the air at 12:00 GMT at an elevation of 3–3.6 km
(10–12,000 ft).
Heading: West–northwest from the eruption site.
Colour: Light, low-lying clouds of steam observed over the eruption site, together
with occasional bursts of grey to
black-coloured cloud, which rose to up to
half of the total height of the eruption plume. Above this level, the plume
was lighter in colour with a capping of white cloud
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