Hazard Notification System (HANS) for Volcanoes
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USGS Volcano Notifications for Aviation
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Volcanic aviation notices published in the last year.
2024-11-19 23:43:33 UTC, Ahyi Seamount YELLOW
NMI Ahyi Seamount YELLOW/ADVISORY - Plume of discolored water and possible floating pumice; Aviation Color Code and Volcano Alert Level raised to YELLOW and ADVISORY..
2024-11-19 23:43:33 UTC, Ahyi Seamount YELLOW
NMI Ahyi Seamount YELLOW/ADVISORY - Plume of discolored water and possible floating pumice; Aviation Color Code and Volcano Alert Level raised to YELLOW and ADVISORY..
2024-10-16 20:07:39 UTC, Spurr YELLOW
AVO Spurr YELLOW/ADVISORY - Volcanic unrest has gradually increased over past several months. Aviation Color Code and Volcano Alert Level raised to YELLOW/ADVISORY.
2024-10-16 20:07:39 UTC, Spurr YELLOW
AVO Spurr YELLOW/ADVISORY - Volcanic unrest has gradually increased over past several months. Aviation Color Code and Volcano Alert Level raised to YELLOW/ADVISORY.
2024-10-01 18:04:56 UTC, Wrangell GREEN
AVO Wrangell GREEN/NORMAL - The seismic network on Mount Wrangell volcano is now functioning.
2024-10-01 18:04:56 UTC, Wrangell GREEN
AVO Wrangell GREEN/NORMAL - The seismic network on Mount Wrangell volcano is now functioning.
2024-09-23 18:12:18 UTC, Kilauea YELLOW
HVO Kilauea YELLOW/ADVISORY - Kīlauea’s middle East Rift Zone eruption has ended, status is being lowered from ORANGE/WATCH to YELLOW/ADVISORY.
2024-09-23 18:12:18 UTC, Kilauea YELLOW
HVO Kilauea YELLOW/ADVISORY - Kīlauea’s middle East Rift Zone eruption has ended, status is being lowered from ORANGE/WATCH to YELLOW/ADVISORY.
2024-09-16 10:23:58 UTC, Kilauea ORANGE
HVO Kilauea ORANGE/WATCH - Kīlauea’s middle East Rift Zone intrusion continues, increasing the potential for an eruption in this area; status is being raised to ORANGE/WATCH.
2024-09-16 10:23:58 UTC, Kilauea ORANGE
HVO Kilauea ORANGE/WATCH - Kīlauea’s middle East Rift Zone intrusion continues, increasing the potential for an eruption in this area; status is being raised to ORANGE/WATCH.
2024-08-30 17:00:05 UTC, Shishaldin GREEN
AVO Shishaldin GREEN/NORMAL - Aviation Color Code and Volcano Alert Level decreased to GREEN/NORMAL
2024-08-30 17:00:05 UTC, Shishaldin GREEN
AVO Shishaldin GREEN/NORMAL - Aviation Color Code and Volcano Alert Level decreased to GREEN/NORMAL
2024-07-23 19:04:45 UTC, Kilauea YELLOW
HVO Kilauea YELLOW/ADVISORY - Kīlauea upper East Rift Zone unrest has decreased in intensity; status is being lowered to YELLOW/ADVISORY.
2024-07-23 19:04:45 UTC, Kilauea YELLOW
HVO Kilauea YELLOW/ADVISORY - Kīlauea upper East Rift Zone unrest has decreased in intensity; status is being lowered to YELLOW/ADVISORY.
2024-07-23 14:06:02 UTC, Kilauea ORANGE
HVO Kilauea ORANGE/WATCH - Kīlauea upper East Rift Zone elevated unrest; status is being raised to ORANGE/WATCH.
2024-07-23 14:06:02 UTC, Kilauea ORANGE
HVO Kilauea ORANGE/WATCH - Kīlauea upper East Rift Zone elevated unrest; status is being raised to ORANGE/WATCH.
2024-07-08 20:54:04 UTC, Cleveland GREEN
AVO Cleveland GREEN/NORMAL - Aviation Color Code/Volcano Alert Level lowered to GREEN/NORMAL.
2024-07-08 20:54:04 UTC, Cleveland GREEN
AVO Cleveland GREEN/NORMAL - Aviation Color Code/Volcano Alert Level lowered to GREEN/NORMAL.
2024-07-08 20:52:29 UTC, Aniakchak GREEN
AVO Aniakchak GREEN/NORMAL - Monitoring stations online again, Aviation Color Code and Volcano Alert Level changed to GREEN/NORMAL.
2024-07-08 20:52:29 UTC, Aniakchak GREEN
AVO Aniakchak GREEN/NORMAL - Monitoring stations online again, Aviation Color Code and Volcano Alert Level changed to GREEN/NORMAL.
2024-07-05 22:54:00 UTC, Cleveland YELLOW
AVO Cleveland YELLOW/ADVISORY - Sulfur dioxide emissions detected. Aviation Color Code/Volcano Alert Level upgraded to YELLOW/ADVISORY.
2024-07-05 22:54:00 UTC, Cleveland YELLOW
AVO Cleveland YELLOW/ADVISORY - Sulfur dioxide emissions detected. Aviation Color Code/Volcano Alert Level upgraded to YELLOW/ADVISORY.
2024-06-05 20:07:19 UTC, Kilauea YELLOW
HVO Kilauea YELLOW/ADVISORY - Eruption southwest of Kīlauea summit in Hawaii Volcanoes National Park has been paused for 48 hours; status is being lowered to YELLOW/ADVISORY.
2024-06-05 20:07:19 UTC, Kilauea YELLOW
HVO Kilauea YELLOW/ADVISORY - Eruption southwest of Kīlauea summit in Hawaii Volcanoes National Park has been paused for 48 hours; status is being lowered to YELLOW/ADVISORY.
2024-06-03 18:27:12 UTC, Kilauea ORANGE
HVO Kilauea ORANGE/WATCH - Kīlauea is erupting southwest of Kīlauea summit in Hawai'i Volcanoes National Park. No threat to human life or property. Status lowered to ORANGE/WATCH.
2024-06-03 18:27:12 UTC, Kilauea ORANGE
HVO Kilauea ORANGE/WATCH - Kīlauea is erupting southwest of Kīlauea summit in Hawai'i Volcanoes National Park. No threat to human life or property. Status lowered to ORANGE/WATCH.
2024-06-03 12:11:12 UTC, Kilauea RED
HVO Kilauea RED/WARNING - Kīlauea is erupting. A new eruption began just south of Kīlauea summit in Hawai'i Volcanoes National Park at 12:30 a.m. HST. Status elevated to RED/WARNING
2024-06-03 12:11:12 UTC, Kilauea RED
HVO Kilauea RED/WARNING - Kīlauea is erupting. A new eruption began just south of Kīlauea summit in Hawai'i Volcanoes National Park at 12:30 a.m. HST. Status elevated to RED/WARNING
2024-06-03 03:31:47 UTC, Kilauea ORANGE
HVO Kilauea ORANGE/WATCH - Kilauea is not erupting. Increased earthquake activity and ground deformation at the summit have increased significantly. Status elevated to ORANGE/WATCH.
2024-06-03 03:31:47 UTC, Kilauea ORANGE
HVO Kilauea ORANGE/WATCH - Kilauea is not erupting. Increased earthquake activity and ground deformation at the summit have increased significantly. Status elevated to ORANGE/WATCH.
2024-04-09 17:46:52 UTC, Ahyi Seamount UNASSIGNED
NMI Ahyi Seamount UNASSIGNED/UNASSIGNED - Signs of activity no longer observed; Aviation Color Code and Volcano Alert Level lowered to UNASSIGNED.
2024-04-09 17:46:52 UTC, Ahyi Seamount UNASSIGNED
NMI Ahyi Seamount UNASSIGNED/UNASSIGNED - Signs of activity no longer observed; Aviation Color Code and Volcano Alert Level lowered to UNASSIGNED.
2024-04-09 15:34:55 UTC, Atka volcanic complex GREEN
AVO Atka volcanic complex GREEN/NORMAL - Activity has returned to background levels; Aviation Color Code and Alert Level have been lowered to GREEN/NORMAL.
2024-04-09 15:34:55 UTC, Atka volcanic complex GREEN
AVO Atka volcanic complex GREEN/NORMAL - Activity has returned to background levels; Aviation Color Code and Alert Level have been lowered to GREEN/NORMAL.
2024-03-28 05:06:18 UTC, Atka volcanic complex YELLOW
AVO Atka volcanic complex YELLOW/ADVISORY - Raised Aviation Color Code and Alert Level to YELLOW/ADVISORY due to small explosion. No ash observed.
2024-03-28 05:06:18 UTC, Atka volcanic complex YELLOW
AVO Atka volcanic complex YELLOW/ADVISORY - Raised Aviation Color Code and Alert Level to YELLOW/ADVISORY due to small explosion. No ash observed.
2024-03-05 20:50:34 UTC, Gareloi GREEN
AVO Gareloi GREEN/NORMAL - Seismic activity decreased. Aviation Color Code and Volcano Alert Level lowered to GREEN/NORMAL
2024-03-05 20:50:34 UTC, Gareloi GREEN
AVO Gareloi GREEN/NORMAL - Seismic activity decreased. Aviation Color Code and Volcano Alert Level lowered to GREEN/NORMAL
2024-02-27 20:10:19 UTC, Kanaga GREEN
AVO Kanaga GREEN/NORMAL - Unrest has subsided and the Aviation Color Code and Volcano Alert Level are being decreased.
2024-02-27 20:10:19 UTC, Kanaga GREEN
AVO Kanaga GREEN/NORMAL - Unrest has subsided and the Aviation Color Code and Volcano Alert Level are being decreased.
2024-02-17 20:26:00 UTC, Shishaldin YELLOW
AVO Shishaldin YELLOW/ADVISORY - Aviation Color Code and Volcano Alert Level decreased to YELLOW/ADVISORY
2024-02-17 20:26:00 UTC, Shishaldin YELLOW
AVO Shishaldin YELLOW/ADVISORY - Aviation Color Code and Volcano Alert Level decreased to YELLOW/ADVISORY
2024-02-12 22:10:54 UTC, Gareloi YELLOW
AVO Gareloi YELLOW/ADVISORY - Increase in seismic activity. Aviation Color Code and Volcano Alert Level raised to YELLOW/ADVISORY
2024-02-12 22:10:54 UTC, Gareloi YELLOW
AVO Gareloi YELLOW/ADVISORY - Increase in seismic activity. Aviation Color Code and Volcano Alert Level raised to YELLOW/ADVISORY
2024-02-11 21:46:19 UTC, Shishaldin ORANGE
AVO Shishaldin ORANGE/WATCH - Aviation Color Code and Volcano Alert Level increased to Orange due to minor ash emissions.
2024-02-11 21:46:19 UTC, Shishaldin ORANGE
AVO Shishaldin ORANGE/WATCH - Aviation Color Code and Volcano Alert Level increased to Orange due to minor ash emissions.
2024-02-03 18:10:55 UTC, Kilauea YELLOW
HVO Kilauea YELLOW/ADVISORY - Kilauea summit is not erupting. Decreased earthquake activity and ground deformation; status lowered to YELLOW/ADVISORY.
2024-02-03 18:10:55 UTC, Kilauea YELLOW
HVO Kilauea YELLOW/ADVISORY - Kilauea summit is not erupting. Decreased earthquake activity and ground deformation; status lowered to YELLOW/ADVISORY.
2024-01-31 14:41:17 UTC, Kilauea ORANGE
HVO Kilauea ORANGE/WATCH - Kīlauea summit is not erupting. Increased earthquake activity and ground deformation; status raised to ORANGE/WATCH.
2024-01-31 14:41:17 UTC, Kilauea ORANGE
HVO Kilauea ORANGE/WATCH - Kīlauea summit is not erupting. Increased earthquake activity and ground deformation; status raised to ORANGE/WATCH.
2024-01-13 22:50:58 UTC, Ahyi Seamount YELLOW
NMI Ahyi Seamount YELLOW/ADVISORY - Plume of discolored water observed near Ahyi seamount in satellite data.
2024-01-13 22:50:58 UTC, Ahyi Seamount YELLOW
NMI Ahyi Seamount YELLOW/ADVISORY - Plume of discolored water observed near Ahyi seamount in satellite data.
2024-01-10 20:04:36 UTC, Trident GREEN
AVO Trident GREEN/NORMAL - Seismicity beneath Trident Volcano has decreased; Aviation Color Code and Volcano Alert Level lowered to GREEN/NORMAL
2024-01-10 20:04:36 UTC, Trident GREEN
AVO Trident GREEN/NORMAL - Seismicity beneath Trident Volcano has decreased; Aviation Color Code and Volcano Alert Level lowered to GREEN/NORMAL
2024-01-02 20:33:13 UTC, Shishaldin YELLOW
AVO Shishaldin YELLOW/ADVISORY - Aviation Color Code and Volcano Alert Level lowered due to decreased activity.
2024-01-02 20:33:13 UTC, Shishaldin YELLOW
AVO Shishaldin YELLOW/ADVISORY - Aviation Color Code and Volcano Alert Level lowered due to decreased activity.
2024-01-01 22:22:18 UTC, Ahyi Seamount UNASSIGNED
NMI Ahyi Seamount UNASSIGNED/UNASSIGNED - Plume of discolored water observed near Ahyi seamount in satellite data.
2024-01-01 22:22:18 UTC, Ahyi Seamount UNASSIGNED
NMI Ahyi Seamount UNASSIGNED/UNASSIGNED - Plume of discolored water observed near Ahyi seamount in satellite data.
Occassionally, aviation notices will not be issued even though a VAN (volcanic activity notice) has been issued. This can happen when there is surface-based activity, but no airborne component.