October 14 , 2025.
Kamchatka , Klyuchevskoy :
VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
Issued: October 13 , 2025
Volcano: Klyuchevskoy (CAVW #300260)
Current aviation colour code: ORANGE
Previous aviation colour code: orange
Source: KVERT
Notice Number: 2025-113
Volcano Location: N 56 deg 3 min E 160 deg 38 min
Area: Kamchatka, Russia
Summit Elevation: 4750 m (15580 ft)
Volcanic Activity Summary:
The explosive eruption of the volcano continues. Series of explosions sent ash up to 7.2 km a.s.l., and ash clouds are moving to the east-northeast of the volcano.
The explosive eruption of the volcano continues. The danger of ash explosions up to 10 km (32,800 ft) a.s.l. remains. Ongoing activity could affect international and low-flying aircraft.
Volcanic cloud height:
7000-7200 m (22960-23616 ft) AMSL Time and method of ash plume/cloud height determination: 20251013/2040Z – Himawari-9 14m15
Other volcanic cloud information:
Distance of ash plume/cloud of the volcano: 57 km (35 mi)
Direction of drift of ash plume/cloud of the volcano: E / azimuth 80 deg
Time and method of ash plume/cloud determination: 20251013/2040Z – Himawari-9 14m15
Source : Kvert
Photo : Yu. Demyanchuk. IVS FEB RAS, KVERT
Chile , Hudson :
Seismology
Seismological activity during this period was characterized by:
1,053 VT-type earthquakes, associated with rock fracturing (volcano-tectonics). The most energetic earthquake, with a local magnitude (LM) of 2.9, occurred 3.1 km south-southwest of the volcanic edifice, at a depth of 1.1 km from the caldera center.
52 LP-type earthquakes, associated with fluid dynamics within the volcanic system (Long Period). The magnitude of the largest earthquake, assessed by the reduced displacement (RD) parameter, was 12 cm².
4 HB-type earthquakes, associated with both rock fracturing and fluid dynamics within the volcanic system (Hybrid). The magnitude of the largest earthquake, assessed by the reduced displacement (RD) parameter, was 9 cm².
Fluid Geochemistry
No atmospheric sulfur dioxide (SO₂) emission anomalies have been reported near the volcano, according to data published by the Tropospheric Monitoring Instrument (TROPOMI) and the Sulfur Dioxide Group of the Ozone Monitoring Instrument (OMI).
Geodesy
Monitoring of the volcanic system’s deformation during the current period was characterized by:
– A continuous trend of uplift and southeastward displacement at the station located southeast of the caldera. The recorded displacement rates were 0.3 cm/month vertically and 0.5 cm/month horizontally toward the southeast.
Consequently, no other notable changes in the deformation of this volcanic system were observed.
Monitoring Cameras
The images provided by the fixed camera installed near the volcanic system did not record any degassing plumes or variations related to surface activity.
Satellite Thermal Anomalies
During the period, no thermal anomalies were recorded in the area associated with the volcano, according to the analytical processing of Sentinel 2-L2A satellite images available in a combination of bands.
Satellite Geomorphological Analysis
According to available Planet Scope and Sentinel 2-L2A satellite images, no morphological changes related to volcanic activity have been identified.
Activity has remained at levels considered normal, suggesting the volcano’s stability. The technical volcanic alert remains in effect:
GREEN TECHNICAL ALERT: Active volcano with stable behavior – No immediate risk
Source : Sernageomin .
Photo : Patagonialink
Indonesia , Lewotobi Laki-laki :
An eruption of Mount Lewotobi Laki-laki occurred on Tuesday, October 14, 2025, at 00:39 WITA. The observed ash column was ± 1,000 m above the summit (± 2,584 m above sea level). The ash column was gray and of strong intensity, oriented towards the southwest and west. This eruption was recorded by seismograph with a maximum amplitude of 10.5 mm and a duration of 248 seconds.
Seismic Observations
One eruption earthquake with an amplitude of 44.4 mm and a duration of 409 seconds.
One emission earthquake with an amplitude of 2.9 mm and a duration of 33 seconds.
Six nonharmonic tremors with an amplitude of 2.9 to 7.4 mm and a duration of 70 to 95 seconds.
One local tectonic earthquake with an amplitude of 3.7 mm and a duration of 30.8 seconds.
Two distant tectonic earthquakes with an amplitude of 4.4 to 14.8 mm and a duration of 55 to 158 seconds.
One flood earthquake with an amplitude of 3.7 mm and a duration of 261 seconds.
Source et photo : PVMBG.
Costa Rica , Rincon de la Vieja :
Latitude: 10.83°N;
Longitude: 85.34°W;
Altitude: 1,916 m
Current Activity Level: Warning.
No eruptions or exhalations were recorded this week. The background tremor varied in amplitude and frequency this week. A very intense pulse, with a harmonic component, began on October 5 between 2:00 AM and 4:00 PM, then diminished without disappearing. Long-period « tornillo » earthquakes continue to occur, in addition to sporadic high-frequency earthquakes.
Geodetic observations show a contraction of the base and a displacement of the summit towards the crater. This week, DOAS stations recorded a SO2 flux of 71 ± 29 t/d, a value similar to that of the previous week (63 ± 33 t/d). The MultiGAS station measured low SO₂ concentrations (< 1 ppm) and H₂S/SO₂ ratios of approximately 0.7 this week. The last detection of atmospheric SO₂ by satellite was on September 7.
Source : Ovsicori.
Photo : Federico Chavarría-Kopper – Ovsicori.
Hawaii , Kilauea :
HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE , U.S. Geological Survey
Monday, October 13, 2025, 9:02 AM HST (Monday, October 13, 2025, 19:02 UTC)
19°25’16 » N 155°17’13 » W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
During the lapse in appropriations, the USGS Hawaiian Volcano Observatory (HVO) continues to maintain monitoring networks and issue updates and notifications of volcanic activity via the Hazard Notification Service. Volcano monitoring data will continue to be available on the HVO website. Static website content will not be updated until further notice and information may become outdated over time
Activity Summary:
Episode 34 lava fountaining ended October 1 at 7:03 a.m. HST after approximately 6 hours of continuous activity. Variable incandescence and occasional brief spattering was visible in both the north and south vents last night, indicating that magma within the conduits is close to the surface. Seismic tremor indicates that gas piston events continue within the vents, but are more irregular compared to the past several days. Kīlauea’s summit region continued to inflate over the past 24 hours, with rates indicating that the next fountaining episode is likely to start between October 17 and 21.
Summit Observations:
Halema’uma’u continues to be quiet this morning with passive outgassing plumes rising from the north and south vents. Variable moderate to bright incandescence visible in the north vent last night was significantly more prominent than the less frequent incandescence visible in the south vent. Brief spatter bursts were observed from the south vent at 9:09 and 9:32 p.m. HST and the north vent at 9:29 p.m. HST. The south vent dimmed significantly before midnight and remained that way until daylight. The variable nature of the glow roughly correlates with irregular seismic tremor, but the patterns are less pronounced. This indicates that gas piston activity continues within both vents but at less regular intervals compared to the the early part of the repose period. The UWD tiltmeter shows continued inflationary tilt and as of this morning, the tiltmeter has recovered a total of approximately 18.8 microradians since episode 34 ended.
Source et photo : HVO
