Popocatépetl volcano (Mexico): activity summary 11-17 April

The weekly Smithsonian/USGS volcanic activity report summarizes the recent increase of Popocatépetl volcano as follows:
During 11-15 April steam-and-gas emissions from Popocatépetl occasionally contained ash; emissions contained a substantial amount of ash on 12 April.
Seismicity increased on 13 April and at 2220 an explosion ejected incandescent blocks that landed on the NE flank as far as 500 m away from the crater rim. A larger explosion at 2236 ejected incandescent blocks that landed even further away on all flanks; an ash plume rose 2 km above the crater and drifted ENE. Ashfall was reported in San Pedro Benito Juarez (10-12 km SE), where the explosion was also heard.
On 14 April gas-and-steam plumes that contained small amounts of ash drifted SW. Multiple emissions occurred with increased incandescence from the crater. Ejected incandescent blocks landed back in the crater or on the flanks 500-800 m from the rim. Gas-and-ash plumes drifted ESE. Ashfall was reported in multiple towns, including Puebla (50 km to the E), San Pedro Benito Juarez, Santiago Xalitzintla (15 km NE), Tianguismanalco, and Atlixco (25 km SE).
On 15 April an ash plume rose 1.5 km above the crater and drifted E. Gas-and-ash emissions rose 1 km above the crater on 16 April and were accompanied by ejected incandescent fragments that were deposited on the flanks, especially to the N and NE. Later that day ash plumes rose 2 km above the crater and drifted E. Ashfall was again reported in Puebla. CENAPRED increased the Alert Level at the volcano from Yellow Phase Two to Yellow Phase Three.
During 16-17 April incandescence extended 300 m above the crater and gas-and-steam emissions were constant. Gas-and-ash plumes rose from the crater on 17 April.

• Alle News zu: Popocatépetl Vulkan
• Hintergrundinfos zu: Popocatépetl Vulkan

• Smithsonian / USGS Weekly Volcanic Activity Report

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