In the last 24 hours, CONRED seismographs recorded 21 hours of continuous tremor, of average amplitude, at Popocatépetl. The volcano had nocturnal glow.
From 19:30 local time, the level of harmonic tremor increased, confirming the rise of magma feeding the growth of the intracrateric dome, characteristic activity of level amarillo fase 2 of the volcanic alert.
The tremor signal has stoped at 9:50 p.m. loc. on January 27 (January 28 3:50 GMT) leaving place to some low intensity exhalations.
A survey of the volcano was conducted, with the help of the Federal Police, to realize the state of the dome.
The CENAPRED remember not to approach the volcano, because of the danger of falling ballistic fragments.
Popocatépetl - tremor between 01.26.2016 / 23h and 27.01. 2016 / 10:45 p.m. - Doc. Servicio Nacional Sismologico
Popocatépetl - overview of the summit and the dome - photo via Twitter LP.Fuente Coordinador Nacional de Protección Civil Secretaría de Gobernación.