Figure 5

GOES channel 1 (0.47 µm) reflectance imagery on 3 June 2018 at approximately (a) 21:30 UTC, (b) 21:45 UTC, (c) 22:00 UTC, (d) 22:15 UTC and (e) 22:30 UTC. The orange dashed line indicates the lower reflectance due to ash near Fuego (red triangle).