Recent trips to get the Doppler radar pair operational have failed. One radar is working, but the other would appear to have a severe problem. Further maintenance is required. A crater climb in June was unsuccessful and a follow up trip has been thwarted by bad weather. It should take place soon. The georeferencing for photogrammetry still needs to be carried out using GPS located points on the rim. A flight has been planned for several weeks but the usual plan is undergoing maintenance and no other one has been available

For the first time since the start of the current episode of activity in 1998, the volcano has gone quiet. It is quite strange considering how accustomed we have been to the small daily Vulcanian explosions and the effusion of lava. The activity stopped with a larger magnitude explosion in June, which destroyed a proportion of the dome. Since the seismicity has been exceptionally low with no signs of extrusion.

During May Aída Quezado paid us a visit from New Mexico Tech to carry out the installation of two new infrasound stations. One is located above Juan Barragán on the SE flank, the other near to La Lumbre on the SW flank. Each consists of an array of four sensors and will supplement the telemetred network (currently only one station of three is functioning). The data produced will be analysed as part of Aída’s PhD project.