Hazard Notification System (HANS) for Volcanoes

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Last 24 Hours

Alaska Volcano Observatory

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

Hawaiian Volcano Observatory

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

Yellowstone Volcano Observatory

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


Recent Notices

AVO | CalVO | CVO | HVO | NMI | YVO

Alaska Volcano Observatory

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

2025-11-02 19:27:37 UTC, Great Sitkin, Atka volcanic complex, Shishaldin Daily Update

2025-11-01 19:14:57 UTC, Great Sitkin, Shishaldin, Atka volcanic complex Daily Update

2025-10-31 19:48:03 UTC, Great Sitkin, Atka volcanic complex, Shishaldin Weekly Update

2025-10-30 19:03:31 UTC, Great Sitkin, Atka volcanic complex, Shishaldin Daily Update

2025-10-30 06:22:34 UTC, Atka volcanic complex Volcano Observatory Notice for Aviation YELLOW ADVISORY

2025-10-30 06:22:34 UTC, Atka volcanic complex Volcano Activity Notification YELLOW ADVISORY

2025-10-29 18:58:46 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-28 19:03:01 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-27 20:09:25 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-26 18:45:08 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-25 19:00:52 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-24 19:50:59 UTC, Great Sitkin, Shishaldin Weekly Update

2025-10-23 18:17:50 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-22 18:31:39 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-21 18:45:36 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-20 19:26:21 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-19 19:58:47 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-18 19:24:00 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-17 20:19:14 UTC, Great Sitkin, Shishaldin Weekly Update

2025-10-16 19:33:25 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-15 19:07:16 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-14 19:46:30 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-13 20:11:53 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-12 19:38:03 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-11 19:22:29 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-10 20:04:10 UTC, Great Sitkin, Shishaldin Weekly Update

2025-10-09 19:24:49 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-08 19:33:57 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-07 19:18:22 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-06 17:49:54 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-05 19:07:01 UTC, Great Sitkin, Shishaldin Daily Update

2025-10-04 18:10:40 UTC, Great Sitkin, Shishaldin Daily Update

California Volcano Observatory

2025-10-28 17:17:15 UTC, Weekly Update

2025-10-21 17:40:52 UTC, Weekly Update

2025-10-14 16:42:17 UTC, Weekly Update

2025-10-07 16:47:21 UTC, Weekly Update

Cascades Volcano Observatory

2025-10-31 16:47:27 UTC, Cascade Range Weekly Update

2025-10-24 16:46:56 UTC, Cascade Range Weekly Update

2025-10-17 16:02:11 UTC, Cascade Range Weekly Update

2025-10-10 16:37:36 UTC, Cascade Range Weekly Update

Hawaiian Volcano Observatory

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

2025-11-02 19:01:14 UTC, Kilauea Daily Update

2025-11-01 18:44:19 UTC, Kilauea Daily Update

2025-10-31 18:18:12 UTC, Kilauea Daily Update

2025-10-30 19:01:56 UTC, Kilauea Daily Update

2025-10-29 18:44:53 UTC, Kilauea Daily Update

2025-10-28 18:20:10 UTC, Kilauea Daily Update

2025-10-27 18:26:12 UTC, Kilauea Daily Update

2025-10-26 19:06:56 UTC, Kilauea Daily Update

2025-10-25 19:04:36 UTC, Kilauea Daily Update

2025-10-24 18:50:56 UTC, Kilauea Daily Update

2025-10-23 19:05:29 UTC, Kilauea Daily Update

2025-10-22 18:28:04 UTC, Kilauea Daily Update

2025-10-21 19:05:13 UTC, Kilauea Daily Update

2025-10-20 19:44:29 UTC, Kilauea Daily Update

2025-10-19 19:47:31 UTC, Kilauea Daily Update

2025-10-19 19:13:45 UTC, Information Statement

2025-10-18 20:34:15 UTC, Kilauea Daily Update

2025-10-18 20:25:12 UTC, Kilauea Daily Update

2025-10-18 14:30:33 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2025-10-18 14:30:33 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2025-10-18 08:05:46 UTC, Kilauea Status Report ORANGE WATCH

2025-10-18 06:35:52 UTC, Kilauea Volcano Activity Notification ORANGE WATCH

2025-10-18 06:35:52 UTC, Kilauea Volcano Observatory Notice for Aviation ORANGE WATCH

2025-10-17 19:34:01 UTC, Kilauea Daily Update

2025-10-16 23:14:36 UTC, Kilauea Status Report ORANGE WATCH

2025-10-16 19:12:34 UTC, Kilauea Daily Update

2025-10-15 18:36:11 UTC, Kilauea Daily Update

2025-10-14 18:29:23 UTC, Kilauea Daily Update

2025-10-13 19:02:50 UTC, Kilauea Daily Update

2025-10-12 18:38:17 UTC, Kilauea Daily Update

2025-10-11 18:30:21 UTC, Kilauea Daily Update

2025-10-10 18:05:57 UTC, Kilauea Daily Update

2025-10-09 18:04:34 UTC, Kilauea Daily Update

2025-10-08 18:16:00 UTC, Kilauea Daily Update

2025-10-07 17:50:09 UTC, Kilauea Daily Update

2025-10-06 18:41:28 UTC, Kilauea Daily Update

2025-10-05 17:37:18 UTC, Kilauea Daily Update

2025-10-04 18:27:22 UTC, Kilauea Daily Update

Northern Mariana Islands

2025-10-30 23:44:19 UTC, Weekly Update

2025-10-23 18:39:27 UTC, Ahyi Seamount Weekly Update

2025-10-16 23:12:00 UTC, Weekly Update

2025-10-09 19:49:18 UTC, Ahyi Seamount Weekly Update

Yellowstone Volcano Observatory

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

Elevated Volcanoes

Alaska Volcano Observatory

Atka volcanic complex 2025-11-03 20:56:46 UTC YELLOW ADVISORY
Great Sitkin 2025-11-03 20:56:46 UTC ORANGE WATCH
Shishaldin 2025-11-03 20:56:46 UTC YELLOW ADVISORY

Hawaiian Volcano Observatory

Kilauea 2025-11-03 18:37:10 UTC ORANGE WATCH


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 2025-11-03 20:56:46 UTC YELLOW ADVISORY
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 2025-11-03 20:56:46 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 2025-09-27 15:23:41 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 2025-11-03 20:56:46 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 2025-10-31 16:47:27 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 2025-10-02 18:14:01 UTC GREEN NORMAL
Hualalai 2025-10-02 18:14:01 UTC GREEN NORMAL
Kilauea 2025-11-03 18:37:10 UTC ORANGE WATCH
Mauna Kea 2025-10-02 18:14:01 UTC GREEN NORMAL
Mauna Loa 2025-10-02 18:14:01 UTC GREEN NORMAL
Ofu-Olosega 2025-10-02 18:17:49 UTC GREEN NORMAL
Ta'u Island 2025-10-02 18:17:49 UTC GREEN NORMAL
Tutuila Island 2025-10-02 18:17:49 UTC GREEN NORMAL

Yellowstone Volcano Observatory

Yellowstone 2025-11-03 21:13:01 UTC GREEN NORMAL