[{"noticeHtml":"\u003Ch4\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/h4\u003E\u003Cpre\u003EWMAK01 PAVO 160047   \nVONA\nDTG:                    20260316\/0047Z\nVOLCANO:                KATMAI 312170\nPSN:                    N5817 W15457\nAREA:                   ALASKA\nSOURCE ELEV:            6716FT AMSL\nNOTICE NR:              2026\/02\nCURRENT COLOUR CODE:    GREEN\nPREVIOUS COLOUR CODE:   GREEN\nSVO:                    ALASKA VOLCANO OBSERVATORY\nACT STS:                RE-SUSPENDED VA\nONSET:                  NIL\nDUR:                    NIL\nVA CLD HGT:             6000FT AMSL\nHGT SOURCE:             SIGMET\nMOV:                    SE\nCTC:                    AVO DUTY SCIENTIST TEL +1-907-786-7497\nRMK:                    NO ERUPTION. RESUSPENDED VA FROM GND LEVEL ONLY. SEE SIGMET FOR MORE INFO.\nNXT NOTICE:             A NEW VONA WILL BE ISSUED IF COND CHANGE SIGNIFICANTLY OR IF THE COLOR CODE CHANGES\nNNNN\u003C\/pre\u003E","noticeSynopsis":"Resuspended ash observed from 1912 eruption. Aviation color code and alert level remain at GREEN\/NORMAL.","sentUtc":"2026-03-16","obs":"avo","vName":"Katmai","vnum":"312170","noticeId":"DOI-USGS-AVO-2026-03-16T00:44:32+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2026-03-16T00:44:32+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2026-03-16T00:44:32+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ch4\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/h4\u003E\u003Cpre\u003EWMAK01 PAVO 150136   \nVONA\nDTG:                    20260315\/0136Z\nVOLCANO:                ATKA VOLCANIC COMPLEX 311160\nPSN:                    N5220 W17408\nAREA:                   ALASKA\nSOURCE ELEV:            5030FT AMSL\nNOTICE NR:              2026\/02\nCURRENT COLOUR CODE:    YELLOW\nPREVIOUS COLOUR CODE:   ORANGE\nSVO:                    ALASKA VOLCANO OBSERVATORY\nACT STS:                HEIGHTENED UNREST\nONSET:                  NIL\nDUR:                    NIL\nVA CLD HGT:             NO VA CLD PRODUCED\nHGT SOURCE:             NO VA CLD PRODUCED\nMOV:                    UNKNOWN\nCTC:                    CHRIS WAYTHOMAS, ACTING SIC, USGS CWAYTHOMAS@USGS.GOV (907) 786-7497 DAVID FEE, CS,\n                        UAFGI DFEE1@ALASK...\nRMK:                    CORRECTION: COLOR CODE TO YELLLOW. INCREASE IN SEISMIC ACTIVITY AND SO2 EMISSIONS\n                        DETECTED.\nNXT NOTICE:             A NEW VONA WILL BE ISSUED IF COND CHANGE SIGNIFICANTLY OR IF THE COLOR CODE CHANGES\nNNNN\u003C\/pre\u003E","noticeSynopsis":"Increase in seismic activity and SO2 detected in satellite ","sentUtc":"2026-03-15","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2026-03-15T01:31:03+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2026-03-15T01:31:03+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2026-03-15T01:31:03+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ch4\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/h4\u003E\u003Cpre\u003EWMAK01 PAVO 150116   \nVONA\nDTG:                    20260315\/0116Z\nVOLCANO:                ATKA VOLCANIC COMPLEX 311160\nPSN:                    N5220 W17408\nAREA:                   ALASKA\nSOURCE ELEV:            5030FT AMSL\nNOTICE NR:              2026\/01\nCURRENT COLOUR CODE:    ORANGE\nPREVIOUS COLOUR CODE:   GREEN\nSVO:                    ALASKA VOLCANO OBSERVATORY\nACT STS:                HEIGHTENED UNREST\nONSET:                  NIL\nDUR:                    NIL\nVA CLD HGT:             NO VA CLD PRODUCED\nHGT SOURCE:             NO VA CLD PRODUCED\nMOV:                    UNKNOWN\nCTC:                    CHRIS WAYTHOMAS, ACTING SIC, USGS CWAYTHOMAS@USGS.GOV (907) 786-7497 DAVID FEE, CS,\n                        UAFGI DFEE1@ALASK...\nRMK:                    INCREASE IN SEISMIC ACTIVITY AND SO2 EMISSIONS DETECTED.\nNXT NOTICE:             A NEW VONA WILL BE ISSUED IF COND CHANGE SIGNIFICANTLY OR IF THE COLOR CODE CHANGES\nNNNN\u003C\/pre\u003E","noticeSynopsis":"Increase in seismic activity and SO2 detected in satellite ","sentUtc":"2026-03-15","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2026-03-15T00:30:32+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2026-03-15T00:30:32+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2026-03-15T00:30:32+00:00","nvewsThreat":"High Threat"}]