Fig. 8

A Cumulative ashfall hazard map color-coding areas by the likelihood of ashfall exceeding a given threshold (see inset matrix for details) for a forecast 24 h after eruption. The blue lines show the contour of the 0.01 mm deposition for a single ensemble member. B Probability of cumulative ashfall exceeding 0.01 mm, for a forecast 24 h after eruption. The red line shows the median (50%) probability. C Propagation in time of the median probability of ashfall exceeding 0.01 mm in one-hour steps for a forecast 24 h after eruption. Most ash falls within 9 h after eruption