Paroxysm at Etna volcano on 21.05.23

Early this morning, the tremor at Mount Etna in Sicily increased sharply. Residents of Andrano, in the southwest of the volcano, reported loud explosion sounds, clanging windows, and ashfall. As the eruption progressed, it became clear that a paroxysm from the New Southeast Crater had begun. The eruption ended shortly before 12 noon. The dense clouds gave only a brief glimpse of a lava fountain. Two days before the eruption the Tremor increased and some ash puffs were visible.

Fuego paroxysm on 05.05.23

The phase of increased activity at Fuego that began yesterday escalated into a paroxysm. Volcanic ash rose to an altitude of 7600 m and drifted 200 km to the west. The ash cloud posed a danger to air traffic. Lava fountains shot several hundred metres into the air and a lava flow passed through the Ceniza Gorge, creating debris avalanches. Last, but not least, pyroclastic flows went off. They flowed through the Seca y Santa Teresa gorges to the west of the volcano. The national road RN 14 was closed and the Civil Protection CONRED ordered the evacuation of more than 1000 people from five villages near the volcano.

Shiveluch on Kamtchatka erupts

On Russia’s Kamchatka Peninsula, Shiveluch continues to be active, ejecting high rising ash clouds associated with the generation of pyroclastic flows. According to the Tokyo VAAC, volcanic ash reached an altitude of 9,500 m this morning and is spreading over a large area to the southeast of the volcano. It is very likely that further ash precipitation will occur in the village of Kljutschi, where heavy ash precipitation already occurred after the initial ignition of the volcano, covering the entire village with a brown layer of ash, causing massive problems and bringing public life to a standstill. In the meantime, it is said to be up to 20 cm thick. It must be removed from house roofs as soon as possible, because when it gets wet, the ash turns into a layer that weighs tons and can cause roofs to collapse. Since it is still winter on Kamchatka, precipitation will first fall as snow, which can be removed along with the ash. With the onset of snowmelt, however, lahars may then form on the volcano.

Mauna Loa: Eruption continues

The eruption on Hawaii’s Big Island continues, and lava flows from the northeast rift of Mauna Loa volcano. During the day yesterday, the height of the lava fountains from fissure 3 was reduced to a maximum of 25 meters. On the LiveCam, it can be seen that the lava fountains are still active today. A wall of cinders is slowly forming around the active part of fissure 3. The fountains feed a lava flow with several arms. The most advanced one was moving towards the saddle road yesterday at noon at a speed of 24 meters per hour and was still 5800 meters away from it. The slope is slowly decreasing in this area, so the lava flow will continue to slow down. At the same time, the lava front is getting wider. The USGS wrote in its last update that the lava flow will take about 2 more days to reach the saddle road. I suspect it will take even longer, but if the road is disrupted by the lava, one of the main arteries between the island’s east and west will be interrupted. Motorists will then have to take a considerable detour.

New Zealand: Earthquake Mw 5,4 under Taupo

Date: 30.11.22 | Time: 10:47:59 UTC | 38.84 S ; 175.91 E | Depth: 9 km | Mw 5.4

Yesterday there was an earthquake of moment magnitude 5.4 (Ml 5.6) under the Taupo caldera in New Zealand. GeoNet published more information about it today. The earthquake manifested at 10:47:59 UCT. In New Zealand, it was 11:47 p.m., which is night-sleeping time. So also the residents of the caldera were startled out of their sleep when they were shaken hard. But it didn’t stop at one shaker, as there was minor damage as items fell off shelves and some roof pieces came crashing down from a store. There were more than 180 aftershocks, 30 of which could be felt. The strongest aftershock brought it to M 4.5.

The main earthquake was the strongest since an M 5.0 earthquake in 2019, and an increase in seismicity has been observed under Lake Taupo since May 2022. Volcanologists believe the series of earthquakes is caused by activity related to magma and hydrothermal fluids inside the volcano. This activity could continue with varying speed and intensity in the coming weeks or months.

An eruption began at Mauna Loa

An eruption began at Mauna Loa in Hawaii. Around 11:30 p.m. HST (10:30 a.m. UCT), an eruption fissure opened in the Moku’─üweoweo summit caldera. Lava is erupting from it, flooding the floor of the caldera. The activity is so far limited to the summit caldera and does not pose a threat to residents. Nevertheless, the alert status has been raised to “red.” Volcanologists emphasize that winds may blow volcanic gases and possibly fine ash and Pele’s hair. Health authorities are in close contact with the HVO and close monitoring is being done to see if any health hazard develops for humans and animals. As early as October, residents were warned to prepare for evacuations if a volcanic eruption occurred at Mauna Loa. If cracks form on the volcano’s flanks, then there is danger to residents living near the volcano. Lava at Mauna Loa is usually thin and flows quickly.

Volcano San Miguel increases activity

As reported by the government agency MDMA, the volcano San Miguel in El Salcador increased its activity over the weekend and doubled its previous ejection heights of tephra. During particularly strong eruptions, the volcanic ash rose to 1100 m above crater level. The eruptions had a VEI of 1. Nevertheless, the eruptions were described as phreatic. Volcanologists report that they are closely monitoring the volcano’s activity and watching for indications of whether there is a transition to stronger phreatomagmatic eruptions.

Mount Etna opened new Vent

Yesterday evening, Etna opened a vent at the base of the Southeast Crater cone. On the LiveCam you can see a bright spot coming from a short lava flow. According to INGV, the vent opened at 17:00 in the northeast, at an altitude of 2800m. We have observed similar events several times in the last years. Often there was a paroxysm after a few days of lava flow activity. Tremor and seismicity are so far inconspicuous, the lava seems to escape without much pressure. It is quite possible that this is the material that intruded under the crater 2 weeks ago.

Cotopaxi in Ecuador erupted volcanic ash

On Thursday morning, many astonished eyes turned in the direction of the Cotopaxi summit, because at night there must have been an ash eruption that turned the snow at the volcano’s summit gray. The volcanologists from IG go wrote in their report that it was only a small ash cloud that had risen up to 300 m above crater level. It is believed that the ash was produced in an exhalation that also emitted a lot of gas. A clue to the exhalation was provided by a weak tremor signal recorded by seismographs around 6:30 p.m. local time. Although it was only a small eruption, the activity worries the people of the region. Cotopaxi is the second highest volcano in Ecuador and one of the highest active fire mountains on Earth. The Andean volcano rises 5897 meters above sea level and its summit area is covered by a glacier. Therein also lies the greatest danger of Cotopaxi, because large eruptions could melt the ice, creating lahars. They could reach the suburbs of Quito, because the capital of Ecuador is only 50 km away from the volcano.

Shiveluch erupts volcanic ash

On Kamchatka, the Shiveluch is erupting volcanic ash. According to VAAC, it rises to an altitude of 4000 m and drifts towards the east. KVERT attests that the volcano has increased activity and indicates that the dome continues to grow. MIROVA detects moderate thermal radiation. Red glow is visible at night and incandescent debris avalanches are coming off. Activity may continue to increase, producing pyroclastic flows. The photo was taken on 19 November by Yu. Demyanchuk (KVERT).