Hazard Notification System (HANS) for Volcanoes

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Last 24 Hours

Alaska Volcano Observatory

2025-12-03 18:43:30 UTC, Great Sitkin, Shishaldin Daily Update

Hawaiian Volcano Observatory

2025-12-03 19:09:29 UTC, Kilauea Daily Update


Recent Notices

AVO | CalVO | CVO | HVO | NMI | YVO

Alaska Volcano Observatory

2025-12-03 18:43:30 UTC, Great Sitkin, Shishaldin Daily Update

2025-12-02 19:59:14 UTC, Great Sitkin, Shishaldin Daily Update

2025-12-01 23:13:09 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-30 20:04:42 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-29 19:33:23 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-28 20:52:55 UTC, Great Sitkin, Shishaldin Weekly Update

2025-11-27 19:50:52 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-26 19:37:24 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-25 20:06:37 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-24 20:44:22 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-23 19:51:10 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-22 20:15:15 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-21 20:43:48 UTC, Great Sitkin, Shishaldin Weekly Update

2025-11-20 20:13:29 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-19 21:20:11 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-18 21:04:15 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-17 20:36:04 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-16 20:46:12 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-15 19:17:02 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-14 20:50:18 UTC, Great Sitkin, Shishaldin Weekly Update

2025-11-13 20:58:51 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-12 20:56:05 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-11 20:32:21 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-10 21:07:21 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-09 20:04:38 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-08 20:11:03 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-07 20:41:24 UTC, Great Sitkin, Shishaldin Weekly Update

2025-11-06 20:24:31 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-05 22:43:37 UTC, Katmai Information Statement GREEN NORMAL

2025-11-05 20:09:21 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-04 21:20:01 UTC, Great Sitkin, Shishaldin Daily Update

2025-11-04 20:55:49 UTC, Atka volcanic complex Volcano Activity Notification GREEN NORMAL

2025-11-04 20:55:49 UTC, Atka volcanic complex Volcano Observatory Notice for Aviation GREEN NORMAL

2025-11-03 20:56:46 UTC, Great Sitkin, Atka volcanic complex, Shishaldin Daily Update

California Volcano Observatory

2025-12-02 18:35:35 UTC, Weekly Update

2025-11-25 19:12:50 UTC, Weekly Update

2025-11-18 20:53:31 UTC, Weekly Update

2025-11-11 21:34:24 UTC, Weekly Update

2025-11-04 18:39:01 UTC, Weekly Update

Cascades Volcano Observatory

2025-11-28 19:39:09 UTC, Cascade Range Weekly Update

2025-11-21 19:47:08 UTC, Cascade Range Weekly Update

2025-11-14 19:01:41 UTC, Cascade Range Weekly Update

2025-11-07 18:15:06 UTC, Cascade Range Weekly Update

Hawaiian Volcano Observatory

2025-12-03 19:09:29 UTC, Kilauea Daily Update

2025-12-02 19:23:09 UTC, Kilauea Daily Update

2025-12-01 19:48:04 UTC, Kilauea Daily Update

2025-11-30 19:29:16 UTC, Kilauea Daily Update

2025-11-29 19:55:15 UTC, Kilauea Daily Update

2025-11-28 19:14:21 UTC, Kilauea Daily Update

2025-11-27 20:25:03 UTC, Kilauea Daily Update

2025-11-26 20:11:31 UTC, Kilauea Daily Update

2025-11-26 10:45:11 UTC, Information Statement

2025-11-26 10:25:47 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2025-11-26 10:25:47 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2025-11-26 00:59:03 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2025-11-26 00:59:03 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2025-11-25 20:24:42 UTC, Kilauea Daily Update

2025-11-24 22:17:44 UTC, Kilauea Daily Update

2025-11-23 19:33:05 UTC, Kilauea Daily Update

2025-11-22 19:49:20 UTC, Kilauea Daily Update

2025-11-21 19:36:12 UTC, Kilauea Daily Update

2025-11-20 19:24:58 UTC, Kilauea Daily Update

2025-11-19 19:11:38 UTC, Kilauea Daily Update

2025-11-18 18:55:04 UTC, Kilauea Daily Update

2025-11-17 18:28:21 UTC, Kilauea Daily Update

2025-11-16 19:17:03 UTC, Kilauea Daily Update

2025-11-15 19:05:10 UTC, Kilauea Daily Update

2025-11-14 19:43:05 UTC, Kilauea Daily Update

2025-11-13 18:12:23 UTC, Kilauea Daily Update

2025-11-12 19:33:10 UTC, Kilauea Daily Update

2025-11-11 18:53:21 UTC, Kilauea Daily Update

2025-11-10 20:28:52 UTC, Kilauea Daily Update

2025-11-10 02:29:24 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2025-11-10 02:29:24 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2025-11-09 21:47:21 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2025-11-09 21:47:21 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2025-11-09 19:02:06 UTC, Kilauea Daily Update

2025-11-08 19:03:55 UTC, Kilauea Daily Update

2025-11-07 18:41:36 UTC, Kilauea Daily Update

2025-11-06 19:29:43 UTC, Ofu-Olosega, Ta'u Island, Tutuila Island Monthly Update

2025-11-06 19:25:28 UTC, Kilauea Daily Update

2025-11-06 19:21:20 UTC, Mauna Loa, Hualalai, Haleakala, Mauna Kea, Kama'ehuakanaloa Monthly Update

2025-11-05 18:51:03 UTC, Kilauea Daily Update

2025-11-04 19:32:12 UTC, Kilauea Daily Update

2025-11-03 18:37:10 UTC, Kilauea Daily Update

Northern Mariana Islands

2025-11-27 19:58:44 UTC, Ahyi Seamount Weekly Update

2025-11-21 01:08:46 UTC, Ahyi Seamount Weekly Update

2025-11-14 00:05:59 UTC, Ahyi Seamount Weekly Update

2025-11-07 00:15:20 UTC, Ahyi Seamount Weekly Update

2025-11-05 20:42:01 UTC, Ahyi Seamount Volcano Activity Notification YELLOW ADVISORY

2025-11-05 20:42:01 UTC, Ahyi Seamount Volcano Observatory Notice for Aviation YELLOW ADVISORY

Yellowstone Volcano Observatory

2025-12-01 20:30:40 UTC, Yellowstone Monthly Update

2025-11-03 21:13:01 UTC, Yellowstone Monthly Update

Elevated Volcanoes

Alaska Volcano Observatory

Great Sitkin 2025-12-03 18:43:30 UTC ORANGE WATCH
Shishaldin 2025-12-03 18:43:30 UTC YELLOW ADVISORY

Hawaiian Volcano Observatory

Kilauea 2025-12-03 19:09:29 UTC ORANGE WATCH

Northern Mariana Islands

Ahyi Seamount 2025-11-27 19:58:44 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 2024-07-08 20:52:29 UTC GREEN NORMAL
Atka volcanic complex 2025-11-04 20:55:49 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 2024-05-13 23:43:30 UTC GREEN NORMAL
Gareloi 2024-03-05 20:50:34 UTC GREEN NORMAL
Great Sitkin 2025-12-03 18:43:30 UTC ORANGE WATCH
Griggs 2022-03-18 23:33:23 UTC GREEN NORMAL
Iliamna 2025-07-04 17:37:25 UTC GREEN NORMAL
Isanotski UTC GREEN NORMAL
Kanaga 2024-02-27 20:55:59 UTC GREEN NORMAL
Katmai 2025-11-05 22:43:37 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 2020-09-08 21:52:54 UTC GREEN NORMAL
Martin 2023-01-11 23:08:56 UTC GREEN NORMAL
Novarupta 2022-03-18 23:33:23 UTC GREEN NORMAL
Okmok 2025-09-10 20:23:50 UTC GREEN NORMAL
Pavlof 2023-01-20 20:29:55 UTC GREEN NORMAL
Redoubt 2010-04-23 20:27:31 UTC GREEN NORMAL
Semisopochnoi 2023-08-04 22:57:33 UTC GREEN NORMAL
Shishaldin 2025-12-03 18:43:30 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 2024-05-13 23:43:30 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 2025-11-28 19:39:09 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 2025-09-16 17:42:02 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 2025-11-06 19:21:20 UTC GREEN NORMAL
Hualalai 2025-11-06 19:21:20 UTC GREEN NORMAL
Kilauea 2025-12-03 19:09:29 UTC ORANGE WATCH
Mauna Kea 2025-11-06 19:21:20 UTC GREEN NORMAL
Mauna Loa 2025-11-06 19:21:20 UTC GREEN NORMAL
Ofu-Olosega 2025-11-06 19:29:43 UTC GREEN NORMAL
Ta'u Island 2025-11-06 19:29:43 UTC GREEN NORMAL
Tutuila Island 2025-11-06 19:29:43 UTC GREEN NORMAL

Northern Mariana Islands

Ahyi Seamount 2025-11-27 19:58:44 UTC YELLOW ADVISORY

Yellowstone Volcano Observatory

Yellowstone 2025-12-01 20:30:40 UTC GREEN NORMAL