Hazard Notification System (HANS) for Volcanoes

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Last 24 Hours

Alaska Volcano Observatory

2026-10-29 19:39:34 UTC, Great Sitkin, Shishaldin Daily Update

Hawaiian Volcano Observatory

2026-10-29 19:05:24 UTC, Kilauea Daily Update

Northern Mariana Islands

2026-10-29 23:23:07 UTC, Ahyi Seamount Weekly Update


Recent Notices

AVO | CalVO | CVO | HVO | NMI | YVO

Alaska Volcano Observatory

2026-10-29 19:39:34 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-28 19:00:27 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-27 18:45:38 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-26 18:52:55 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-25 20:24:17 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-24 18:28:00 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-23 19:28:22 UTC, Great Sitkin, Shishaldin Weekly Update

2026-10-22 19:49:57 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-21 19:27:38 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-20 19:48:31 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-19 20:01:42 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-18 18:52:41 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-17 19:05:57 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-16 19:14:32 UTC, Great Sitkin, Shishaldin Weekly Update

2026-10-15 19:51:31 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-14 20:03:31 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-13 20:31:20 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-12 19:02:18 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-11 20:18:18 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-10 21:41:55 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-09 20:34:00 UTC, Great Sitkin, Shishaldin Weekly Update

2026-10-08 21:49:11 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-07 19:53:36 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-06 20:52:28 UTC, Great Sitkin, Shishaldin Daily Update

2026-10-06 18:37:45 UTC, Gareloi Volcano Observatory Notice for Aviation GREEN NORMAL

2026-10-06 18:37:45 UTC, Gareloi Volcano Activity Notification GREEN NORMAL

2026-10-05 21:19:27 UTC, Great Sitkin, Shishaldin, Gareloi Daily Update

2026-10-04 19:18:09 UTC, Great Sitkin, Shishaldin, Gareloi Daily Update

2026-10-03 21:42:47 UTC, Great Sitkin, Shishaldin, Gareloi Daily Update

2026-10-02 20:07:22 UTC, Great Sitkin, Shishaldin, Gareloi Weekly Update

2026-10-01 20:35:44 UTC, Great Sitkin, Shishaldin, Gareloi Daily Update

2026-10-01 16:42:52 UTC, Gareloi Volcano Activity Notification YELLOW ADVISORY

2026-10-01 16:42:52 UTC, Gareloi Volcano Observatory Notice for Aviation YELLOW ADVISORY

2026-09-30 19:47:37 UTC, Great Sitkin, Shishaldin Daily Update

2026-09-29 19:52:26 UTC, Great Sitkin, Shishaldin Daily Update

California Volcano Observatory

2026-10-27 20:39:43 UTC, Weekly Update

2026-10-20 16:43:29 UTC, Weekly Update

2026-10-13 16:38:33 UTC, Weekly Update

2026-10-06 16:52:45 UTC, Weekly Update

2026-09-29 18:09:18 UTC, Weekly Update

Cascades Volcano Observatory

2026-10-23 18:11:41 UTC, Cascade Range Weekly Update

2026-10-16 18:32:45 UTC, Cascade Range Weekly Update

2026-10-15 20:01:03 UTC, Mount St. Helens Volcano Observatory Notice for Aviation GREEN NORMAL

2026-10-15 20:01:03 UTC, Mount St. Helens Volcano Activity Notification GREEN NORMAL

2026-10-09 17:09:28 UTC, Cascade Range Weekly Update

2026-10-09 16:28:25 UTC, Cascade Range Weekly Update

2026-10-02 18:58:41 UTC, Cascade Range Weekly Update

Hawaiian Volcano Observatory

2026-10-29 19:05:24 UTC, Kilauea Daily Update

2026-10-28 19:04:04 UTC, Kilauea Daily Update

2026-10-27 18:10:51 UTC, Kilauea Daily Update

2026-10-26 18:10:12 UTC, Kilauea Daily Update

2026-10-25 18:37:11 UTC, Kilauea Daily Update

2026-10-24 18:37:53 UTC, Kilauea Daily Update

2026-10-23 19:37:45 UTC, Kilauea Daily Update

2026-10-22 20:00:21 UTC, Kilauea Daily Update

2026-10-21 19:25:43 UTC, Kilauea Daily Update

2026-10-20 20:11:47 UTC, Kilauea Daily Update

2026-10-19 19:46:23 UTC, Kilauea Daily Update

2026-10-18 20:30:01 UTC, Kilauea Daily Update

2026-10-17 19:59:31 UTC, Kilauea Volcano Observatory Notice for Aviation YELLOW ADVISORY

2026-10-17 19:59:31 UTC, Kilauea Volcano Activity Notification YELLOW ADVISORY

2026-10-17 19:50:10 UTC, Kilauea Daily Update

2026-10-17 19:11:46 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2026-10-17 19:11:46 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2026-10-17 15:22:54 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2026-10-17 15:22:54 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2026-10-17 13:43:56 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2026-10-17 13:43:56 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2026-10-16 19:54:02 UTC, Kilauea Daily Update

2026-10-15 20:10:46 UTC, Kilauea Daily Update

2026-10-15 02:18:23 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2026-10-15 02:18:23 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2026-10-14 20:06:00 UTC, Kilauea Daily Update

2026-10-13 20:06:24 UTC, Kilauea Daily Update

2026-10-12 19:50:45 UTC, Kilauea Daily Update

2026-10-11 19:42:34 UTC, Kilauea Daily Update

2026-10-10 18:45:07 UTC, Kilauea Daily Update

2026-10-09 18:53:00 UTC, Kilauea Daily Update

2026-10-08 18:25:33 UTC, Kilauea Daily Update

2026-10-08 01:13:22 UTC, Kilauea Status Report ORANGE WATCH

2026-10-07 19:03:29 UTC, Kilauea Daily Update

2026-10-06 19:20:04 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2026-10-06 19:20:04 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2026-10-06 18:55:02 UTC, Kilauea Daily Update

2026-10-05 19:00:08 UTC, Kilauea Daily Update

2026-10-04 18:30:03 UTC, Kilauea Daily Update

2026-10-03 18:50:21 UTC, Kilauea Daily Update

2026-10-02 19:45:09 UTC, Kilauea Daily Update

2026-10-01 22:00:03 UTC, Ofu-Olosega, Ta'u Island, Tutuila Island Monthly Update

2026-10-01 21:30:20 UTC, Mauna Loa, Hualalai, Haleakala, Mauna Kea, Kama'ehuakanaloa Monthly Update

2026-10-01 19:05:15 UTC, Kilauea Daily Update

2026-10-01 09:01:09 UTC, Kilauea Status Report ORANGE WATCH

2026-09-30 19:25:36 UTC, Kilauea Daily Update

2026-09-29 19:02:11 UTC, Kilauea Daily Update

2026-09-29 17:54:03 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2026-09-29 17:54:03 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

Northern Mariana Islands

2026-10-29 23:23:07 UTC, Ahyi Seamount Weekly Update

2026-10-22 23:16:38 UTC, Ahyi Seamount Weekly Update

2026-10-15 23:34:00 UTC, Ahyi Seamount Weekly Update

2026-10-08 23:31:51 UTC, Ahyi Seamount Weekly Update

2026-10-01 20:39:46 UTC, Ahyi Seamount Weekly Update

Yellowstone Volcano Observatory

2026-10-01 15:10:08 UTC, Yellowstone Monthly Update

Elevated Volcanoes

Alaska Volcano Observatory

Great Sitkin 2026-10-29 19:39:34 UTC ORANGE WATCH
Shishaldin 2026-10-29 19:39:34 UTC YELLOW ADVISORY

Hawaiian Volcano Observatory

Kilauea 2026-10-29 19:05:24 UTC YELLOW ADVISORY

Northern Mariana Islands

Ahyi Seamount 2026-10-29 23:23:07 UTC YELLOW ADVISORY


Common Alerting Protocol RSS Feed

Monitored Volcanoes

Alaska Volcano Observatory

Akutan 2019-09-06 18:29:39 UTC GREEN NORMAL
Alaskan Volcanoes 2010-08-20 20:39:48 UTC GREEN NORMAL
Aniakchak 2026-05-05 22:31:29 UTC GREEN NORMAL
Atka volcanic complex 2026-07-21 20:08:42 UTC GREEN NORMAL
Augustine 2019-09-06 18:29:39 UTC GREEN NORMAL
Cleveland 2024-07-08 21:06:48 UTC GREEN NORMAL
Dutton 2019-09-06 18:29:39 UTC GREEN NORMAL
Edgecumbe 2024-02-09 19:57:42 UTC GREEN NORMAL
Fisher 2026-03-09 19:18:33 UTC GREEN NORMAL
Gareloi 2026-10-06 18:37:45 UTC GREEN NORMAL
Great Sitkin 2026-10-29 19:39:34 UTC ORANGE WATCH
Griggs 2022-03-18 23:33:23 UTC GREEN NORMAL
Iliamna 2026-08-14 21:05:43 UTC GREEN NORMAL
Isanotski UTC GREEN NORMAL
Kanaga 2024-02-27 20:55:59 UTC GREEN NORMAL
Katmai 2026-09-01 00:04:06 UTC GREEN NORMAL
Korovin 2020-12-04 20:29:15 UTC GREEN NORMAL
Little Sitkin 2022-07-14 22:40:33 UTC GREEN NORMAL
Mageik 2023-01-11 23:08:56 UTC GREEN NORMAL
Makushin 2020-12-16 00:59:56 UTC GREEN NORMAL
Martin 2023-01-11 23:08:56 UTC GREEN NORMAL
Novarupta 2022-03-18 23:33:23 UTC GREEN NORMAL
Okmok 2026-01-30 02:55:41 UTC GREEN NORMAL
Pavlof 2026-01-23 21:37:59 UTC GREEN NORMAL
Redoubt 2010-04-23 20:27:31 UTC GREEN NORMAL
Semisopochnoi 2026-02-27 20:55:44 UTC GREEN NORMAL
Shishaldin 2026-10-29 19:39:34 UTC YELLOW ADVISORY
Snowy Mountain 2022-03-18 23:33:23 UTC GREEN NORMAL
Spurr 2025-08-22 19:07:53 UTC GREEN NORMAL
Takawangha 2024-01-29 23:13:47 UTC GREEN NORMAL
Tanaga 2024-01-29 23:13:47 UTC GREEN NORMAL
Trident 2024-01-10 20:04:36 UTC GREEN NORMAL
Ugashik-Peulik 2022-10-19 23:05:08 UTC GREEN NORMAL
Ukinrek Maars 2022-10-19 23:05:08 UTC GREEN NORMAL
Veniaminof 2021-07-09 21:30:29 UTC GREEN NORMAL
Westdahl 2026-03-09 19:18:33 UTC GREEN NORMAL
Wrangell 2024-10-01 18:04:56 UTC GREEN NORMAL

California Volcano Observatory

Clear Lake Volcanic Field UTC GREEN NORMAL
Coso Volcanic Field 2019-07-11 23:36:44 UTC GREEN NORMAL
Lassen Volcanic Center 2009-11-18 16:05:08 UTC GREEN NORMAL
Long Valley Caldera 2012-01-13 01:46:31 UTC GREEN NORMAL
Mammoth Mountain UTC GREEN NORMAL
Medicine Lake volcano UTC GREEN NORMAL
Mono Lake Volcanic Field UTC GREEN NORMAL
Mono-Inyo Craters UTC GREEN NORMAL
Mount Shasta UTC GREEN NORMAL
Salton Buttes UTC GREEN NORMAL
Ubehebe Craters UTC GREEN NORMAL

Cascades Volcano Observatory

Cascade Range 2026-10-23 18:11:41 UTC GREEN NORMAL
Crater Lake UTC GREEN NORMAL
Glacier Peak UTC GREEN NORMAL
Mount Adams 2024-10-03 19:37:15 UTC GREEN NORMAL
Mount Baker UTC GREEN NORMAL
Mount Hood 2021-06-06 04:38:06 UTC GREEN NORMAL
Mount Jefferson UTC GREEN NORMAL
Mount Rainier 2025-08-25 22:38:40 UTC GREEN NORMAL
Mount St. Helens 2026-10-15 20:01:03 UTC GREEN NORMAL
Newberry 2024-12-18 21:47:10 UTC GREEN NORMAL
Three Sisters 2022-01-31 20:45:17 UTC GREEN NORMAL

Hawaiian Volcano Observatory

Haleakala 2026-10-01 21:30:20 UTC GREEN NORMAL
Hualalai 2026-10-01 21:30:20 UTC GREEN NORMAL
Kilauea 2026-10-29 19:05:24 UTC YELLOW ADVISORY
Mauna Kea 2026-10-01 21:30:20 UTC GREEN NORMAL
Mauna Loa 2026-10-01 21:30:20 UTC GREEN NORMAL
Ofu-Olosega 2026-10-01 22:00:03 UTC GREEN NORMAL
Ta'u Island 2026-10-01 22:00:03 UTC GREEN NORMAL
Tutuila Island 2026-10-01 22:00:03 UTC GREEN NORMAL

Northern Mariana Islands

Ahyi Seamount 2026-10-29 23:23:07 UTC YELLOW ADVISORY

Yellowstone Volcano Observatory

Yellowstone 2026-10-01 15:10:08 UTC GREEN NORMAL