Maly Semyachik volcano (Eastern Kamchatka, Russia) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 April-24 April 2018 (New Activity / Unrest)
KVERT reported that activity at Maly Semyachik increased during the second half of March; the ice covering the crater lake melted within a 5-6-day period, and a weak thermal anomaly was visible in satellite images. The Aviation Color Code was raised to Yellow (the second lowest level on a four-color scale) on 22 March. A weak thermal anomaly continued to be detected through 20 April, though no further activity prompted KVERT to lower the Aviation Color Code to Green.
Mi, 18. Apr 2018, 06:0006:00 AM | VON: VN
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
From: Global Volcanism Program, 2018. Report on Maly Semyachik. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 18 April-24 April 2018. Smithsonian Institution and US Geological Survey.