Volcano activity of July 29, 2012 - Pacaya, Fuego, Popocatepetl, Nevado del Ruiz, Karymsky, Sotara, Santa Maria, Sakurajima and Batu Tara

This (almost) daily post intends to follow up the activity changes of volcanoes all over the world.
This post is written by geologist Richard Wilson who specializes in Volcano seismicity and Armand Vervaeck. Please feel free to tell us about new or changed activity if we haven't written about it. -

July 29, 2012 volcano activity

Several volcanoes shivering (and possibly erupting!) with volcanic earthquakes and tremor today.

In Mexico, eruptive activity remains reduced at Popocatepetl, but volcanic tremor is visible on the latest Popo seismogram.

In Guatemala, volcanic tremor is again evident on seismograms from Pacaya volcano (station PCG), while much stronger tremor at nearby Fuego volcano suggests enhanced eruptive activity there. (station FG3)

In Colombia, enhanced tremor occurred overnight at Nevado Del Ruiz volcano (station OLLE). Tremor at the volcano has since subsided to low levels.

Also in Colombia, volcanic earthquakes have become more numerous (or at least more visible) at Sotara volcano in the past 24 hours. (station SOSO)

Satellite data suggests a large (or at least a larger than normal eruption) at Karymsky volcano (Kamchatka Peninsula) this morning. Karymsky has produced almost daily outbursts since at least the 1970's.

Activity observed by satellites
VAAC Darwin reports further volcanic ash clouds near the Batu Tara volcano, Indonesia
VAAC Washington is publishing a warning for eventual near summit ash clouds of Santa Maria volcano, Guatemala
VAAC Tokyo reports continued explosions at Sakurajima volcano, Japan