Volcano Alerts and Activity Reports
Provided by usgs.gov| Recent Volcano Observatory Activity Reports |
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Recent Volcano Updates from the U.S. Geological Survey Volcano Hazards Program |
| June 15th, 2026 14:22:05 EDT -0400 HVO Kilauea YELLOW/ADVISORY - Episode 49 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea ended abruptly at 5:05 p.m. HST on June 14. The eruption is currently paused. Jun 15, 2026 04:15 - Activity Summary: Episode 49 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea ended abruptly at 5:05 p.m. HST on June 14, 2026, after 7.5 hours of continuous lava fountaining from the north vent. The eruption is currently paused.Tephra fall was restricted to the closed are of Hawaiʻi Volcanoes National Park to the southwest of the active Halemaʻumaʻu vents. No significant tephra or ash fall was reported from open overlooks in Hawaiʻi Volcanoes National Park or in the surrounding communities at this time. Episode 49 Chronology:Lava fountaining episode ... |
| June 15th, 2026 14:22:05 EDT -0400 AVO Great Sitkin ORANGE/WATCH - Slow eruption of lava within the summit crater continues. Jun 14, 2026 18:45 - Slow eruption of lava continues. Minor seismicity was detected over the past day. Weakly elevated surface temperatures were observed in satellite data. A clear web camera view of the summit showed no significant changes in the current activity. The current eruption began in July 2021 and, since then, lava flows have 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, webcams, and regional ... |
| June 15th, 2026 14:22:05 EDT -0400 AVO Kupreanof YELLOW/ADVISORY - Occasional earthquake activity continues. Jun 14, 2026 18:45 - Occasional earthquakes continued over the past day. No activity was observed in mostly cloudy satellite views of the volcano but sulfur dioxide gas emissions were detected in satellite data. There is no real-time geophysical monitoring network at Mount Kupreanof. The closest functioning seismometers are approximately 17 miles (27 km) to the east of the volcano as part of the Mount Veniaminof network. Mount Kupreanof is also monitored by satellite data, remote infrasound and lightning networks, and visual observations from pilots and mariners passing by the volcano. |
| June 15th, 2026 14:22:05 EDT -0400 AVO Shishaldin YELLOW/ADVISORY - Ongoing volcanic unrest is indicated by seismic activity and infrasound events. Jun 14, 2026 18:45 - Unrest continues. Minor seismic activity and infrasound were detected at the volcano. Cloudy weather obscured the volcano in satellite and web camera views from the past day. Sulfur dioxide gas emissions were observed in satellite data. 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 lightning data, and satellite images to detect eruptions. |
| June 15th, 2026 14:22:05 EDT -0400 CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels. Jun 12, 2026 19:22 - 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: During the past week, small earthquakes were detected at Mount Rainier, Mount St. Helens, and Mount Hood. All monitoring data are consistent with background activity levels in the Cascade Range. |
| June 15th, 2026 14:22:05 EDT -0400 CALVO GREEN/NORMAL - CA volcanoes were at normal background levels of seismicity and deformation during the past week. Jun 11, 2026 16:49 - 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 June 01 (0000h PDT) to June 07 (2359h PDT):Typical seismicity was recorded at The Geysers geothermal field south of the Clear Lake ... |
| June 15th, 2026 14:22:05 EDT -0400 HVO Ofu-Olosega GREEN/NORMAL - No activity of concern for Ofu-Olosega. Jun 4, 2026 19:56 - 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. |
| June 15th, 2026 14:22:05 EDT -0400 HVO Ta'u Island GREEN/NORMAL - No activity of concern for Taʻū Island Jun 4, 2026 19:56 - 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.The FAGA broadband seismometer located on eastern Taʻū Island is currently out of service. The TAU broadband seismometer on western Taʻū Island remains operational. |
| June 15th, 2026 14:22:05 EDT -0400 HVO Tutuila Island GREEN/NORMAL - No activity of concern for Tutuila Island Jun 4, 2026 19:56 - 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. |
| June 15th, 2026 14:22:05 EDT -0400 HVO Mauna Loa GREEN/NORMAL - Mauna Loa earthquake counts slightly increased in May, and inflationary ground deformation continued. Jun 4, 2026 19:27 - Mauna Loa had a slight increase in seismic activity compared to the previous month, with clustering of events under Mokuʻāweoweo and the upper Southwest Rift Zone still present. A total of 170 earthquakes were detected beneath Mauna Loa's summit region in the May reporting period, while April had 132 earthquakes. A magnitude-6 earthquake on May 22 was located deep beneath the west flank of Mauna Loa and beneath the Island of Hawaiʻi; it was not related to volcanic processes or magma movement, but rather due to bending of the Pacific Plate from the weight of the Hawaiian ... |
| June 15th, 2026 14:22:05 EDT -0400 HVO Hualalai GREEN/NORMAL - No activity of concern for Hualālai. Jun 4, 2026 19:27 - 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. A magnitude-4.6 earthquake on June 3 was located deep beneath the northwest flank of Hualālai and beneath the Island of Hawaiʻi; it was not related to volcanic processes or magma movement, but rather due to bending of the Pacific Plate from the weight of the Hawaiian Islands. The continuously recording Global Positioning System (GPS) instrument on Hualālai remains offline since March 15, 2026. ... |
| June 15th, 2026 14:22:05 EDT -0400 HVO Haleakala GREEN/NORMAL - No activity of concern for Haleakalā. Jun 4, 2026 19:27 - 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. |
| June 15th, 2026 14:22:05 EDT -0400 HVO Mauna Kea GREEN/NORMAL - No activity of concern for Mauna Kea. Jun 4, 2026 19:27 - Mauna Kea seismic activity has decreased and returned to long-term rates following a swarm in March, attributed to the underlying and inactive Kohala volcano. Continuous GPS instruments on Mauna Kea volcano did not record significant changes in ground deformation trends through April 2026. |
| June 15th, 2026 14:22:05 EDT -0400 HVO Kama'ehuakanaloa UNASSIGNED/UNASSIGNED - No activity of concern for Kamaʻehuakanaloa. Jun 4, 2026 19:27 - 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. |
| June 15th, 2026 14:22:05 EDT -0400 YVO Yellowstone GREEN/NORMAL - YVO Monthly Update: background seismicity and deformation Jun 1, 2026 16:55 - SummaryYellowstone Caldera activity remains at background levels, with 45 located earthquakes in May (largest = M2.0). Deformation measurements indicate no significant uplift or subsidence of the caldera or north caldera rim since January 2026. Recent Work and NewsEchinus Geyser, in Norris Geyser Basin, remained active, with 2 eruptions in May. The month also included eruptions of Black Diamond Pool in Biscuit Basin (site of a hydrothermal explosion in 2024) that were recorded by acoustic, seismic, and temperature measurements on May 5 and 11. The biennial coordination ... |
| Volcano Alert Levels |
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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. |
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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. |
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WATCH Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway but poses limited hazards. |
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WARNING Hazardous eruption is imminent, underway, or suspected. |
| UNASSIGNED |
| Aviation Alert Color Codes ICAO |
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| 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]. |







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