Highlights from this week's report include:
Things are getting a little noisy in Colombia. I mentioned a few weeks ago about a possible explosion at Nevado del Ruiz. Now we have reports of increased seismicity under nearby Cerro Machín and ash plumes from Nevado del Huila. After a few centuries of relative quiet, it looks like the volcanoes of the Colombian Andes are looking more lively.
Also in South America, a gas plume was spotted at Chile's Planchon-Peteroa. This is the second time this year that increased gas emissions have been noted at the volcano that hasn't erupted since 1998.
Shiveluch on the Kamchatka Peninsula in Russia continues to rumble - ash plumes were produced from pyroclastic flows and steam-and-gas plumes reaching 4 km / ~13,100 feet were spotted as well.