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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)

Santa Maria / Santiaguito volcano (Guatemala), activity update: moderate explosions at intervals of 15 minutes

Tuesday Feb 28, 2012 11:05 AM | BY: T

Santiaguito volcano in Guatemala has been displaying a slightly elevated state of activity in recent days. INSIVUMEH reports moderate explosions about every 15 minutes that eject plumes of gray ash tot 600 and 800 meters above the crater, and producing an ash plume drifting to the west and SW until dissipating at about 15 km distance.
Light ash falls from these eruptions frequently occur in the villages San Marcos, Buena Vista and Palajunoj and the El Faro, Florida, and Monte Claro Fincas.
Crater glow at the summit of the lava dome is well visible at night, and a blocky lava flow with constant avalanches of blocks rolling down to tits base continues to be active, raising secondary ash plumes.
The monitoring network records the explosions on seismic signals.
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Links / Sources:
Previous news
Saturday, Feb 18, 2012
Moderate explosions continue producing small gray ash columns, and ashfall in the areas of the nearby farms to the west. Weak avalanches occur from the front of the small active lava flow on the southeast side of Santiaguito. [more]
Saturday, Feb 18, 2012
Moderate explosions producing small gray ash columns, reported ashfall in the areas of the nearby farms to the west. Weak avalanches from the front of the small active lava flow on the southeast side of Santiaguito. (Source: INSIVUMEH) [more]
Thursday, Feb 02, 2012
INSIVUMEH reported that active lava flows on the S and SE flanks of Santa María's Santiaguito lava-dome complex generated block avalanches on 27 and 30 January. Moderate explosions generated ash plumes that rose 700 m above the complex and drifted SW and S. Strong winds caused re-suspended ash to rise 1 km high and drift several kilometers W and S. Ashfall was reported in Monte Claro (S) and Palajunoj (SW) on 27 January. ... [more]
Thursday, Jan 19, 2012
The lava dome growth of Santiaguito continues at moderate levels. Sporadic explosions produce ash clouds that rise up to 600-800 m above the lava dome and mostly drift SW. A viscous lava flow is active on the SE flank. Block avalanches are generated from the front of the lava flow and on the SW flank, accompanied by rumbling noises. [more]
avalanches of ash and incandescent blocks produced by the growth of the volcanic dome of the volcano Santiaguito Caliente - Guatemala in January 2012 (Yashmin Chebli)
Wednesday, Jan 11, 2012
During the month of January 2012 the activity of the volcanic dome of Santiaguito Caliente has been steady with many degassing emissions and ash plumes well above the top of the volcano Santa Maria (the volcano father). during the 4 days of observation of the activity by the team of geologists and volcanologists during an expedition to VolcanoDiscovery, we identified one to two hours by pyroclastic flow. These flows are formed by avalanches of ash and incandescent blocks produced during the surge in gas and magma during the extrusion of the dome and they ran down the sides of the South and South West dome to spread out up to 500 m to 1 km distance from the base of the dome. [more]

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