Over the past 24 hours 4 rockfall signals, 2 long period earthquakes and 4 volcano-tectonic earthquakes have been recorded by the seismic network.
A strong signal was recorded mainly on the Long Ground seismometer at about 8pm last night - this was the result of a pyroclastic flow in the Tar River valley. Observations of ash drifting westwards after this event were made both from the ground and by satellites, but the amount of ash was quite small. An observation flight in the helicopter this morning showed that a flow had reached the old coastline at the end of the Tar River valley; it included a lot of debris from around the fumaroles in the scar left after the 3 July collapse and is thought to have come from that area. One to two millimetres of fresh ash was seen in Plymouth this afternoon deposited by this event.
Residents should continue checking Radio Montserrat in case there are sudden developments in the state of the volcano.