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Volcanic Ash HYSPLIT trajectory and dispersion runs are generated in response to alerts produced by the volcanic cloud monitoring system (VOLCAT)

Choose a volcano:


VOLCAT Alerts and corresponding HYSPLIT trajectory and dispersion runs for the last 48 hours

Trajectory and dispersion runs are generated when an alert is received

Date and Time (UTC): Alert Type Location
(lat, lon)
Nearby Volcanoes VAAC Region HYSPLIT Trajectories HYSPLIT Dispersion
Alert 0 10/22/2021 at 03:06 UTC ash -15.78, -71.85 Sabancaya | Huambo | Nicholson, Cerro | Chachani, Nevado | Andahua-Orcopampa Buenos Aires
Alert 1 10/22/2021 at 02:33 UTC ash 30.44, 130.22 Kuchinoerabujima | Kikai | Kuchinoshima | Nakanoshima | Kogaja-jima Tokyo
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  • Alert 2 10/22/2021 at 02:26 UTC hot -19.53, 169.44 Yasur Wellington
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  • Alert 3 10/22/2021 at 02:26 UTC ash 52.08, -176.13 Great Sitkin | Adagdak | Kasatochi | Moffett | Koniuji Anchorage
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  • Alert 4 10/22/2021 at 02:20 UTC ash 54.76, -163.97 Shishaldin | Isanotski | Roundtop | Fisher | Westdahl Anchorage
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  • Alert 5 10/22/2021 at 02:20 UTC ice 52.44, -129.0 Milbanke Sound Group Montreal
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  • Alert 6 10/22/2021 at 02:00 UTC ash 37.73, 15.0 Etna | Vulcano | Lipari | Panarea | Stromboli Toulouse
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  • Alert 7 10/22/2021 at 01:33 UTC ash 12.7, -87.0 San Cristobal | Telica | Rota | Negro, Cerro | Pilas, Las Washington
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  • Alert 8 10/22/2021 at 01:29 UTC ash 27.25, 140.87 Nishinoshima | Doyo Seamount | Kaikata Seamount | Mokuyo Seamount | Suiyo Seamount Tokyo
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  • Alert 9 10/22/2021 at 00:36 UTC ash -15.78, -71.85 Sabancaya | Huambo | Nicholson, Cerro | Chachani, Nevado | Andahua-Orcopampa Buenos Aires
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  • Alert 10 10/22/2021 at 00:23 UTC ash 10.02, -83.77 Turrialba | Irazu | Barva | Poas | Platanar Washington
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  • Alert 11 10/22/2021 at 00:18 UTC hot 38.13, 34.13 Hasan Dagi Toulouse
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  • Alert 12 10/22/2021 at 00:15 UTC hot -2.0, -78.34 Sangay | Licto Washington
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  • Alert 13 10/21/2021 at 23:44 UTC hot 19.41, -155.29 Kilauea Washington
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  • Alert 14 10/21/2021 at 23:44 UTC hot 19.41, -155.29 Kilauea Washington
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  • Alert 15 10/21/2021 at 23:40 UTC ash 55.42, -161.89 Pavlof | Pavlof Sister | Emmons Lake | Dutton | Dana Anchorage
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  • Alert 16 10/21/2021 at 23:40 UTC hot -1.41, 29.21 Nyamuragira Toulouse
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  • Alert 17 10/21/2021 at 23:36 UTC hot -19.53, 169.44 Yasur Wellington
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  • Alert 18 10/21/2021 at 23:28 UTC ice 29.56, 129.7 Suwanosejima Tokyo
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  • Alert 19 10/21/2021 at 23:12 UTC ash 19.51, -103.62 Colima | Primavera, Sierra la | Mascota Volcanic Field | Michoacan-Guanajuato | Ceboruco Washington
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