A lava dome-like feature formed in the summit crater of Great Sitkin volcano, Alaska, suggesting magma is rising near the surface. As a result, the Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. A...
July 24, 2021
New activity/unrest was reported for 2 volcanoes from July 14 - 20, 2021. During the same period, ongoing activity was reported for 14 volcanoes. New activity/unrest: Suwanosejima, Ryukyu Islands (Japan) | Taal, Luzon (Philippines). Ongoing activity: Dukono,...
July 23, 2021
An ancient undersea volcano was discovered 280 km (175 miles) southeast of the Christmas Islands. The volcano was discovered by CSIRO’s dedicated ocean research vessel, the RV Investigator. "Previously unknown and unimagined, this volcano emerged from our...
July 22, 2021
Ash emission was observed at the Indonesian Sirung volcano, East Nusa Tenggara starting at 08:44 UTC (16:44 LT) on July 21, 2021. The last known eruption of this volcano took place in 2015, with ash rising up to 1.5 km (5 000 feet) above sea level. The best estimate...
July 21, 2021
New activity/unrest was reported for 6 volcanoes from July 7 to 13, 2021. During the same period, ongoing activity was reported for 15 volcanoes. New activity/unrest: Bagana, Bougainville (Papua New Guinea) | Krakatau, Indonesia | Pavlof, United States | Sarychev...
July 15, 2021
A new powerful paroxysmal eruptive episode (lava fountaining) took place at Etna volcano, Italy on July 14, 2021. The Aviation Color Code was raised to Red at 10:22 UTC. Estimated volcanic cloud height rose to more than 9 km (29 500 feet) above sea level at 11:43...
July 14, 2021
A major explosive eruption took place at Stromboli volcano, Italy at 13:19 UTC on July 14, 2021. Volcanic material fell back to Sciara del Fuoco and reached the Pizzo area. From a seismic point of view, this explosive event was clearly visible at all Stromboli...
July 14, 2021
The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code for Semisopochnoi volcano to Orange and the Volcano Alert Level to Watch on July 12, 2021. The decision was made due to the onset of continuous volcanic tremors and detections of explosive...
July 14, 2021
The fissure eruption in the western part of the Krýsuvík-Trölladyngja volcanic system, close to Fagradalsfjall on the Reykjanes Peninsula, Iceland, periodically continued since the start of July. Lava fountaining and overflows from the fifth vent...
July 11, 2021
A strong explosive eruption took place at Sangay volcano, Ecuador at 23:15 UTC on July 9, 2021. Volcanic ash dispersed by 06:40 UTC on July 10. According to the Washington VAAC, volcanic ash to 11 km (36 000 feet) above sea level was extending 45 km (28 miles) NE of...
July 10, 2021
New activity/unrest was reported for 6 volcanoes from June 30 to July 6, 2021. During the same period, ongoing activity was reported for 15 volcanoes. New activity/unrest: Copahue, Central Chile-Argentina border | Krakatau, Indonesia | Rincon de la Vieja, Costa Rica...
July 08, 2021
A short-lived phreatomagmatic eruption took place at Taal's Main Crater at 21:18 UTC on July 6, 2021 (05:18 LT, July 7), generating a grayish plume that rose 300 m (985 feet) before drifting southeast. On July 4, sulfur dioxide (SO2) gas emission reached an...
July 07, 2021
A large explosive eruption took place at Azerbaijani Ignatiy Stone Bank mud volcano in the Caspian Sea, about 10 km (6.2 miles) from the Umid gas field and 30 km (18 miles) from the coast, at around 17:45 UTC (21:45 LT) on Sunday, July 4, 2021. This region has...
July 05, 2021
The highest levels of volcanic sulfur dioxide or SO2 gas emission were recorded today, July 4, 2021, at an average of 22 628 tonnes/day -- representing the highest ever recorded over Taal, PHIVOLCS reports. The previous record was set on June 28, 2021, with 14 326...
July 04, 2021
Volcanic smog (vog) is a visible haze comprised of gas and an aerosol of tiny particles and acidic droplets created when sulfur dioxide (SO2) and other gases emitted from a volcano chemically interact with sunlight and atmospheric oxygen, moisture, and dust. Called...
July 03, 2021
A new powerful paroxysmal episode started at Etna's Southeast Crater, late July 1, 2021, and lasted approximately 120 minutes. This was the 5th paroxysm since June 25 and the first since June 28. Strombolian activity at the Southeast Crater resumed at 22:40 UTC...
July 02, 2021
New activity/unrest was reported for 3 volcanoes from June 23 to 29, 2021. During the same period, ongoing activity was reported for 11 volcanoes. New activity/unrest: Rincon de la Vieja, Costa Rica | Sarychev Peak, Matua Island (Russia) | Suwanosejima, Ryukyu...
July 01, 2021
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