Subject: FVXX01 EGRR 120815 FVXX01 EGRR 120815 VA ADVISORY DTG: 20080212/0815Z VAAC: LONDON VOLCANO: KATLA PSN: N6338 W01903 AREA: ICELAND SUMMIT ELEV: 1512M ADVISORY NR: 2008/01 INFO SOURCE: IMO AVIATION COLOUR CODE: UNKNOWN ERUPTION DETAILS: SUB-GLACIAL VOLCANIC ACTIVITY DETECTED IN KATLA. ERUPTION ESTIMATED TO BREAK THROUGH GLACIER BY 120930Z. OBS VA DTG: 12/0815Z OBS VA CLD: NO VA EXP FCST VA CLD +6 HR: 12/1415Z NO VA EXP FCST VA CLD +12 HR: 12/2015Z NO VA EXP FCST VA CLD +18 HR: 13/0215Z NO VA EXP RMK: EXERCISE VOLCEUR08 FOR EXERCISE PURPOSES ONLY NXT ADVISORY: 20080212/0930Z=  224 FVXX01 EGRR 120815 VA ADVISORY DTG: 20080212/0815Z VAAC: LONDON VOLCANO: KATLA PSN: N6338 W01903 AREA: ICELAND SUMMIT ELEV: 1512M ADVISORY NR: 2008/01 INFO SOURCE: IMO AVIATION COLOUR CODE: UNKNOWN ERUPTION DETAILS: SUB-GLACIAL VOLCANIC ACTIVITY DETECTED IN KATLA. ERUPTION ESTIMATED TO BREAK THROUGH GLACIER BY 120930Z. OBS VA DTG: 12/0815Z OBS VA CLD: NO VA EXP FCST VA CLD +6 HR: 12/1415Z NO VA EXP FCST VA CLD +12 HR: 12/2015Z NO VA EXP FCST VA CLD +18 HR: 13/0215Z NO VA EXP RMK: EXERCISE VOLCEUR08 FOR EXERCISE PURPOSES ONLY NXT ADVISORY: 20080212/0930Z=  .