Wednesday, May 22, 2013

New ash emissions occurred yesterday and produced light ash falls in the outskirts of San José, in the areas of Guadalupe, Tres Ríos, Curridabat, and Ipis (at about 30 km distance). ... [more]

Tuesday, May 21, 2013

An increase in seismicity since 26 April triggered VSI to rise the alert status from 2 to 3 on a scale of 1-4 (from "Waspada", "watch" to Siaga", alert). For the moment, only degassing has been observed as surface activity. ... [more]

Sunday, May 19, 2013

The eruption continues with lava fountaining, an active lava flow and ash emissions, accompanied by continuous seismic tremor. Aerial observations suggest that the interaction of lava and ice on the upper slope of the volcano create mud flows and pyroclastic flows. ... [more]

Activity remains elevated, but the number and size of explosions have decreased during the past 2 days. CENAPRED made an overflight and found that the series of recent explosions since 14 May, in particular the two that occurred on the night of the 16th to 17th, have excavated a crater of approx. 200 m diameter and 40 m depth in the lava dome. The rest of the dome's surface is covered by fragments from the explosions. [more]

Friday, May 17, 2013

A small series of ash emissions occurred in the morning of 16 May, following a weak increase in seismic activity during the past week. [more]

Thursday, May 16, 2013

The eruption continues. The volcano produces a lava flow on the northwest flank. Interaction of the lava flow and ice, producing debris flows, as well as possible explosions at the vent produce a steam-ash plume rising up to about 20,000 ft. above sea level. ... [more]

The volcano has calmed down a bit compared to the previous week, which is also apparent on recent seismograms. No recent explosions or ash falls were reported. [more]

Strombolian activity has returned or increased and is now ejecting incandescent material to heights of 100 m. Seismic data seem currently not available from INSIVUMEH's website. [more]

Wednesday, May 15, 2013

Relatively strong explosions occurred last night (at 20:21 h local time 14 May) and this morning at 01:46 h (local time). Both eruptions generated columns of steam and ash rising 3 km and the latter explosion ejected incandescent fragments over all the volcano flanks to maximum distances of 1,500 m. ... [more]

Activity has remained generally elevated and seems to have increased yesterday. Current seismic recordings show strong explosion signals and an increase in tremor. A small lava overflow is currently visible from the NE crater. [more]