PVMBG reported that the lava dome at Merapi slowly grew during 3-10 October and was an estimated 468,000 cubic meters, based on 19 September drone photos.
At 1631 on 14 October an eruptive event was recorded by the seismic network for four minutes and 30 seconds.
A plume rose 3 km above the summit and drifted SW, causing ashfall 30 minutes after the eruption until 1900 in areas as far as 25 km W.
A pyroclastic flow traveled down the SW flank.
The Alert Level remained at 2 (on a scale of 1-4), and residents were warned to stay outside of the 3-km exclusion zone.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)