FVXX22 KNES 312153 VA ADVISORY DTG: 20071231/2152Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2007/028 INFO SOURCE: GOES-12. GFS WINDS. ERUPTION DETAILS: 13 MIN EMISSION AT 31/1505Z OBS VA DTG: 31/2115Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA. FCST VA CLD +6HR: NOT AVBL FCST VA CLD +12HR: NOT AVBL FCST VA CLD +18HR: NOT AVBL RMK: ASH FROM THE 31/1505Z EMISSION HAS BECOME TOO THIN TO DETECT IN SATELLITE IMAGERY. ...BROWN NXT ADVISORY: NO FURTHER ADVISORIES NNNN