Fourteen (14) events were located during the period under review. These were all long-period earthquakes and were located at depths of 0 to 2 km beneath the Soufriere Hills volcano. Long-period events continue to occur at a rate of about one every ten minutes or so throughout the period. Many of these events range up to magnitude two with the largest being a single magnitude three event that occurred at 14:51 on the 22 January. A period of very small, evenly spaced discrete events of almost identical amplitude extended from 23:00 on the 21 January to 10:00 on the 22 January. These events were accompanied by low amplitude broadband tremor.
EDM measurements were completed for the first time today on the Galways - Chances Peak - O'Garra's triangle. An unsuccessful attempt was made to do measurements on the Gages wall - Dagenham - Amersham triangle. No return signal was received from the Gages reflector despite the very good atmospheric conditions. It is possible that the reflector at Gages has again become obscured by ashfalls from English Crater.
Excellent weather conditions today allowed for perfect viewing conditions at English's Crater from the helicopter and from Chances Peak. Visual observations made from the helicopter show that the new spine, which first appeared yesterday, continue to shown signs of potential collapse. Two diagonal cracks have developed at the base of the spine and rock-falls were observed off the face of the dome. A late afternoon helicopter flight revealed that the spine is now leaning into the moat area to the south western section of English Crater. Rock-falls continue to occur from the north side of the new dome. These rock-falls produced several small ash emissions that were observed from the crater area throughout the day. None of these resulted in ash deposits outside the moat area. Steaming from the crater area was continuous throughout the day.