Water level has risen to 84 cm
Travellers currently in Þórsmörk are instructed to remain where they are.
Aircraft en route over the south of the country have reported steam plumes rising up to 5,000 ft over Eyjafjallajökull glacier. A coastguard aircraft is currently flying over the area with geophysicists on board. More detailed information is expected shortly.
The police in Hvolsvöllur have allowed farmers to enter the area around the glacier so that they can tend to their livestock; however they are required to notify the authorities of their movements in and out of the restricted zone.
Air traffic control has received two reports from commercial aircraft of steam plumes rising from the glacier. The plumes, which were small, extended 1000 ft above the cloud base. These are similar in size to the plumes that were seen above Fimmvörðuháls volcano during its recent eruption.
An aircraft from the coastguard is scheduled to overfly the area at 08.00 this morning in the hope of getting a view of the surface of the glacier. Although tremors can be felt throughout the area, the glacier remains covered in cloud and it has been impossible to visually confirm volcanic activity from the ground.
Reports indicate that the water level in Markarfljót at Markarfljótsbrúnna has risen by 60 cm and a similar increase is reported at Krossá.