “big one”, a powerful quake along the Cascadia fault that stretches from Canada to California.

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Ceremonies held across Asia to mark 20 years since Boxing Day tsunami

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Waves towering up to 30 metres killed more than 220,000 people in 15 countries in deadliest tsunami in history

Ceremonies have been held in countries across Asia to remember the more than 220,000 people who were killed two decades ago in the Indian Ocean tsunami, the most deadly tsunami in history.

On 26 December 2004, a 9.1-magnitude earthquake struck Indonesia’s Sumatra island, triggering huge waves that slammed into coastal communities across the Indian Ocean. The waves, which towered as high as 30 metres, killed 227,899 people across 15 countries.

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Earthquake strikes off Japan’s coast and triggers tsunami warning

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No immediate signs of damage reported after powerful quake hits off eastern coast of Kyushu

A powerful earthquake struck off Japan’s southern coast on Thursday, triggering a tsunami advisory, the Japan Meteorological Agency (JMA) said, but there were no immediate signs of major damage.



The Japan Meteorological Agency said the quake registered a preliminary magnitude of 7.1 and was centred off the eastern coast of Japan’s southern main island of Kyushu at a depth of about 30km (18.6 miles).

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Taiwan earthquake: nine dead and 900 injured as buildings collapse

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Dozens believed trapped and awaiting rescue after island hit by 7.2-magnitude quake, its strongest in 25 years

Taiwan’s strongest earthquake in 25 years has killed nine people and injured at least 900, causing building collapses, power outages and landslides on the island, and triggering initial tsunami warnings in southern Japan and the Philippines.

The fire agency said 64 people were trapped in one coalmine, and six in another, while rescue workers had lost contact with 50 people who were travelling in minibuses through a national park as the earthquake wiped out phone networks.

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Japan orders people to evacuate after 7.6-magnitude quake hits west coast

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Major tsunami warnings downgraded but residents in coastal areas told not to return to homes

A powerful earthquake has struck central Japan’s western coastline, triggering waves over a metre high and prompting tsunami alerts and warnings for people to evacuate.

The quake, which is estimated to have been magnitude 7.6, struck the Noto peninsula in Ishikawa prefecture on the main central island of Honshu at about 4.10pm local time (07.10 GMT). It knocked out power to tens of thousands of homes and disrupted flights and rail services.

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Marseille, Alexandria and Istanbul prepare for Mediterranean tsunami

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Risk of significant tsunami within next 30 years is nearly 100%, Unesco says, as it urges coastal cities to become ‘tsunami-ready’

A tsunami could soon hit major cities on or near the Mediterranean Sea including Marseille, Alexandria and Istanbul, with a nearly 100% chance of a wave reaching more than a metre high in the next 30 years, according to Unesco.

The risk of a tsunami in Mediterranean coastal communities is predicted to soar as sea levels rise. While communities in the Pacific and Indian Ocean, where most tsunamis occur, were often aware of the dangers, it was underestimated in other coastal regions, including the Mediterranean, Unesco said.

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A mega-tsunami in the Pacific north-west? It could be worse than predicted, study says

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Scientists find the size of the ‘outer wedge’ of a faultline can magnify a rupture’s impact, worrying news for a fault running from Vancouver Island to northern California

Scientists have long predicted a giant 9.0-magnitude earthquake that reverberates out from the Pacific north-west’s Cascadia fault and quickly triggers colossal waves barreling to shore.

But what if these predictions were missing an important piece of information – one that, in certain scenarios, could tell an even more extreme story?

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‘Absolutely amazing’: Tongan man swept away by tsunami stayed afloat for 24 hours

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Lisala Folau climbed a tree on his home island before being washed away and eventually managing to reach the capital

The story of a Tongan man washed away by the tsunami and who drifted and swam between islands for more than 24 hours has become one of the first to emerge from the island nation, five days after the disaster cut off communications between it and the rest of the world.

Lisala Folau, a retired disabled carpenter, told Tongan radio station Broadcom FM that he swam and floated from his island of Atata via two other uninhabited islands to eventually reach the main island of Tongatapu, a total distance of around 13 kilometres.

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Tonga says volcanic eruption and tsunami an ‘unprecedented disaster’

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Government issues first official update since huge blast on Saturday, saying death toll could rise

Tonga is facing an “unprecedented disaster” from a massive volcanic eruption that covered the nation in ash and 15-metre tsunami waves that destroyed almost all the homes on two small islands, the government has said.

Hampered by a communications breakdown caused by the severing of a major undersea cable, authorities had not released an official update since the blast on Saturday, when the Pacific island nation was shaken by what may have been the largest volcanic event in three decades.

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How the Tonga volcano has been felt around the world – video

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A large underwater volcano in Tonga has sent huge swells around the world affecting countries bordering the Pacific Ocean. The tsunami waves caused damage to boats as far away as New Zealand and large swells were seen in California and Japan but did not appear to cause any widespread damage. Two people have drowned off a beach in northern Peru, local authorities say, after unusually high waves were recorded in several coastal areas

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Pacific tsunami damage unclear as volcano ash blankets Tonga

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Conditions hinder communications and surveillance of towns believed to have been inundated by waves

A thick blanket of ash from a huge undersea volcanic eruption has covered the Pacific Island nation of Tonga, contaminating water supplies, cutting off communications and preventing surveillance flights assessing the extent of damage from tsunami waves that are believed to have inundated entire towns.

Videos shared on social media after Saturday night’s eruption showed people running for higher ground as the metre-high floods hit coastal areas and made their way inland while the sky darkened with ash. A sonic boom could be heard as far away as Alaska.

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Tsunami-hit Tonga faces communication challenges, says Jacinda Ardern – video

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The prime minister of New Zealand told a news conference on Sunday that contact had not been established with coastal areas beyond the capital, Nuku’alofa, after a tsunami hit Tonga following an underwater volcanic eruption. 

Ardern said the main undersea communications cable was affected, probably due to loss of power. She added that power was being restored in some areas on the islands and local mobile phones were slowly starting to work. The New Zealand high commission in Nuku’alofa said the tsunami had damaged boats, shops and other infrastructure.

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Australia live news update: Novak Djokovic federal court decision expected today; ‘difficult three weeks’ ahead for NSW amid Covid surge

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Government argues Serbian tennis star has become ‘icon’ for anti-vax groups as federal court adjourns; Victoria records 13 Covid-19 deaths and 28,128 new cases; Perrottet warns of ‘difficult three weeks’ as NSW records 20 deaths and 34,660 new cases; Queensland records three deaths and 17,445 new cases; ACT records two deaths and 1,316 cases. Follow all the day’s news here

In further Australian Covid news, the Morrison government has announced $24m in new funding to widen the use of telehealth for GPs and other specialists. The funding is a direct reaction to the infection rate from the Omicron outbreak. AAP reports:

The $24m will also cover the continued supply of personal protective equipment, such as masks, respirators, face shields and gowns for face-to-face consultations including patients that have tested positive through a rapid antigen test.

The latter aligns with national cabinet’s January 5 decision that RAT tests no longer need to be confirmed by a PCR test.

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Tsunami from Tonga volcano eruption leaves trail of flood damage

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Waves rush over island country while tidal surges are felt by small Pacific neighbours, New Zealand, Australia and US

Tsunami waves caused by an undersea volcano have flooded the Pacific Island country of Tonga, where entire towns have been inundated with water and scientists warn the main island could be blanketed in volcanic ash.

Videos shared on social media after the eruption showed people running for higher ground as the one metre high floods hit coastal areas and made their way farther inland while the sky darkened with ash.

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Tsunami hits Tonga after underwater volcanic eruption

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Streets and buildings flooded in Pacific nation’s main island following latest eruption of Hunga Tonga-Hunga Ha’apai

People have been forced to flee their homes, and streets and buildings have flooded, as tsunami waves crashed into Tonga’s main island of Tongatapu, following a huge underwater volcano explosion.

The eruption at 0410 GMT on Friday of the Hunga Tonga-Hunga Ha’apai underwater volcano, located about 65km (40 miles) north of Tonga’s capital, Nuku’alofa, caused a 1.2-metre tsunami, Australia’s Bureau of Meteorology said.

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‘Volcanic eruptions are like cats’: the La Palma volcano explained

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The ongoing eruption in the Canary Islands has raised concerns over cancelled holidays and a potential tsunami. Here a volcanologist weighs the risks

On 19 September, after 50 years of magmatic quiescence, the Cumbre Vieja volcano on the Spanish island of La Palma roared back to life. Ash speckled the sky, and molten rock cooking at 1,075C (1,967F) oozed from several fresh fissures and cascaded down the volcano’s western flanks in the form of hadean rivers, ploughing through houses and farms with insouciance. Fortunately, thanks to the work of local scientists and emergency services, thousands of people were evacuated ahead of time, and no deaths have yet been reported.

So, what happens next? What new threats will emerge from the volcano? How long will this go on for? And why would anyone want to live in the shadow of such a menacing volcano in the first place?

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Ancient tsunami could have wiped out Scottish cities today, study finds

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Research maps the extent of the catastrophic Storegga tsunami 8,200 years ago for the first time

Towns and cities across Scotland would be devastated if the country’s coastline was hit by a tsunami of the kind that happened 8,200 years ago, according to an academics’ study.

While about 370 miles of Scotland’s northern and eastern coastline were affected when the Storegga tsunami struck, the study suggests a modern-day disaster of the same magnitude would have worse consequences.

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