Map of today's active volcanoesStromboli (Eolian Islands, Italy): (30 Jul) The Sezione di Catania - Osservatorio Etneo (INGV) reported that eruptive activity continued at Stromboli during 20-26 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 high-intensity explosions that ejected lapilli and bombs above the vents.Explosions at vents in Area C-S were low-to-moderate in intensity and frequency, which ejected both fine and coarse 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): The latest satellite imagery by the ESA's Sentinel-2 captured the ongoing eruption of the volcano. In the image, there is likely visible the small pyroclastic flow....31 Jul:The effusive activity (lava flow emission), which began yesterday at 20:49 local time in the upper Valle del Leone area from a new vent at an altitude of approximately 2,700 m above sea level, continues after the end of last night's second paroxysm from the Voragine crater.According to the volcano observatory, it had reached an estimated altitude of around 1,700-1,750 m above sea level in the area above Rocca Capra by around 10 am this morning. ... [read more] ... [show less] The flow is currently advancing only slowly.Yesterday, July 30, intense strombolian activity from the Voragine crater—which had gradually decreased until temporarily ceasing around 13:00 local time, restarted around 18:50 and gradually regained strength, reaching a very sustained level around 21:55. The activity continued with sustained fountaining until approximately 01:40 am this morning, then abruptly ceased around 02:00 am. Ash plumes rose to approximately 7,000 m above sea level and spread in a southwesterly direction....30 Jul:The Sezione di Catania - Osservatorio Etneo (INGV) reported eruptive activity at Etna’s summit craters during 20-26 July characterized by sporadic explosive activity and ash emissions at Northeast Crater (NEC) and Bocca Nuova Crater (BN) and gas emissions at Southeast Crater and Voragine Crater (VOR). An explosion at the W pit crater at BN produced a diffuse brown-to-gray ash plume that rapidly dissipated on 21 July. The Alert Level remained at Yellow (the second lowest level on a four-level scale) according to the Dipartimento della Protezione Civile.Sources: Sources: Sezione di Catania - Osservatorio Etneo (INGV), Dipartimento della Protezione Civile ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Etna. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 23 July-29 July 2026. Smithsonian Institution and USGS....30 Jul:The second paroxysm continues and seems to be stronger than its cousin earlier this morning.In a bulletin from late afternoon, the volcano observatory reported that there is now also a new lava flow on the flanks of the summit complex; it started at 20:49 local time from a vent in the upper Valle del Leone area, at an altitude of approximately 2,700 meters above sea level. At the same time, strombolian activity - now lava fountaining - activity from the Voragine crater is also producing a lava flow that finds its way in to the adjacent North-East crater.Sheveluch (Kamchatka): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 34000 ft (10400 m) altitude or flight level 340 and is moving at 80 kts in E direction.The full report is as follows: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY OBS VA DTG:31/1120Z to 34000 ft (10400 m)...30 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 21-29 July. A thermal anomaly was identified in satellite images on all or most days. Explosions on 21 July produced ash plumes that rose to 9 km (29,500 ft) a.s.l. and drifted NE by 2045.The Aviation Color Code was raised to Red (the highest level on a four-color scale) at 2230 but since explosions stopped it was moved back to Orange at 0103 on 22 July. The ash plume drifted as far as 560 km NE. At 2125 on 22 July explosions generated ash plumes that rose 4 km (13,100 ft) a.s.l. and drifted 90 km ESE. ... [read more] ... [show less] Explosions during 23-24 and 26 July produced ash plumes that rose 7-8.5 km (23,000-27,900 ft) a.s.l. and drifted as far as 370 km SW and 806 km NE. The ash cloud generated by explosions on 24 July was about 2,030 km long and as wide as 180 km by 25 July, which extended over the Sea of Okhotsk with the farthest edge of the plume about 1,630 km from Sheveluch.Explosions at 1655 on 28 July generated ash plumes that rose as high as 9.6 km (31,500 ft) a.s.l. and drifted 650 km SW. Dates are based on UTC; specific events are in local time where noted.Tokachi (Hokkaido): (30 Jul) The Japan Meteorological Agency (JMA) reported that at around 1107 on 22 July a small eruption at Tokachidake’s Crater 62-2 generated a black plume that rose 200 m above the crater rim. An infrasound signal associated with the eruption had a maximum amplitude of 0.76 pascals and volcanic tremor was recorded for about 45 seconds. The Alert Level remained at 2 (on a scale of 1-5) and the public was warned that eruptive products may impact areas within 1.5 km of the crater.Sources: Source: Japan Meteorological Agency (JMA) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Tokachidake. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 23 July-29 July 2026. Smithsonian Institution and USGS.Kuchinoerabu-jima (Ryukyu Islands): (30 Jul) The Japan Meteorological Agency (JMA) reported that the number of shallow volcanic earthquakes increased beneath an area near Kuchinoerabujima’s Furudake Crater with 100 earthquakes recorded during 18-27 July. Some of the events were located near Shindake Crater (just N of Furudake). No significant changes to emissions at either Shindake or Furudake craters were observed during a field survey on 23 July.However, the geothermal area around Shindake persisted and some areas on the Furudake Crater floor had expanded. The Alert Level was raised to 2 (on a scale of 1-5) at 2000 on 27 July; 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. ... [read more] ... [show less] Sources: Source: Japan Meteorological Agency (JMA)---Sakurajima (Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20260731/1838Z FL080 EXTD SE OBS VA DTG:31/1840Z...30 Jul:The Japan Meteorological Agency (JMA) reported ongoing eruptive activity at Minamidake Crater (Aira Caldera’s Sakurajima volcano) during 20-27 July. The monitoring networks recorded a total of 21 eruptive events, with no ejected ballistics nor incandescence observed. The tallest plume rose 3 km above the crater rim at 1414 on 21 July and drifted SE.The other ash plumes rose 1-1.9 km above the crater. Ash emissions were continuous for about two hours, during 1834-2045, on 25 July. 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. ... [read more] ... [show less] Sources: Source: Japan Meteorological Agency (JMA)---Mayon (Luzon Island, Philippines): (30 Jul) The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption at Mayon continued during 22-29 July, characterized by lava effusion, periodic pyroclastic density currents (PDCs), incandescent rockfalls, and occasional Strombolian activity. Emissions were visible daily, rising as high as 750 m above the summit and drifting in multiple directions. Each day the seismic network recorded 10-19 rockfalls and 1-7 volcanic earthquakes.There were also 2-3 daily PDCs during 25 and 27-28 July. Sulfur dioxide emissions averaged 1,195-2,903 tonnes per day. The lava flows did not advance in the Bonga (SE) and Basud (E) drainages, remaining 3.2, and 3.8 km long, respectively, but did advance to 2.7 km long in the Mi-isi (S) drainage by 23 July. ... [read more] ... [show less] Strombolian activity was visible on 26 July. The Alert Level remained at 3 (on a 0-5 scale) and residents were reminded to stay away from the 6-km-radius Permanent Danger Zone (PDZ). PHIVOLCS recommended that civil aviation authorities advise pilots to avoid flying close to the summit.Sources: Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)Bulusan (Luzon Island, Philippines): (30 Jul) The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported increased seismicity at Bulusan in a 28 July advisory, noting that a total of 109 volcanic earthquakes were recorded by the seismic network during 0000-1500. The seismicity mostly consisted of volcano-tectonic earthquakes associated with rock fracturing located at shallow depths beneath the edifice. Weak-to-moderate gas emissions rose from the summit crater and active vents; sulfur dioxide emissions were low levels, averaging 50 tonnes per day on 21 July.The Alert Level remained at 1 (the second lowest level on a scale of 0-5). The public was reminded not to enter the 4-km-radius Permanent Danger Zone (PDZ) and to exercise vigilance within the 2-km Extended Danger Zone (EDZ) on the SE sector. Pilots were warned not to fly close to the summit because of the potential of ash plumes from phreatic eruptions. ... [read more] ... [show less] Sources: Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)---Langila (New Britain, Papua New Guinea): (30 Jul) The Darwin Volcanic Ash Advisory Centre (VAAC) reported that ash plumes from Langila rose to 1.8-2.1 km (6,000-7,000 ft) a.s.l. and drifted NE and N during 21 and 24-25 July based on satellite images. A thermal anomaly at the summit was identified in a 26 July image.Sources: Source: Darwin Volcanic Ash Advisory Centre (VAAC) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Langila. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 23 July-29 July 2026. Smithsonian Institution and USGS.Ulawun (New Britain, Papua New Guinea): (30 Jul) The Darwin Volcanic Ash Advisory Centre (VAAC) reported that an ash plume at Ulawun had risen 3.7 km (12,000 ft) a.s.l. and drifted E by 1420 on 23 July based on satellite images and information from the Rabaul Volcano Observatory (RVO). The plume had dissipated by 2000.Sources: Source: Darwin Volcanic Ash Advisory Centre (VAAC) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Ulawun. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 23 July-29 July 2026. Smithsonian Institution and USGS.Ibu (Halmahera, Indonesia): (31 Jul) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA LAST REPORTED AT 31/0156Z MOV NE EST VA DTG:31/0500Z...30 Jul:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity at Ibu continued during 23-29 July, with daily eruptive events recorded by the seismic network. Daily gray or white-to-gray ash plumes rose 200-700 m above the summit and drifted NE, N, and NW. 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 9000 ft (2700 m) altitude or flight level 090 .The full report is as follows: VA TO FL090 OBS AT 31/0400Z MOV NW EST VA DTG:31/1600Z to 9000 ft (2700 m)...30 Jul:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity continued at Lewotobi Laki-Laki during 23-29 July. Multiple daily gray ash plumes rose 200-1,600 m above the summit and drifted in various directions. Minor incandescence at the summit was visible in a webcam image at 1855 on 26 July and at 0302 on 27 July.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. ... [read more] ... [show less] Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)---Lewotolo (Lesser Sunda Islands): (30 Jul) The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported ongoing eruptive activity at Lewotolok during 23-29 July. Daily white plumes rose as high as 100 m above the summit. A dense gray ash plume from an eruptive event at 0721 on 23 July rose around 200 m above the summit and drifted E.An eruptive event at 1307 on 29 July produced a dense gray ash plume that rose around 600 m above the summit and drifted SE. Incandescent material was ejected above the summit and onto the flanks during 23-24 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): (30 Jul) The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported ongoing eruptive activity at Krakatau during 23-29 July. A white, gray, and black ash plume rose as high as 300 m above the summit on 25 July and a white-and-gray ash plume rose 100 m above the summit on 26 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.Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Krakatau. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 23 July-29 July 2026. Smithsonian Institution and USGS.Merapi (Central Java, Indonesia): (30 Jul) The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that the eruption at Merapi (on Java) continued during 23-29 July with daily lava avalanches produced by the active lava dome on the upper SW flank. There were 4-10 daily lava avalanches that traveled as far as 2 km down the Sat/Putih or Krasak drainages on the W flank during 24-26 and 28-29 July. One pyroclastic flow traveled 2 km down the Boyong drainage (S flank) on 28 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 and is moving at 05 kts in E direction.The full report is as follows: VA TO FL150 LAST REPORTED AT 31/1248Z MOV NE to 15000 ft (4600 m)...30 Jul:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity continued at Semeru during 23-29 July, with daily eruptive events recorded by the seismic network. White-to-gray ash plumes rose 500-800 m above the summit and drifted multiple directions on most days; emissions were not visible on 23 and 29 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, 23 July-29 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 6000 ft (1800 m) altitude or flight level 060 and is moving at 10 kts in N direction.The full report is as follows: VA TO FL060 OBS AT 31/1020Z EXTD NE OBS VA DTG:31/1020Z to 6000 ft (1800 m)Aoba (Vanuatu): (30 Jul) The Wellington Volcanic Ash Advisory Center (VAAC) reported that ash plumes at Ambae were identified in satellite images on 25, 27, and 29 July rising 2.4-4.6 km (8,000-15,000 ft) a.s.l. and drifting N, E, SE, and S. 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: Wellington Volcanic Ash Advisory Center (VAAC), Vanuatu Meteorology and Geohazards Department (VMGD) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Ambae. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 23 July-29 July 2026. Smithsonian Institution and USGS.Kilauea (Hawai'i): (30 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 22-29 July. Flaming at the S vent was visible during 22-23 July, and variable intensities of incandescence persisted at both the S and N vents during 22-27 July.Occasional spattering at both vents occurred overnight during 27-28 July. Lava overflowed the N vent at 1022 on 28 July and was followed by five more overflows by 1353, 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 1048. ... [read more] ... [show less] The last overflow was followed by dome fountains at the N vent rising 3-10 m and a vigorous overflow at 1356. The dome fountain grew taller and became more voluminous, transitioning to a 30-m-high lava fountain at 1910; maximum height was 150 m at 2100. The lava fountain produced significant heat and ash, feeding an eruption plume that rose as high as 5.6 km (19,000 ft) a.s.l. and drifted S based on radar data.Fine ash was observed within public areas of Hawai’i Volcanoes National Park. The plume was shorter by 2136, rising as high as 4.9 km (16,000 ft) a.s.l. Later in the evening lower winds subsided and the plume became more vertical but did not spread over populated areas.Great Sitkin (United States, Aleutian Islands): (30 Jul) The Alaska Volcano Observatory (AVO) reported that slow lava effusion continued to feed a thick flow in Great Sitkin’s summit crater during 22-29 July. Minor earthquakes were detected daily. Weather clouds obscured views during most of the week.Elevated surface temperatures were identified in satellite images during 25-29 July. No activity was visible in clear satellite and webcam views during 26-27 July. 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)---Santiaguito (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 and is moving at 25 kts in W direction.The full report is as follows: OCNL VA EM to 14000 ft (4300 m)...30 Jul:The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported ongoing eruptive activity at Santa Maria’s Santiaguito dome complex during 22-29 July, with continuing lava extrusion at Caliente dome. Incandescence at the summit was observed during dark hours. Effusion of blocky lava and collapses of material produced daily incandescent block avalanches that descended the flanks, mainly to the W, SW, and S; on a few of the days these collapses reportedly occurred at a rate of 1-4 per hour.Daily explosions, 0-3 per hour when reported, generated gas-and-ash plumes that rose 800-900 m above the dome and drifted SW and W. Minor ashfall was reported in Monte Claro (S) and surrounding areas during 24-25 July and in Monte Claro, Finca Monte Bello (6 km WSW), and surrounding areas during 27-28 July. ... [read more] ... [show less] Sources: Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)---Fuego (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: FQT SMALL VA EM...30 Jul:The Instituto Nacional de Sismología, Vulcanologia, Meteorologia e Hidrología (INSIVUMEH) reported that eruptive activity at Fuego continued during 22-29 July. Daily Strombolian explosions recorded by the seismic network, at rates of 5-11 per hour when reported, generated gas-and-ash plumes that rose as high as 1.1 km above the summit and drifted as far as 40 km SW, W, and NW. Rumbling sounds, shock waves, and/or sounds associated with explosions were reported daily.Explosions occasionally ejected incandescent material as high as 300 m above the summit and onto the flanks, causing incandescent block avalanches to descend the flanks; notably avalanches descended the Seca (W), Taniluyá (SSW), Ceniza (SSW), Trinidad (SSW), Las Lajas (SE), and Honda drainages, sometimes reaching vegetated areas. ... [read more] ... [show less] Sources: Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)---Telica (Nicaragua): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ONGOING VA EMS...30 Jul:According to news sources an explosion at Telica at 1230 on 24 July produced an ash plume that rose 150 m above the summit and drifted SW. The Washington Volcanic Ash Advisory Center (VAAC) reported that ash plumes visible in satellite and webcam images rose as high as 2 km (6,500 ft) a.s.l. and drifted less than 30 km W and SW during 27-28 July.Sources: Sources: TN8 Nicaragua, Washington Volcanic Ash Advisory Center (VAAC) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Telica. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 23 July-29 July 2026. Smithsonian Institution and USGS.Rincón de la Vieja (Costa Rica): (30 Jul) The Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA) reported increased activity at Rincón de la Vieja. Starting on 1 June the seismic network detected a slight increase in background tremor, followed by volcano-tectonic earthquakes in areas both proximal and distal to the crater. A small swarm of long-period earthquakes on 28 June was coincident with a general decrease in tremor amplitude.Sulfur dioxide emissions began to gradually increase in mid-June, with averages above baseline levels; emissions averaged 460 tonnes per day (t/d) during 11-17 July and 306 t/d during 18-24 July. The geodetic network detected extension between the summit and N flank, and to a lesser extent at the base of the volcano, though there was no significant uplift. A phreatic eruption on 2 July was the first to be recorded in about six weeks. ... [read more] ... [show less] Notably, there were 38 phreatic eruptions during 2-24 July, three of which generated lahars on the N flank; the largest lahar in 2026 was recorded at 0302 on 20 July. At 0438 on 24 July a phreatic eruption that lasted around two minutes ejected ballistics 200 m above the lake’s surface and generated a gas-and-stream plume that rose 400 m and drifted W. At 0600 the Alert Level was raised to 3, Caution, (the second highest level on a four-level scale) and the Aviation Color Code was raised to Orange (the second highest level on a four-color scale).Sources: Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)Puracé (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: OCNL VA EMS...30 Jul:The Servicio Geologico Colombiano (SGC) reported intensifying eruptive activity at Puracé during 21-27 July. Seismic activity associated with rock fracturing processes continued at similar levels compared to the previous week, with a slight increase in intensity. The signals, with magnitudes below 1.4, were mainly located between Piocollo and Puracé volcanoes at depths of 1-3 km.Satellite images showed a persistent thermal anomaly within Puracé. An increase in the temperature of emissions at the fumarolic field located on the outer rim of Puracé was observed in thermal camera images. A significant increase in both sulfur dioxide and carbon dioxide emissions measured by instrumental and satellite monitoring systems reached the highest levels detected since the current eruptive episode began on 20 January 2025. ... [read more] ... [show less] Signals associated with fluid movement and emissions increased in intensity; both continuous tremor and tremor pulses intensified. The signals were located mainly beneath Puracé at depths less than 3 km. There was an increase in the number of daily gas-and-ash emissions and the heights of the plumes, with the tallest plume rising 3.5 km above the crater rim.Ashfall, volcanic activity noises, and ground vibrations were reported in various areas around Puracé and Coconuco, and ash also fell in Paletará (16 km SW) and Popayán (28 km NW). The Alert Level remained at Yellow (the second lowest level on a four-color scale).Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL VA EMSSabancaya (Peru): (30 Jul) The Instituto Geofísico del Perú’s (IGP) Centro Vulcanológico Nacional (CENVUL) reported continuing eruptive activity at Sabancaya during 20-26 July. The seismic network detected 53 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 1.5 km above the crater rim and drifted less than 10 km SE.Thermal anomalies on the crater floor were identified in satellite images and moderate sulfur dioxide emissions averaged 888 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 31 Jul 2026: