[{"noticeHtml":"\u003Ch4\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/h4\u003E\u003Cpre\u003EWMAK01 PAVO 011642   \nVONA\nDTG:                    20261001\/1642Z\nVOLCANO:                GARELOI 311070\nPSN:                    N5147 W17848\nAREA:                   ALASKA\nSOURCE ELEV:            5161FT AMSL\nNOTICE NR:              2026\/01\nCURRENT COLOUR CODE:    YELLOW\nPREVIOUS COLOUR CODE:   GREEN\nSVO:                    ALASKA VOLCANO OBSERVATORY\nACT STS:                ERUPTION OCCURRED\nONSET:                  20261001\/1527Z\nDUR:                    1 MIN\nVA CLD HGT:             UNKNOWN\nHGT SOURCE:             SATELLITE\nMOV:                    UNKNOWN\nCTC:                    AVO DUTY SCIENTIST 907-786-7497\nRMK:                    A SINGLE BRIEF EXPLOSION DETECTED IN GEOPHYSICAL DATA. UNKNOWN IF VA CLOUD WAS\n                        PRODUCTED, BUT IF SO, EMMISSIONS WOULD BE MINOR DUE TO THE SHORT DURATION OF THE\n                        EXPLOSION. NOTHING SEEN IN SATELLITE DATA WITH MET CLOUD TOPS AT 20,000 AMSL\nNXT NOTICE:             A NEW VONA WILL BE ISSUED IF COND CHANGE SIGNIFICANTLY OR IF THE COLOR CODE CHANGES\nNNNN\u003C\/pre\u003E","noticeSynopsis":"A single brief explosion was detected in geophysical data at 07:27 AM AKDT (15:27 UTC). Aviation Color Code\/ Volcano Alert Level was changed to YELLOW\/ADVISORY. It is unknown if an ash cloud was produced due to cloud cover at the volcano.","sentUtc":"2026-10-01","obs":"avo","vName":"Gareloi","vnum":"311070","noticeId":"DOI-USGS-AVO-2026-10-01T15:57:08+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2026-10-01T15:57:08+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2026-10-01T15:57:08+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ch4\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/h4\u003E\u003Cpre\u003EWMAK01 PAVO 082231   \nVONA\nDTG:                    20260908\/2231Z\nVOLCANO:                KUPREANOF 312060\nPSN:                    N5601 W15947\nAREA:                   ALASKA\nSOURCE ELEV:            6217FT AMSL\nNOTICE NR:              2026\/03\nCURRENT COLOUR CODE:    UNASSIGNED\nPREVIOUS COLOUR CODE:   YELLOW\nSVO:                    ALASKA VOLCANO OBSERVATORY\nACT STS:                DECREASED UNREST\nONSET:                  NIL\nDUR:                    NIL\nVA CLD HGT:             NO VA CLD PRODUCED\nHGT SOURCE:             NO VA CLD PRODUCED\nMOV:                    NO VA CLD PRODUCED\nCTC:                    AVO DUTY SCIENTIST 907-786-7497\nRMK:                    [CORRECTED] VOLCANIC ACTIVITY HAS DECLINED. AVIATION COLOR CODE IS UNASSIGNED RATHER\n                        THAN GREEN DUE TO INSUFFICIENT GROUND-BASED MONITORING DATA.\nNXT NOTICE:             A NEW VONA WILL BE ISSUED IF COND CHANGE SIGNIFICANTLY OR IF THE COLOR CODE CHANGES\nNNNN\u003C\/pre\u003E","noticeSynopsis":"Volcanic activity at Mount Kupreanof has declined to background levels.","sentUtc":"2026-09-08","obs":"avo","vName":"Kupreanof","vnum":"312060","noticeId":"DOI-USGS-AVO-2026-09-08T22:30:01+00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2026-09-08T22:30:01+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2026-09-08T22:30:01+00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Ch4\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/h4\u003E\u003Cpre\u003EWMAK01 PAVO 082220   \nVONA\nDTG:                    20260908\/2220Z\nVOLCANO:                KUPREANOF 312060\nPSN:                    N5601 W15947\nAREA:                   ALASKA\nSOURCE ELEV:            6217FT AMSL\nNOTICE NR:              2026\/02\nCURRENT COLOUR CODE:    YELLOW\nPREVIOUS COLOUR CODE:   YELLOW\nSVO:                    ALASKA VOLCANO OBSERVATORY\nACT STS:                DECREASED UNREST\nONSET:                  NIL\nDUR:                    NIL\nVA CLD HGT:             NO VA CLD PRODUCED\nHGT SOURCE:             NO VA CLD PRODUCED\nMOV:                    NO VA CLD PRODUCED\nCTC:                    AVO DUTY SCIENTIST 907-786-7497\nRMK:                    VOLCANIC ACTIVITY HAS DECLINED. AVIATION COLOR CODE IS UNASSIGNED RATHER THAN GREEN\n                        DUE TO INSUFFICIENT GROUND-BASED MONITORING DATA.\nNXT NOTICE:             A NEW VONA WILL BE ISSUED IF COND CHANGE SIGNIFICANTLY OR IF THE COLOR CODE CHANGES\nNNNN\u003C\/pre\u003E","noticeSynopsis":"Volcanic activity at Mount Kupreanof has declined to background levels.","sentUtc":"2026-09-08","obs":"avo","vName":"Kupreanof","vnum":"312060","noticeId":"DOI-USGS-AVO-2026-09-04T19:18:06+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2026-09-04T19:18:06+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2026-09-04T19:18:06+00:00","nvewsThreat":"Moderate Threat"}]