Soufriere Hills volcano, Montserrat, West Indies (UK): news & activity updates
Mise à jour: 19 mai 2022 14:25 GMT - Refresh
dernier (2022) ... | Jan-Mar 2009 | Sep-Déc 2008 | | Avr-Août 2008 | Jan-Mar 2008 | Août-Déc 2007 | ArchiveMar-Jul 2007 | Jan-Fév 2007 | Sep-Déc 2006 | Mai-Août 2006 | Fév-Avr 2006 | Jan 2006 | Jul-Déc 2005 | Jan-Jun 2005 | Jul-Déc 2004 | Fév-Jun 2004 | Jan 2004 | Jul-Déc 2003 | Jan-Jun 2003 | Jul-Déc 2002 | Fév-Jun 2002 | Jan 2002 | Août-Déc 2001 | Fév-Jul 2001 | Jan 2001 | 2000
mer., 27 août 2008, 06:00
MVO reported that during 22-29 August, observations suggested that the W side of the Soufrière Hills lava dome continued to grow. Lahars descended numerous river valleys during 25-27 August. Incandescence originating from a scar on lava dome created by the 28 July explosion, and then further expanded by a pyroclastic flow on 25 August, was observed on clear nights. Read alldim., 24 août 2008, 23:48
Soufrière Hills volcano produces small pyroclastic flows going down the Tar River on the East flank of the lava dome, which continues to grow with lava extrusion on its western part.Montrer plus
jeu., 21 août 2008, 16:10
A new lava extrusion from Soufrière Hills started from the W side of the lava dome between the 28 July lava-dome collapse event and 8 August, when a new channel of fresh rockfall material was seen below Gages Wall. During 8-15 August, seismicity and the rate of lava extrusion were generally low and sulfur dioxide emissions were elevated. On 14 August the W side of the dome was visible and the explosion crater that was generated on 28 July was almost completely filled with new lava. Lava spilled over the lower and W side of the crater and generated rockfalls below Gages Wall that were observed and heard from St. George's Hill. During 14-15 August, the scent of volcanic gases was noticeable at times in inhabited areas of Montserrat. The Hazard Level was 3.mer., 20 août 2008, 06:00
MVO reported that during 15-22 August, evidence suggested that the W side of the Soufrière Hills lava dome continued to grow. Cloud cover prevented visual observations. Rockfalls and long-period seismicity increased. Read allmer., 13 août 2008, 06:00
MVO reported that new lava extrusion from Soufrière Hills started from the W side of the lava dome sometime between the 28 July lava-dome collapse event and 8 August, when a new channel of fresh rockfall material was seen below Gages Wall. Cloud cover often prevented visual observations. During 8-15 August, seismicity and the rate of lava extrusion were generally low and sulfur dioxide emissions were elevated. Read allmer., 6 août 2008, 06:00
MVO reported that seismic levels from Soufrière Hills were relatively low during 1-8 August. Sulfur dioxide emissions (tons per day) were significantly higher than emissions prior to the partial lava-dome collapse on 28 July. Unconfirmed reports indicated the presence of an ash plume on 3 August. Read allmar., 29 juil. 2008, 07:16
After several months of quiet, a major collapse of the lava dome of Soufrière Hills took place on 28 July, 2008. Read allmer., 23 juil. 2008, 06:00
MVO reported no evidence of lava-dome growth at Soufrière Hills during 18-26 July. At least six eruptive events occurred during 20-22 July, each producing ash plumes that rose to altitudes of 2 km (6,000 ft) a.s.l. or lower. Read allmer., 16 juil. 2008, 06:00
MVO reported no evidence of lava-dome growth at Soufrière Hills during 11-18 July. Seismic activity remained low. The E talus slope continued to erode, producing minor rockfalls that descended into the Tar River Valley. Read allmer., 2 juil. 2008, 06:00
MVO reported no evidence of lava-dome growth at Soufrière Hills during 28 June-4 July. Seismic activity remained low. The E talus slope continued to erode, producing minor rockfalls that descended into the Tar River Valley. The Alert Level remained elevated at 4 (on a scale of 0-5). Read allMontrer plus
mer., 25 juin 2008, 06:00
MVO reported no evidence of lava-dome growth at Soufrière Hills during 21-27 June. Seismic activity remained low. Heavy rainfall resulted in minor mudflows down the Belham River. Read allmer., 18 juin 2008, 06:00
MVO reported no evidence of lava-dome growth at Soufrière Hills during 14-20 June. Seismic activity remained low. On 19 June, mild ash venting from the Gages vent (to the W) resulted in an ash plume that rose to an altitude less than 1.2 km (4,000 ft) a.s.l. and drifted E. Read allmer., 11 juin 2008, 06:00
MVO reported no evidence of lava-dome growth at Soufrière Hills during 7-13 June. Seismic activity remained low. The E talus slope continued to erode, producing minor rockfalls that descended into the Tar River Valley. The Alert Level remained elevated at 4 (on a scale of 0-5). Read allmer., 4 juin 2008, 06:00
MVO reported no evidence of lava-dome growth at Soufrière Hills during 31 May-6 June. Seismic activity remained low. The Alert Level remained elevated at 4 (on a scale of 0-5). Read allmer., 28 mai 2008, 06:00
MVO reported that an explosion at Soufrière Hills on 29 May produced an ash plume to an altitude of 3 km (10,000 ft) a.s.l. which drifted SW and generated a pyroclastic flow. The explosion had no precursory seismicity and was heard in multiple areas to the NW. Read allmer., 21 mai 2008, 06:00
MVO reported that activity at Soufrière Hills decreased slightly during 17-23 May. On 23 May, several pulses of ash venting from Gages vent to the W produced ash plumes to an altitude of approximately 1.8 km (5,900 ft) a.s.l. and drifted E. Read allmer., 14 mai 2008, 06:00
MVO reported that activity at Soufrière Hills increased during 9-19 May. The seismic network recorded 17 rockfalls. An eruptive event on 13 May produced an ash plume to an altitude of 3 km (10,000 ft) a.s.l. and was accompanied by a single long-period earthquake. Read allmer., 7 mai 2008, 06:00
MVO reported that during 2-9 May the lava dome at Soufrière Hills changed very little, based on measurable parameters. A small pyroclastic flow descended the E flank on 5 May. Light ashfall was reported in the Old Town area about 9 km NW. Read allmer., 30 avril 2008, 06:00
MVO reported that during 25 April-2 May the level of volcano-tectonic earthquakes at Soufrière Hills increased and was the highest since February 2006. Degassing from a vent above Gages Wall was audible in the St. George's Hill area to the NW. Read allmer., 16 avril 2008, 06:00
MVO reported that during 4-18 April the lava dome at Soufrière Hills changed very little, based on measurable parameters. Overflights on 9 and 16 April revealed that the E side of the lava dome continued to erode and exposed more resistant solid material below. A small pyroclastic flow traveled 500 m down the E flank on 10 April and generated a small ash plume that quickly dissipated to the W. Read allmer., 2 avril 2008, 06:00
MVO reported that during 1-4 April the lava dome at Soufrière Hills changed very little, based on measurable parameters. Seismic activity was very low and one rockfall signal was recorded. The Alert Level remained elevated at 4 (on a scale of 0-5). Read all
