Union City, CA Weather

Updated:  Sat, 13-Sep-2025 6:10pm EDT 
  clear Temperature: 67.9°F     /hr Humidity: 71% Dew Point: 58.1 Wind: WNW  5.5 mph Gust: 5.0 mph Pressure: 29.878 inHg  Steady Rain Today: 0.00 in UV-index: 0.0  None

Volcanic Activity Reports

Volcanoes – The Watchers

• The Weekly Volcanic Activity Report: September 3–9, 2025
  Sep 13 2025 at 08:06:00 UTC
  New activity/unrest was reported for 5 volcanoes from September 3 to 9, 2025. During the same period, ongoing activity was reported for 21 volcanoes.

  Source

• Rainfall keeps lahar hazard active at Fuego volcano after initial flows, Guatemala
  Sep 11 2025 at 13:18:54 UTC
  Weak to moderate lahars descended from Fuego volcano, Guatemala, at 19:17 LT on September 10, 2025, moving through Barranca Ceniza and into the Zarco and Mazate rivers, tributaries of the Achíguate River. The National Institute of Seismology, Volcanology, Meteorology and Hydrology (INSIVUMEH) reported that conditions remain favorable for additional lahars on the southwestern flanks.

  Source

• Fumarole temperatures and gas fluxes rise at Vulcano volcano, Italy
  Sep 8 2025 at 01:54:19 UTC
  Carbon dioxide fluxes at Vulcano volcano, Aeolian Islands, Italy, sharply increased in August 2025, reaching more than 40 000 g/m²/day on August 18, before stabilizing around 30 000 g/m²/day.

  Source

• Lewotobi Laki-laki volcano alert raised to highest level, Indonesia
  Sep 7 2025 at 10:12:08 UTC
  Indonesia's Geological Agency raised the alert status of Mount Lewotobi Laki-laki in East Flores to Level IV (Awas) at 10:00 WITA on September 6, 2025, due to increased seismicity, continuous tremor, and deformation indicating shallow magma ascent.

  Source

Worldwide Volcano News

• Volcanoes Today, 14 Sep 2025: Fuego volcano, Popocatépetl, Semeru, Dukono, Sabancaya
  Sep 13 2025 at 9:00 pm EDT
  


• Popocatépetl Volcano Volcanic Ash Advisory: PSBL VA EMS
  Sep 13 2025 at 9:00 pm EDT
  
  Satellite image of Popocatépetl volcano on 14 Sep 2025
  
  


• Fuego Volcano Volcanic Ash Advisory: PSBL VA EMS
  Sep 13 2025 at 8:00 pm EDT
  
  
  


• Dukono Volcano Volcanic Ash Advisory: CONTINUOUS VA TO FL070 OBS AT 13/2250Z EXTD WNW to 7000 ft (2100 m)
  Sep 13 2025 at 7:15 pm EDT
  
  Satellite image of Dukono volcano on 13 Sep 2025
  
  


• Sabancaya Volcano Volcanic Ash Advisory: PUFF EMISSION to 27000 ft (8200 m)
  Sep 13 2025 at 7:15 pm EDT
  
  
  


• Semeru Volcano Volcanic Ash Advisory: VA TO FL140 LAST REPORTED AT 13/2213Z EST VA DTG: 13/2220Z to 14000 ft (4300 m)
  Sep 13 2025 at 6:45 pm EDT
  
  
  


• Volcanic activity worldwide 13 Sep 2025: Fuego volcano, Popocatépetl, Semeru, Ibu, Dukono, Rincón ...
  Sep 13 2025 at 5:00 pm EDT
  
  Map of today's active volcanoes
  Ibu (Halmahera, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ERUPTION LAST REPORTED AT 13/1601Z EST VA DTG:13/1940Z
  
  Lewotolo (Lesser Sunda Islands): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA REPORTED TO FL060 AT 13/1008Z EST VA DTG:13/1020Z
  
  Semeru (East Java, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ERUPTION LAST REPORTED AT 13/0814Z EST VA DTG:13/1020Z
  
  Dukono (Halmahera): (12 Sep) 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 W AT 12/2250Z OBS VA DTG:12/2310Z to 7000 ft (2100 m)
  
  Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 .
  The full report is as follows: VA SEEN IN SAT MOV W to 20000 ft (6100 m)
  
  Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington 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 SEEN IN SAT AND WEBCAM to 15000 ft (4600 m)
  
  Rincón de la Vieja (Costa Rica): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: RPT BASED ON VONA
  
  Nevado del Ruiz (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA HAS DSIPTD IN SAT
  
  Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20500 ft (6200 m) altitude or flight level 205 .
  The full report is as follows: LGT VA EMS to 20500 ft (6200 m)
  
  Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VONA RPTD VA EMS
  


• Ibu Volcano Volcanic Ash Advisory: ERUPTION LAST REPORTED AT 13/1601Z EST VA DTG: 13/1940Z
  Sep 13 2025 at 4:00 pm EDT
  
  
  


• Rincón de la Vieja Volcano Volcanic Ash Advisory: RPT BASED ON VONA
  Sep 13 2025 at 1:30 pm EDT
  
  
  


• Reventador Volcano Volcanic Ash Advisory: VONA RPTD VA EMS
  Sep 13 2025 at 1:15 pm EDT
  
  
  


• Sangay Volcano Volcanic Ash Advisory: LGT VA EMS to 20500 ft (6200 m)
  Sep 13 2025 at 12:30 pm EDT
  
  
  


• Nevado del Ruiz Volcano Volcanic Ash Advisory: VA HAS DSIPTD IN SAT
  Sep 13 2025 at 11:00 am EDT
  
  
  


• Popocatépetl Volcano Volcanic Ash Advisory: VA SEEN IN SAT MOV W to 20000 ft (6100 m)
  Sep 13 2025 at 9:30 am EDT
  
  
  


• Fuego Volcano Volcanic Ash Advisory: VA SEEN IN SAT AND WEBCAM to 15000 ft (4600 m)
  Sep 13 2025 at 8:45 am EDT
  
  
  


• Semeru Volcano Volcanic Ash Advisory: ERUPTION LAST REPORTED AT 13/0814Z EST VA DTG: 13/1020Z
  Sep 13 2025 at 6:45 am EDT
  
  Satellite image of Semeru volcano on 13 Sep 2025
  
  


• Lewotolo Volcano Volcanic Ash Advisory: VA REPORTED TO FL060 AT 13/1008Z EST VA DTG: 13/1020Z
  Sep 13 2025 at 6:45 am EDT
  
  
  


• Nevado del Ruiz Volcano Volcanic Ash Advisory: VA EM DETECTED to 20000 ft (6100 m)
  Sep 13 2025 at 5:00 am EDT
  
  
  


• Ibu Volcano Volcanic Ash Advisory: ERUPTION LAST REPORTED AT 13/0510Z EST VA DTG: 13/0740Z
  Sep 13 2025 at 4:15 am EDT
  
  Satellite image of Ibu volcano on 13 Sep 2025
  
  


• Reventador Volcano Volcanic Ash Advisory: VA EM DETECTED
  Sep 13 2025 at 3:15 am EDT
  
  
  


• Sangay Volcano Volcanic Ash Advisory: LGT VA EM LKLY
  Sep 13 2025 at 1:15 am EDT
  
  
  


• Fuego Volcano Volcanic Ash Advisory: FQT VA EM
  Sep 12 2025 at 9:15 pm EDT
  
  
  


• Volcanic activity worldwide 12 Sep 2025: Santiaguito volcano, Pacaya, Fuego, Popocatépetl, Soputan,...
  Sep 12 2025 at 5:00 pm EDT
  
  Map of today's active volcanoes
  Shiveluch (Kamchatka): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 17000 ft (5200 m) altitude or flight level 170 and is moving at 15 kts in E direction.
  The full report is as follows: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY OBS VA DTG:12/1120Z to 17000 ft (5200 m)
  
  Kusatsu-Shirane (Honshu): (11 Sep) The Japan Meteorological Agency (JMA) reported that unrest activity increased at Kusatsu-Shiranesan between 9 September 2025 (local) and 10 September 2025 (local). The alert level remained at "Level 2 - Restriction on proximity to the crater" (on a 5-level scale).
  Source: Japan Meteorological Agency (JMA)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Restriction on proximity to the crater" (on a 5-level scale)
  
  
  Suwanose-jima (Ryukyu Islands): (12 Sep) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20250912/0031Z FL080 EXTD N OBS VA DTG:12/0030Z
  
  Canlaon (Central Philippines): (11 Sep) The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption continued at Kanlaon on 10 September 2025 (local). An ash emission event lasting 20 minutes was recorded; plumes rose to 600 meters above the vent. The alert level remained at "2 - Moderate Level of Volcanic Unrest" (level 2 on a 0–5 level scale).
  Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "2 - Moderate Level of Volcanic Unrest" (level 2 on a 0–5 level scale)
  
  
  Taal (Luzon, Philippines): (11 Sep) The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Taal on 10 September 2025 (local). Plume(s) rose to a maximum of 600 meters (1,969 feet) above the vent. A total of 6 episodes of volcanic tremor were recorded. An episode of continuous tremor began at around 0653 on 10 September. The alert level remained at "1 - Low-Level Unrest" (on a 0–5 level scale).
  Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "1 - Low-Level Unrest" (on a 0–5 level scale)
  
  
  Mayon (Luzon Island, Philippines): (11 Sep) The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Mayon on 10 September 2025 (local). Plume(s) were reported. Very faint crater incandescence, observable only through a telescope, was reported. There was 1 seismically detected rockfall. The alert level remained at "1 - Abnormal" (on a 0–5 level scale).
  Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "1 - Abnormal" (on a 0–5 level scale)
  
  
  Bulusan (Luzon Island, Philippines): (11 Sep) The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Bulusan on 10 September 2025 (local). Plume(s) rose to a maximum of 100 meters (328 feet) above the vent. The alert level remained at "1 - Low Level of Volcanic Unrest" (level 1 on a 0–5 level scale).
  Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "1 - Low Level of Volcanic Unrest" (level 1 on a 0–5 level scale)
  
  
  Telong (northern Sumatra, Indonesia): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Telong, Bur ni on 10 September 2025 (local). The alert level remained at "Level 1 - Normal" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 1 - Normal" (on a 4-level scale)
  
  
  Karangetang (Siau Island, Sangihe Islands, Indonesia): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Karangetang on 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 150 meters (492 feet) above the vent. The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Raung (East Java): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Raung on 10 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Gamalama (Halmahera): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Gamalama on 10 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  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 and is moving at 05 kts in NW direction.
  The full report is as follows: VA TO FL070 LAST RPT AT 12/1453Z EST VA DTG:12/1940Z to 7000 ft (2100 m)
  ...11 Sep:
  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Ibu on 10 September 2025 (local). There were 128 explosions reported, with plumes rising to a maximum of 500 meters (1,640 feet) above the vent. The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Tangkubanparahu (West Java): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Tangkuban Parahu on 10 September 2025 (local). Gas and vapor plume(s) were reported. The alert level remained at "Level 1 - Normal" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 1 - Normal" (on a 4-level scale)
  
  
  Lewotobi (Flores): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Lewotobi (Laki-Laki) on 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 500 meters (1,640 feet) above the vent. There were 3 seismically detected rockfalls. The alert level remained at "Level 4 - Caution" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 4 - Caution" (on a 4-level scale)
  
  
  Soputan (North Sulawesi, Indonesia): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Soputan on 10 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Lewotolo (Lesser Sunda Islands): (12 Sep) 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 OBS AT 11/2340Z MOV W OBS VA DTG:11/2350Z to 8000 ft (2400 m)
  ...11 Sep:
  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Lewotolok on 10 September 2025 (local). There were 41 explosions reported, with plumes rising to a maximum of 800 meters (2,625 feet) above the vent. The alert level remained at "Level 3 - Standby" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 3 - Standby" (on a 4-level scale)
  
  
  Merapi (Central Java, Indonesia): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Merapi on 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 100 meters (328 feet) above the vent. There were 84 seismically detected rockfalls. The alert level remained at "Level 3 - Standby" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 3 - Standby" (on a 4-level scale)
  
  
  Bromo (East Java, Indonesia): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Tengger Caldera on 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 500 meters (1,640 feet) above the vent. The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Semeru (East Java, Indonesia): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Semeru on 10 September 2025 (local). There were 46 seismically detected explosions reported. There were 6 seismically detected rockfalls. The alert level remained at "Level 2 - Alert" (on a 4-level scale). Activity also included: seismically detected flowage event.
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Marapi (Western Sumatra, Indonesia): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Marapi on 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 100 meters (328 feet) above the vent. The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Dempo (Sumatra): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Dempo on 10 September 2025 (local). There was 1 seismically detected rockfall. The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Dukono (Halmahera): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA REPORTED TO FL070 MOV SLOWLY NW AT 11/2254Z
  ...11 Sep:
  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Dukono on 10 September 2025 (local). Ash and gas plume(s) rose to a maximum of 700 meters (2,297 feet) above the vent. The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Gede-Pangrango (West Java): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Gede-Pangrango on 10 September 2025 (local). The alert level remained at "Level 1 - Normal" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 1 - Normal" (on a 4-level scale)
  
  
  Awu (Sulawesi & Sangihe Islands): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Awu on 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 20 meters (66 feet) above the vent. The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Kerinci (Sumatra): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Kerinci on 10 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  
  
  Lokon-Empung (North Sulawesi, Indonesia): (11 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Lokon-Empung on 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 75 meters (246 feet) above the vent. Minor glow was observed at the vent in webcam images during the night. The alert level remained at "Level 3 - Standby" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 3 - Standby" (on a 4-level scale)
  
  
  Kilauea (Hawai'i): (11 Sep) The United States Geological Survey - Hawaiian Volcano Observatory (USGS-HVO) reported that the eruption continued at Kilauea between 9 September 2025 (local) and 10 September 2025 (local). Elevated degassing activity continued from the north vent. The alert level remained at "Watch" (level 3 on a 4-level scale). The aviation alert level remained at "Orange" (level 3 on a 4-level scale).
  Source: United States Geological Survey - Hawaiian Volcano Observatory (USGS-HVO)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Watch" (level 3 on a 4-level scale)
  
  
  Shishaldin (Aleutian Islands, Alaska): (11 Sep) The United States Geological Survey - Alaska Volcano Observatory (USGS-AVO) reported that unrest continued at Shishaldin between 9 September 2025 (local) and 10 September 2025 (local). The alert level remained at "Advisory" (level 2 on a 4-level scale). The aviation alert level remained at "Yellow" (level 2 on a 4-level scale).
  Source: United States Geological Survey - Alaska Volcano Observatory (USGS-AVO)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Advisory" (level 2 on a 4-level scale)
  
  
  Great Sitkin (United States, Aleutian Islands): (11 Sep) The United States Geological Survey - Alaska Volcano Observatory (USGS-AVO) reported that the eruption continued at Great Sitkin between 9 September 2025 (local) and 10 September 2025 (local). Elevated surface temperatures were detected in satellite imagery. Lava continued to erupt in the summit crater. The alert level remained at "Watch" (level 3 on a 4-level scale). The aviation alert level remained at "Orange" (level 3 on a 4-level scale).
  Source: United States Geological Survey - Alaska Volcano Observatory (USGS-AVO)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Watch" (level 3 on a 4-level scale)
  
  
  Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 .
  The full report is as follows: NEW VA EMS to 20000 ft (6100 m)
  ...11 Sep:
  The Centro Nacional de Prevención de Desastres (CENAPRED) reported that the eruption continued at Popocatépetl between 9 September 2025 (local) and 10 September 2025 (local). Ash and gas plume(s) were reported. Crater incandescence was observed in a webcam image at around 0546 on 10 September. The alert level remained at "Yellow Alert - Phase 2" (level 4 on a 7-level scale).
  Source: Centro Nacional de Prevención de Desastres (CENAPRED)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Yellow Alert - Phase 2" (level 4 on a 7-level scale)
  
  
  Santiaguito (Guatemala): (11 Sep) The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported that the eruption continued at Santa María between 9 September 2025 (local) and 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 100 meters (328 feet) above the vent. Incandescence was observed at El Caliente dome during the night and early morning. There were explosions reported, occurring at a rate of up to 5 per hour, with plumes rising to a maximum of 800 meters (2,625 feet) above the vent. There were incandescent rockfalls.
  Source: Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: unavailable or not collected
  
  
  Pacaya (Guatemala): (11 Sep) The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported that unrest continued at Pacaya between 9 September 2025 (local) and 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 100 meters (328 feet) above the vent.
  Source: Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: unavailable or not collected
  
  
  Fuego (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: LGT VA EMS CONT
  ...11 Sep:
  The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported that the eruption continued at Fuego between 9 September 2025 (local) and 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 100 meters (328 feet) above the vent. Explosions were accompanied by rumbling noises. Continuous degassing activity produced sounds resembling a train engine, lasting 30–40 seconds. There were explosions reported, occurring at a rate of up to 10 per hour, with plumes rising to a maximum of 637 meters (2,090 feet) above the vent. There were incandescent rockfalls. Shockwaves were generated by explosions.
  Source: Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: unavailable or not collected
  
  
  Turrialba (Costa Rica): (11 Sep) The Observatorio Vulcanológico y Sismológico de Costa Rica - Universidad Nacional (OVSICORI-UNA) reported that unrest continued at Turrialba between 9 September 2025 (local) and 10 September 2025 (local). Gas and vapor plume(s) were reported. The alert level remained at "Level 2 - Warning" (on a 0–4 level scale).
  Source: Observatorio Vulcanológico y Sismológico de Costa Rica - Universidad Nacional (OVSICORI-UNA)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Warning" (on a 0–4 level scale)
  
  
  Rincón de la Vieja (Costa Rica): (11 Sep) The Observatorio Vulcanológico y Sismológico de Costa Rica - Universidad Nacional (OVSICORI-UNA) reported that unrest continued at Rincón de la Vieja between 9 September 2025 (local) and 10 September 2025 (local). There was 1 seismically detected eruption reported. The alert level remained at "Level 2 - Warning" (on a 0–4 level scale). The aviation alert level remained at "Yellow" (level 2 on a 4-level scale).
  Source: Observatorio Vulcanológico y Sismológico de Costa Rica - Universidad Nacional (OVSICORI-UNA)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Warning" (on a 0–4 level scale)
  
  
  Poas (Costa Rica): (11 Sep) The Observatorio Vulcanológico y Sismológico de Costa Rica - Universidad Nacional (OVSICORI-UNA) reported that the eruption continued at Poás between 9 September 2025 (local) and 10 September 2025 (local). The alert level remained at "Level 2 - Warning" (on a 0–4 level scale). The aviation alert level remained at "Yellow" (level 2 on a 4-level scale).
  Source: Observatorio Vulcanológico y Sismológico de Costa Rica - Universidad Nacional (OVSICORI-UNA)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Level 2 - Warning" (on a 0–4 level scale)
  
  
  Nevado del Ruiz (Colombia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 19000 ft (5800 m) altitude or flight level 190 .
  The full report is as follows: VONA RPRT RCVD to 19000 ft (5800 m)
  
  Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 .
  The full report is as follows: VA EM SEEN IN SAT to 22000 ft (6700 m)
  ...11 Sep:
  The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Sangay between 9 September 2025 (local) and 10 September 2025 (local). Ash and gas plume(s) rose to a maximum of 800 meters (2,625 feet) above the vent. There were 34 seismically detected explosions reported. The alert level remained at "2 - Yellow" (on a 4-level scale).
  Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "2 - Yellow" (on a 4-level scale)
  
  
  Reventador (Ecuador): (12 Sep) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington 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 MOVG WNW to 15000 ft (4600 m)
  ...11 Sep:
  The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Reventador between 9 September 2025 (local) and 10 September 2025 (local). Ash and gas plume(s) rose to a maximum of 1,000 meters (3,281 feet) above the vent. There were 84 seismically detected explosions reported. There were incandescent rockfalls, descending 1,000 m below the crater. The alert level remained at "3 - Orange" (on a 4-level scale).
  Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "3 - Orange" (on a 4-level scale)
  
  
  Sabancaya (Peru): (11 Sep) The Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP) reported that unrest continued at Sabancaya between 9 September 2025 (local) and 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 1,300 meters (4,265 feet) above the vent. The alert level remained at "Yellow" (level 2 on a 4-level scale).
  Source: Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP)
  ... [read more] ... [show less]
  Current Alerts:
  Observatory alert level: "Yellow" (level 2 on a 4-level scale)
  
  Volcano Activity Summary for 12 Sep 2025:
  


• Kusatsu-Shiranesan Volcano (Japan) activity update Sep 10, 2025 - Unrest activity increased
  Sep 11 2025 at 6:15 pm EDT
  

  The Japan Meteorological Agency (JMA) reported that unrest activity increased at Kusatsu-Shiranesan between 9 September 2025 (local) and 10 September 2025 (local). The alert level remained at "Level 2 - Restriction on proximity to the crater" (on a 5-level scale).
  Source: Japan Meteorological Agency (JMA)
  
  Current Alerts:
  Observatory alert level: "Level 2 - Restriction on proximity to the crater" (on a 5-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Kerinci Volcano (Indonesia) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Kerinci on 10 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Lokon-Empung Volcano (Indonesia) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Lokon-Empung on 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 75 meters (246 feet) above the vent. Minor glow was observed at the vent in webcam images during the night. The alert level remained at "Level 3 - Standby" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  
  Current Alerts:
  Observatory alert level: "Level 3 - Standby" (on a 4-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Karangetang Volcano (Indonesia) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Karangetang on 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 150 meters (492 feet) above the vent. The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Gede-Pangrango Volcano (Indonesia) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Gede-Pangrango on 10 September 2025 (local). The alert level remained at "Level 1 - Normal" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  
  Current Alerts:
  Observatory alert level: "Level 1 - Normal" (on a 4-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Bulusan Volcano (Philippines) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Bulusan on 10 September 2025 (local). Plume(s) rose to a maximum of 100 meters (328 feet) above the vent. The alert level remained at "1 - Low Level of Volcanic Unrest" (level 1 on a 0–5 level scale).
  Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
  
  Current Alerts:
  Observatory alert level: "1 - Low Level of Volcanic Unrest" (level 1 on a 0–5 level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Bur ni Telong Volcano (Indonesia) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Telong, Bur ni on 10 September 2025 (local). The alert level remained at "Level 1 - Normal" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  
  Current Alerts:
  Observatory alert level: "Level 1 - Normal" (on a 4-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Gamalama Volcano (Indonesia) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Gamalama on 10 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Mayon Volcano (Philippines) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Mayon on 10 September 2025 (local). Plume(s) were reported. Very faint crater incandescence, observable only through a telescope, was reported. There was 1 seismically detected rockfall. The alert level remained at "1 - Abnormal" (on a 0–5 level scale).
  Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
  
  Current Alerts:
  Observatory alert level: "1 - Abnormal" (on a 0–5 level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Rincón de la Vieja Volcano (Costa Rica) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Observatorio Vulcanológico y Sismológico de Costa Rica - Universidad Nacional (OVSICORI-UNA) reported that unrest continued at Rincón de la Vieja between 9 September 2025 (local) and 10 September 2025 (local). There was 1 seismically detected eruption reported. The alert level remained at "Level 2 - Warning" (on a 0–4 level scale). The aviation alert level remained at "Yellow" (level 2 on a 4-level scale).
  Source: Observatorio Vulcanológico y Sismológico de Costa Rica - Universidad Nacional (OVSICORI-UNA)
  
  Current Alerts:
  Observatory alert level: "Level 2 - Warning" (on a 0–4 level scale)
  Aviation Alert Level: "Yellow" (level 2 on a 4-level scale)
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Tangkuban Parahu Volcano (Indonesia) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Tangkuban Parahu on 10 September 2025 (local). Gas and vapor plume(s) were reported. The alert level remained at "Level 1 - Normal" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  
  Current Alerts:
  Observatory alert level: "Level 1 - Normal" (on a 4-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Tengger Caldera Volcano (Indonesia) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Tengger Caldera on 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 500 meters (1,640 feet) above the vent. The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Turrialba Volcano (Costa Rica) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Observatorio Vulcanológico y Sismológico de Costa Rica - Universidad Nacional (OVSICORI-UNA) reported that unrest continued at Turrialba between 9 September 2025 (local) and 10 September 2025 (local). Gas and vapor plume(s) were reported. The alert level remained at "Level 2 - Warning" (on a 0–4 level scale).
  Source: Observatorio Vulcanológico y Sismológico de Costa Rica - Universidad Nacional (OVSICORI-UNA)
  
  Current Alerts:
  Observatory alert level: "Level 2 - Warning" (on a 0–4 level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Taal Volcano (Philippines) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Taal on 10 September 2025 (local). Plume(s) rose to a maximum of 600 meters (1,969 feet) above the vent. A total of 6 episodes of volcanic tremor were recorded. An episode of continuous tremor began at around 0653 on 10 September. The alert level remained at "1 - Low-Level Unrest" (on a 0–5 level scale).
  Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
  
  Current Alerts:
  Observatory alert level: "1 - Low-Level Unrest" (on a 0–5 level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Soputan Volcano (Indonesia) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Soputan on 10 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).
  Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
  
  Current Alerts:
  Observatory alert level: "Level 2 - Alert" (on a 4-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Sabancaya Volcano (Peru) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP) reported that unrest continued at Sabancaya between 9 September 2025 (local) and 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 1,300 meters (4,265 feet) above the vent. The alert level remained at "Yellow" (level 2 on a 4-level scale).
  Source: Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP)
  
  Current Alerts:
  Observatory alert level: "Yellow" (level 2 on a 4-level scale)
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Shishaldin Volcano (United States) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The United States Geological Survey - Alaska Volcano Observatory (USGS-AVO) reported that unrest continued at Shishaldin between 9 September 2025 (local) and 10 September 2025 (local). The alert level remained at "Advisory" (level 2 on a 4-level scale). The aviation alert level remained at "Yellow" (level 2 on a 4-level scale).
  Source: United States Geological Survey - Alaska Volcano Observatory (USGS-AVO)
  
  Current Alerts:
  Observatory alert level: "Advisory" (level 2 on a 4-level scale)
  Aviation Alert Level: "Yellow" (level 2 on a 4-level scale)
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025

  
  


• Pacaya Volcano (Guatemala) activity update Sep 10, 2025 - Unrest
  Sep 11 2025 at 6:15 pm EDT
  

  The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported that unrest continued at Pacaya between 9 September 2025 (local) and 10 September 2025 (local). Gas and vapor plume(s) rose to a maximum of 100 meters (328 feet) above the vent.
  Source: Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH)
  
  Current Alerts:
  Observatory alert level: unavailable or not collected
  Aviation Alert Level: unavailable or not collected
  
  Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Sep 10, 2025