Eruptions at Bogoslof, Cleveland and Sakurajima.

An explosive eruption began this 17 May 2017 around 6:32 UTC / 16 May around 22:32 AKST at Bogoslof and lasted about 73 minutes.

One pilot noticed an ash cloud at 34,000 feet asl (10,363 m) drifting southwest and the WLLN detected flashes associated with the eruption.
The AVO changed the aviation code to red and the volcanic alert level to Warning.

The last pictures of the volcano date from May 8 during an overflight by the Coast Guard station of Kodiak / USGS; They show a small vent on the north-western coast of Bogoslof, filled with a lake of hot and salty water.
 
Source: AVO

In Cleveland, a small explosion was detected by the seismic and infrasonic system this May 17, 2017 at 3:17 UTC. The aviation code is Orange and the volcanic alert level is Watch.
 
Source: AVO

A small eruption has just taken place this 17th May at 15:49 local at Sakurajima; The plume, dominating the volcano, was scattered by the winds away from Kagoshima.