The Institute of Earth Sciences just released a map of the new lava as it was at 2 pm yesterday. The eastern boundary of the lava had then stood still for a few hours after progressing approximately 2 km (1 mile) the night before.
The lava stream from the fissure continues and therefore the lava is now thicker than before. It is expected that the edge of the lava will break and then the lava will progress forward again. This type of behavior is common in eruptions, according to the Institute's Facebook site.
The lava flow in the past 24 hours is estimated to have been 100 to 150 cubic meters per second (3,000 to 4,500 cubic feet per second), which is similar to the previous day, but about one third of what is was on day one of the eruption.
The map clearly shows how the lava is midway between Dyngjujökull outlet glacier to the south, on the northern border of Vatnajökull, and Askja to the north. Askja is one of the most powerful volcanoes in Iceland.