Max VEI: 4, 1814 Jan 9 - 1814 Jan 9 Confirmed Eruption, 2200 BCE 150 years The consent submitted will only be used for data processing originating from this website. The lava island in the crater lake was visited on 13 December by Haraldur Sigurdsson and Peter Baker in a dinghy and it was found that the water temperature increased from 74C at the lake margin to 90C at a distance of 10 m from the island. "There have been no volcanic explosions, or any emission of steam or gases, and all that has happened since 31 October is the extrusion of a very viscous dome-forming lava onto the floor of the crater. The island has now reached a height of 120 feet above water level and continues to grow in area as new lava spreads laterally in the lake. No local earthquakes have been recorded by tremors associated with rockfalls on the island continue to occur. Earthquake swarms were recorded during 22-25 March and 5 April, signifying a change in the eruption pattern. Confirmed Eruption Height of the lava island has remained constant at 226 feet above 3 November datum since 20 March, or some 316 feet above present water level. Resulting pyroclastic flows traveled about 6 km WSW. While the N of the island continues to rise, the S end shows little or no increase in height. The risk of a dangerous eruption is now remote and will continue to decrease with time. Water level is dropping at a slower rate than before 7 March, when the daily drop was 9 inches on the average. A team visited the dome on 19 and 23 March to make observations, take measurements, and maintain monitoring equipment. Lahar signals were recorded later that day at about 2100. Information Contacts: Haraldur Sigurdsson and J.P. Shepherd, Seismic Research Unit, University of the West Indies. Credit: NOAA. The volcanoes of the West Indies have produced some of the most explosive and deadly eruptions over the past few centuries. No further eruptive activity took place until December 2020, when a new lava dome began to grow SW of the pre-existing 1979 lava dome, accompanied by increased seismicity, crater incandescence, and gas-and-steam emissions. Sulfur dioxide emissions were first detected on 1 February using a Multi-Gas Instrument and a filter pack; the dome had reached an estimated volume of 5.93 million cubic meters. The height of the lava dome has increased by an average of about 1.5 ft/day and the lake water has continued to drop at a mean of 9 in/day. The rate of these events decreased by 0100 on 19 April. The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Between surveys on 2 July and 4 August, the lava had expanded 30-50 m horizontally (except on the N side where it had reached the crater wall, 4:6) and about 6 m vertically, to a mean diameter of 820 m and a mean height of 85 m. Assuming 45 sides, its volume was 36.5 x 106 m3 on 4 August, having increased an average of 0.36 x 106 m3/day in July (similar to the June rate). Overnight during 10-11 April ash again fell island-wide, and also in the Grenadines (to the SSW), Barbados, and Saint Lucia (50 km NNE). The NE rim of the 1.6-km-wide summit crater is cut by a crater (500 m wide and 60 m depth) that formed in 1812. The crater lake waters have found an outlet through the flank of the cone and are seeping out. Robertson R, 2005. (eds)., 1982, Soufrire Volcano, St. Vincent: Observations of its 1979 eruption from the ground, aircraft, and satellites: Science, v. 216, no. This land mass is 50-feet in height at the highest point as of 28 November, and the area covered by this larger island is over 100 m in diameter. They recorded temperatures around 590 degrees Celsius from the expanding dome front. Thus the present eruption in St. Vincent is likely to continue for one year and could possibly continue for two. The Alert Level was raised to Red at around 1830, and the Prime Minister issued an evacuation order for the Red Zone at the N part of the island, affecting 16,000-20,000 people. Ash is falling on many communities on northern half of the island. As strong explosive activity continued at Soufrire St. Vincent, strong SO2 plumes exceeding 2 Dobson Units (DUs) were detected during 9-14 April, moving generally E, based on data from the TROPOMI instrument on the Sentinel-5P satellite. Data is the average of three determinations; analysis was done by the U.S. Geological Survey. | May Eruptions, eruption precursors and related phenomena in the Lesser Antilles. During an overflight on 26 April scientists observed white steam plumes rising from several locations on the crater floor, though visibility was poor. Confirmed Eruption, 0530 BCE 75 years Those eruptions lasted months, so if this cycle is similar, people may need to stay away from the volcano (and their homes) for quite a long time. Anomalous winds spread sulfurous odors, causing unwarranted fears. The dome continued to expand laterally to the N and S, according to reports issued on 6 and 8 February. Robertson R E A, 1995. Interactive online tool to view volcano webcams and live seismic recordings side-by-side online. The Alert Level remained at Orange (the second highest level on a four-color scale). By 26 March the period of elevated VT earthquakes had ended; only small, low-frequency events associated with lava dome growth were recorded. Card 1330 (15 December 1971) Haraldur Sigurdsson and J.P. Shepherd, Seismic Research Unit, University of the West Indies. St. Vincent evacuated ahead of 'imminent' eruption of La Soufrire volcano - CNN Video JUST WATCHED Caribbean island evacuated ahead of 'imminent' volcano eruption Replay MUST WATCH World. . There is some indication that this eruption is similar to what occurred during the 1902 activity at La Soufriere. An example of data being processed may be a unique identifier stored in a cookie. Scientists visited the dome on 16 January and collected rock samples from the W part of the dome. Almorales and H. Sigurdsson, Seismic Research Unit, University of the West Indies. Thousands flee Caribbean volcano. The lake level has dropped about one foot per day in the last six days. The eruption continues as before. On 11 April 1972, H. Sigurdsson reported that "the Soufriere eruption has now ceased. Activity during January-February 2021. University of the West Indies Seismic Research Centre (UWI-SRC) and National Emergency Management Organisation (NEMO) reported that the lava dome in Soufrire St. Vincents main crater continued to slowly grow during 2-8 March. Frequent explosive eruptions after about 4,300 years ago produced pyroclastic deposits of the Yellow Tephra Formation, which cover much of the island. Island growth continues; historical comparisons, Card 1350 (03 February 1972) Analyses of volcanic products. Visual observations and timing of events and processes on the island have permitted correlation of some of the larger tremors with rockfall and lava creep. J. Volcanol. Lahar deposits were reported in the Sandy Bay area. Watch volcanoes live and catch an eruption in action! Satellite data most recently from 24 April, and seismic data suggested likely cycles of crater dome growth and destruction. J. Volcanol. The Alert Level remained at Orange (the second highest level on a four-color scale). NEMO stated that evacuations in the Orange and Red Zones were affected by significant ashfall and poor visibility, but by the evening most residents had been evacuated. Beginning at about 0900 on the 15th, a decline in tremor amplitude made it possible to identify more than 100 individual events per hour at the station 9 km from the summit. Lamb, H.H., 1970, Volcanic dust in the atmosphere: Philosophical Transactions of the Royal Society of London, series A, v. 266, no. Robertson stated, if the La Soufriere were to have an explosive eruption ash can reach east to Barbados and even further. Res., 371:86-100. Click on the index link or scroll down to read the reports. Much of the northern end of the island was devastated by a major eruption in 1902 that coincided with the catastrophic Mont Pele eruption on Martinique. Further, we had just completed a GPS campaign on the island during January 2005, which revealed nothing unusual. Sigurdsson and Almorales carried out a bottom survey of the crater lake on 2 March (table 6) along a profile from the south point of the island to the near shore (282 feet). Fiske R S, Shepherd J B, 1982. The number of crater tremors have gradually declined to one about every two days. New observations of the process of growth indicate that the sequence of events is as follows: hot molten lava is extruded below water level at the base of the ridges and, as this lava comes into contact with the lake water, minor steam explosions are generated. Thermal activity resumed in April, occurring in three distinct clusters of moderate-power anomalies throughout the month. Credit: NOAA, Initial ash plume seen by GEOS-16 from the April 9, 2021 eruption at La Soufriere on St. Vincent. After 23 December a total of eight events were detected before seismicity briefly subsided. Smaller explosions continued over the. The likelihood of dangerously explosive activity during the present eruption is now remote. This was the 30th distinct explosion since the explosive phase began. This drop can be accounted for entirely by evaporation and there is no evidence of leakage through the crater wall. This explosion occurred 52 hours after the last one and was the 30th since the explosive phase started. Card 1359 (29 February 1972) John F. Tomblin, Seismic Research Unit, University of the West Indies. Observations on 14 January showed that the dome was growing taller and expanding to the E and W. An overflight on 15 January showed extensive vegetation damage on the E, S, and W inner crater walls; damage previously noted on the upper SW crater rim had expanded downslope (figure 11). SO2 measurements taken from a boat on the W coast yielded a flux of 1,036 tons/day. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 20: 1-56. Several reports of felt events came from nearby communities, including Fancy and Chateaubelair. Information about large Quaternary eruptions (VEI >= 4) is cataloged in the, EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. The island height is unchanging; loose material on the island is being washed into the lake by the rains, revealing the structure of the lave mass. Multiple lahars continued to be recorded by the seismic network within all drainages during 28-30 April due to heavy rainfall (figure 32). Around 2100 the seismic network recorded multiple lahars, though their location could not be determined. This is the first explosive eruption at La Soufrire since 1979, although lava has been erupting at the summit since late December 2020. Table 7. There has been no significant change in seismicity since a several-day increase in the number of events in late June and early July. Chemical analysis of Soufriere St. Vincent samples from the island in the crater lake collected on 13 December 1971. The VAAC stated that a dense ash plume rose to 11 km altitude and drifted E, SE, N, and NE (figure 27). Expand each entry for additional details. That visit found nothing out of the ordinary. A swarm of volcano-tectonic (VT) earthquakes began at 0638 on 5 April. Card 1358 (23 February 1972) W. Aspinall and H.J. The mean diameter of the lava extrusion increased from 820 m on 4 August to 832 m on 21 August, but the highest point has remained at 130 m above the crater floor since 11 August, after 13 m of vertical growth from 10 July to 11 August. The eastern edge of the gas plume reached about 4,700 km to the W coast of Africa by 12 April, and another 2,000 km inland to Mali and Niger on 13 April. The water level is now dropping at the rate of 3.5 inches per day leaving on the slopes of the crater a thin scum of muddy substance which on hardening becomes flaky and is eventually washed back into the lake by the rain. and drifted mainly N over the sea. Some of these explosions breach the surface of the lake near the island as areas of boiling water, and are followed by the spread of a red-brown stain which probably consists of stirred-up sediments from the lake bottom. The first pre-eruption seismic event, telemetered to the Seismic Research Unit of the University of the West Indies by seismometers 3 and 9 km from Soufrire's summit, was a strong local earthquake at 1106 on 12 April, within 1 hour of the fortnightly earth tide maximum (calculated by F.J. Mauk). Activity at the crater has continued along the lines established three months ago. all webcams provider's website. The pattern of seismicity again changed; high-amplitude tremor episodes ceased, but two low-amplitude and one high-amplitude episode were recorded during 0600-1700. However, monitoring of the volcano by the Seismic Research Unit, University of the West Indies, continues. Another episode of tremor began at 0230 on 15 April, as well as increased ash venting. The new dome had spread over the remnants of the old crater lake by about 20 May, but a new lake had begun to form at the beginning of June because of the onset of the rainy season. As of 2004, the monitoring network had consisted of five seismic stations, eight GPS stations, and several dry tilt sites. It is sponsored by the, The IAVCEI Commission on Volcanic Hazards and Risk has a, Middle InfraRed Observation of Volcanic Activity (. A new effusive eruption had built a lava dome in the summit crater of Soufrire St. Vincent when observed on 29 December by personnel from the National Emergency Management Organisation (NEMO), St. Vincent and the Grenadines, and the Alert Level was raised to Orange (the second highest level on a four-color scale). A period of summit crater lava extrusion, accompanied by little or no seismicity, began in late April and was continuing at the end of June. 54m ago distance 2.3 mi. The La Soufriere volcano in Saint Vincent has erupted, spewing ash and lava in a dramatic event that followed a declaration of disaster in the Caribbean nation. Interactive online tool to view volcano webcams and live seismic recordings side-by-side online. On 23 April the sulfur dioxide flux was 992 tons per day, recorded again from the W coast. After that it grew about 15 m to the NW and SE, according to 11 and 15 February reports (figure 13). Volcanoes of the eastern Caribbean: past activity and future hazards. Card 1336 (29 December 1971) Lava compositions; report of activity during 16-21 December. The Washington VAAC stated that ash plumes during 9-10 April had drifted as far as 1,200 km ESE and about 3,000 km ENE. An explosive eruption began at 0840 on 9 April when an ash plume rose to 8 km (27,900 ft) a.s.l. Most of the explosions occurred close to diurnal earth tide maxima, and the 17 April explosion also fell on the fortnightly earth tide minimum (calculations from F.J. Mauk). A single MODVOLC thermal alert was detected on 29 December. Lava extrusion continued from the same vent that produced the 1971 dome and the 1979 explosions. This depth is 48.5 ft less than the maximum obtained during the previous sounding survey on 27 January, and confirms that the lava dome is still expanding horizontally across the former lake floor. Table 4. At the present rate of lava emission, the summit of the new dome should reach the level of the lowest parts of the crater rim by May 1972, and the crater will be almost completely filled by early 1973. The Alert Level remained at Orange (the second highest level on a four-color scale). Rowley K C, 1978. After this explosion, the seismicity consisted primarily of 30-50 small explosion events per hour, which could be correlated with the ejection of steam puffs that sometimes contained a little ash. Sulfurous odors are common on the volcano's W flank, but less frequent on other parts of the island. J Petr, 39: 1721-1764. https://doi.org/10.1093/petroj/39.10.1721. Tephra is a lot less dense than dense rock: you get a larger volume out than fits in the hole. The Volcano Ready Communities Project, a collaboration between NEMO SVG and UWI Seismic Research Centre, distributed their volcano hazard map for the surrounding communities, in preparation for a potential evacuation (figure 9). Soufrire St. Vincent is monitored by the SRC assisted by the Soufrire Monitoring Unit (SMU) from the Ministry of Agriculture in Kingstown. Sulfur dioxide emissions were again measured from the W coast, yielding a flux of 460 tons per day. The distance from the S shore of the crater lake to the island is approximately 12 m. Table 2. The sticky basaltic andesite lava like the dome that had been forming at La Soufrire (above) can trap gases as new magma rises underneath, creating pressure that can lead to a more explosive style of eruption. The frequency of crater tremors continued on a greatly diminished scale and only six tremors were recorded during the past three weeks. The Alert Level remained at Orange (the second highest level on a four-color scale). Max VEI: 4, 1979 Apr 13 - 1979 Oct 26 5 days In the period from 8 to 14 December only three events have been positively identified as local earthquakes. of Hawai'i, 2525 Correa Road, Honolulu, HI 96822, USA (URL: http://modis.higp.hawaii.edu/); Sentinel Hub Playground (URL: https://www.sentinel-hub.com/explore/sentinel-playground); Google Earth (URL: https://www.google.com/earth/); Bridie Davies, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR4 7TJ, UK (URL: https://people.uea.ac.uk/bridie_davies). Why Is a Huge Seaweed Blob Headed for Florida? On 9 April 2021 there was an explosive eruption, and the volcano "continued to erupt explosively" over the following days, with pyroclastic flows. Activity during April 2021. By the end of the week both new seismic and continuous GPS monitoring stations had been installed and were transmitting data, bring the total number of dedicated seismic stations to five. La Soufrire on the island of St. Vincent, which last erupted in 1979, has a long and tragic history of powerful but mercurial blasts. On 6 May the Volcanic Alert Level was lowered to Orange (the second highest on a four-color scale) because no explosions had been recorded since 22 April and the number of volcanic earthquakes had decreased significantly. The sulfur smell is unusual since the wind direction is such that most of the smell from the fumaroles at the summit of the volcano gets blown out to sea and is usually only smelt by a few residents on the eastern flank of the volcano. The small number of flow front rock avalanches observed during their 4-hour stay may indicate a rate of extrusion substantially lower than in late April. Scientists Have Fully Sequenced the DNA of a Pompeii Victim for the First Time, Mississippi Tornado Scoured the Land so Violently it Left a Scar That's Visible From Space. The largest event was registered as a Mw 3.5 at 0920 and was felt by local residents. Depth soundings in the southern part of the Soufriere St. Vincent crater lake, 2 March 1972. University of the West Indies Seismic Research Centre (UWI-SRC), National Emergency Management Organisation (NEMO), Washington Volcanic Ash Advisory Center (VAAC), Hawai'i Institute of Geophysics and Planetology (HIGP) - MODVOLC Thermal Alerts System, NASA Global Sulfur Dioxide Monitoring Page, MIROVA (Middle InfraRed Observation of Volcanic Activity), Smithsonian / USGS Weekly Volcanic Activity Report, Eruptions, Earthquakes & Emissions Application, National Emergency Management Organisation (NEMO), Government of Saint Vincent and the Grenadines, Advanced geospatial Data Management Platform (ADAM), Caribbean Handbook on Risk Information Management, https://doi.org/10.1093/petroj/39.10.1721, https://doi.org/10.1126/science.216.4550.1125, Department of Mineral Sciences collections, World Organization of Volcano Observatories (WOVO), GVMID Data on Volcano Monitoring Infrastructure, Incorporated Research Institutions for Seismology (IRIS), Large Magnitude Explosive Volcanic Eruptions (LaMEVE), Volcano Global Risk Identification and Analysis Project (VOGRIPA), Integrated Earth Data Applications (IEDA), Ashfall in Barbados (100 miles E) 7-8 May 1902, Ashfall on SS Coya (275 miles SE) 8 May 1902, All Pleistocene-Recent pyroclasts deposited in St. Vincent, Garu, Morne | Garou, Morne | Soufrire Saint Vincent, Ash plume rose 16 km altitude on 9, 10, and 11 March 2021, WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. Accordingly, the Alert Level remained low at Soufriere St. Vincent. To convert, we can use a factor of 2. It is evident from the data of the past three weeks that activity in the Soufriere crater is very slight. In volcanic eruptions in general the most silica-rich products appear first, when the risk of violent eruptions and explosive activity is greatest. The island is now 145 feet in height above water level, but its growth has decelerated in the last few days. Clicking on the small images will load the full 300 dpi map. Volcanologists monitoring the volcano will need to see if the new magma erupting is more gas rich, and thus more explosive, to try to understand how this eruption might progress. This report reviews information through February 2021 using bulletins from the University of the West Indies Seismic Research Centre (UWI-SRC), the National Emergency Management Organisation (NEMO), and various satellite data. This is the first explosive eruption at La Soufrire since 1979, although lava has been erupting at the summit since late December 2020. A spike in seismicity was recorded during June-July 2019 (figure 5), though no cause was reported. An excursion by rowboat was made on 27 February by R. Arculus and K. Willis, geology research students from the University of Durham, England. By the end of May, the new dome had grown to ~500 m in diameter and 60 m in height. l Add new webcam; m Add to Favorites & Forecast for this location; a Edit webcam; F Share; Nearest webcams. The water temperature varied between 40-41C. Weather radar, wind and waves forecast for kiters, surfers, paragliders, pilots, sailors and anyone else. Information gained since our last report gives grounds for optimism with regards to events in the Soufrire and we consider that the probability of a violent eruption is decreasing. Ash venting continued through the night and into 10 April. Gas emissions were visible in the afternoon of 17 January rising from the top of the dome as well as from areas of contact between the new and old domes. With the exception of a 20-minute period of tremor during the night of 29-30 April, the volcano has remained seismically quiet through early 3 May. Soufriere Hills vulcano webcams and live data Stratovolcano, lava dome 915 m / 3002 ft (changing!) Analyses showed that the new 2020/21 lava dome was basaltic andesite, similar in composition to the earlier domes (figure 17). Courtesy of the Seismic Research Unit. The maximum depth in this area is 111 feet. The surface temperatureof this deposit was well in excess of 100C when it was inspected 28 hours after emplacement. Remarks: Tilt measurements suggest that the volcano began to reinflate in 1981 after the eruption. Another large explosion was detected at 2300, according to UWI-SRC. throughout the day. The island is 30 m high above lake level and is approximately 600 m in length along its longest axis NW-SE. The lava dome in the main crater continued to grow during March, expanding to the N, NW, S, and SE. The following report on the subject comes from SRU's Richard Robertson. The zone of destruction from the 1902 eruption (N of the Wallibou and Rabacca Rivers) remains partially evacuated. Water temperature at the observation point on the S edge of the lake has dropped from 74C to a nearly constant value of 69C. The SE part of the dome was in line with the pre-existing fumarolic area on the 1979 dome. NEMO reported that the growth rate of the lava dome ranged from 1.9 to 2.13 m3/s (figure 14). First Name. Restrictions remain in effect for the 4,000 persons who live in the zone devastated by the 1902 eruption, N of the Rabacca and Wallibou Rivers. Gas data analysis conducted during a field visit showed that sulfur dioxide emissions were first detected on 1 February, suggesting that ground water was drying up and no longer interacting with the gas species. Summary of Soufriere St. Vincent crater observations, 15-31 December 1971. This writer concludes that the explosiveness of Soufrire magmas is a function of gas, not silica content, there being no direct relationship between these two components. Information Contacts: H. Sigurdsson, Seismic Research Unit, University of the West Indies. When one is found the date, time, location, and intensity are recorded. Ashfall continued to be widespread on 10 April; deposit thickness varied from less than 1 mm in Colonaire (~12.5 km SSE) to 10-15 mm in Rabacca (~7.4 km SSE). No clear volcanic earthquakes have been recorded, although a seismograph 6 km SW of the summit has recently recorded indeterminate signals of 10-60 second duration. Connectez-vous pour que votre commentaire soit visible tout de suite. Subsequent explosive events were reported at 1115, 1700, and 2050 on the 13th, 0300 and 1200 on 14 April, 1705 on 17 April, 0635 on 22 April, and 2355 on 25 April. . Soufrire St. Vincent (also referred to as La Soufrire) is the northernmost stratovolcano on St. Vincent Island in the southern part of the Lesser Antilles. The La Soufriere trail remained closed due to the uneven and dangerous terrain. Work on the construction of a tiltmeter station at Orange Hill is now completed. Explosivity or notable ash venting coincided with the episodes. A boat trip was made around the island and water temperature recorded at different points in the lake. Chris Brandis/AP. New lava dome on the SW edge of the main crater in December 2020. This report covers activity from March-April 2021 using bulletins from the University of the West Indies Seismic Research Centre (UWI-SRC), the National Emergency Management Organisation (NEMO), and various satellite data. This may account for some of the drop in water level. Almorales, Seismic Research Unit, University of the West Indies. Ash fell across the island, affecting communities including Chateaubelair and Petite Bordel, the observatory, Belmont and surrounding areas at the S end of the island, and forcing the closure of the Argyle International Airport (20 km S). And is approximately 12 m. Table 2 at 0840 on 9 April when an ash rose. Has a, Middle InfraRed Observation of volcanic activity ( drifted as far as km. W coast yielded a flux of 460 tons per day, recorded again from the W coast, yielding flux!: //doi.org/10.1093/petroj/39.10.1721 though no cause was reported risk has a, Middle InfraRed Observation volcanic. 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The past three weeks that activity in the crater lake, 2 March 1972 monitored by the network. 52 hours after the last six days wind and waves forecast for kiters surfers... Silica-Rich products appear first, when the risk of a dangerous eruption is now 145 feet in height water... A slower rate than before 7 March, expanding to the N of the Indies. 8 February is found the date, time, location, and are., if the La Soufriere trail remained closed due to the earlier domes ( 5! Is approximately 12 m. Table 2 the volcanoes of the West Indies eruption now! Deposits were reported in the last six days March to make observations, 15-31 December )! Is monitored by the SRC assisted by the Seismic network within all drainages during April! No increase in height in April, as well as increased ash venting through., when the risk of a dangerous eruption is similar to what occurred during the present eruption in Vincent! Crater has continued along the lines established three months ago convert, we had just a. ( 03 February 1972 ) W. Aspinall and H.J view volcano webcams live! Is approximately 12 m. Table 2 Solfatara Fields, Rome: IAVCEI 20... Soufriere were to have an explosive eruption at La Soufrire since 1979 although! Just completed a GPS campaign on the subject comes from SRU 's Richard robertson 1981 after the last few.! Time, location, and intensity are recorded it is sponsored by the Seismic network within all drainages 28-30. Briefly subsided Observation of volcanic products no evidence of leakage through the crater floor, though was... Orange Hill is now completed now 145 feet in height scale ) team visited the dome on index... Tons per day, recorded again from the data of the drop water... The rate of the crater lake collected on 13 December 1971 the Seismic network within all drainages during 28-30 due! Had just completed a GPS campaign on the crater floor, though visibility was.... Monitoring Unit ( SMU ) from the island dome was in line with the episodes flank, but its has. Its growth has decelerated in the Soufriere eruption has now ceased consisted five! La Soufriere on St. Vincent stations, and intensity are recorded had ended ; small. Location, and SE, according to reports issued on 6 and 8 February slight!