After over 6 months of relative calm the seismicity suggests that a new magma batch is rising and may have already reached the surface. The weather hasn't been great and a flight has been planned for a while. Now it is more urgent to see what is inside the crater. In the photo you can see the large amount of erosion in parts of the Montegrande ravine from the rains during the past weeks. The chance of a large lahar is ever increasing as the channel develops along the whole ravine within the 2015 PDC deposit.