On 2 January several explosions occurred at Santa María's Santiaguito lava-dome complex. Resultant ash emissions drifted SW. Lava avalanches originated from the SW edge of the Caliente dome, and from the fronts of active lava flows on the volcano's SW flank.
On 13 December, several weak-to-strong explosions occurred at Santa María's Santiaguito lava-dome complex, producing ash plumes to a maximum height of ~2.5 km above the volcano (or 20,600 ft a.s.l.) that mainly drifted SW. Avalanches of volcanic material spalled off of the fronts of active lava flows.
Wed, 7 Dec 2005, 06:00
On 24 November at 0955 an eruption at Santa María's Santiaguito lava-dome complex produced an ash cloud to a height of ~4 km above the volcano (or 25,500 ft a.s.l.). The eruption was accompanied by a pyroclastic flow that traveled to the S. Fine ash fell 6-7 km S of the volcano, impacting properties in the area.
Read allWed, 16 Nov 2005, 06:00
During 17-21 November, several weak-to-moderate explosions occurred at Santa Maria's Santiaguito lava-dome complex, producing ash plumes to a maximum height of ~4.6 km (15,000 ft) a.s.l. Several small pyroclastic flows traveled down the SW and NE flanks of Caliente dome, stopping at the base of the dome. Avalanches of volcanic material spalled off of the fronts of active lava flows and traveled SW.
Read allWed, 9 Nov 2005, 06:00
During 11-14 November, several explosions occurred at Santa María's Santiaguito lava-dome complex, producing ash plumes to a height of 1.2 km above the volcano (or 16,300 ft a.s.l.). Several small pyroclastic flows traveled down the SW, NE, and S flanks of Caliente dome. Frequent avalanches of volcanic material occurred off of the fronts of active lava flows mostly to the W of Caliente dome, and less frequently to the S and NE.
Read allWed, 2 Nov 2005, 06:00
During 2-7 November, weak-to-moderate explosions occurred at Santa María's Santiaguito lava-dome complex, producing plumes to a height of ~1 km above the dome (or 15,700 ft a.s.l.). A few weak avalanches of volcanic material were observed SW of the lava dome. A lava flow that formed on 21 October extended ~100 m down the volcano's W flank.
Read allWed, 26 Oct 2005, 06:00
During 26-31 October, small-to-moderate explosions occurred at Santa María's Santiaguito lava-dome complex. Plumes were produced that rose to a maximum height of ~4.9 km (16,000 ft) a.s.l. on the 28th.
Read allWed, 7 Sep 2005, 06:00
During 7-11 September, small-to-moderate explosions occurred at Santa María's Santiaguito lava-dome complex. Plumes were produced that rose to a maximum height of ~1.5 km above the volcano (or 17,300 ft a.s.l.) on 8 September. On 7 September, a moderate lahar traveled down the volcano's flank.
Read allWed, 13 Jul 2005, 06:00
During 13-18 July, weak-to-moderate explosions continued at Santa María's Santiaguito lava-dome complex, with plumes rising to ~1.3 km above the volcano (16,600 ft a.s.l.) on the 13th. Avalanches of volcanic material were produced at the front of an active lava flow, and from the SW edge of Caliente Dome.
Read allWed, 6 Jul 2005, 06:00
During 6-11 July, weak-to-moderate explosions continued at Santa María's Santiaguito lava-dome complex, with plumes rising to ~1 km above the volcano (15,700 ft a.s.l.). Avalanches of volcanic material were produced at the front of an active lava flow, and from the SW edge of Caliente Dome.
Read allWed, 22 Jun 2005, 06:00
On 22-24 June explosion columns from Santa Maria reached ~900 m above the crater (15,300 ft a.s.l.) and extended several kilometers to the SSW and W. On 27 June, in the region of Palajunoj, on the SW flank, constant avalanches of lava blocks were observed.
Read allTue, 21 Jun 2005, 07:46
Incandescent blocks are extruded as up to 15 m high spines (?) from the lava dome inside the crater of the "Domo Caliente" (the glowing dome). Explosions create gray steam and ash plumes of up to 1,4 km height. Since February, a small lava flow on the SE flank of the lava dome is active, producing small avalanches of blocks detaching from its front, that accumuate in a delta at about 1450 m a.s.l.
Read allTue, 14 Jun 2005, 00:04
Degassing from the summit crater dome produces a white steam plume of about 100m height, while near-constant incandescent rock-falls detach from the active dome.
Sat, 4 Jun 2005, 00:16
Yesterday, a small dome collapse occurred at Santa Maria volcano, producing a pyroclastic flow and ash cloud that caused light ash fall in some sourrounding areas of the volcano (Florida, Faro and la Mosqueta). 5 minor explosions took place during the past 24 hours, producing eruptinon columns of 0,8-1,2 km height, lasting few minutes and causing very fine ash fall up to 15km distance to the SSE of the volcano.
Read allWed, 1 Jun 2005, 06:00
Moderate explosions at Santa María's Santiaguito lava-dome complex produced plumes that rose to ~1.2 km above the volcano (16,300 ft a.s.l.). On 2 June, the partial collapse of the lava dome in the crater of Caliente Cone generated a pyroclastic flow that traveled ~4 km SW.
Read allWed, 25 May 2005, 22:35
From the GVP/USGS Weekly Volcanic Activity Report 18-24 May 2005:
Read allWed, 18 May 2005, 06:00
Constant avalanches occurred from lava-flow fronts on the SW flank of Santa Maria's Santiaguito lava-dome complex on 17 May. Explosions during 17-20 May produced ash clouds to a height of ~1 km above the volcano (15,700 ft a.s.l.); ash fell 7-10 km from Caliente Dome.
Read allWed, 11 May 2005, 06:00
Constant avalanches were reported on 10 May from the lava-flow front and the Caliente Dome, along with one small ash explosion. Minor explosions described in a 13 May report send gray ash plumes 400-600 m high. Avalanches from the SW-flank lava flow continued.
Read allWed, 4 May 2005, 06:00
Continuing explosive activity from Santa María's Santiaguito lava-dome complex during 4-9 May sent ash columns as high as 1.3 km above the vent. Small collapses at the Caliente Dome generated pyroclastic flows 500-3,000 m long.
Read allWed, 20 Apr 2005, 06:00
Several explosions occurred at Santa María's Santiaguito lava-dome complex during 21-25 April. Lava avalanches occurred down the SW flank of Caliente Dome. Ash plumes rose to ~1.2 km above the dome (~16,300 ft a.s.l.).
Read allWed, 16 Mar 2005, 06:00
During 16-21 March, several ash explosions occurred at Santa María's Santiaguito lava-dome complex. Ash plumes rose to a maximum height of 1.3 km above the volcano (~16,600 ft a.s.l.). Lava avalanches traveled down the SW flank of Caliente Dome.
Read allWed, 2 Mar 2005, 06:00
During 2-8 March, several weak-to-moderate explosions at Santa María's Santiaguito lava-dome complex produced ash plumes to a maximum height of ~1.2 km above the dome. Avalanches of volcanic blocks traveled down the E and SW flanks of Caliente Dome.
Read all
