Sporadic puff emissions were reported at Nevados de Chillán. Ash was not identifiable in satellite data, but light emissions were seen on webcam as of October 17, 2026, 01:20 UTC.Original VAAC bulletin:FVAG01 at 01:10 UTC, 17/10/26 from SABMVA ADVISORYDTG: 20261017/0120ZVAAC: BUENOS AIRESVOLCANO: NEVADOS DE CHILLAN 357070PSN: S3651 W07122AREA: CHILESUMMIT ELEV: 10538 FT [3212 M]ADVISORY NR: 2026/021INFO SOURCE: GOES-E. GFS. WEBCAM.AVIATION COLOUR CODE: NOT GIVENERUPTION DETAILS: SPORADIC PUFF EMISSIONEST VA DTG: 17/0030ZEST VA CLD: SFC/FL120 S3651 W07123 - S3710 W07107- S3722 W07119 - S3711 W07134 - S3651 W07123 MOVS 10KTFCST VA CLD +6 HR: 17/0630Z SFC/FL120 S3651 W07122- S3716 W07058 - S3733 W07110 - S3720 W07131 -S3651 W07122FCST VA CLD +12 HR: 17/1230Z SFC/FL120 S3652W07121 - S3719 W07052 - S3741 W07107 - S3723W07126 - S3652 W07121FCST VA CLD +18 HR: 17/1830Z NOT PROVIDEDRMK: VA NOT IDENTIFIABLE FM STLT DATA. SPORADICLIGHT EMS ON WEBCAM. T+0 EST FM PREVIOUS FCST....SMNNXT ADVISORY: WILL BE ISSUED BY 20261017/0720Z=