The Alert Level remained at Orange (the second highest level on a four-color scale). Webcam provided by windy.com - add a webcam, JavaScript Disabled - Advanced Features Not Available - Please revisit this page with a JavaScript aware web browser for full functionality, Copyright 2008/2023 - WebKams - All Rights Reserved. Ashfall was observed in most areas of the St. Vincent Island, as well as on neighboring islands of the Grenadines (SSW), Barbados (165 km E), and Saint Lucia (50 km NNE). Sources: University of the West Indies Seismic Research Centre (UWI-SRC); National Emergency Management Organisation (NEMO), Government of Saint Vincent and the Grenadines; Advanced geospatial Data Management Platform (ADAM). Dome survey shows expansion; growth rate slows in March, Card 1364 (07 March 1972) Crater observations, 17-28 February. Basse-Terre North. La Fortuna - Arenal. Thermal satellite data. These are not felt; they are instrumental, that is, recorded. . All Rights Reserved. Green Fig Resort & Spa Upper Palmiste Road Soufriere, St. Lucia. This indicates that the activity has now shifted almost entirely to the N end of the lava island. Observations. Small earthquakes associated with dome growth were recorded on 7 April. volcano started emitting a tall grey-tan plume, of volcanic ash into the air above the small island. No comprehensive survey of the island has been carried out during this period but from visual observation the general shape is still as previously described. On 9 April 2021 there was an explosive eruption, and the volcano "continued to erupt explosively" over the following days, with pyroclastic flows. Click on the index link or scroll down to read the reports. The temperature was 46C on 7 May and 41C on 11 May. Magmagenesis at Soufriere volcano, St Vincent, Lesser Antilles Arc. Further References. Robertson R, 2005. When one is found the date, time, location, and intensity are recorded. Satellite data showed about 0.4 teragrams (Tg) of SO2 in the plume on 10 April, with some stratospheric injection. The dome had an estimated volume of 5.93 million cubic meters. Major explosive eruption; 17,000 evacuated. Most of the more than 17,000 evacuees were allowed to return to their homes on 14 May, including residents of the two largest towns near the volcano, Georgetown and Chateaubelair. Watch volcanoes live and catch an eruption in action! A second period of vigorous ash venting began at 1445 and initially rose about 4 km (13,100 ft) a.s.l. MIROVA (Middle InfraRed Observation of Volcanic Activity) analysis of MODIS satellite data shows the beginning of thermal activity in late December 2020 and continuing at a lower power into early February (figure 15). Seismic activity is low, and limited to one crater tremor per day on the average. On 22 March the western summit of the island was the highest point, 226 feet. This is the first explosive eruption at La Soufrire since 1979, although lava has been erupting at the summit since late December 2020. In addition, 40-60 minor seismic events are being reported every 24 hours by high-gain seismographs close to the crater rim. 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). Explosions and seismicity end; new lava dome in summit crater. Depth soundings in the southern part of the Soufriere St. Vincent crater lake, 2 March 1972. Correct Sainte-Anne - Panoramic view 49 km (30 mi) St. John's - Deepwater Harbour 127 km (78 mi) Les Anses-d'Arlet 177 km (109 mi) . Card 1388 (02 May 1972) Crater situation unchanged in over a month. 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. Get unlimited access for as low as $1.99/month, The volcanoes of the West Indies have produced some of the. Between 50 and 200 very small local earthquakes continued to be recorded daily by the summit seismic station, but very few were detected by seismometers on the flanks. The period of tremor lasted until about 2100 and was followed by ongoing small LP and hybrid events. 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. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility. The occurrence of crater tremors was practically zero, with one tremor recorded during the last two weeks. and drifted W. A three-minute period of high-level tremor started at the same time and was flowed by over two hours of lower-level tremor. 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 grow during 13-19 January. The situation in the crater remains the same as it has been for more than a month. Scientists observed the western coastline later in the day and noted that pyroclastic flows had descended all valleys from Larikai (W) to Wallibou, a stretch about 5 km long. | February Information Contacts: University of the West Indies Seismic Research Centre (UWI-SRC), University of the West Indies, St. Augustine, Trinidad & Tobago, West Indies (URL: http://www.uwiseismic.com/); National Emergency Management Organisation (NEMO), Government of Saint Vincent and the Grenadines, Bise, PO. The dome summit was 295 ft. above current lake level on 27 February. Manage Settings SYNOP codes from weather stations and buoys. They recorded temperatures around 590 degrees Celsius from the expanding dome front. University of the West Indies Seismic Research Centre (UWI-SRC) and National Emergency Management Organisation (NEMO) reported that the effusive eruption at Soufrire St. Vincent (often simply referred to as "La Soufriere") became explosive on 9 April after a period of increased seismicity, gas emission, and rapid dome growth. Confirmed Eruption Work on the construction of a tiltmeter station at Orange Hill is now completed. Confirmed Eruption According to a news article, residents of the island of St.Vincent reported smelling sulfur in towns as far S as Kingstown. Staff members of the Soufrire Monitoring Unit (SMU) made visual observations of the crater on 16 December and reported minor changes in fumarolic activity and a small lake on the E side of the crater floor. Earthquakes have been recorded on our seismograms for the last five days, between 10 and 18 events per day. 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. National Emergency Management Organisation (NEMO) reported that activity at Soufrire St. Vincent had been low over the previous few months. The period of tremor lasted until about 2100 and was followed by ongoing small VT, LP, and hybrid earthquakes. NEMO noted that the total number of displaced people was 22,759 on 15 May though the number continued to fluctuate as people arrived at shelters while others returned home or changed locations. | June The Soufrire St. Vincent volcano's activity continues at decreasing values since the last explosive eruption on 22 April and all monitoring data indicate the end of the eruptive episode. The VAAC reported that ash plumes rose to 12.2-16 km altitude throughout the day and continued to drift long distances to the ENE, E, and SE. Operator: madinina.webcam Webcam Tartane, Martinique - 63.5 miles from Soufriere: La Caravelle Operator: madinina.webcam MIROVA (Middle InfraRed Observation of Volcanic Activity) analysis of MODIS satellite data detected a single thermal anomaly during mid-March 2021, followed by a brief break in activity (figure 34). St. Vincent. Sources: University of the West Indies Seismic Research Centre (UWI-SRC); National Emergency Management Organisation (NEMO), Government of Saint Vincent and the Grenadines; Simon Carn; Reuters; UN News Centre; Montserrat Volcano Observatory (MVO); ReliefWeb; Capella Space; Nation News; Caribbean Handbook on Risk Information Management. The water temperature continues to decrease with minor fluctuations. When the summit was not obscured by clouds, gentle but continuous steam emission was visible. Persistent gas-and-steam emissions were observed rising above the dome, as well as from the contact between the 2020/21 and 1979 domes during the rest of the month and through February. References: Cole P D, Robertson R E A, Fedele L, Scarpati C, 2019. Trees brought down by lahars reached the ocean, where the floating logs created a hazard for small boats along the coastline. A single rockfall event was detected at 0139, possibly due to the growing lava dome, though there was no visual confirmation. Confirmed Eruption An excursion by rowboat was made on 27 February by R. Arculus and K. Willis, geology research students from the University of Durham, England. A series of powerful explosions from Soufrire produced large ash clouds and several pyroclastic avalanches, forcing the evacuation of more than 17,000 persons from the N end of St. Vincent. A NASA P-3 Electra aircraft, equipped with lidar, a 10-stage quartz-crystal microbalance, and an NO2 remote-sensing instrument, flew through the periphery of the 17 April cloud minutes after it was ejected. Seismic activity gradually increased through the day, and by 1900 about 15 clearly identifiable earthquakes, apparently B-type, were occurring per hour. The number of crater tremors is practically zero. Revegetation of the areas devastated by the 1979 eruption had begun by mid-June. K-Ar geochronology of volcanic rocks of St. Vincent, the Lesser Antilles. Recorded eruptions date back to 1718, with notable eruptions occurring in 1812, 1902, and 1979. Information Contacts: Card 1388 (02 May 1972) J.B. Shepherd and W.P. High-level seismic tremor began at 1109 and lasted for about 20 minutes. When these data are analyzed and integrated, the geophysical community can look forward to an unusually well-documented account of an episode of explosive island-arc volcanism. By 12 February the it was 90 m tall, 618 m long, 232 m wide, and had an estimated volume of 6.83 million cubic meters. Observations made during a field visit on 5 January, during a helicopter overflight on 6 January, and based on 9 January drone video noted that the new dome was expanding to the W on the WSW edge of the 1979 lava dome and continued to gradually grow through February 2021 (figure 10). The Alert Level remained at Orange (the second highest level on a four-color scale). Accordingly, SRU did not think it necessary to update their website since it was so insignificant"'a 10 day wonder' as they say in the West Indies, or a 'pseudo-crisis.'" Seismicity dropped to low levels after the explosion on 22 April and remained low through 27 April; only a few VT, LP, and hybrid earthquakes were recorded. Almost constant swarms of long-period and hybrid events were recorded through the day, punctuated by three brief episodes (less than 30 minutes) of low-level tremor. Analyses showed that the new 2020/21 lava dome was basaltic andesite, similar in composition to the earlier domes (figure 17). Nous nous rservons le droit de bloquer, de supprimer et de modifier des commentaires dont les contenus sont illgaux ou considrs comme insultants. Gas-and-steam plumes were also visible from Belmont Observatory. That visit found nothing out of the ordinary. During that time the dome grew and expanded to the W, produced small, hot rockfalls, had a blocky appearance, and continued to emit gasses and steam. Some of the several thousand evacuees work in the area during the day, but most leave at night. Major mud flows that traveled down the larger valleys (mostly on the W side of the volcano) carved deep, narrow canyons, dramatically exposing pre-1979 valley fill deposits. Soufrire St. Vincent is monitored by the SRC assisted by the Soufrire Monitoring Unit (SMU) from the Ministry of Agriculture in Kingstown. These earthquakes were more intense and averaged 50/hour; the 23-25 March swarm averaged 1.5/hour. Soufrire St. Vincent is monitored by the SRC assisted by the Soufrire Monitoring Unit (SMU) from the Ministry of Agriculture in Kingstown. Sulfur dioxide plumes reached India. This drop can be accounted for entirely by evaporation and there is no evidence of leakage through the crater wall. At 1400 the rate of the earthquakes started to decline and then significantly dropped at 1600, though small VT events continued through 1800. The N part of this valley is the most actively steaming area of the dome. The observers noted that the small black-colored dome had grown on the WSW edge of the 1979 lava dome. SO2 measurements taken from a boat on the W coast yielded a flux of 1,036 tons/day. . By 26 March the period of elevated VT earthquakes had ended; only small, low-frequency events associated with lava dome growth were recorded. The highest point on the island is still 226 feet relative to the 3 November datum. The dome continued to grow during 27 January-2 February. During 15-19 April NEMO reported details about the people that have evacuated. J. Tomblin reports the following. 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 change in character of an eruption like this is not uncommon. 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. 2020 Dec 27 - 2021 Apr 22 Information Contacts: W. Aspinall, K. Rowley, J. Shepherd, and J. Tomblin, UWI; K. Krafft, Cernay, France; H. Lamb, Univ. There were no casualties caused by the eruption. 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. Confirmed Eruption, 0530 BCE 75 years The water temperature at the lake edge, which remained constant between 56-60C during the previous four weeks, dropped to a new low of 53.5C on February 27. Shepherd, J.B., Aspinall, W.P., Rowley, K.C., and others, 1979, The eruption of Soufrire Volcano, St. Vincent April-June 1979: Nature, v. 282, p. 24-28. Products of later stages of an eruption have a lower silica content and are less explosive. Pyroclastic flows descended several valleys on the S and W flanks, reaching the coast at Morne Ronde (4.3 km W), Larikai (3.5 km WNW), and Trois Loupes Bay (3.5 km NW). As a result, the Volcanic Alert Level (VAL) was raised to Orange (the second highest level on a four-color scale) on 29 December (figure 8). The situation at the crater has maintained the current pattern over the past seven weeks. Science, 216(4550), 1125-1126. https://doi.org/10.1126/science.216.4550.1125. The largest event, a M 3.5, was recorded at 0920 and felt by local residents. Information Contacts: R. Fiske, SI; H. Sigurdsson, Univ. Deformation studies on Soufriere, St. Vincent, between 1977 and 1981. The installation of instruments, initial adjustments, and readings to establish reference levels is scheduled for the next two weeks. Scientists observed damaged vegetation, likely caused by fire, on the NW part of the crater (just N of the dome). As a result, more than 20,000 people were evacuated. These indicate that the dome is approximately circular in plan at water level with dimensions on 11 February of 590 m (1,970 ft) from N to S, and 540 m (1,800 ft) from E to W. On 28 February, a re-triangulation by theodolite was carried out by R. Waters of the Directorate of Overseas Surveys. For the first time sulfur dioxide emissions were successfully measured by ground-based instruments; scientists recorded 809 tons per day from a Coast Guard boat along the W coast. The viscosity of the new lava is high so that even if the dome grows to the point at which its flanks overlap the present crater rim, it is unlikely that molten lava will escape down the mountainside. Occasional satellite images of the summit showed a series of changes to the new crater, centered in the SW part of the summit crater. Unpublished PhD thesis, Univ West Indies, 282 p. Shepherd J B, 1989. Sulfurous odors are common on the volcano's W flank, but less frequent on other parts of the island. That makes the current eruption 2.4 x 10 8 m. - Part I.. This is the first time the volcano has erupted since 1979. On 23 April the sulfur dioxide flux was 992 tons per day, recorded again from the W coast. 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. A swarm of volcano-tectonic (VT) earthquakes began at 0638 on 5 April. Water continues to evaporate from the lake thereby reducing the lake level fractionally; the color of the water is now clearer and more translucent indicating that the sediments disturbed by the initial eruptive activity are resettling. When the lake was at its highest level on November 20th, it was thus some 92.5 feet above the normal pre-eruption level. "We quickly determined that the reported 'activity' was due to an unusual southerly wind combined with the phenomena of Sahara dust which is common around this time of the year in St. Vincent and which results in very hazy conditions. Summary of depth and temperature measurements in the Soufriere St. Vincent crater lake, 21 December 1971. An island 100 m in diameter and 2 m high appeared in the lake center on 20 November. A series of explosive eruptions in 1979 destroyed the 1971 dome and ejected the lake; a new dome was then built. 2021: January Approximately 7 m of this increase is apparent and not real, i.e., due to the drop in water level between 11-27 February. Remarks: Rapid deflation of more than 20 microradians occurred during the eruption. Table 4 contains mean values for all available wet chemical analyses of Soufrire rocks, summarized from UWI Seismic Research Special Publication No. Additional satellite data. Additionally, a new GPS monitoring station was placed in Fancy. of Rhode Island. The swarm was more intense than the previous one, with an average rate of about 50 earthquakes per hour compared with 1.5 per hour during 22-25 March. The dome dimensions were estimated to be 340 m long, 160 m wide, and 90 m high. "From the above it is clear that there is no significant difference in silica content between lava flow and pyroclastic material erupted from the Soufrire Volcano. 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. This showed that the dome had expanded to 640 m (2,130 ft) in N-S diameter at water level and 590 m (1,970 ft) from E to W. This represents an increase in both horizontal dimensions at water level by 50 m in the last 17 days. Crater tremors were of the order one a day since 7 March, but none have been recorded since 1 April.". This may account for some of the drop in water level. Webcams in the region of Soufriere, Saint Lucia The List of Webcams near Soufriere, Saint Lucia: Webcam Saint-Pierre, Martinique - 62.3 miles from Soufriere: Seaview - Webcam des pontons de Saint-Pierre dans le Nord Martinique. Max VEI: 0, 1718 Mar 26 (?) The new lava is significantly more basaltic, i.e., lower in silica (55.3%) than the products of the most violent phases of the 1902 eruption, which were more andesitic in composition, with silica content of 56-58%. Rate of lava extrusion in the summit crater of Soufrire St. Vincent, 25 May-25 October 1979, calculated by John Tomblin. A single MODVOLC thermal alert was detected on 29 December. The number of individual events declined irregularly through the morning of 16 April. The SO2 plume initially fanned out to the NE, E, and SE across the Atlantic Ocean. The current eruption is a mild one and involves the growth of a volcanic dome. According to National Emergency Management Organisation (NEMO) the total number of displaced people was 13,154 by 21 April, with 6,208 people in 85 public shelters and 6,790 people (1,618 families) in private shelters. all webcams provider's website. 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 31 March-6 April, expanding to the N and S. Gas-and-steam continued to rise from the top of the dome, as well as along the contact with the pre-existing 1979 dome. The eruption of 1979 was characterized by ashfall, pyroclastic flows, and lahars, in addition to a series of Vulcanian explosions during 13-26 April 1979 that destroyed the lava dome in the summit crater, which had formed during a 1971 effusive eruption (SEAN 04:04). Continuous harmonic tremor began to build an hour later, and within 2 hours was saturating the seismometers. An area of burnt vegetation extended from the dome along the W part of the crater floor. 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). Most of the evidence tends to suggest that there is a slight new lava being extruded at a slower rate into the crater, but whether this decrease in activity is temporary or not is too early to comment on at this stage. 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. Basse Terre North East: La Soufriere Volcano is a live webcam located in the destination of Gourbeyre, Guadeloupe. Water was sometimes present in the crater, especially after heavy rains, but the volume of water remained small and water depths did not exceed ~1 m. Extrusion of lava into Soufrire's summit crater continued through September. Calderas of gravity-slide structures in the Lesser Antilles Island Arc?. of Hawai'i, 2525 Correa Road, Honolulu, HI 96822, USA (URL: http://modis.higp.hawaii.edu/); NASA Global Sulfur Dioxide Monitoring Page, Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center (NASA/GSFC), 8800 Greenbelt Road, Goddard, Maryland, USA (URL: https://so2.gsfc.nasa.gov/); MIROVA (Middle InfraRed Observation of Volcanic Activity), a collaborative project between the Universities of Turin and Florence (Italy) supported by the Centre for Volcanic Risk of the Italian Civil Protection Department (URL: http://www.mirovaweb.it/); Sentinel Hub Playground (URL: https://www.sentinel-hub.com/explore/sentinel-playground); Jenni Barclay, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR4 7TJ, UK (URL: https://research-portal.uea.ac.uk/en/persons/jenni-barclay); Ian Renfrew, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR4 7TJ, UK (URL: https://research-portal.uea.ac.uk/en/persons/ian-renfrew). During the period 13-26 May 1972, the situation at the crater continued along the lines stated in the last report. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. In a 22 April press release the Argyle International Airport announced that the ash cleanup was ongoing and that the Cargo Terminal was scheduled to open the next day. This may be a local phenomenon, due to relatively small output of lava into the southern part of the lake in the last few days, and we believe that other inaccessible regions of the lake are hotter. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. We determined very early on that nothing serious was happening, since we have seismic stations both on the volcano and throughout the island [figure 3], none of which had recorded any increased seismicity. SO2 measurements taken near the W coast showed an average flux of 350 tons/day. Gas-and-steam plumes were often visible from Belmont Observatory, on Richmond Peak, about 6 km SSW of the crater. The seismic station at Bamboo Range recorded a lahar on 20 April at 0400 which lasted about 30 minutes and may have descended a SE-flank valley. Card 1336 (29 December 1971) Lava compositions; report of activity during 16-21 December. Explosions and pyroclastic flows were reported on 13 April, as well as lahars in the Sandy Bay area. Card 1366 (20 March 1972) J.B. Shepherd, Seismic Research Unit, University of the West Indies. The zone of destruction from the 1902 eruption (N of the Wallibou and Rabacca Rivers) remains partially evacuated. Compiled to display the locations of all hot spots detected in the plume on 10,... Read the reports hybrid events, initial adjustments, and 1979 composition to the growing lava dome though. 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