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 MOV NE, LAST REPORTED AT 15/0803Z to 7000 ft (2100 m)
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 LAST REPORTED AT 15/0744Z MOV NW to 7000 ft (2100 m)
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, LAST REPORTED AT 15/0649Z to 15000 ft (4600 m)
Ruapehu (North Island): (15 Jul) A swarm of small, relatively deep earthquakes occurred east of Mount Ruapehu early last week and lasted for two days. Despite the seismic activity, no significant changes have been observed at the volcano. The temperature of Te Wai ā-moe (Crater Lake) remains stable at approximately 12°C, and ongoing volcanic gas emissions continue to indicate heat and gas movement from within the volcano. Since the last update in May, the Crater Lake’s temperature has dropped from around 17°C to 12°C. During a site visit on 8 June, the team observed sulfur slicks on the lake’s surface—commonly linked to hot fluids melting sulfur on the lake floor. The lake was also found to be overflowing, suggesting continued inflow of hydrothermal fluids. Heat flux models estimate a consistent heat input ranging between 0 and 100 megawatts. ... [read more] ... [show less] Our continuous gas monitoring systems continue to record low but steady emissions of sulfur dioxide (SO₂), varying from roughly 0 to 150 tonnes per day. The recently installed multigas sensor at the lake’s outlet is also detecting ongoing emissions of carbon dioxide (CO₂) and SO₂. Although a local earthquake swarm was recorded, no other signs of volcanic change have been detected. This suggests that Mount Ruapehu remains in a state of typical background activity. Weather permitting, further gas flights and sampling of Crater Lake water are planned to monitor for any developing changes.
Popocatépetl (Central Mexico): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL CONT VA EM
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 . The full report is as follows: VA EMS OBS to 14000 ft (4300 m)
Sangay (Ecuador): 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 EMS OBS to 20000 ft (6100 m)
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: FRQT VA EMS OBS to 14000 ft (4300 m)
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: NO VA DETECTED
A swarm of small, relatively deep earthquakes occurred east of Mount Ruapehu early last week and lasted for two days. Despite the seismic activity, no significant changes have been observed at the volcano. The temperature of Te Wai ā-moe (Crater Lake) remains stable at approximately 12°C, and ongoing volcanic gas emissions continue to indicate heat and gas movement from within the volcano.
Since the last update in May, the Crater Lake’s temperature has dropped from around 17°C to 12°C. During a site visit on 8 June, the team observed sulfur slicks on the lake’s surface—commonly linked to hot fluids melting sulfur on the lake floor. The lake was also found to be overflowing, suggesting continued inflow of hydrothermal fluids. Heat flux models estimate a consistent heat input ranging between 0 and 100 megawatts.
Our continuous gas monitoring systems continue to record low but steady emissions of sulfur dioxide (SO₂), varying from roughly 0 to 150 tonnes per day. The recently installed multigas sensor at the lake’s outlet is also detecting ongoing emissions of carbon dioxide (CO₂) and SO₂.
Although a local earthquake swarm was recorded, no other signs of volcanic change have been detected. This suggests that Mount Ruapehu remains in a state of typical background activity. Weather permitting, further gas flights and sampling of Crater Lake water are planned to monitor for any developing changes.
Source: GNS Science/GeoNet volcano activity update 15 July 2025
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 MOV NE, LAST REPORTED AT 13/0900Z to 7000 ft (2100 m)
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, LAST REPORTED AT 14/1201Z to 15000 ft (4600 m)
Popocatépetl (Central Mexico): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA EMS OBSD
Telica (Nicaragua): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 5000 ft (1500 m) altitude or flight level 050 and is moving at 20 kts in S direction. The full report is as follows: VA EMS OBS to 5000 ft (1500 m)
Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EMS PSBL
Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 . The full report is as follows: VA EMS OBS to 16000 ft (4900 m)
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 10 kts in NE direction. The full report is as follows: VA TO FL070, LAST REPORTED AT 13/0550Z MOV NE to 7000 ft (2100 m)
Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150, . The full report is as follows: VA TO FL150, OBS AT 13/1630Z MOV W OBS VA DTG:13/1630Z to 15000 ft (4600 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 and is moving at 10 kts in NW direction. The full report is as follows: NEW VA EMS OBS to 20000 ft (6100 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: DISCRETE VA EM. to 22000 ft (6700 m)
Volcano Activity Summary for 13 Jul 2025:
Satellite image of Kirishima volcano on 12 Jul 2025
Lewotolo (Lesser Sunda Islands): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 . The full report is as follows: VA TO FL060 REPORTED AT 12/1804Z MOV W EST VA DTG:12/1810Z to 6000 ft (1800 m)
Popocatépetl (Central Mexico): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: EM OF GASES AND STEAM PSBL
Nevado del Ruiz (Colombia): (12 Jul) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA OBS
Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 21000 ft (6400 m) altitude or flight level 210 and is moving at 40 kts in W direction. The full report is as follows: PSBL LGT VA EMS. to 21000 ft (6400 m)
Lewotobi (Flores): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 18000 ft (5500 m) altitude or flight level 180 . The full report is as follows: VA TO FL180 OBS AT 11/1310Z MOV SSW OBS VA DTG:11/1310Z to 18000 ft (5500 m)
Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 . The full report is as follows: VA TO FL150 OBS AT 11/1630Z MOV SSW OBS VA DTG:11/1630Z to 15000 ft (4600 m)
Popocatépetl (Central Mexico): (11 Jul) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA EM DTCTD
Santiaguito (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA OBS
Nevado del Ruiz (Colombia): (11 Jul) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL VA EM
Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EMS PSBL
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 EMS OBS to 14000 ft (4300 m)
Volcano Activity Summary for 11 Jul 2025:
Satellite image of Kirishima volcano on 11 Jul 2025
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 10 kts in E direction. The full report is as follows: VA TO FL070 LAST REPORTED AT 10/1142Z EST VA DTG:10/1230Z to 7000 ft (2100 m)
Lewotolo (Lesser Sunda Islands): 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 W direction. The full report is as follows: VA TO FL060 REPORTED AT 10/1118Z EST VA DTG:10/1120Z to 6000 ft (1800 m)
Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 . The full report is as follows: VA TO FL150 OBS AT 10/1710Z MOV SW OBS VA DTG:10/1710Z to 15000 ft (4600 m)
Marapi (Western Sumatra, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin 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 OBS TO FL140 AT 10/1750Z MOV NE OBS VA DTG:10/1750Z to 14000 ft (4300 m)
Kilauea (Hawai'i): (10 Jul) Another lava-fountaining episode (the 28th so far) started within the Halemaʻumaʻu crater floor at about 04:10 AM local time yesterday. The activity in the north vent produced tall, dome-shaped lava fountains reaching about 1200 ft (365 m) height associated with lava flows. ... [read more] ... [show less] Meanwhile, after 9 hours of continuing fountaining, the effusive eruption came to an end at 01:20 PM local time tonight. The south vent did not appear to activate at all during this episode and has been completely covered by new deposits.
Popocatépetl (Central Mexico): 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 EMS OBS to 22000 ft (6700 m)
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 . The full report is as follows: NEW VA EMS OBS to 14000 ft (4300 m)
Nevado del Ruiz (Colombia): (10 Jul) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL VA EM
Satellite image of Shiveluch volcano on 10 Jul 2025
