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Porth, Newquay, Cornwall. UK
Updated:  19/01/2026 11:00 
 


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18 Jan 2026 23:00
 
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Volcano Alerts and Activity Reports

Provided by usgs.gov Recent Volcano Observatory Activity Reports
Recent Volcano Observatory Activity Reports

Recent Volcano Updates from the U.S. Geological Survey Volcano Hazards Program

January 19th, 2026 06:10:15 EST -0500 AVO Great Sitkin ORANGE/WATCH - Slow eruption of lava within the summit crater continues.
Jan 18, 2026 19:44 - Lava continues to erupt slowly within the summit crater of Great Sitkin Volcano. High resolution satellite images on January 17 showed steam coming off the active lava dome. No significant earthquake activity was detected. The current lava eruption began in July 2021 and since then has filled most of the summit crater and advanced into valleys below. There have been no explosions at Great Sitkin Volcano since an event in May 2021. The volcano is monitored using local seismic and infrasound sensors, satellite data and webcams, and regional infrasound and lightning networks.
January 19th, 2026 06:10:15 EST -0500 AVO Pavlof YELLOW/ADVISORY - No significant activity detected over the last day.
Jan 18, 2026 19:44 - No significant earthquake activity was detected over the last day. No surface activity seen in clear satellite and webcam images. Pavlof Volcano is monitored by local seismic and infrasound sensors, satellite data, web cameras, and regional infrasound and lightning networks.
January 19th, 2026 06:10:15 EST -0500 AVO Shishaldin YELLOW/ADVISORY - Low-level unrest continues.
Jan 18, 2026 19:44 - Shishaldin Volcano continues to experience unrest with numerous small earthquakes detected over the past day. Clouds obscured webcam and satellite images. Local seismic and infrasound sensors, web cameras, and a geodetic network are used to monitor Shishaldin Volcano. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.
January 19th, 2026 06:10:15 EST -0500 HVO Kilauea ORANGE/WATCH - Kīlauea is not erupting. The forecast for the onset of episode 41 is January 21-25.
Jan 18, 2026 18:59 - Activity Summary:The eruption of Halemaʻumaʻu at the summit of Kīlauea is paused. The current forecast for the onset of the next lava fountaining episode is currently between January 21 to 25, 2026 based on current inflation models. Earthquake swarm activity appears to be dropping at the summit, with only two weak clusters of 5 earthquakes. No significant activity has been noted along Kīlauea’s East Rift Zone or Southwest Rift Zone.Significant changes in activity between updates are posted here: HVO - Observatory Messages | U.S. Geological Survey.Summit ...
January 19th, 2026 06:10:15 EST -0500 CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels.
Jan 16, 2026 17:48 - Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal background activity levels. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington State and Mount Hood, Mount Jefferson, Three Sisters, Newberry, and Crater Lake in Oregon.Past Week Observations: Over the past week, small earthquakes were located at Mount Hood and Mount St. Helens. Monitoring data are consistent with background activity levels in the Cascade Range. Field crews were at Mount St. Helens this week to do site ...
January 19th, 2026 06:10:15 EST -0500 AVO Aniakchak UNASSIGNED/UNASSIGNED - Resuspended ash observed from Aniakchak. Aviation color code and alert level remain at UNASSIGNED.
Jan 16, 2026 02:47 - Strong surface winds blowing to the northwest in the region northwest of Aniakchak and east of Port Heiden have picked up loose volcanic ash and carried it to the northwest today. A cloud of resuspended volcanic ash is visible in satellite data. The National Weather Service has issued a SIGMET for this low-level event and suggests that the maximum cloud height is 6,000 ft (1.8 km) above sea level.This phenomenon is not the result of volcanic activity and usually occurs seasonally in the spring and fall during times of high winds and dry, snow-free conditions in volcanic ...
January 19th, 2026 06:10:15 EST -0500 NMI Ahyi Seamount YELLOW/ADVISORY - No significant activity detected at Ahyi seamount over the past week. A weak submarine plume, likely associated with degassing was observed.
Jan 15, 2026 22:20 - No signs of significant unrest were detected at the Northern Mariana Island volcanoes during the past week. A weak submarine plume, likely associated with degassing and hydrothermal activity, was observed in high-resolution satellite image of Ahyi Seamount on January 9, 2026.There are no local monitoring stations near Ahyi seamount, which limits our ability to detect and characterize volcanic unrest there. We will continue to monitor satellite and distal hydroacoustic data for additional evidence for, or escalation of, volcanic activity.
January 19th, 2026 06:10:15 EST -0500 CALVO GREEN/NORMAL - CA volcanoes were at normal background levels of seismicity and deformation during the past week.
Jan 13, 2026 18:49 - Monitored CALIFORNIA VOLCANOESCurrent Volcano Alert Level: all NORMALCurrent Aviation Color Code: all GREENActivity Update: All volcanoes monitored by CalVO show normal background earthquake activity and deformation. Monitored volcanoes include Mount Shasta, Medicine Lake Volcano, Lassen Volcanic Center, Clear Lake Volcanic Field, Long Valley Volcanic Region, Coso Volcanic Field, Ubehebe Craters, and Salton Buttes. Past Week Observations for January 05 (0000h PST) to January 11 (2359h PST):One earthquake greater than M1 was recorded within the Clear Lake Volcanic Field, ...
January 19th, 2026 06:10:15 EST -0500 HVO Ofu-Olosega GREEN/NORMAL - No activity of concern for Ofu-Olosega.
Jan 3, 2026 02:44 - No significant activity was detected at Ofu-Olosega volcano during the past month. The USGS National Earthquake Information Center reported no earthquakes of magnitude 2.5 or greater in the vicinity of the volcano.
January 19th, 2026 06:10:15 EST -0500 HVO Ta'u Island GREEN/NORMAL - No activity of concern for Taʻū Island
Jan 3, 2026 02:44 - No significant activity was detected at Taʻū volcano during the past month. The USGS National Earthquake Information Center reported no earthquakes of magnitude 2.5 or greater in the vicinity of the volcano. A Global Positioning System (GPS) instrument on Taʻū Island recorded no significant deformation.
January 19th, 2026 06:10:15 EST -0500 HVO Tutuila Island GREEN/NORMAL - No activity of concern for Tutuila Island
Jan 3, 2026 02:44 - No significant activity was detected at Tutuila volcano during the past month. The USGS National Earthquake Information Center reported no earthquakes of magnitude 2.5 or greater in the vicinity of the volcano.
January 19th, 2026 06:10:15 EST -0500 HVO Mauna Loa GREEN/NORMAL - Mauna Loa had low rates throughout December. Inflation of the summit has decreased.
Jan 3, 2026 02:42 - Mauna Loa seismic activity diminished by 40%, mostly from the lull in earthquake production in the beginning of the month. There was a relatively short-lived (< 1 day) activity that elucidated the (pre-2022 eruption) northwest cluster on 2025-12-17. Earthquake production rates increased, later in the month, under the caldera and upper-SWRZ. A total of 94 earthquakes were detected beneath Mauna Loa's summit region in the December reporting period, while the prior month had 147 earthquakes. Data from Global Positioning System (GPS) instruments on Mauna Loa show a lower ...
January 19th, 2026 06:10:15 EST -0500 HVO Kama'ehuakanaloa UNASSIGNED/UNASSIGNED - No activity of concern for Kamaʻehuakanaloa.
Jan 3, 2026 02:42 - No significant activity was detected at Kamaʻehuakanaloa (formerly Lōʻihi Seamount) during the past month. Seismic activity remained low, and was representative of background activity levels at the volcano; all earthquakes were of small magnitudes (below M2+).
January 19th, 2026 06:10:15 EST -0500 HVO Hualalai GREEN/NORMAL - No activity of concern for Hualālai.
Jan 3, 2026 02:42 - No significant activity was detected at Hualālai volcano during the past month. Seismic activity remained low, and was representative of background activity levels at the volcano; all earthquakes were of small magnitudes (
January 19th, 2026 06:10:15 EST -0500 HVO Haleakala GREEN/NORMAL - No activity of concern for Haleakalā.
Jan 3, 2026 02:42 - No significant activity was detected at Haleakalā volcano during the past month. HVO seismometers recorded no earthquakes in the vicinity of the volcano. The continuously recording Global Positioning System (GPS) instrument on Haleakalā recorded no significant deformation in the past month.

 

Volcano Alert Levels
NORMAL
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
ADVISORY
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
WATCH
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway but poses limited hazards.
WARNING
Hazardous eruption is imminent, underway, or suspected.
UNASSIGNED

 

Aviation Alert Color Codes ICAO
GREEN
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
YELLOW
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
ORANGE
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway with no or minor volcanic-ash emissions [ash-plume height specified, if possible].
RED
Eruption is imminent with significant emission of volcanic ash into the atmosphere likely OR eruption is underway or suspected with significant emission of volcanic ash into the atmosphere [ash-plume height specified, if possible].