November 16 , 2025.
Italy , Stromboli :
November 15, 2025, 6:37 PM (5:37 PM UTC), Statement on STROMBOLI Activity
The National Institute of Geophysics and Volcanology, Etna Observatory, reports that images from surveillance cameras show that the lava flow fed by the North Crater area, mentioned in the November 13 bulletin, has ceased and is cooling. Explosive activity and lava eruptions persist in the North Crater area, at varying intensities.
From a seismic perspective, the average amplitude of volcanic tremors is currently at a moderate level. No significant changes have been observed in the frequency and amplitude of explosion earthquakes.
Analysis of data from ground deformation monitoring networks has revealed no significant changes.
Further information will be released soon.
Source : INGV.
Photo : Stromboli stati d’animo / Sebastiano Cannavo
Japan , Sakurajima :
An eruption occurred in the Minamidake crater on Mount Sakurajima in Kagoshima Prefecture just before 1 a.m. on Sunday, sending a plume of ash 4,400 meters into the air.
According to the Kagoshima local meteorological observatory, this is the first time a plume has exceeded 4,000 meters since Oct. 18 last year. Volcanic rocks reached the vicinity of the fifth station, 1.2 kilometers from the crater, but no pyroclastic flows were confirmed.
Sakurajima remains at volcanic alert level 3, which restricts entry to the mountain, and the meteorological observatory is urging caution against flying volcanic rocks.
Source et photo : japannews
Kamchatka , Krasheninnikov :
VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
Issued: November 15, 2025
Volcano: Krasheninnikov (CAVW #300190)
Current aviation colour code: ORANGE
Previous aviation colour code: orange
Source: KVERT
Notice Number: 2025-137
Volcano Location: N 54 deg 35 min E 160 deg 16 min
Area: Kamchatka, Russia
Summit Elevation: 1856 m (6087.68 ft)
Volcanic Activity Summary:
Moderate emission of ash from the volcano continues. An explosion sent ash up to 2.7 km a.s.l., and an ash plume is extending for 40 km to the south-west of the volcano.
An explosive-effusive eruption of the volcano continues. A danger of ash explosions up to 6 km (19,700 ft) a.s.l. remains. Ongoing activity could affect low-flying aircraft.
Volcanic cloud height:
2700 m (8856 ft) AMSL Time and method of ash plume/cloud height determination: 20251115/0100Z – Himawari-9 14m15
Other volcanic cloud information:
Distance of ash plume/cloud of the volcano: 40 km (25 mi)
Direction of drift of ash plume/cloud of the volcano: SW / azimuth 231 deg
Time and method of ash plume/cloud determination: 20251115/0100Z – Himawari-9 14m15
Remarks:
The first historical eruption of the volcano began on 02 August, 2025. The explosive-effusive eruption of the volcano continues. The previous effusive eruption of the volcano occurred 400-600 years ago.
Source : Kvert
Photo : N. Akbirova , 3/8/2025
Costa Rica , Poas :
OVSICORI-UNA Volcanic Monitoring Weekly Bulletin
November 14, 2025
Latitude: 10.20°N
Longitude: 84.23°W
Altitude: 2687 m
Current Activity Level: Alert
Tremor amplitude has been trending upward since the beginning of the month. Acoustic tremor remains almost nonexistent. The number of long-period events continues to increase. Three distal volcano-tectonic events were recorded. On November 12 at noon, a seismo-acoustic signal was observed, likely related to a slight detachment of material from the crater walls. This phenomenon was not confirmed by the camera. The geodetic network is not recording any significant deformation.
MultiGAS stations measured an average SO₂/CO₂ ratio of 1.3 ± 0.4 this week, slightly lower than last week’s value (1.6 ± 0.4). The H₂S/SO₂ ratio remained very low (< 0.1). The ExpoGAS station at the Visitor Lookout measured a maximum of 1 ppm of SO₂ this week, a relatively low concentration. DOAS stations detected a slight increase in SO₂ flux (253 ± 51 t/d) compared to the previous week (217 ± 46 t/d). Satellite measurements of atmospheric SO₂ continue to decline, peaking at 140 tonnes of SO₂ on November 12.
The lake level continues to rise, increasing by 0.4 m this week.
Source et photo : Ovsicori
Ecuador , Sangay :
DAILY REPORT ON THE STATE OF SANGAY VOLCANO, Saturday, November 15, 2025.
Geophysical Information Institute – EPN.
Surface Activity Level: Moderate, Surface Trend: No Change
Internal Activity Level: Moderate, Internal Trend: No Change
Seismicity: From November 14, 2025, 11:00 AM to November 15, 2025, 11:00 AM:
Seismicity:
Below is the count of seismic events recorded at the reference station:
Explosion (EXP): 1056
Rainfall/Lahars:
No rain has been recorded in the volcanic zone. **Heavy rainfall could remobilize accumulated material, generating mudflows and debris flows that would cascade down the volcano’s flanks and flow into adjacent rivers.**
Emission Column/Ash:
Several gas and ash emissions were observed by the monitoring camera network. These emissions reached altitudes between 400 and 1,000 meters above the crater and moved toward the northwest and northeast. In connection with this activity, the Washington VAAC issued two reports of ash emissions reaching altitudes between 600 and 900 meters above the crater and moving toward the west-northwest.
Gas:
The MOUNTS satellite system detected 30.30 tonnes of sulfur dioxide (SO₂), measured on November 14, 2025, at 1:44 p.m. local time.
Other monitoring parameters:
The MIROVA-MODIS satellite system recorded one thermal anomaly, the MIROVA-VIIRS 750 system recorded three, the MIROVA-VIIRS 375 system recorded three, and the FIRMS satellite system recorded five; all of these anomalies were detected within the last 24 hours.
Observation:
Last night, glows were observed at the crater using the monitoring camera system. At the time of writing, the volcano remains completely obscured by clouds.
Alert level: Yellow
Source : IGEPN
Photo : Eqphos fotografía
