FVXX23 KNES 041223 VA ADVISORY DTG: 20210804/1223Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2021/484 INFO SOURCE: GOES-16. WEBCAM. ERUPTION DETAILS: VA EMS OBS IN SUMMIT WEBCAM OBS VA DTG: 04/1220Z OBS VA CLD: FCST VA CLD +6HR: NOT AVBL FCST VA CLD +12HR: NOT AVBL FCST VA CLD +18HR: NOT AVBL RMK: WE HAVE RECEIVED INFORMATION SUGGESTING A POSSIBLE VA EMISSION. WE WILL GATHER FURTHER INFORMATION AND ISSUE A FULL ADVISORY AS SOON AS POSSIBLE. NXT ADVISORY: AS SOON AS POSSIBLE