From https://qle.vivaldi.net/2025/04/03/whoops/ The dual on the bottom of this chart Low-985 and L-992 is Pinatubo and Nevado del Ruis I should have known.
Nevado del Ruis has always accompanied Pinatubo a few days later and not for as long but oftentimes, reaching the same plume heights usually. Pinatubo is going to arc with ascendancy in a few days, while Nevado del Ruis only sparkled this day or the 24 hours:
Popocatépetl (Central Mexico): (4 Apr) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 19000 ft (5800 m) altitude or flight level 190. OCSL VA EMS OBSD to 19000 ft (5800 m)
Nevado del Ruiz (Colombia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200. POSSIBLE ONGOING VA EMS. to 20000 ft (6100 m)
Monday. I spoke too soon, the eruption of Nevado del Ruis was slated for Wednesday, so it is going to erupt a few days. Put no trust in mortal man!
We can only try our best; if sufficiently enthused.