Map of today's active volcanoesEtna (Sicily, Italy): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Toulouse warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 10 kts in S direction.The full report is as follows: ERUPTION AT 20260806/2020Z ERUPTION HAS STOPPED OBS VA DTG:07/1800Z to 15000 ft (4600 m)...6 Aug:The Sezione di Catania - Osservatorio Etneo (INGV) reported eruptive activity at Etna’s summit craters during 27 July-2 August characterized by sporadic explosive activity and ash emissions at Northeast Crater (NEC) and Bocca Nuova Crater (BN), Strombolian activity and lava effusion at Voragine Crater (VOR), and gas emissions at Southeast Crater. Strombolian activity began at VOR at 0330 on 30 July. The explosive activity gradually intensified during the morning, which produced ash plumes that drifted NW, and transitioned to lava fountaining.The Aviation Color Code (ACC) was raised to Yellow (the second lowest color on a four-color scale) at 0407 and to Orange at 0424. Ash plumes rose to 7 km (23,000 ft) a.s.l.; the ACC was raised to Red at 0533. Lava flows from Strombolian activity at VOR advanced into the Northeast Crater (NEC), and ash emissions drifted SW. ... [read more] ... [show less] At around 0959 a small pyroclastic flow traveled from VOR towards the upper part of the Valle del Bove, and at around the same time ash emissions became less intense. Minor ashfall was reported in Bronte (15 km WNW). Strombolian activity at VOR began to decrease at 1030 and ceased at 1300, though intense ash emissions persisted.By 1743 ash emissions had declined and were characterized as diffuse; the ACC was lowered to Orange.Sheveluch (Kamchatka): 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 30 July-5 August. A daily thermal anomaly was identified in satellite images. Explosions at 0502 on 31 July produced ash plumes that rose as high as 10 km (32,800 ft) a.s.l. and drifted E.The Aviation Color Code was raised to Red (the highest level on a four-color scale) at 0543 but since explosions stopped it was moved back to Orange at 0842. The ash plume drifted 2,850 km SE and E during 31 July-1 August. At 1335 on 4 August explosions generated ash plumes that rose 5-6 km (16,400-19,700 ft) a.s.l. and drifted 482 km NE. ... [read more] ... [show less] Dates are based on UTC; specific events are in local time where noted.Sources: Source: Kamchatkan Volcanic Eruption Response Team (KVERT)Sakurajima (Kyushu, Japan): The Japan Meteorological Agency (JMA) reported ongoing eruptive activity at Minamidake Crater (Aira Caldera’s Sakurajima volcano) during 27 July-3 August. The monitoring networks recorded a total of 36 eruptive events and three explosions. Multiple eruptive events per day during 27-29 July and 31 July-2 August generated ash plumes that rose 1-3 km above the summit and sometimes drifted E, SE, and S.Emissions were sometimes continuous, notably during 0351-0430 on 28 July and from 2334 on 2 August to 0030 on 3 August. Large blocks were occasionally ejected as far as 1.1 km from the vent. An explosion at 2059 on 29 July generated an ash plume that rose 1.6 km above the summit and drifted S. ... [read more] ... [show less] At 0002 on 2 August an explosion produced an ash plume that rose 2.2 km above the summit and ejected large blocks 500-700 m from the vent. An ash plume from an explosion at 2334 on 2 August rose 3 km above the summit and drifted S. Crater incandescence was visible in nighttime webcam images during 31 July-3 August.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.Suwanosejima (Ryukyu Islands): The Japan Meteorological Agency (JMA) reported that eruptive activity at Suwanosejima's Ontake Crater continued during 24-31 July. Eruptive events during 24-25 July generated ash plume that rose as high as 700 m above the crater rim. The Alert Level remained at 2 (the second level on a five-level scale) and the public was warned to be cautious within 1.5 km of the crater.Sources: Source: Japan Meteorological Agency (JMA) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Suwanosejima. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 30 July-5 August 2026. Smithsonian Institution and USGS.Mayon (Luzon Island, Philippines): The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption at Mayon continued at low levels during 29 July-5 August. Each day the seismic network recorded 2-18 rockfalls and 11-29 volcanic earthquakes. Emissions were visible almost daily, rising as high as 900 m above the summit and drifting in multiple directions.Sulfur dioxide emissions averaged 1,220-2,777 tonnes per day. At 1519 on 2 August an ash plume visible in webcam images rose 200 m above the summit and drifted E. ... [read more] ... [show less] The lava flows had not advanced in the Mi-isi (S), Bonga (SE), and Basud (E) drainages since 22 July, remaining 2,7, 3.2, and 3.8 km long, respectively. The last Strombolian event occurred on 26 July and the last pyroclastic density current was recorded on 28 July. The Alert Level was lowered to 2 (on a 0-5 scale) at 1500 on 5 August 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.Ibu (Halmahera, Indonesia): 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 MOV E AT 07/1620Z EST VA DTG:07/1640Z to 7000 ft (2100 m)...6 Aug:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity at Ibu continued during 30 July-5 August, with daily eruptive events recorded by the seismic network. Daily gray ash plumes rose 200-800 m above the summit and drifted N, NE, and SE. 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.Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Ibu. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 30 July-5 August 2026. Smithsonian Institution and USGS.Sinabung (Sumatra, Indonesia): The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported increased seismicity at Sinabung on 1 August. The seismic network recorded an increase in the number of deep volcanic earthquakes, along with low-frequency earthquakes, hybrid earthquakes, and signals indicating emissions, all of which were rarely recorded. White steam-and-gas emissions rose as high as 600 m above the lava dome.The Alert Level remained at 2 (on a scale of 1-4) and the public was warned to stay at least 2 km away from the summit and 3.5 km on the SE flank. ... [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 REP FM GND MOV W AT 07/1758Z EST VA DTG:07/1920Z to 9000 ft (2700 m)...6 Aug:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity continued at Lewotobi Laki-Laki during 30 July-5 August. Multiple daily gray ash plumes rose 200-1,200 m above the summit and drifted in various directions. 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, 30 July-5 August 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 OBS MOV NW AT 07/1100Z EST VA DTG:07/1800Z to 7000 ft (2100 m)...6 Aug:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported ongoing eruptive activity at Lewotolok during 30 July-5 August. Daily white plumes rose as high as 200 m above the summit and drifted in multiple directions. Ash plumes rose 600 m above the summit and drifted SW at 1316 on 2 August and rose 700 m above the summit and drifted SW and W at 1650 on 3 August.Incandescent material was periodically ejected above the summit, notably on 30 July and 4 August. 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): The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported ongoing eruptive activity at Krakatau during 30 July-5 August. White plumes were visible on most days rising 100 m above the summit; weather conditions prevented views during 31 July-1 August. According to the Darwin Volcanic Ash Advisory Centre (VAAC) a dense steam plume with possible ash was visible in satellite images rising 1.5 km (5,000 ft) a.s.l. and drifting SW.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: Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Darwin Volcanic Ash Advisory Centre (VAAC)---Merapi (Central Java, Indonesia): The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that the eruption at Merapi (on Java) continued during 30 July-5 August with lava avalanches produced by the active lava dome on the upper SW flank. The seismic network recorded 2-14 daily lava avalanches that traveled as far as 2 km down the Sat/Putih, Krasak, and Bebeng drainages on the SW flank and the Boyong drainage (S flank) on most days; none were reported on 3 August and 30 were reported on 5 August. One pyroclastic flow traveled down the flank on 31 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 MOV W OBS AT 07/1250Z OBS VA DTG:07/1300Z to 15000 ft (4600 m)...6 Aug:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity continued at Semeru during 30 July-5 August, with daily eruptive events recorded by the seismic network. Daily white-to-gray or gray ash plumes rose 300-900 m above the summit and drifted multiple directions. 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, 30 July-5 August 2026. Smithsonian Institution and USGS.Marapi (Western Sumatra, Indonesia): The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Marapi (on Sumatra) continued during 30 July-5 August. An eruptive event was recorded at 0539 on 30 July by the seismic network but not visually observed due to weather conditions. Later that day white plumes rose as high as 400 m above the summit.Emissions were not visible during the rest of the week. The Alert Level remained at 2 (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)---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 MOV NE AT 07/1600Z EST VA DTG:07/1700Z to 7000 ft (2100 m)...6 Aug:The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Dukono continued during 30 July-5 August. Daily white-and-gray ash plume rose 500-900 m above the summit and drifted mainly NW, N, NE, and E. 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.Sources: Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM) ... [read more] ... [show less] ---Global Volcanism Program, 2026. Report on Dukono. In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 30 July-5 August 2026. Smithsonian Institution and USGS.Aoba (Vanuatu): The Wellington Volcanic Ash Advisory Center (VAAC) reported that ash plumes at Ambae were identified in satellite images rising 3 km (10,000 ft) a.s.l. and drifting SE on 30 July and rising 4.6 km (15,000 ft) a.s.l. and drifting SE on 4 August.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. ... [read more] ... [show less] Sources: Sources: Wellington Volcanic Ash Advisory Center (VAAC), Vanuatu Meteorology and Geohazards Department (VMGD)---Kilauea (Hawai'i): 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 29 July-5 August. Incandescence at the N vent was mostly intermittent during the week and occasional flames were visible through 2 August. Incandescence at the S vent was intermittent mainly during the last part of the week.A crack, slightly upslope of the S vent, exposed hot material at about 0209 on 30 July causing a prominent bright feature in webcams; glow from the crack sometimes visible during the rest of the week. The Volcano Alert Level remained at Advisory and the Aviation Color Code remained at Yellow. ... [read more] ... [show less] Sources: Source: US Geological Survey Hawaiian Volcano Observatory (HVO)---Great Sitkin (United States, Aleutian Islands): The Alaska Volcano Observatory (AVO) reported that slow lava effusion continued to feed a thick flow in Great Sitkin’s summit crater during 29 July-5 August based on webcam and satellite images. The flow advanced mainly ESE. Minor earthquakes were detected daily.Weather clouds often obscured webcam and satellite views during most of the week, though minor steaming was occasionally observed in satellite images. Elevated surface temperatures were identified in satellite images during 4-5 August. 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): (6 Aug) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EMS PSBLSantiaguito (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 20 kts in W direction.The full report is as follows: NEW VA EMS OBS to 14000 ft (4300 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: CONS VA EM to 14000 ft (4300 m)...7 Aug:Following the latest paroxysm episode at the volcano over the past few days, significant morphological changes to the edifice occurred. The current picture of the volcano captured from San Pedro Yepocapa revealed a scar in ravine partially filled by massive amounts of mostly loose volcanic material accumulated from numerous pyroclastic flows. Lahars (mud flows) might occur during heavy rainfall in the zone, as rain water can remobilize such fresh ash deposits....6 Aug:The Instituto Nacional de Sismología, Vulcanologia, Meteorologia e Hidrología (INSIVUMEH) reported that eruptive activity at Fuego continued during 29 July-5 August with an escalation of activity beginning on 2 August. During 29 July-2 August daily Strombolian and Vulcanian explosions recorded by the seismic network, at rates of 6-11 per hour, 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), Las Lajas (SE), and Honda drainages, sometimes reaching vegetated areas. Ashfall was reported in areas downwind during 1-2 August, including Panimaché, Morelia, Santa Sofía, El Porvenir, San Pedro Yepocapa, and Sangre de Cristo. ... [read more] ... [show less] Normally the seismic network records 250-350 explosions per day, though at around 1430 on 2 August the eruptive pattern changed. Explosions became nearly continuous, emissions and crater incandescence were observed[EV2.1], and acoustic tremor signals had characteristics not recorded since 5 June 2025. Incandescent lava fragments and blocks were ejected 100-200 m above the summit, with large amounts of the ejecta falling into the Ceniza and Seca-Santa Teresa drainages.Starting at about 0600 on 3 August ash-and-gas emissions intensified along with the amplitude of seismic signals. Crater incandescence continued to be visible, and pyroclastic flows descended the Ceniza and Seca drainages 2-3 km. Strombolian activity intensified during 0830-1150 with denser and larger ash-and-gas plumes, increased seismicity, and pyroclastic flows that traveled as far as 5 km down the Seca.Telica (Nicaragua): The Washington Volcanic Ash Advisory Center (VAAC) reported that ash plumes at Telica were identified in webcam and satellite images during 30 July-1 August rising to 2.1-2.4 km (7,000-8,000 ft) a.s.l. and drifting W and SW.Sources: Source: 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, 30 July-5 August 2026. Smithsonian Institution and USGS.Puracé (Colombia): The Servicio Geologico Colombiano (SGC) reported that eruptive activity at Puracé began to increase on 20 July and continued to intensify. By 1 August the seismic network recorded increases in the intensity of continuous tremor and signals indicating ash emissions. Gas-and-ash emissions had risen as high as 3.4 km above the crater rim and the temperature of ejecta was as high as 140 degrees Celsius.Sulfur dioxide flux peaked at 4,200 tons per day (t/d) and soil-measured carbon dioxide levels reached a concentration of 688 parts per million. Ground deformation persisted in the area between the Puracé, Piocollo, and Curiquinga volcanoes. SGC noted that the data represented the highest values recorded at Puracé; at 1130 the Alert Level was raised to Orange (the second highest level on a four-color scale) and the public was warned to stay away from the Puracé, Piocollo, and Curiquinga volcanoes. ... [read more] ... [show less] During 2-5 August signals associated with fluid movement (long-period earthquakes and spasmodic tremor) continued to be located mainly beneath Puracé at depths less than 1 km. Although sulfur dioxide and carbon dioxide emissions fluctuated and decreased overall, levels remained above baseline; sulfur dioxide averaged 1,965 t/d on 4 August and 1,010 t/d on 5 August. Seismic activity associated with rock fracturing processes continued at low levels with signals located at depths of 1-3 km.Ash plumes rose to lower heights, though ashfall continued to impact residents. Six ash emissions during 1-2 August rose as high as 1 km above the crater rim and drifted W and NW, causing ashfall in the N part of Popayán (28 km NW) and in the rural settlements of Cristales (NW), Pisanrabó, Tabío, and Hispala (32 km NW) in the municipality of Puracé. Three ash plumes rose up to 500 m above the crater rim and drifted W during 2-3 August, causing ashfall in Cristales, Loma Linda, and 20 de Julio villages, in the municipality of Puracé, and in the municipal seat of Coconuco.Sangay (Ecuador): (7 Aug) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NEW VA EMS...6 Aug:The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Sangay during 8-15 July. Visible observations and instrumental data indicated decreasing activity. The seismic network recorded 5-12 daily explosions.Weather conditions obscured webcam and satellite views on most days; no emissions were visible during clear or partially clear views during 29-30 July and on 3 August. 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): 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: VA EM OBSD to 14000 ft (4300 m)...6 Aug:The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that eruptive activity at Reventador continued at a high level during 29 July-5 August. Seismicity included 55-91 daily explosions, long-period earthquakes, harmonic tremor, and tremor associated with emissions. Daily ash-and-gas plumes were visible rising 300-1,600 m above the crater rim and drifting mainly NW, W, and SW.Incandescent blocks were also visible during dark hours each day rolling as far as 2.1 km down the flanks. Weather clouds sometimes obscured webcam and satellite views. 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): The Instituto Geofísico del Perú’s (IGP) Centro Vulcanológico Nacional (CENVUL) reported continuing eruptive activity at Sabancaya during 27 July-2 August. The seismic network detected 47 seismic events related to the movement of magmatic fluids, along with additional earthquakes indicating rock fracturing. No explosions were recorded.Gas, steam, and ash plumes periodically rose as high as 2.5 km above the crater rim and drifted less than 10 km E and SE. Thermal anomalies on the crater floor were identified in satellite images and moderate sulfur dioxide emissions averaged 870 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 7 Aug 2026: