Today’s ash plume from Rinjani volcano in Indonesia
The volcano had a sudden explosive eruption this noon, it seems. An ash plume was detected at 12:20 local time (04:20 UTC) that rose from the volcano to originally estimated 32,000 ft (10 km) altitude and drifted south. 
 
Lombok’s Praya Airport was closed today from 16:55 and is expected to reopen tomorrow morning at 10:00 am. 
 
It seems likely that the ash plume, which appears not particularly dense and smaller than originally reported by Darwin VAAC, was the result of a sudden explosive event (perhaps phreatic) of the volcano whose last eruption was last year between Oct-Dec. Other causes of the ash plume are possible, too, e.g. a major collapse event inside the caldera. More details will be added as they come in.
Forecasted ash plume by Darwin VAAC
Courtesy of volcanodiscovery.com

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