Soufrière Hills, Montserrat: volcano news & activity updates
Hills changed very little. Seismic activity was very low and low-level rockfall and pyroclastic flow activity continued.
During 25-26 October, vigorous lahar activity was noted, especially to the E, including the Tar River valley. Ashfall was visible over N Montserrat, possibly due to rockfall activity and steam venting.
On 30 October a small pyroclastic flow was observed in the Tar River valley. The Alert Level remained elevated at 4.
Over the past days, lava-dome growth at Soufrière Hills was reduced or possibly paused. Small, intermittent pyroclastic flows occurred in the Tar River Valley.
The lava dome at Soufrière Hills continues to grow, mainly on its NE side. Over the past week, pyroclastic flows mainly affected the sector from the ENE to the NW of the dome and traveled intermittently E down the Tar River Valley. Small flows (<500 m in length) occurred NW in Tyres Ghaut, and one flow was observed at the top of Farrell's Plain.
During 2-9 March, lava-dome growth at Soufrière Hills continued and was concentrated on an E-facing lobe topped with blocky, spine-like protrusions. Rockfalls affected the E and NE flanks. Pyroclastic flows traveled 2 km and were confined E in the Tar River Valley. Heightened pyroclastic activity on 7 March resulted in an ash plume that rose to an estimated 2.4 km (8,000 ft) a.s.l. and drifted W. On 11 March, a pyroclastic flow traveled down the NE flank into White's Ghaut. On 12 March, a large, blocky spine leaned steeply towards the NE....more
Over the past days, lava-dome growth at Soufrière Hills continued and was focused on the NW sector of the dome. Occasional pyroclastic flows travelled down to the W in Gages Valley, to the NW in Tyres Ghaut and S down the Tar River Valley....more
As our correspondand Roy reports, a major explosion (probably a major dome collapse) has just occured on Montserrat's volcano, producing an eruption column of 30,000 ft (10 km)....more
Soufrière Hills volcano continues to be in a high eruption state. Frequent rock falls trigger pyroclastic flows from the lava dome towards the NW sector Tyres Ghaut and Gages Valley. The run out distances in Tyres Ghaut have, however, shown signs of increasing, possibly exceeding the previous maximum estimate of 1500 m....more [read all]
Over the past weeks, the lava dome of Montserrat's has been growing at rapid pace. The possibility of major dome collapse events (such as on May, 20, 2006) and associated pyroclastic flows promted the government to evacuate hundreds of people living at the base of the Belham Valley. Montserrat's Soufriere Hills volcano....more