Map of today's active volcanoesStromboli (Eolian Islands, Italy): (16 Jul) The Sezione di Catania - Osservatorio Etneo (INGV) reported that eruptive activity continued at Stromboli during 6-12 July. Webcam images showed Strombolian activity from vents in Area N within the upper part of the Sciara del Fuoco, and vents in Area C-S (South-Central Crater) on the crater terrace. The vents in Area N produced low- to medium-intensity explosions, ejecting lapilli and bombs above the vents.Some spattering was visible. Explosions at vents in Area C-S were low-to-moderate in intensity and frequency and ejected fine tephra above the vents. The Alert Level remained at Yellow (the second lowest level on a four-level scale) according to the Dipartimento della Protezione Civile. ... [read more] ... [show less] Sources: Source: Sezione di Catania - Osservatorio Etneo (INGV)---Etna (Sicily, Italy): (16 Jul) The Sezione di Catania - Osservatorio Etneo (INGV) reported eruptive activity at Etna’s summit craters during 6-12 July characterized by activity along the fissure between Voragine Crater (VOR) and Northeast Crater (NEC) and explosive activity at both NEC and Bocca Nuova Crater (BN). Strombolian activity and ash emissions at vents along the fissure began to decrease during the afternoon of 6 July and ceased during the early afternoon of 7 July. During the rest of the week gas emissions rose from the fissure and the pit crater on the upper E flank of VOR.Explosive activity and gas emissions continued at NEC. INGV staff conducted a field survey on 11 July and observed modest intra-crater explosive activity at BN with ejected tephra falling back into the crater. Minor and episodic ash emissions rose from the crater and rapidly dissipated. ... [read more] ... [show less] The Alert Level remained at Yellow (the second lowest level on a four-level scale) according to the Dipartimento della Protezione Civile.Sources: Source: Sezione di Catania - Osservatorio Etneo (INGV)Krasheninnikov (Kamchatka, Russia): (16 Jul) The Kamchatkan Volcanic Eruption Response Team (KVERT) reported that lava flows at Krasheninnikov continued to effuse onto the ENE and E flanks of the Northern Cone during 8-15 July. A daily bright thermal anomaly was identified in satellite images. Plumes of re-suspended ash drifted 60 km SSE during 11-12 July.The Aviation Color Code remained at Yellow (the second lowest level on a four-color scale). Dates and times are provided in Coordinated Universal Time (UTC); events are in local time only where specified. ... [read more] ... [show less] Sources: Source: Kamchatkan Volcanic Eruption Response Team (KVERT)---Sheveluch (Kamchatka): (16 Jul) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NOT PROVIDED...16 Jul:The Kamchatkan Volcanic Eruption Response Team (KVERT) reported continuing lava effusion and explosive activity at the lava domes along the N crater floor of Young Sheveluch (on the SW flank of Old Sheveluch) during 9-15 July. A thermal anomaly was identified in satellite images on most days; weather clouds obscured views on a few days. Explosions at 2143 on 9 July generated ash plumes that rose 10 km (32,800 ft) a.s.l. and drifted 30 km E, prompting KVERT to raise the Aviation Color Code (ACC) to Red (the highest level on a four-color scale) at 2239.No additional explosions were detected over the next several hours, prompting KVERT to lower the ACC to Orange at 0521 on 10 July. The ash cloud from the day before was 440 x 62 km and located 885 km SW. An explosive event that began at 0525 on 14 July produced ash plumes that rose 10.5 km (34,500 ft) a.s.l. and drifted 145 km ESE; the ACC was raised to Red at 0743. ... [read more] ... [show less] No additional explosions were recorded throughout the day; the ACC was lowered to Orange at 2251. The ash plume had drifted 1,100 km SE. Dates are based on UTC; specific events are in local time where noted.Sources: Source: Kamchatkan Volcanic Eruption Response Team (KVERT)Kuchinoerabu-jima (Ryukyu Islands): (16 Jul) The Japan Meteorological Agency (JMA) reported that the number of shallow volcanic earthquakes beneath an area near Kuchinoerabujima’s Furudake Crater had been fluctuating since May. The number of shallow volcanic earthquakes began increasing at around 0100 on 9 July and by 0215 the seismic network had recorded a total of 11 events. There were no changes to emissions with white plumes rising as high as 200 m above the Shindake crater rim and no emissions visible at Furudake.Sulfur dioxide emissions remained low, averaging less than 100 tons per day on 8 July. The Alert Level was raised to 2 (on a scale of 1-5) at 0225; the public was warned that ejected blocks may land within 1 km of both craters, and pyroclastic flows may affect areas within 2 km of the W flank of Shindake Crater. Seismicity declined with no volcanic earthquakes recorded from 0400 on 9 July to 1600 on 10 July. ... [read more] ... [show less] Sources: Source: Japan Meteorological Agency (JMA)---Sakurajima (Kyushu, Japan): (16 Jul) The Japan Meteorological Agency (JMA) reported ongoing eruptive activity at Minamidake Crater (Aira Caldera’s Sakurajima volcano) during 6-13 July. A very small eruptive event was detected on 7 July. Volcanologists conducted a field survey that same day and measured extremely high sulfur dioxide emissions, averaging 3.000 tons per day.Crater incandescence was visible in webcam images that night. Eruptive events at 1657 and 1847 on 12 July produced ash plumes that rose 1.7 and 1 km above the crater rim, respectively. On 13 July continuous ash emissions during 0244-0320 rose as high as 1 km above the crater rim and drifted NE. ... [read more] ... [show less] An eruptive event later that day at 1052 generated an ash plume that rose 1.7 km above the crater rim and drifted N. The Alert Level remained at 3 (on a 5-level scale), and the public was warned to be cautious within 2 km of both the Minimadake and Showa craters.Sources: Source: Japan Meteorological Agency (JMA)Kanlaon (Central Philippines): (16 Jul) The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that a moderately explosive eruption at Kanlaon began at 0733 on 9 July and lasted for three minutes based on seismic and acoustic data. Webcams views of the eruption were obscured by weather clouds, but a dense grayish ash plume was estimated to have risen 2-3 km above the summit based on photos taken from greater distances. Pyroclastic density currents (PDCs) descended the upper SE flanks at least 1 km, but were also not clearly visible.Reports on social media indicated that angular rock fragments up to 30 cm in diameter were ejected within 5 km, impacting parts of Canlaon City (10 km ESE), Negros Oriental. The ejected ballistics represented the farthest reach of ballistic fragments since the 3 June 2024 eruption. A shockwave produced a booming or rumbling sound, heard up to 35 km away, that registered as a maximum of 255 pascals by an infrasound station about 5 km E. ... [read more] ... [show less] The eruption was preceded by relatively moderate levels of seismic activity, intermittent ash emission at the summit crater, and sustained rates of volcanic gas emissions. Sulfur dioxide emissions rates on 8 July averaged 2,454 tonnes per day (t/d), near the long-term average of 2,577 t/d recorded since 3 June 2024, but higher than the average of 1,544 t/d recorded since 1 January 2026.Tephra fell within a long, narrow swath to the E in at least 31 barangays in 12 municipalities and seven cities of three provinces. In Canlaon City, Vallehermoso (20 km ESE), and San Carlos City (32 km ENE) (all in Negros Oriental) the barangays of Mabigo (10 km SE), Malaiba (7 km ENE), Bapor Mayon, Macapso (21 km E), and Buluangan (21 km E) reported “heavy” ashfall, Pula and Masulog (8 km SE) reported “heavy” ashfall and ballistic blocks, and Masulog also reported lapilli fall. Ballistic rocks reportedly punctured holes through galvanized metal roofs in Masulog, Canlaon City.Taal (Luzon, Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20260717/1051Z FL040 EXTD E REPORTED OBS VA DTG:17/1100Z...16 Jul:The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported eruptive activity at Taal during 8-15 July. The seismic network recorded 0-4 daily volcanic earthquakes, and periods of volcanic tremor that lasted for one minute on 12 July and nine minutes on 15 July. Daily gas-and-steam emissions generally rose as high as 600 m above the crater rim and drifted E and SW, though on 12 July emissions rose up to 1.2 km and drifted NE and NNE.A minor phreatomagmatic eruption occurred on 12 July and lasted for three minutes. Sulfur dioxide emissions averaged 59 and 289 tonnes per day on 14 and 15 July, respectively. The Alert Level remained at 1 (on a scale of 0-5); PHIVOLCS reminded the public that the entire Taal Volcano Island (TVI) was a Permanent Danger Zone (PDZ) and recommended that the Main Crater and areas along the Daang Kastila fissure should remain prohibited. ... [read more] ... [show less] Pilots were warned to avoid flying over TVI.Sources: Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)Mayon (Luzon Island, Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20260717/0526Z FL140 EXTD SSW REPORTED OBS VA DTG:17/1050Z...16 Jul:The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption at Mayon continued during 9-15 July, characterized by lava effusion, periodic pyroclastic density currents (PDCs), incandescent rockfalls, occasional ash-and-gas plumes, and occasional minor Strombolian activity. Sulfur dioxide emissions averaged 1,589 tonnes per day (t/d) on 8 July. The seismic network recorded 144, 75, and 241 rockfalls on 8, 9, and 10 July, respectively.Plumes drifted SE and ESE on 8 July; views were obscured during 9-10 July. ... [read more] ... [show less] On 10 July, the 186th consecutive day of the eruption, a special notice stated that there was a recent decline in the number of both daily rockfalls and PDCs, indicating a decreased lava effusion rate. Notably, sulfur dioxide emissions (measured using campaign spectrometry methods) increased, averaging 4,569 t/d on 9 July and 7,475 t/d on 10 July, which was the highest emission recorded in the last 16 years. Sulfur dioxide emissions continued to rise and peaked at 13,128 t/d on 11 July, the highest recorded in the last 26 years, and only slightly lower that the gas emissions detected during an explosive eruption in 2000.There was a corresponding rise in the number of low-frequency earthquakes attributed to the increased gas emissions, minor Strombolian activity, and increased rockfalls; the seismic network recorded a total of 125 volcanic earthquakes and 344 rockfalls. On 12 July sulfur dioxide emissions declined to 5,842 t/d, and there were 299 rockfalls and 92 volcanic earthquakes. Minor Strombolian activity was recorded by a webcam during 1658-1700.Bagana (Bougainville Island, Papua New Guinea): (16 Jul) The Darwin Volcanic Ash Advisory Centre (VAAC) reported that ash plumes from Bagana were visible in satellite images rising to 2.7 km (9,000 ft) a.s.l. and drifting S and SSE on 14 July. A strong thermal anomaly was also identified.Sources: Source: Darwin Volcanic Ash Advisory Centre (VAAC) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Bagana. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 9 July-15 July 2026. Smithsonian Institution and USGS.Karangetang (Siau Island, Sangihe Islands, Indonesia): (16 Jul) The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) and a news source reported that an eruption occurred at Karangetang’s Kawah Dua (North Crater) at 1914 on 12 July. Weak Strombolian activity ejected incandescent material around 100 m above the summit, followed by a booming sound that ejected incandescent material about 300 m to the SSW. Lava flows and/or incandescent material descended 700-1,000 m to the S and NNW, and 400 m to the WSW.The hot ejected material caused vegetation fires on the upper flanks that was extinguished by the morning of 13 July according to a news source. PVMBG noted that incandescence at the summits of both Kawah Dua and Kawah Utama (South Crater, also referred to as the “Main Crater”) was visible overnight during 12-13 July. The Alert Level remained at 2 (on a scale of 1-4) and the public was advised to stay 1.5 km away from both craters, with an extension to 2.5 km on the W and SW flanks of Main Crater. ... [read more] ... [show less] Sources: Sources: Antara News, Antara News, Antara News, Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)---Ibu (Halmahera, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 .The full report is as follows: VA TO FL060 OBS AT 17/1610Z MOV NE OBS VA DTG:17/1610Z to 6000 ft (1800 m)...16 Jul:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity at Ibu continued during 9-15 July, with daily eruptive events recorded by the seismic network. Daily gray or white-to-gray ash plumes rose 200-900 m above the summit and drifted SW, N, and NE. Incandescence at the summit was visible in some nighttime webcam images.The Alert Level remained at 2 (the second lowest level on a four-level scale) and the public was advised to stay 2 km away from the active crater and 3.5 km away from the N crater wall opening. ... [read more] ... [show less] Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)---Lewotobi (Flores): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 .The full report is as follows: VA TO FL080 REP AT 17/1636Z EST VA DTG:17/1800Z to 8000 ft (2400 m)...16 Jul:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity continued at Lewotobi Laki-Laki during 9-15 July. Multiple daily gray ash plumes rose 200-1,200 m above the summit and drifted W, NW, N, and NE. The Alert Level remained at 3 (on a scale of 1-4), and the public was warned to stay 5 km away from the center of Laki-Laki.Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Lewotobi. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 9 July-15 July 2026. Smithsonian Institution and USGS.Lewotolo (Lesser Sunda Islands): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 .The full report is as follows: VA TO FL070 REP AT 17/0807Z MOV W EST VA DTG:17/0830Z to 7000 ft (2100 m)...16 Jul:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported ongoing eruptive activity at Lewotolok during 9-15 July. Daily white plumes rose as high as 300 m above the summit. White-and-gray ash plumes rose 300 m above the summit on 10 July.Nighttime webcam images often showed incandescent material being ejected above the summit and onto the flanks; incandescent material was ejected 400 m SE on 10 and 12 July. The Alert Level remained at 2 (on a scale of 1-4) and the public was warned to stay 2 km away from the summit. ... [read more] ... [show less] Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)---Krakatau (Sunda Strait, Indonesia): (16 Jul) The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that an eruption at Krakatau continued during 9-15 July. White, gray, and black ash plumes rose as high as 400 m above the summit and drifted NW, N, and NE during 9-10 July. Incandescence was visible at night on 11 July.White-and-gray ash plumes rose 100-200 m above the summit during 11-12 and 15 July. Only white plumes rising 50-100 m were visible during 13-14 July. The Alert Level remained at 3 (on a scale of 1-4), and the public was warned to stay 3 km away from the active crater. ... [read more] ... [show less] Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)---Merapi (Central Java, Indonesia): (16 Jul) The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that the eruption at Merapi (on Java) continued during 9-15 July with daily lava avalanches produced by the active lava dome on the upper SW flank. There were 6-23 daily lava avalanches that traveled as far as 2 km down the Sat/Putih or Krasak drainages on the W flank during 9-12 and 14-15 July. As many as 25 lava avalanches descended the Boyong drainage (S flank) as far as 2 km on 13 July.One pyroclastic flow each day traveled 2 km down the Sat/Putih drainage on 10 July and 2 km down the Boyong drainage on 13 July. The Alert Level remained at 3 (on a scale of 1-4), and the public was warned to stay 3-7 km away from the summit, based on location. ... [read more] ... [show less] Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)---Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .The full report is as follows: VA TO FL150 OBS AT 17/1100Z MOV NE OBS VA DTG:17/1100Z to 15000 ft (4600 m)...16 Jul:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity continued at Semeru during 9-15 July, with daily eruptive events recorded by the seismic network. White-to-gray ash plumes rose 500-1,300 m above the summit and drifted in multiple directions on most days; there were no visual observations of plumes on 11 July. The Alert Level remained at 3 (the second lowest level on a scale of 1-4) and the public was warned to stay at least 5 km away from the Jonggring Saloko Crater in all directions, 13 km from the summit on the SE flank along the Kobokan drainage, and 500 m from the banks of the Kobokan drainage as far as 17 km SE of the summit.Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Semeru. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 9 July-15 July 2026. Smithsonian Institution and USGS.Dukono (Halmahera): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 .The full report is as follows: VA TO FL070 OBS AT 17/1830Z MOV NE OBS VA DTG:17/1830Z to 7000 ft (2100 m)...16 Jul:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Dukono continued during 9-15 July. Daily white-to-gray ash plumes rose 100-600 m above the summit and drifted in multiple directions. At 0702 on 15 July a white-and-gray ash plume rose 2.3 km above the summit and drifted N and NW.The Alert Level remained at Level 2 (on a scale of 1-4) and the public was warned to stay 4 km away from the Malupang Warirang Crater. ... [read more] ... [show less] Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)---Aoba (Vanuatu): (16 Jul) The Wellington Volcanic Ash Advisory Center (VAAC) reported that ash-and-gas plumes at Ambae were visible in satellite and webcam views rising 1.5-3 km (5,000-10,000 ft) a.s.l. and drifting multiple directions during 8-10 and 15 July. The Alert Level remained at 3 (on a scale of 0-5), and the public was warned to stay outside of Danger Zone B, defined as a 3-km radius around the active vents in Lake Voui, and to stay away from drainages during heavy rains.Sources: Sources: Vanuatu Meteorology and Geohazards Department (VMGD), Wellington Volcanic Ash Advisory Center (VAAC) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Ambae. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 9 July-15 July 2026. Smithsonian Institution and USGS.Kilauea (Hawai'i): (16 Jul) The Hawaiian Volcano Observatory (HVO) reported that the eruption within Kilauea’s Kaluapele summit caldera, characterized by episodic fountaining, incandescence, and intermittent spatter from craters along the SW margin of Halema’uma’u Crater, continued at variable levels during 8-15 July. Variable intensities of incandescence persisted at both the S and N vents. Spattering started at the N vent at around 0000 on 11 July and was nearly continuous until 0700.Accumulating spatter built up a small cone around the vent. Spattering periodically occurred at the S vent during the same morning. A small amount of lava overflowed the vent at 0703. ... [read more] ... [show less] Occasional flaming occurred at both vents during 12-14 July and weak spattering at the N vent was visible overnight during 13-14 July.Lava overflowed the N vent four times during 1500-1600 on 14 July, with the longest overflow lasting 30 minutes. HVO raised the Volcano Alert Level to Watch (the second highest level on a four-level scale) and the Aviation Color Code to Orange (the second highest color on a four-color scale) at 1529. Lava overflowed the S vent at 0208 and 0232 on 15 July, each lasting five minutes.Great Sitkin (United States, Aleutian Islands): (16 Jul) The Alaska Volcano Observatory (AVO) reported that slow lava effusion continued to feed a thick flow in Great Sitkin’s summit crater during 8-15 July. Seismicity was minor and likely associated with rockfalls on the growing dome. Steaming was visible in satellite images during 8-9 July, and elevated surface temperatures were identified almost every day.The Volcano Alert Level remained at Watch (the third level on a four-level scale) and the Aviation Color Code remained at Orange (the third color on a four-color scale). ... [read more] ... [show less] Sources: Source: US Geological Survey Alaska Volcano Observatory (AVO)---Popocatépetl (Central Mexico): (16 Jul) The Centro Nacional de Prevención de Desastres (CENAPRED) reported that eruptive activity was low at Popocatépetl during 8-15 July. The seismic network recorded 17-196 long-period events per day, accompanied by steam-and-gas emissions and occasional ash that drifted NW, W, and WSW. On 13 July there was a moderate explosion and a period of continuous emissions lasting six hours and 46 minutes.Minor ashfall was reported in the municipalities of San Pedro Nezapa (13 km NW), Shallianquixco (18 km NW), and San Diego Huehuecalco (16 km NW), and at the Amecameca Municipal Headquarters (20 km NW). Early on 14 July there was a period of continuous emissions lasting nearly four hours, including an explosion at 0444 that ejected incandescent material onto the upper flanks. According to the Washington Volcanic Ash Advisory Center (VAAC) ash plumes visible in webcam and/or satellite images during 12-14 July rose 6.1-7.3 km (20,000-24,000 ft) a.s.l. (as high as 1.9 km above the summit) and drifted WNW, W, and WSW. ... [read more] ... [show less] 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: Sources: Centro Nacional de Prevencion de Desastres (CENAPRED), Washington Volcanic Ash Advisory Center (VAAC)Santiaguito (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 13000 ft (4000 m) altitude or flight level 130 .The full report is as follows: FREQUENT VA EMS to 13000 ft (4000 m)Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .The full report is as follows: FQT SMALL VA EM to 14000 ft (4300 m)Rincón de la Vieja (Costa Rica): (16 Jul) The Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA) reported minor eruptive events at Rincón de la Vieja during 9-15 July. Seismic and infrasound sensors recorded three eruptive events on 11 July that produced low-level steam-and-gas plumes of unknown heights. A resident that lives to the N reported heavy rain in the region that same day and that starting around 1900 water in the Azul and Pénjamo rivers turned milky gray.A moderate eruption at 0337 on 12 July produced a steam-and-gas plume of an unknown height. Seismic and acoustic sensors recorded eruptive activity during 1424-1428 on 14 July. On 15 July residents observed sediment deposits at the Azul River likely caused by ashfall from day before. ... [read more] ... [show less] The Alert Level remained at Level 2, Yellow, the second lowest level on a four-level scale.Sources: Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)Puracé (Colombia): (16 Jul) The Servicio Geologico Colombiano (SGC) reported ongoing low-level eruptive activity at Puracé during 7-13 July. Seismic activity associated with rock fracturing processes continued at similar levels compared to the previous week with signals mainly located between Piocollo and Puracé volcanoes at depths of 1-3 km and magnitudes below 1. A thermal anomaly continued to be detected in satellite images within the crater of Puracé and Curiquinga and in the fumarolic field along the outer rim of Puracé.Sulfur dioxide emissions persisted and slow deformation continued between Puracé, Piocollo, and Curiquinga volcanoes. Signals associated with fluid movement and emissions were ongoing from beneath Puracé at depths less than 3 km. Gas-and-ash emissions were less frequent than the previous week. ... [read more] ... [show less] The plumes rose as high as 500 m above the summit and drifted NW and W. The Alert Level remained at Yellow (the second lowest level on a four-color scale).Sources: Source: Servicio Geológico Colombiano (SGC)Sangay (Ecuador): (16 Jul) The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Sangay during 8-15 July. Surficial activity was characterized as decreasing. The seismic network recorded 10-35 daily explosions.Weather conditions obscured webcam and satellite views. The Secretaría de Gestión de Riesgos (SGR) maintained the Alert Level at Yellow (the second highest level on a four-color scale). ... [read more] ... [show less] Sources: Sources: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN), Secretaría de Gestión de Riesgos (SGR)---Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: OCNL VA EMS...16 Jul:The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that eruptive activity at Reventador continued at a high level during 8-15 July. Seismicity included 64-88 daily explosions, long-period earthquakes, harmonic tremor, and tremor associated with emissions. Weather clouds often obscured webcam and satellite views, though on a few days ash-and-gas plumes were visible generally rising 700-1,300 m above the crater rim and drifting NNE, NW, and WNW.During 14-15 July several gas-and-ash plumes visible in both webcam and satellite images rose 700-1,500 m above the crater rim and drifted W, WNW, and NW. Incandescent blocks were also visible during morning hours rolling as far as 1 km down the flanks. Secretaría de Gestión de Riesgos (SGR) maintained the Alert Level at Orange (the second highest level on a four-color scale). ... [read more] ... [show less] Sources: Sources: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN), Secretaría de Gestión de Riesgos (SGR)---Sabancaya (Peru): (17 Jul) Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: NO VA EMISSIONS...16 Jul:The Instituto Geofísico del Perú’s (IGP) Centro Vulcanológico Nacional (CENVUL) reported continuing eruptive activity at Sabancaya during 6-12 July. The seismic network detected 45 seismic events related to the movement of magmatic fluids, along with additional earthquakes indicating rock fracturing. Gas, steam, and ash plumes periodically rose as high as 800 m above the crater rim and drifted less than 10 km NE, N, and NW.Thermal anomalies on the crater floor were identified in satellite images and moderate sulfur dioxide emissions averaged 649 tons per day. The Alert Level remained at Orange (the third level on a four-color scale) and the public was warned to stay outside of a 12 km radius from the summit. ... [read more] ... [show less] Sources: Source: Instituto Geofísico del Perú (IGP)---Volcano Activity Summary for 17 Jul 2026: