From Tue Nov 24 19:12:14 1998 Date: Tue, 24 Nov 1998 18:11:28 -0400 From: MVO To: "''" Subject: MVO evening report 24 November 1998 Montserrat Volcano Observatory Montserrat, W.I. Report for the period 5 p.m. 23 November to 5 p.m. 24 November 1998 The volcano remains quiet. There was a 15 minute period of ash venting between 5:45 and 6:00 this morning. There were 30 rockfall signals and 1 long period earthquake recorded over the last 24 hours. GPS surveying was continued today with completion of station occupations at Windy Hill and Galways, and the initiation of measurements at White's and Brodericks. At about 4pm this afternoon the weather over the volcano cleared completely and a thorough examination of the crater area was possible from the MVO helicopter. Excellent views were obtained of the big gulley formed in the dome collapse of 12 November. It could be seen to have cut down about 150m (450 ft) into the dome edifice. Fumarolic activity appeared low at this time. This inspection also revealed that there are several parts of the remaining dome which are very steep or overhanging, and could collapse at any time to produce pyroclastic flows and ash clouds. Residents of Montserrat are advised to keep listening to ZJB Radio Montserrat for information relating to any further developments in the state of the volcano. 17:00, 24 November 1998