Volcanos

Roundup of Global Volcanic Activity – New Activity for the Week 15 April 2020 – 21 April 2020

Karymsky | Eastern Kamchatka (Russia) : KVERT reported that over the past few weeks a minor amount of ash was present in Karymsky’s gas-and-steam plumes and trace ash deposits were visible on the surrounding snow. A very weak thermal anomaly was identified in satellite data on 6 April. The Tokyo VAAC reported that on 18 April an ash plume rose to 1.5 km (5,000 ft) a.s.l. and drifted SE based on satellite data and information from UHPP (Petropavlovsk-Kamchatsky Airport). The Aviation colour Code was raised to Yellow (the second lowest level on a four-colour scale) on 19 April.

Krakatau | Indonesia : PVMBG reported that during 13-19 April dense gray eruption plumes from Anak Krakatau rose as high as 50 m above the crater rim, and white plumes rose 25-100 m above the summit. Satellite data acquired on 15 April revealed new lava flows from the 10-11 April eruption covering the vent and extending the coastline W. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km-radius hazard zone from the crater.

Lokon-Empung | Sulawesi (Indonesia) : An increased number of volcanic earthquakes over a few days prompted PVMBG to issue a VONA on 15 April and raise the Aviation colour Code for Lokon-Empung to Yellow (the second lowest on a four-colour scale). The volcano Alert Level remained at 2 (on a scale of 1-4). Residents and tourists were reminded not to approach the crater within a radius of 1.5 km.

Semeru | Eastern Java (Indonesia) : PVMBG reported that the eruption at Semeru continued during 1-16 April. Eruptive events produced gray ash plumes that rose 400-600 m above the summit. Additionally, gray-to-white gas plumes from Jonggring-Seloko Crater rose 200-400 m; incandescent material was ejected 10-20 m above the crater. Incandescent lava flows traveled 500-1,000 m down the Kembar, Bang, and Kobokan drainages (on the S flank). At 0608 on 17 April a pyroclastic flow descended 2 km along the Bang drainage. Ash plumes drifted N, SE, and SW during 15-16 and 20-21 April. The Alert Level remained at 2 (on a scale of 1-4), and the public was reminded to stay outside of the general 1-km radius from the summit and 4 km on the SSE flank.

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