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Santa Maria volcano satellite image (c) Google Earth View
Santa Maria volcano satellite image (c) Google Earth View
Santiaguito volcano
Stratovolcano 3772 m (12,375 ft)
Guatemala, 14.76°N / -91.55°W
Current status: erupting (4 out of 5)
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Santiaguito volcano eruptions:
1902 (catastrophic Plinian eruption of Santa Maria), 1903, 1922-ongoing (Santiaguito dome complex)
Typical eruption style:
Dominantly explosive, formation of lava domes
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Volcano news: Santa Maria (Guatemala)

Santiaguito volcano (Guatemala): explosive activity (field report 26-28 Dec 2015)

Thursday Dec 31, 2015 00:20 AM | BY: T

Small explosion at Santiaguito on the morning of 28 Dec 2015
Small explosion at Santiaguito on the morning of 28 Dec 2015
During our stay at / near Santa Maria volcano during 26-29 Dec, we observed only explosive activity at Santiaguito, but no signs of effusive activity (lava flows): no rockfalls or other movements were seen at the recently active lava flows or on the flanks of the dome itself, indicating that at present, no lava flows are active.
The volcano's activity consisted in explosions of varying size, at irregular intervals ranging between 10 minutes and 8 hours and producing ash plumes that rose up to 2-3 km above the Caliente dome. Sometimes, only loud, jet-engine like degassing events took place instead of ash explosions. These degassing events often lasted more than 10 minutes, while the explosions typically only took less than one minute.
Photos and impressions from our (still ongoing) tour will be posted in the New Year.
Previous news
Explosion from Santiaguito this morning (image: Sismos en Guatemala ‏@SismosGuate / twitter)
Tuesday, Dec 01, 2015
A phase of elevated activity has started at the volcano since 29 November. The largest event so far occurred this morning at 07:07 local time, when a strong explosion produced an ash plume that rose approx. 2-3 km and (probably) a small pyroclastic flow. Ash fall occurred in nearby villages and towns including San Marcos Palajunoj, and Finca La Florida. ... [more]
Friday, Nov 06, 2015
Heavy rainfalls caused several lahars during the past days. The volcano continues to produce occasional small to moderate explosions from the active Caliente dome. ... [more]
Pyroclastic flow from Santiaguito last Wednesday (INSIVUMEH)
Thursday, Oct 01, 2015
Activity has picked up during the past days: a series of partial collapses from the Caliente lava dome has been generating small to moderately large (up to 4-5 km long) pyroclastic flows, the volcano observatory reported in its latest special bulletin. [more]
Santiaguito's explosion yesterday morning
Tuesday, Aug 25, 2015
A stronger than usual explosion occurred yesterday morning at 08:43 local time, producing a plume that rose approx. 2 km above the lava dome and generated small pyroclastic flows. ... [more]
Tuesday, Aug 18, 2015
Activity at the Caliente lava dome remains essentially unchanged. Some explosions produced ash plumes of up to 500 m height and the eastern blocky lava flow remains weakly active. [more]

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