The level of seismic activity remained low throughout the night. Only one earthquake was detected and located, continuing the trend of low seismicity observed during the past three (3) days. The single earthquake occurred at around 05:21am this morning and was located in the Windy Hill seismic zone at a depth of about 3.5km. This volcano tectonic event had a magnitude of about 1.5 and was recorded by all the stations of the network.
A possible mudflow in Fort Ghaut was recorded by the Gages seismograph at around 22:40 on December 10, 1995. Since around 02:30 this morning, the Gages seismograph has recorded continuous broadband tremor (unreduced) peak-peak amplitudes in the approximate range 2-5mm, which may be due to increased stem emission within the crater.
EDM and GPS data recorded during the day are still being processed but the changes from previous values are not expected to be larger than the error bounds involved.