On 3 June 2018, the Copernicus Sentinel-5P satellite measured sulphur dioxide in the plume spewing from the Fuego volcano in Guatemala. The eruption has already claimed 25 lives and injured several hundred. It is reported to be Guatemala’s deadliest such event since 1902 when the Santa Maria volcano erupted and killed thousands of people. The Fuego volcano, which is less than 40 km southwest of the capital Guatemala City, also erupted in February this year and sent ash almost 2 km high. Yesterday’s event was much bigger with ash reaching 6 km high and hot rock and gas engulfing nearby villages.