IMO has visual confirmation via scientists in the field and via webcam that a A fissure eruption (hraungos / sprungugos) has started north of Dyngjujökull (Holuhraun). Based on webcams and seismic data the eruption started at 00:02 (29/8/14).
No volcanic ash has been detected with the radar system at the moment. The wind field condition in the area are wind blowing toward NW at 12 m/s at 5 km altitude. Seismic eruption tremor is low indicating effusive eruption without significant explosive activity.
Satellite infrared images (Seviri 3,9 micron) confirm thermal anomaly at 00:38.
The color code at Bárðarbunga has been changed to red.
The eruption is visible on MÍLA webcams:
http://www.livefromiceland.is/webcams/bardarbunga/ and http://www.livefromiceland.is/webcams/bardarbunga-2/