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Popocatepetl volcano (Mexico) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Centro Nacional de Prevención de Desastres (CENAPRED) reported that eruptive activity continued at Popocatépetl during 9-15 April. The seismic network recorded 18-94 long-period events per day on most days, accompanied by steam-and-gas emissions. In addition, the seismic network also recorded daily low-amplitude tremor, characterized by harmonic and high-frequency signals, with periods lasting from 11 minutes to five hours and 11 minutes.
A single volcano-tectonic earthquake was detected on 9 April. According to the Washington VAAC an ash plume was visible in webcam and satellite images on 10 April rising 6 km (20,000 ft) a.s.l. and drifting E.
The Alert Level remained at Yellow, Phase Two (the middle level on a three-color scale) and the public was warned to stay 12 km away from the crater.
Sources: centro nacional de prevencion de desastres (cenapred) (https://www.gob.mx/cenapred), washington volcanic ash advisory center (vaac) (http://www.ssd.noaa.gov/VAAC/messages.html)
---
From: Global Volcanism Program, 2025. Report on Popocatepetl (Mexico). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-341090). Smithsonian Institution and US Geological Survey.
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Popocatepetl volcano (Mexico) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Centro Nacional de Prevención de Desastres (CENAPRED) reported that eruptive activity continued at Popocatépetl during 9-15 April. The seismic network recorded 18-94 long-period events per day on most days, accompanied by steam-and-gas emissions. In addition, the seismic network also recorded daily low-amplitude tremor, characterized by harmonic and high-frequency signals, with periods lasting from 11 minutes to five hours and 11 minutes.
A single volcano-tectonic earthquake was detected on 9 April. According to the Washington VAAC an ash plume was visible in webcam and satellite images on 10 April rising 6 km (20,000 ft) a.s.l. and drifting E.
The Alert Level remained at Yellow, Phase Two (the middle level on a three-color scale) and the public was warned to stay 12 km away from the crater.
Sources: centro nacional de prevencion de desastres (cenapred) (https://www.gob.mx/cenapred), washington volcanic ash advisory center (vaac) (http://www.ssd.noaa.gov/VAAC/messages.html)
---
From: Global Volcanism Program, 2025. Report on Popocatepetl (Mexico). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-341090). Smithsonian Institution and US Geological Survey.
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Popocatepetl volcano (Mexico) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
Popocatepetl volcano (Mexico) news and eruption updates
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Reventador volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that eruptive activity continued at Reventador during 9-15 April. Seismicity included 60-106 daily explosions, long-period earthquakes, harmonic tremor, and tremor associated with emissions. Multiple daily ash-and-gas plumes rose 200-2,200 m above the crater rim and drifted mainly NW, SW, and W.
Webcams recorded multiple nightly instances of incandescent material descending the flanks as far as 1.1 km below the crater rim. During 8-9 April several pyroclastic flows were recorded, reaching more than 700 m below the crater on the SSW flanks. On the morning of 10 April a small lahar was recorded descending the S flank.
That same day, a pyroclastic flow traveled down the SSW flank. Webcam images on 11 April showed another pyroclastic flow descending the SSW flank, with another on 12 April reaching 500 m below the crater on the SW flank. Several pyroclastic flows on the SW flank reached 1 km below the crater on 13 April.
On 14 April two pyroclastic flows descended the SE flank as far as 800 m below the crater. Secretaría de Gestión de Riesgos maintained the Alert Level at Orange (the second highest level on a four-color scale).
Sources: instituto geofísico-escuela politécnica nacional (ig-epn) (http://www.igepn.edu.ec/), secretaría de gestión de riesgos (sgr) (http://www.gestionderiesgos.gob.ec/)
---
From: Global Volcanism Program, 2025. Report on Reventador (Ecuador). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-352010). Smithsonian Institution and US Geological Survey.
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Reventador volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that eruptive activity continued at Reventador during 9-15 April. Seismicity included 60-106 daily explosions, long-period earthquakes, harmonic tremor, and tremor associated with emissions. Multiple daily ash-and-gas plumes rose 200-2,200 m above the crater rim and drifted mainly NW, SW, and W.
Webcams recorded multiple nightly instances of incandescent material descending the flanks as far as 1.1 km below the crater rim. During 8-9 April several pyroclastic flows were recorded, reaching more than 700 m below the crater on the SSW flanks. On the morning of 10 April a small lahar was recorded descending the S flank.
That same day, a pyroclastic flow traveled down the SSW flank. Webcam images on 11 April showed another pyroclastic flow descending the SSW flank, with another on 12 April reaching 500 m below the crater on the SW flank. Several pyroclastic flows on the SW flank reached 1 km below the crater on 13 April.
On 14 April two pyroclastic flows descended the SE flank as far as 800 m below the crater. Secretaría de Gestión de Riesgos maintained the Alert Level at Orange (the second highest level on a four-color scale).
Sources: instituto geofísico-escuela politécnica nacional (ig-epn) (http://www.igepn.edu.ec/), secretaría de gestión de riesgos (sgr) (http://www.gestionderiesgos.gob.ec/)
---
From: Global Volcanism Program, 2025. Report on Reventador (Ecuador). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-352010). Smithsonian Institution and US Geological Survey.
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Reventador volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
Reventador volcano (Ecuador): eruption news & updates
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Sangay volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that moderate levels of eruptive activity continued at Sangay during 9-15 April. The seismic network recorded 45-125 daily explosions. Weather clouds often obscured views, but daily gas-and-ash plumes were visible rising 300-2,100 m above the summit and drifting in different directions.
Nighttime crater incandescence was often visible. During the night of 8 April several incandescent avalanches were detected 400 m below the crater rim. During the early morning of 11 April several incandescent eruptions were visible above the crater level.
A webcam image showed incandescent ejecta on the SE drainage. Secretaría de Gestión de Riesgos (SGR) maintained the Alert Level at Yellow (the second highest level on a four-color scale).
Sources: instituto geofísico-escuela politécnica nacional (ig-epn) (http://www.igepn.edu.ec/), secretaría de gestión de riesgos (sgr) (http://www.gestionderiesgos.gob.ec/)
---
From: Global Volcanism Program, 2025. Report on Sangay (Ecuador). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-352090). Smithsonian Institution and US Geological Survey.
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Sangay volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that moderate levels of eruptive activity continued at Sangay during 9-15 April. The seismic network recorded 45-125 daily explosions. Weather clouds often obscured views, but daily gas-and-ash plumes were visible rising 300-2,100 m above the summit and drifting in different directions.
Nighttime crater incandescence was often visible. During the night of 8 April several incandescent avalanches were detected 400 m below the crater rim. During the early morning of 11 April several incandescent eruptions were visible above the crater level.
A webcam image showed incandescent ejecta on the SE drainage. Secretaría de Gestión de Riesgos (SGR) maintained the Alert Level at Yellow (the second highest level on a four-color scale).
Sources: instituto geofísico-escuela politécnica nacional (ig-epn) (http://www.igepn.edu.ec/), secretaría de gestión de riesgos (sgr) (http://www.gestionderiesgos.gob.ec/)
---
From: Global Volcanism Program, 2025. Report on Sangay (Ecuador). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-352090). Smithsonian Institution and US Geological Survey.
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Sangay volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
Sangay volcano (Ecuador) eruption news & activity updates
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Santa Maria volcano (Guatemala) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported ongoing eruptive activity at Santa Maria’s Santiaguito dome complex during 9-15 April with continuing lava extrusion at Caliente dome. Daily explosions, as many as seven per hour when reported, generated gas-and-ash plumes that rose as high as 1.2 km above the dome and possibly drifted as far as 40 km S, E, SE, and NE. Effusion of blocky lava and collapses of material produced block avalanches that mainly descended the S, SW, and W flanks.
Collapsed material sometimes produced short pyroclastic flows that descended the flanks in all directions. Incandescence was visible at Caliente dome and upper part of the SW flank lava flow. On 9 April heavy rainfall generated lahars in the Tambor drainage (SSW) that carried blocks up to 1 m in diameter mixed with fine sediment, tree trunks, and branches.
A sulfurous odor was also reported. Ashfall was reported from Nuevo Palmar (12 km SSW) and Pueblo Nuevo to San Felipe (15 km SSW) and Loma Linda (7 km W) during 11-12 April and in Las Marías (9.5 km S), Calaguaché (9 km S), and Belén (10 km S) during 12-13 April.
Source: instituto nacional de sismologia, vulcanologia, meteorologia, e hidrologia (insivumeh) (http://www.insivumeh.gob.gt/)
---
From: Global Volcanism Program, 2025. Report on Santa Maria (Guatemala). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-342030). Smithsonian Institution and US Geological Survey.
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Santa Maria volcano (Guatemala) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported ongoing eruptive activity at Santa Maria’s Santiaguito dome complex during 9-15 April with continuing lava extrusion at Caliente dome. Daily explosions, as many as seven per hour when reported, generated gas-and-ash plumes that rose as high as 1.2 km above the dome and possibly drifted as far as 40 km S, E, SE, and NE. Effusion of blocky lava and collapses of material produced block avalanches that mainly descended the S, SW, and W flanks.
Collapsed material sometimes produced short pyroclastic flows that descended the flanks in all directions. Incandescence was visible at Caliente dome and upper part of the SW flank lava flow. On 9 April heavy rainfall generated lahars in the Tambor drainage (SSW) that carried blocks up to 1 m in diameter mixed with fine sediment, tree trunks, and branches.
A sulfurous odor was also reported. Ashfall was reported from Nuevo Palmar (12 km SSW) and Pueblo Nuevo to San Felipe (15 km SSW) and Loma Linda (7 km W) during 11-12 April and in Las Marías (9.5 km S), Calaguaché (9 km S), and Belén (10 km S) during 12-13 April.
Source: instituto nacional de sismologia, vulcanologia, meteorologia, e hidrologia (insivumeh) (http://www.insivumeh.gob.gt/)
---
From: Global Volcanism Program, 2025. Report on Santa Maria (Guatemala). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-342030). Smithsonian Institution and US Geological Survey.
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Santa Maria volcano (Guatemala) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
Santiaguito & Santa Maria volcano (Guatemala): news and activity updates
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Semeru volcano (Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity continued at Semeru during 9-15 April. Daily ash plumes rose 400-1,000 m above the summit and drifted SW, S, and NE; ash plumes were not visible on 13 April. White gas-and-steam emissions rose 100 m above the summit and drifted N, NE, and S on 10 April.
The Alert Level remained at 2 (the second lowest level on a scale of 1-4). The public was warned to stay at least 5 km away from the summit in all directions, 13 km from the summit to the SE, 500 m from the banks of the Kobokan drainage as far as 17 km from the summit, and to avoid other drainages including the Bang, Kembar, and Sat, due to lahar, avalanche, and pyroclastic flow hazards.
Source: pusat vulkanologi dan mitigasi bencana geologi (pvmbg, also known as cvghm) (http://vsi.esdm.go.id/)
---
From: Global Volcanism Program, 2025. Report on Semeru (Indonesia). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-263300). Smithsonian Institution and US Geological Survey.
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Semeru volcano (Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity continued at Semeru during 9-15 April. Daily ash plumes rose 400-1,000 m above the summit and drifted SW, S, and NE; ash plumes were not visible on 13 April. White gas-and-steam emissions rose 100 m above the summit and drifted N, NE, and S on 10 April.
The Alert Level remained at 2 (the second lowest level on a scale of 1-4). The public was warned to stay at least 5 km away from the summit in all directions, 13 km from the summit to the SE, 500 m from the banks of the Kobokan drainage as far as 17 km from the summit, and to avoid other drainages including the Bang, Kembar, and Sat, due to lahar, avalanche, and pyroclastic flow hazards.
Source: pusat vulkanologi dan mitigasi bencana geologi (pvmbg, also known as cvghm) (http://vsi.esdm.go.id/)
---
From: Global Volcanism Program, 2025. Report on Semeru (Indonesia). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-263300). Smithsonian Institution and US Geological Survey.
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Semeru volcano (Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
Latest news and updates about the volcanic activity of mt Semeru volcano, East-Java (Indonesia)
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Sheveluch volcano (Russia) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Kamchatkan Volcanic Eruption Response Team (KVERT) reported that lava extrusion may have continued at Sheveluch’s “300 years of RAS” dome on the SW flank of Old Sheveluch and at the Young Sheveluch dome during 3-10 April. Daily thermal anomalies over the domes were identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Dates are based on UTC times; specific events are in local time where noted.
Source: kamchatkan volcanic eruption response team (kvert) (http://www.kscnet.ru/ivs/kvert/index_eng.php)
---
From: Global Volcanism Program, 2025. Report on Sheveluch (Russia). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-300270). Smithsonian Institution and US Geological Survey.
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Sheveluch volcano (Russia) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Kamchatkan Volcanic Eruption Response Team (KVERT) reported that lava extrusion may have continued at Sheveluch’s “300 years of RAS” dome on the SW flank of Old Sheveluch and at the Young Sheveluch dome during 3-10 April. Daily thermal anomalies over the domes were identified in satellite images. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Dates are based on UTC times; specific events are in local time where noted.
Source: kamchatkan volcanic eruption response team (kvert) (http://www.kscnet.ru/ivs/kvert/index_eng.php)
---
From: Global Volcanism Program, 2025. Report on Sheveluch (Russia). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-300270). Smithsonian Institution and US Geological Survey.
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Sheveluch volcano (Russia) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
Shiveluch volcano (Kamchatka): news & eruption updates
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Stromboli volcano (Italy) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Sezione di Catania - Osservatorio Etneo (INGV) reported that eruptive activity continued at Stromboli during 7-13 April. Webcam images showed Strombolian activity at four vents in Area N within the upper part of the Sciara del Fuoco and from at least two vents in Area C-S (South-Central Crater) on the crater terrace. The vents in Area N continued to produce low-to-medium-intensity explosions at a rate of 5-15 events per hour, ejecting lapilli and bombs less than 150 m above the vents.
Explosions at the vents in Area C-S ejected tephra above the vent at a rate of 1-7 events per hour. The Alert Level remained at Orange (the second highest level on a four-level scale).
Source: sezione di catania - osservatorio etneo (ingv) (http://www.ct.ingv.it/)
---
From: Global Volcanism Program, 2025. Report on Stromboli (Italy). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-211040). Smithsonian Institution and US Geological Survey.
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Stromboli volcano (Italy) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
The Sezione di Catania - Osservatorio Etneo (INGV) reported that eruptive activity continued at Stromboli during 7-13 April. Webcam images showed Strombolian activity at four vents in Area N within the upper part of the Sciara del Fuoco and from at least two vents in Area C-S (South-Central Crater) on the crater terrace. The vents in Area N continued to produce low-to-medium-intensity explosions at a rate of 5-15 events per hour, ejecting lapilli and bombs less than 150 m above the vents.
Explosions at the vents in Area C-S ejected tephra above the vent at a rate of 1-7 events per hour. The Alert Level remained at Orange (the second highest level on a four-level scale).
Source: sezione di catania - osservatorio etneo (ingv) (http://www.ct.ingv.it/)
---
From: Global Volcanism Program, 2025. Report on Stromboli (Italy). In: Mayberry, G (ed.), weekly volcanic activity report 9 april-15 april 2025 (https://volcano.si.edu/showreport.cfm?doi=GVP.WVAR20250409-211040). Smithsonian Institution and US Geological Survey.
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Stromboli volcano (Italy) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 April-15 April 2025 (Continuing Activity)
Stromboli volcano (Italy): news and eruption updates
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Sangay Volcano Volcanic Ash Advisory: ONGOING VA EMS to 20000 ft (6100 m)
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Sangay Volcano Volcanic Ash Advisory: ONGOING VA EMS to 20000 ft (6100 m)
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Sangay Volcano Volcanic Ash Advisory: ONGOING VA EMS to 20000 ft (6100 m)
Sangay volcano (Ecuador) eruption news & activity updates
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Volcanoes Today, 17 Apr 2025: Sangay volcano, Nevado del Ruiz
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Volcanoes Today, 17 Apr 2025: Sangay volcano, Nevado del Ruiz
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Lewotobi Volcano Volcanic Ash Advisory: VA TO FL100 LAST REPORTED AT 17/0216Z EST VA DTG: 17/0240Z to 10000 ft (3000 m)
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Lewotobi Volcano Volcanic Ash Advisory: VA TO FL100 LAST REPORTED AT 17/0216Z EST VA DTG: 17/0240Z to 10000 ft (3000 m)
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Lewotobi Volcano Volcanic Ash Advisory: VA TO FL100 LAST REPORTED AT 17/0216Z EST VA DTG: 17/0240Z to 10000 ft (3000 m)
Lewotobi volcano (Flores, Indonesia): news & activity updates
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Volcanoes Today, 17 Apr 2025: Sangay volcano, Lewotobi, Nevado del Ruiz
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Volcanoes Today, 17 Apr 2025: Sangay volcano, Lewotobi, Nevado del Ruiz
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Ibu Volcano Volcanic Ash Advisory: VA TO FL070 LAST REP AT 17/0257Z EST VA DTG: 17/0340Z to 7000 ft (2100 m)
Satellite image of Ibu volcano on 17 Apr 2025
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Ibu Volcano Volcanic Ash Advisory: VA TO FL070 LAST REP AT 17/0257Z EST VA DTG: 17/0340Z to 7000 ft (2100 m)
Satellite image of Ibu volcano on 17 Apr 2025
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Ibu Volcano Volcanic Ash Advisory: VA TO FL070 LAST REP AT 17/0257Z EST VA DTG: 17/0340Z to 7000 ft (2100 m)
Ibu volcano, Halamhera island / Indonesia, volcano news
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Nevado del Ruiz Volcano Volcanic Ash Advisory: VA NOT OBS
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Nevado del Ruiz Volcano Volcanic Ash Advisory: VA NOT OBS
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Nevado del Ruiz Volcano Volcanic Ash Advisory: VA NOT OBS
Nevado del Ruiz volcano (Colombia): news & activity updates
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White Island volcano (New Zealand): elevated unrest sets alert level to 3
Despite limited direct observations in recent weeks, webcam images from Whakatāne and Te Kaha continue to show a rise in ash content within a steam and gas plume at Whakaari/White Island. Similarly, the MetService has detected small amounts of ash in the plume using satellite imagery. From the coast, this appears as a hazy trail extending downwind from the volcano. These signs point to a gradual increase in eruptive activity, prompting the Volcanic Alert Level to be raised to Level 3.
Recent observation and gas measurement flights, along with satellite data, confirm this gradual rise in ash emissions. Although the emissions remain minor, northerly winds can carry the gas and ash plume toward the coast, where residents may notice sulphur-like odours. At this time, ash fall is not expected to impact the Bay of Plenty coastline.
Observation flights have also revealed impact craters on the floor of the main crater, indicating that more explosive activity has occurred at times, with rocks being ejected several hundred metres from the vent. These types of explosive events are typical at Whakaari, often resulting from growing vents becoming temporarily blocked or experiencing increased gas pressure.
Monitoring data, including gas flight results, thermal infrared temperature readings, and sulfur dioxide (SO₂) levels observed via satellite, all show slight upward trends. These are consistent with increasing volcanic activity and more frequent ash emissions.
Steam, gas, and ash emissions remain variable, as they have for several months. Due to limited on-island monitoring, short-duration eruptions may be occurring unnoticed. Nonetheless, the recent activity aligns with low-level eruptive behavior, warranting the elevation of the Volcanic Alert Level to Level 3. The continued ash emissions mean the Aviation Colour Code remains at Orange, reflecting both the increased activity and the heightened uncertainty.
Source: Geonet New Zealand volcano activity update 17 April 2025
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White Island volcano (New Zealand): elevated unrest sets alert level to 3
Despite limited direct observations in recent weeks, webcam images from Whakatāne and Te Kaha continue to show a rise in ash content within a steam and gas plume at Whakaari/White Island. Similarly, the MetService has detected small amounts of ash in the plume using satellite imagery. From the coast, this appears as a hazy trail extending downwind from the volcano. These signs point to a gradual increase in eruptive activity, prompting the Volcanic Alert Level to be raised to Level 3.
Recent observation and gas measurement flights, along with satellite data, confirm this gradual rise in ash emissions. Although the emissions remain minor, northerly winds can carry the gas and ash plume toward the coast, where residents may notice sulphur-like odours. At this time, ash fall is not expected to impact the Bay of Plenty coastline.
Observation flights have also revealed impact craters on the floor of the main crater, indicating that more explosive activity has occurred at times, with rocks being ejected several hundred metres from the vent. These types of explosive events are typical at Whakaari, often resulting from growing vents becoming temporarily blocked or experiencing increased gas pressure.
Monitoring data, including gas flight results, thermal infrared temperature readings, and sulfur dioxide (SO₂) levels observed via satellite, all show slight upward trends. These are consistent with increasing volcanic activity and more frequent ash emissions.
Steam, gas, and ash emissions remain variable, as they have for several months. Due to limited on-island monitoring, short-duration eruptions may be occurring unnoticed. Nonetheless, the recent activity aligns with low-level eruptive behavior, warranting the elevation of the Volcanic Alert Level to Level 3. The continued ash emissions mean the Aviation Colour Code remains at Orange, reflecting both the increased activity and the heightened uncertainty.
Source: Geonet New Zealand volcano activity update 17 April 2025
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White Island volcano (New Zealand): elevated unrest sets alert level to 3
White Island volcano (New Zealand): news & activity updates
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Reventador Volcano Volcanic Ash Advisory: PSBL VA EMS to 14000 ft (4300 m)
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Reventador Volcano Volcanic Ash Advisory: PSBL VA EMS to 14000 ft (4300 m)
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Reventador Volcano Volcanic Ash Advisory: PSBL VA EMS to 14000 ft (4300 m)
Reventador volcano (Ecuador): eruption news & updates
📈 Sismo Recente:
🔺M 5.2 - 269 km SSE of Nusa Dua, Indonesia
Time2025-04-17 04:34:16 UTC2025-04-17 04:34:16 UTC at epicenterLocation11.170°S 115.818°EDepth10.00 km (6.21 mi)
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Terremotos: bit.ly/3MytAdn
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🔺M 5.2 - 269 km SSE of Nusa Dua, Indonesia
Time2025-04-17 04:34:16 UTC2025-04-17 04:34:16 UTC at epicenterLocation11.170°S 115.818°EDepth10.00 km (6.21 mi)
Relatório Completo
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Terremotos: bit.ly/3MytAdn
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Para acessar todos, clique em #sismos
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Volcanoes Today, 17 Apr 2025: Ibu volcano, Reventador, Sangay, White Island, Lewotobi, Nevado del Ruiz
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Volcanoes Today, 17 Apr 2025: Ibu volcano, Reventador, Sangay, White Island, Lewotobi, Nevado del Ruiz
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⚠️Governo dos EUA tem plano para cortar 40 mil milhões de dólares no Departamento de Saúde
#Boletim 17 04 2025
📄A Administração de Donald Trump está a planear cortar 40 mil milhões de dólares do orçamento do Departamento de Saúde dos Estados Unidos, onde já iniciou uma grande reforma, noticiou o Washington Post na quarta-feira.
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#Boletim 17 04 2025
📄A Administração de Donald Trump está a planear cortar 40 mil milhões de dólares do orçamento do Departamento de Saúde dos Estados Unidos, onde já iniciou uma grande reforma, noticiou o Washington Post na quarta-feira.
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⚠️Governo dos EUA ameaça impedir Harvard de matricular estudantes estrangeiros
#Boletim 17 04 2025
📄O Governo dos Estados Unidos ameaçou retirar à Universidade de Harvard "o privilégio de matricular estudantes estrangeiros", se não "cumprir integralmente os seus requisitos de informação".
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#Boletim 17 04 2025
📄O Governo dos Estados Unidos ameaçou retirar à Universidade de Harvard "o privilégio de matricular estudantes estrangeiros", se não "cumprir integralmente os seus requisitos de informação".
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World Earthquake Report for Thursday, 17 April 2025
Worldwide earthquakes above magnitude 3 during the past 24 hours on 17 Apr 2025Summary: 7 quakes 5.0+, 38 quakes 4.0+, 190 quakes 3.0+, 342 quakes 2.0+ (577 total)
This report is being updated every hour.
Magnitude 5+: 7 earthquakes
Magnitude 4+: 38 earthquakes
Magnitude 3+: 190 earthquakes
Magnitude 2+: 342 earthquakes
No quakes of magnitude 6 or higher
10 largest earthquakes in the world (past 24 hours)
#1: Mag 5.7 473 km northeast of hicks bay, gisborne, new zealand (https://www.volcanodiscovery.com/earthquakes/quake-info/21680203/mag3quake-Apr-16-2025-New-Zealand.html)
Wednesday, Apr 16, 2025, at 05:44 am (GMT -12) -
#2: Mag 5.6 maluku sea, 121 km south of manado, kota manado, sulawesi utara, indonesia (https://www.volcanodiscovery.com/earthquakes/quake-info/21681172/quake-felt-Apr-17-2025-Near-Modisi-North-Sulawesi-Indonesia.html)
Thursday, Apr 17, 2025, at 08:51 am (GMT +8) -
#3: Mag 5.6 south atlantic ocean, saint helena (https://www.volcanodiscovery.com/earthquakes/quake-info/21679472/mag5quake-Apr-16-2025-St-Helena-Southern-Mid-Atlantic-Ridge.html)
Wednesday, Apr 16, 2025, at 11:41 am (GMT -1) -
#4: Mag 5.5 gisborne, new zealand (https://www.volcanodiscovery.com/earthquakes/quake-info/21680173/mag3quake-Apr-16-2025-New-Zealand.html)
Wednesday, Apr 16, 2025, at 05:35 am (GMT -12) -
#5: Mag 5.2 indian ocean, 273 km south of nusa penida island, provinsi bali, indonesia (https://www.volcanodiscovery.com/earthquakes/quake-info/21681651/quake-felt-Apr-17-2025-Near-Denpasar-Bali-Indonesia.html)
Thursday, Apr 17, 2025, at 12:34 pm (GMT +8) -
#6: Mag 5.0 new zealand (https://www.volcanodiscovery.com/earthquakes/quake-info/21680523/mag5quake-Apr-16-2025-New-Zealand.html)
Wednesday, Apr 16, 2025, at 08:08 am (GMT -12) -
#7: Mag 5.0 south pacific ocean, 136 km east of neiafu, vava'u, tonga (https://www.volcanodiscovery.com/earthquakes/quake-info/21678769/mag5quake-Apr-16-2025-135-km-E-of-Neiafu-Tonga.html)
Wednesday, Apr 16, 2025, at 08:30 pm (GMT +13) -
#8: Mag 4.9 south pacific ocean, new zealand (https://www.volcanodiscovery.com/earthquakes/quake-info/21680482/mag2quake-Apr-16-2025-New-Zealand.html)
Thursday, Apr 17, 2025, at 07:57 am (GMT +12) -
#9: Mag 4.9 south pacific ocean, 490 km northeast of nuku'alofa, tongatapu, tonga (https://www.volcanodiscovery.com/earthquakes/quake-info/21681254/mag4quake-Apr-17-2025-Tonga.html)
Thursday, Apr 17, 2025, at 02:14 pm (GMT +13) -
#10: Mag 4.9 philippine sea, 402 km southwest of dededo village, dededo, guam (https://www.volcanodiscovery.com/earthquakes/quake-info/21680285/mag4quake-Apr-16-2025-Guam-Western-Caroline-Islands-Micronesia.html)
Thursday, Apr 17, 2025, at 03:14 am (GMT +9) -
Earthquakes reported felt
#1: Mag 3.3 itajobi, 21 km southwest of catanduva, catanduva, sao paulo, brazil (https://www.volcanodiscovery.com/earthquakes/quake-info/21679113/mag3quake-Apr-16-2025-Brazil.html) - 33 reports
Wednesday, Apr 16...
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World Earthquake Report for Thursday, 17 April 2025
Worldwide earthquakes above magnitude 3 during the past 24 hours on 17 Apr 2025Summary: 7 quakes 5.0+, 38 quakes 4.0+, 190 quakes 3.0+, 342 quakes 2.0+ (577 total)
This report is being updated every hour.
Magnitude 5+: 7 earthquakes
Magnitude 4+: 38 earthquakes
Magnitude 3+: 190 earthquakes
Magnitude 2+: 342 earthquakes
No quakes of magnitude 6 or higher
10 largest earthquakes in the world (past 24 hours)
#1: Mag 5.7 473 km northeast of hicks bay, gisborne, new zealand (https://www.volcanodiscovery.com/earthquakes/quake-info/21680203/mag3quake-Apr-16-2025-New-Zealand.html)
Wednesday, Apr 16, 2025, at 05:44 am (GMT -12) -
#2: Mag 5.6 maluku sea, 121 km south of manado, kota manado, sulawesi utara, indonesia (https://www.volcanodiscovery.com/earthquakes/quake-info/21681172/quake-felt-Apr-17-2025-Near-Modisi-North-Sulawesi-Indonesia.html)
Thursday, Apr 17, 2025, at 08:51 am (GMT +8) -
#3: Mag 5.6 south atlantic ocean, saint helena (https://www.volcanodiscovery.com/earthquakes/quake-info/21679472/mag5quake-Apr-16-2025-St-Helena-Southern-Mid-Atlantic-Ridge.html)
Wednesday, Apr 16, 2025, at 11:41 am (GMT -1) -
#4: Mag 5.5 gisborne, new zealand (https://www.volcanodiscovery.com/earthquakes/quake-info/21680173/mag3quake-Apr-16-2025-New-Zealand.html)
Wednesday, Apr 16, 2025, at 05:35 am (GMT -12) -
#5: Mag 5.2 indian ocean, 273 km south of nusa penida island, provinsi bali, indonesia (https://www.volcanodiscovery.com/earthquakes/quake-info/21681651/quake-felt-Apr-17-2025-Near-Denpasar-Bali-Indonesia.html)
Thursday, Apr 17, 2025, at 12:34 pm (GMT +8) -
#6: Mag 5.0 new zealand (https://www.volcanodiscovery.com/earthquakes/quake-info/21680523/mag5quake-Apr-16-2025-New-Zealand.html)
Wednesday, Apr 16, 2025, at 08:08 am (GMT -12) -
#7: Mag 5.0 south pacific ocean, 136 km east of neiafu, vava'u, tonga (https://www.volcanodiscovery.com/earthquakes/quake-info/21678769/mag5quake-Apr-16-2025-135-km-E-of-Neiafu-Tonga.html)
Wednesday, Apr 16, 2025, at 08:30 pm (GMT +13) -
#8: Mag 4.9 south pacific ocean, new zealand (https://www.volcanodiscovery.com/earthquakes/quake-info/21680482/mag2quake-Apr-16-2025-New-Zealand.html)
Thursday, Apr 17, 2025, at 07:57 am (GMT +12) -
#9: Mag 4.9 south pacific ocean, 490 km northeast of nuku'alofa, tongatapu, tonga (https://www.volcanodiscovery.com/earthquakes/quake-info/21681254/mag4quake-Apr-17-2025-Tonga.html)
Thursday, Apr 17, 2025, at 02:14 pm (GMT +13) -
#10: Mag 4.9 philippine sea, 402 km southwest of dededo village, dededo, guam (https://www.volcanodiscovery.com/earthquakes/quake-info/21680285/mag4quake-Apr-16-2025-Guam-Western-Caroline-Islands-Micronesia.html)
Thursday, Apr 17, 2025, at 03:14 am (GMT +9) -
Earthquakes reported felt
#1: Mag 3.3 itajobi, 21 km southwest of catanduva, catanduva, sao paulo, brazil (https://www.volcanodiscovery.com/earthquakes/quake-info/21679113/mag3quake-Apr-16-2025-Brazil.html) - 33 reports
Wednesday, Apr 16...
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World Earthquake Report for Thursday, 17 April 2025
Earthquake news: reports and updates on earthquake activity world-wide