Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 17000 ft (5200 m), or flight level 170.Original VAAC bulletin:FVXX23 at 18:58 UTC, 21/08/26 from KNESVA ADVISORYDTG: 20260821/1855ZVAAC: WASHINGTONVOLCANO: PURACE 351060PSN: N0219 W07624AREA: COLOMBIASOURCE ELEV: 15256 FT AMSLADVISORY NR: 2026/427INFO SOURCE: GOES-19. VONA. NWP MODELS. ERUPTION DETAILS: NEW VA EMSOBS VA DTG: 21/1830ZOBS VA CLD: SFC/FL170 N0228 W07636 - N0220 W07623- N0219 W07623 - N0222 W07637 - N0228 W07636 MOVW 10KT FCST VA CLD +6HR: 22/0030Z SFC/FL170 N0231 W07641- N0220 W07623 - N0219 W07625 - N0223 W07642 -N0231 W07641 FCST VA CLD +12HR: 22/0630Z SFC/FL170 N0231W07641 - N0220 W07623 - N0220 W07625 - N0222W07642 - N0231 W07641 FCST VA CLD +18HR: 22/1230Z SFC/FL170 N0231W07641 - N0220 W07624 - N0219 W07623 - N0222W07643 - N0231 W07641 RMK: VA DETECTED ON STLT MOVG WNW OF SUMMIT. VONAINDICATES VA EMS. NO CHG FCST TO MDL WINDS AT FLNXT 18 HR. ...KONONNXT ADVISORY: WILL BE ISSUED BY 20260822/0100Z