While no activity was detected in infrasound or seismic data during January 2017, weakly elevated surface temperatures continued to be observed in infrequent clear satellite views (8 and 9 January), just as they were during 8-10 December and in infrared thermal data at the end of December (BGVN , figure 19).
Low-level steam plumes were seen in clear views of the summit from the webcam during 15-19 and 21 January.
The dome was about 70 m in diameter at that time, similar in size to previous domes.
Observations in satellite imagery of weakly elevated surface temperatures at the summit continued during 7-9 February and during the last few days of the month.
By the third week, surface temperatures were weakly to moderately elevated.
No significant activity was detected in seismic, infrasound, or satellite data during the first two weeks of April 2017.
A satellite image on 15 April, however, showed the presence of a small (less than 10-m-diameter) mound deep in the crater; the previous 75-m-diameter lava dome had been destroyed by the 24 March explosion.
Concentric rings and radial fractures in the dome surface surrounded an elevated hot dome.
Photo taken during the 2015 field season of the Islands of Four Mountains multidisciplinary project, work funded by the National Science Foundation, the USGS/AVO, and the Keck Geology Consortium. A 60-m-diameter lava dome was seen in this World View-1 satellite image from of Cleveland's summit crater. Image data copyright 2016 Digital Globe, Next View License. Thermal and photographic images of the lava dome that was growing in the summit crater of Cleveland on 26 July 2016.
Small explosions on 28 and 30 October partly destroyed the lava dome.