Roundup of Global Volcanic Activity – New Activity for the Week 22 July 2020 – 28 July 2020

Copahue | Central Chile-Argentina border : SERNAGEOMIN and SEGEMAR reported that elevated seismicity (continuous tremor) at Copahue was recorded on 16 July and accompanied by ash emissions observed by local residents. Sulfur dioxide emissions were anomalous on 4, 6, and 20 July; values were 2,100 and 1,713 tons per day on 2 and 4 July, respectively, on the high end of normal values. On 20 July residents of La Araucanía described an odor indicating hydrogen sulfide gas emissions. On 23 July the Alert Level was raised to Yellow (the second lowest level on a four-colour scale). ONEMI raised a Yellow Alert (the middle level on a three-colour scale) for residents of the Alto Biobío municipality and access to an area within 1 km of El Agrio Crater was restricted to the public.

Nishinoshima | Japan : Based on satellite data, the Tokyo VAAC reported that during 22-28 July ash plumes from Nishinoshima rose to 2.4-5.2 km (8,000-17,000 ft) a.s.l. and drifted in multiple directions.

Turrialba | Costa Rica : OVSICORI-UNA reported that during 22-23 July white steam plumes from Turrialba contained a minor amount of ash on one occasion.

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