On 9 September IMO raised the Aviation Color Code for Askja to Yellow, noting that inflation that began in early August was ongoing and notably rapid. The uplift was centered at the W edge of Oskjuvatn caldera, which rose a total of 7 cm. The data suggested that magma was accumulating at 2-3.5 km depth.
Source: Icelandic Meteorological Office (IMO)
Syndicated from Smithsonian / USGS Weekly Volcanic Activity Report