Mauna Loa: The world’s largest active volcano erupts in Hawaii
Hawaii’s Mauna Loa, the largest active volcano on Earth, has erupted for the first time in nearly four decades.
According to the National Weather Service (NWS), the eruption on the state’s Big Island began at 11.30pm local time on Sunday at the volcano’s summit caldera, Mokuavio.
Footage from US Geological Survey (USGS) webcams shows fountains of lava spewing from long fissures at the summit and spreading across the caldera floor.
The USGS said lava flows were initially contained to the summit area and did not pose a threat to communities on the slopes, but there are fears that could change.
At 7:43 a.m. ET on Monday, the USGS said there was “no indication of any migration of the eruption into the current rift zone.”
The eruption has already triggered more than 2.5 earthquakes on the Richter scale, including one of 4.2.
The local NWS branch issued an ash fall warning, which warned that “winds may carry volcanic gas and possibly fine ash and plumes of ash falling down.”
WATCH: World’s largest active volcano erupts in Hawaii for first time in nearly 40 years
Mauna Loa, the planet’s largest active volcano, has erupted for the first time in nearly 40 years.
Footage shows the sky glowing red as a volcano erupts on Hawaii’s Big Island.
Dozens of earthquakes, some over 2.5 on the Richter scale, were triggered by the explosion.
The last eruption of Mauna Loa was in 1984.
Mauno Loa: The world’s largest active volcano has erupted for the first time in nearly 40 years
Mauna Loa, the planet’s largest active volcano, has erupted for the first time in nearly 40 years. Footage shows the sky glowing red as a volcano erupts on Hawaii’s Big Island. The National Weather Service (NWS) said the eruption began at 11:30pm local time on Sunday the 27th. Dozens of earthquakes, some over 2.5 on the Richter scale, were triggered by the explosion. The last eruption of Mauna Loa was in 1984. Click here to sign up for our newsletters.
Oliver O’Connell29 November 2022 04:50
What happens next?
Every eruption since 1843 has started at Mauna Loa’s summit. Half the time, the volcano then began to erupt from vents at lower altitudes. The other half of the time it erupted only in the summit caldera.
Scientists cannot predict when and where Mauna Loa will open new vents and erupt.
Vents are usually formed in the fissure zone of a volcano. That’s where the mountain is splitting, the rock is cracked and relatively weak, and the magma is easy to erupt.
An eruption from vents in the southwest rift zone could hit residential communities, coffee farms or coastal villages in the western part of the island. Lava can reach homes in just hours or days.
The most populous town on the west side is protected from any Mauna Loa eruption by the presence of another active volcano. The wide flanks of that volcano, Hualalai, sit between Mauna Loa’s southwest rift zone and Kailua-Kona, preventing any lava from making its way toward the coastal community.
An eruption from the northeast rift zone could send lava toward the county seat of Hilo or other towns in eastern Hawaii. Lava can take weeks or months to reach populated areas on this side of the mountain.
Scott Rowland, a geologist at the University of Hawaii at Manoa, said there was no pattern to when the eruption occurred.
“Just because the last one is in the northeast rift zone doesn’t mean the next one is in the southwest rift zone,” he said.
Oliver O’Connell29 November 2022 03:50
Why doesn’t Mauna Loa erupt like neighboring Kilauea?
Kilauea is best known for the 2018 eruption that destroyed 700 homes and sent rivers of lava across fields and into the ocean. The origin of Mauna Loya is different.
Mauna Loa’s eruptions differ from Kilauea’s because they are taller. It’s higher elevation gives it steeper slopes, allowing it to slide down its slopes faster than Kilauea.
Its enormous size allows it to accumulate more magma, leading to larger lava flows when an eruption occurs.
Frank Truesdell, a research geologist at the Hawaiian Volcano Observatory, part of the US Geological Survey, said the data suggests Mauna Loa has a larger magma reservoir than Kilauea, allowing it to hold more lava and rest longer than Kilauea. .
Oliver O’Connell29 November 2022 02:50
Seven weeks ago: The national park closes access to Mauna Loa due to increased seismic activity
In early October, national park officials closed Mauna Loa’s summit as a precautionary measure “due to elevated seismic activity.”
Reported by Shweta Sharma independent during.
Oliver O’Connell29 November 2022 01:50
Where is Mauna Loa?
Mauna Loa is one of five volcanoes that together make up the Big Island of Hawaii, the southernmost island of the Hawaiian archipelago. It’s not the tallest (that title goes to Mauna Kea) but it’s the largest and covers half of the island’s land area.
It lies immediately north of the Kilauea volcano, which is currently erupting from its summit crater. Kilauea is best known for the 2018 eruption that destroyed 700 homes and sent rivers of lava across fields and into the ocean.
Mauna Loa last erupted 38 years ago. In its written history dating back to 1843, it has erupted 33 times.
The Big Island is mostly rural and home to cattle ranches, coffee farms and beach resorts. It is about 200 miles (320 kilometers) south of Oahu, Hawaii’s most populous island, home to both the state capital Honolulu and the beach resort Waikiki.
Oliver O’Connell29 November 2022 00:50
Southwest Airlines canceled Hilo flights in wake of explosion
Southwest Airlines has canceled at least 10 flights to Hilo Airport on the Big Island as Mauna Loa continues to erupt.
The company said in a statement: “Volcanic ash advisory Southwest has adjusted our operations within Hawaii today and we will continue to reach out to update customers who have reservations on any flights affected by delays or cancellations. We have suspended operations in Hilo today, affecting a total of 10 interisland departures on the route between Honolulu and Hilo, and will make further adjustments as needed.
Customers scheduled to travel from or within Hawaii are granted a waiver to change their reservation with no changes in fares. Waiver applies to Monday and Tuesday bookings.
Airline officials are closely monitoring the situation.
Oliver O’Connell28 November 2022 23:50
A month ago: Hawaii’s Big Island gets alert as massive volcano roars
Officials warned Hawaii residents to prepare more than a month ago…
Hawaii Officials are warning residents big island The world’s largest active volcano, Mauna LoaIt is sending signals that it may explode.
Although an eruption is not imminent, scientists are alarmed by a recent spike in earthquakes at the volcano’s summit. Experts say it takes hours for lava to reach homes near the volcano, which last erupted in 1984.
Oliver O’Connell28 November 2022 22:50
Mauna Loa: What you need to know
Mauna Loa is one of five volcanoes that together make up the Big Island of Hawaii, the southernmost island of the Hawaiian archipelago.
Mauna Loa, at 13,679 feet (4,169 meters) above sea level, is Kilauea’s largest volcano, which erupted in a residential neighborhood and destroyed 700 homes in 2018. Some of its slopes are steeper than Kilauea’s, so lava flows faster when it erupts.
During the 1950 eruption, the mountain’s lava traveled 15 miles (24 kilometers) into the ocean in less than three hours.
Here’s what’s happening right now at Mauna Loa.
Oliver O’Connell28 November 2022 22:20
The eruption changes into a fissure zone
The US Geological Survey said the eruption moved into a rift zone — a place where mountain rock is cracked and relatively weak — where magma is more likely to erupt.
An eruption from the zone could send lava toward the county seat of Hilo or other towns in East Hawaii, but it could take weeks or months for the lava to reach populated areas.
“We don’t want to try and second-guess a volcano,” said Ken Hahn, scientist-in-charge of the Hawaiian Volcano Observatory. “We have to let them show us what it’s going to do and then we’ll let people know what’s happening ASAP.”
Hawaii County Civil Defense announced that the shelter was opened on its own initiative because of reports of evacuations along the coast.
The average Mauna Loa eruption is usually short-lived, lasting a couple of weeks, Mr. Hahn said.
“Typically, Mauna Loa eruptions start off massive first,” Mr Hahn said. “After a few days, it starts to calm down a little bit.”
Oliver O’Connell28 November 2022 21:50
In pictures: Lava flow in the caldera of the volcano
Oliver O’Connell28 November 2022 21:20