A volcano in northwest Costa Rica erupted on Monday, spewing an enormous column of smoke into the air in what could be its biggest outburst in years, authorities said.
The Rincon de la Vieja volcano’s nearly three-minute eruption in the early hours of the day belched a column of smoke almost two kilometers (1.2 miles) high, depositing ash on surrounding areas but causing no damage or injuries.
The volcano, whose eruption did not trigger any immediate evacuations, is situated in a national park in Guanacaste province some 200 kilometers from the capital, San Jose.
“It was a pretty energetic eruption,” said Maarten de Moor, a specialist at the Volcanological and Seismological Observatory of Costa Rica (Ovsicori).
Although the volcano has frequent outbursts — some 1,400 last year alone — this “could be the largest since the 1990s,” he added.
The National Commission for Risk Prevention and Emergency Management said it had deployed a team to evaluate the situation, and urged people not to approach the site.
Costa Rica has five active volcanos.
Courtesy of france24.com
Residents were told to evacuate from 10 neighborhoods in Goma, in the Democratic Republic of Congo, on May 27, due to the threat of another volcanic eruption and repeated earthquakes.
This footage, by Elie Kasereka, shows a long line of traffic as people leave the city.
The evacuation comes in the wake of the eruption of Mount Nyiragongo on May 22, which killed at least 32 people and prompted tens of thousands of people to flee.
The Red Cross in Africa said it was helping to reunite families after 300 children were separated from their parents in the wake of the eruption.
Courtesy of uk.news.yahoo.com
Scientists have downgraded the alert level at Great Sitkin Volcano near the Aleutian Island of Adak following an eruption Tuesday night.
The event took place at around 9 p.m. and produced an ash cloud up to 15,000 feet above sea level and impacted flights.
“The eruption itself occurred for over about a minute,” said David Fee, coordinating scientist for the Alaska Volcano Observatory. “It had a very loud, audible and low frequency sound to it. I guess a good analogy would be if you shake up a bottle and then you pop the cork and get an explosion out the top. That’s kind of what happened here.”
Following the eruption, Fee said, they issued a red alert warning for planes in the area, because there was likely a high emission of volcanic ash in the atmosphere.
“We lowered the advisory back down to orange this morning,” Fee told KUCB Wednesday morning. “And there hasn’t been much activity — I think it’s mainly just steaming since the eruption last night.”
According to Fee, the activity at Great Sitkin isn’t “normal,” but it’s also not unexpected, given some small explosions that have happened there over the past few years.
He said the volcano observatory will continue to watch closely for increased seismic activity or gas emissions that could indicate another eruption, but for now, it’s pretty quiet.
“We haven’t seen an eruption like this from Great Sitkin at least as long as I’ve been around here,” he said. “So it could quiet down or we could expect continued activity. We’ll just have to wait and see.”
This is the first significant explosion at Great Sitkin since 1974.
Courtesy of alaskapublic.org
34 earthquakes rattle Mauna Loa, world’s largest active volcano, Hawaii and scientists say eruption is possible
The Big Island of Hawaii, home to the world’s largest active volcano, Mauna Loa, was rocked by 34 earthquakes on Sunday. While most of the earthquakes were low in magnitude, and none were strong enough to cause a tsunami, scientists warned citizens that an eruption from Mauna Loa could be possible in the near future.
“While an eruption of Mauna Loa is not imminent, now is the time to revisit personal eruption plans,” said a recent press release from scientists with the Hawaiian Volcano Observatory. “Similar to preparing for hurricane season, having an eruption plan in advance helps during an emergency.”
The largest active volcano on Earth, Mauna Loa reaches a height of 13,681 feet above sea level, and 3 miles below the Central Pacific to the ocean floor. “Mauna Loa” is Hawaiian for “Long Mountain.” The volcano covers half of the island.
The Big Island of Hawaii is also home to three other active volcanoes: Kilauea, Mauna Kea and Hualalai. Kilauea has been erupting since December.
Concern from scientists stems from the rate at which deformation, or changes to the volcano’s surface, are affecting Mauna Loa, as well as its seismicity, or the frequency of earthquakes. The Big Island has had more than 744 earthquakes in the last of a magnitude 1.5 or greater in the last 30 days.
U.S. Geological Survey scientists recommended residents have response plans and a “go-bag” ready in the case of an evacuation order.
“Nowadays, people pack ‘go’ bags containing essential items in case you have to leave your house under an evacuation order,” the USGS said. “You may want to include important documents, like your birth certificate, deeds, legal papers, and medications.”
According to the Hawaiian Volcano Observatory, Mauna Loa has erupted 33 times since 1843. Its last eruption lasted from March 25 to April 15, 1984.
Courtesy of thehill.com
Mount Etna, one of the world’s most active volcanoes, belched smoke and ashes in a new eruption on Tuesday, but Italian authorities said it posed no danger to the surrounding villages.
“We’ve seen worse,” the head of the INGV National Institute for Geophysics and Vulcanology in the nearby city of Catania, Stefano Branco, told Italian news agency AGI.
Estimating that the eruption from Etna’s southeastern crater began late Tuesday afternoon, Branco insisted that the latest burst of activity was “not at all worrying”.
Nevertheless, with small stones and ashes raining down, authorities decided to close Catania’s international airport.
The emergency authorities said on their Twitter account that they were monitoring the situation closely in the three villages at the foot of the volcano — Linguaglossa, Fornazzo and Milo.
Images showed a spectacular rose-coloured plume of ashes above the snow-capped summit, but the cloud had largely dissipated by nightfall, while lava flows continued to glow.
At 3,324 metres (nearly 11,000 feet), Etna is the tallest active volcano in Europe and has erupted frequently in the past 500,000 years.
Courtesy of france24.com
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 and is moving at 10 kts in NW direction.
Courtesy of volcanodiscovery.com
Vulcanic explosion generated incandescent material that slid down along the slopes of the volcano (image: @newsandnature01/twitter)
The activity of the volcano continues at moderately high levels during the past week.
INSIVUMEH reported that a moderate-to-strong strombolian-to-vulcanian-type explosions erupted at regular intervals of 6 to 8 per hour. Plume of ash rose to an altitude of 4,700 ft (15,420 m) and extending about 10 km to the N-NE of the volcano.
A strong vulcanic explosion occurred on 28 November at 02:11 local time showering the summit cone with glowing lava bombs ejected to an approximate height of 300 m above the crater.
Courtesy of volcanodiscovery.com