Seismicity and infrasound signals were consistent with low level eruptive activity and a steam plume was persistent. By 23 October lava had filled the crater and during 23-24 October overflowed the north crater rim. A 200 m long lava flow on the north flank melted snow and caused a lahar which traveled 2.9 km and stopped at about 1,230 m elevation. A smaller lava flows caused a 1 km long lahar…