Piton de la Fournaise - the bottom of the crack remains active September 12 - photo Ilotdrones / Twitter
The eruption continues at Piton de la Fournaise from several lava fountains, located on the lower portion of the crack. A spatter cone (projection cone) halfpipe has been built. The different arms of the lava flow came together to form a single flow in the afternoon.
Details from Ludovic Leduc:
the eruptive fissure is about 1,000 meters, the peak overlaps Célimène (formed by the eruption of 2000) with significant degassing, and run to the flat of the Enclosure, on an axis N-E. To 18h the 11.09, the top of the crack is inactive. The spatter-wall surrounding the lower vent is about 5 meters high.
Sources: pictures of 12 September and Objectif-Volcans / Leduc Ludovic
Piton de la Fournaise - fountaining and unique flow 09.12.2016 / 4:44 p.m. GMT / 8:44 p.m. local - webcam Piton Partage OVPF
In Santiaguito, the vulcanian activity resumed on September 11 at 11:45 local, accompanied by a plume rising to over 5000 meters asl.
Abundant white degassing (water vapor) and occasionally blue (sulfur gases) then mark the dome, rising to 200 meters.
A small explosion on September 12 at 5:49, generated a plume rising to 3400 meters asl before dispersing to the southwest. Ash falls were reported on San Marcos Palajunoj and Aldea Loma Linda.
Brad Scott reports on GeoNet an increased activity on White Island with passage of the level of volcanic alert from 1 to 3 and changing the aviation code to orange;
on September 13, a vent on the lava dome in 2012 emmited passively ashes for several hours, generating a low plume that stretched over 50 km to the northeast.
White Island - the plume is distinct in this radar satellite view of the Met Service NZ 09.13.2016 / around 12 pm