Worldwide Volcano News and Updates

Based on visual observations and analyses of satellite data, KVERT reported that during 22 February-2 March a viscous lava flow effused on the E flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. Based on video images, KVERT reported that explosions produced a gas-and-ash plume that rose to an altitude of 9 km (29,500 ft) a.s.l. on 4 March, and an ash plume rose 4 km (13,100 ft) a.s.l. and drifted 20 km SE on 6 March. Read all

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On 5 March, GeoNet reported that monitoring of the Ruapehu Crater Lake showed that temperatures at depth remained above background levels but had started a declining trend. Gas data from January and February showed emission rates of 15-25 tonnes per day of sulfur dioxide and around 650 tonnes per day carbon dioxide; these are within the usual range of emissions measured at Ruapehu. Seismicity remained low, characterized by weak volcanic tremor and some shallow earthquakes. Read all

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KVERT reported that during 22 February-1 March moderate seismic activity continued at Kizimen. Video data showed that lava continued to extrude from the summit, producing summit incandescence, strong gas-and-steam activity, and hot avalanches on the W and E flanks. Satellite images detected a daily thermal anomaly over the volcano. Read all

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During 27 February-5 March HVO reported that the circulating lava lake periodically rose and fell in the deep pit within Kilauea's Halema'uma'u Crater. The plume from the vent continued to deposit variable amounts of ash, spatter, and Pele's hair onto nearby areas. Read all

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KVERT reported that moderate seismic activity at Karymsky was detected during 22 February-1 March. Satellite imagery showed a thermal anomaly on the volcano during 21 and 25-28 February. The Aviation Color Code remained at Orange. Read all

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SVERT reported that weak steam-and-gas emissions from Snow, a volcano of Chirpoi, were observed on 25 February, and 1 and 3 March. A thermal anomaly was detected in satellite images on 28 February and 3 March. Cloud cover prevented observations of the volcano on other days during 25 February-4 March. Read all

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Based on information from JMA, the Tokyo VAAC reported that explosions from Sakura-jima during 27 February-3 March and 5 March generated ash plumes that rose to altitudes of 1.8-3.7 km (6,000-12,000 ft) a.s.l. and drifted S, SE, and E. A pilot observed an ash plume that rose to an altitude of 4.3 km (14,000 ft) a.s.l. on 28 February. Read all

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On 4 March GeoNet Data Centre reported that during the previous week a small ash cone surrounded by a small moat of water had been built in the crater that formerly contained the hot lake. Ash emissions had ceased, therefore the Aviation Colour Code was lowered to Yellow and the Volcanic Alert Level was lowered to 1 (on a scale of 0-5). Seismic tremor levels were low, possibly because of the lack of water involvement in the current activity. Read all

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IG reported that seismicity at Tungurahua increased on 28 February. The next day an increase in the number of long-period earthquakes was accompanied by small explosions, roaring, and ash emissions. At around 1600 on 1 March a plume of water vapor and gas containing small amounts of ash rose a few hundred meters above the crater and drifted WNW. Read all

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Stromboli again produced small lava overflows from the crater terrace on the afternoon of 27 February through the following night, after an interval of 10 days of normal Strombolian activity. A second episode of lava overflow started on the evening of 1 March and ceased the next afternoon. Both overflows were fed by continuous spattering from vent N2, which lies at the top of a hornito perched on the N rim of the crater terrace. Read all

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