Santiaguito volcano (Guatemala): strong explosion and pyroclastic flows
Sun, 22 Sep 2013, 19:10 | BY: T
Explosion and pyroclastic flows from Santiaguito yesterday morning (INSIVUMEH)
The explosions, accompanied by shock waves that could be heard in 20 km radius, produced an ash plume that rose to about 4.5 km altitude or about 2 km height above the crater. Significant (but smaller compared) ash plume rose from the pyroclastic flows. Ash fall occurred in Quetzaltenango, Santa María de Jesús, Zuníl and other areas downwind.
There has been no recognized precursor to the eruption, illustrating that the activity of the lava dome is highly unpredictable and potentially extremely dangerous. A similar eruption occurred almost exactly one month ago.
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Previous news
Fri, 20 Sep 2013, 09:52
Santa María / Santiaguito volcano (Guatemala) activity update
Activity has been week with no significant changes. No explosions were reported during 18-19 Sep, but moderate rock avalanches could be heard, indicating that (some of) the lava flows on the flanks of the Caliente dome remain weakly active. ... Read all
Wed, 18 Sep 2013, 06:00
Santa Maria volcano (Guatemala) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 September-24 September 2013 (New Activity / Unrest)
INSIVUMEH reported that during 17-18 September explosions from Santa María's Santiaguito lava-dome complex produced ash plumes that rose 900 m and drifted W. Block avalanches descended the E flank of Caliente cone. Degassing sounds were reported during 19-21 September; gas plumes rose 150 m and drifted SW on 21 September. ... Read all
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