AVO Cleveland ORANGE/WATCH - Unrest continues; persistent thermal anomaly in satellite data.
Nov 9, 2017 21:14 - Unrest at Cleveland volcano continues. Elevated surface temperatures remain visible in satellite data over the past day, which may be indicative of a lava flow in the summit crater. No significant activity was detected by seismic or infrasound sensors over the past 24 hours. Lava domes that have been erupted at Cleveland volcano since 2001 have all been destroyed by explosive activity within weeks to months after lava effusion. These explosions typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are ...