The lava flow on the upper southern slope had decreased to only about 75 m length. [less]

Many of the explosions produced moderate to strong shock waves that caused vibrations in nearby villages. Incandescent material was seen ejected to up to 200 m above the crater and produced abundant avalanches on the crater slopes. [less]

Sometimes strong shock waves accompany the explosions and rattle windows and roofs of houses in the areas of Panimache, Morelia and others. Ash plumes rise to up to 700 m above the crater.
The recent lava flow seems to have stopped. [less]

The latest INSIVUMEH report mentioned 13 weak and 4 moderate explosions during 23 Jan with ash plumes up to 800 m height, abundant lava avalanches on the upper slope following strombolian ejections of up to 100-150 m above the crater, and the continued active flow, which was 100 m long yesterday. [less]

During the past days, activity had been dominated by frequent small to medium strombolian explosions that eject abundant lava up to about 150 m above the vent, ash plumes up to 1 km high, shock waves felt in up to 10-12 km distance and continuing weak lava effusion on the upper southern flank. Its length yesterday was estimated about 200 m. [less]

13 explosions were observed during the past 24 hours (11 weak and 2 moderate ones) with ash plumes rising up to 800 m above the crater and forming a plume 8 kilometers to the south and southwest. Incandescent material was seen rising to 75-125 m and locomotive-like degassing sounds, as well as shock waves were noted.
The lava flow on the upper SE flank remained moderately alimented and was 300 m long yesterday morning. [less]

Activity remains elevated with abundant lava ejected to 75-125 m height during occasional moderately strong strombolian explosions that are followed by ash plumes rising up to about 700 m and drifting approx. 10 km to the S and SW. Rumblings like locomotive-engine sounds lasting 2-5 minutes accompany the degassing during the eruptions. The lava flow on the SE slope towards the Trinidad canyon reached 300 meters length this morning and produced small glowing avalanches.

Activity continues at moderate levels as during the past days. INSIVUMEH counted 13 moderate explosions with shock waves and ash plumes rising 300-800 m. The lava flow on the upper southern slope towards the Trinidad drainage was 300 m long this morning.

[Update] The volcano observatory observed an increase in explosions and a new lava flow. Shock waves from explosions could be felt in up to 15 km distance and they eject abundant lava onto the upper slopes. ...more [read all]

Seismic activity has decreased at the volcano, suggesting that the latest surge in lava emission (both as larger-than-usual strombolian explosions and lava flow) is over.

Activity remained elevated, but decreased a bit today, judging from the seismic signal. The volcano observatory reported moderate explosions with shock waves that ejected incandescent bombs to 200 m above the crater and left abundant incandescent avalanches on the upper crater. Associated ash plumes rose up to 1000 m and drifted 10 km before dissipating. The new lava flow towards the Ceniza drainage was 400 m long this morning.

Another surge of (mainly effusive) activity occurred yesterday. The observatory detected an increase in tremor and lava flow emission, as well as moderate to strong explosions with shock waves felt in up to 15 km distance, where they rattled roofs and windows in Panimache, Morelia and other areas to the eastern side of the volcano. ...more [read all]

Occasional strombolian explosions are relatively strong, producing incandescent ejections up to 100-150 m above the crater and causing incandescent avalanches around the crater. Ash plumes rose to up to 500 m. Shock waves can often be felt accompanying the explosions.

The volcano's activity has remained unchanged and at relatively low levels, with weak to moderate strombolian explosions producing ash plumes of 300-700 m height.