VA ADVISORY DTG: 20210731/2337Z VAAC: TOULOUSE VOLCANO: ETNA 211060 PSN: N3744 E01500 AREA: ITALY SUMMIT ELEV: 3330M ADVISORY NR: 2021/9 INFO SOURCE: VONA, SAT IMAGERY, INGV WEBCAM AVIATION COLOUR CODE: RED ERUPTION DETAILS:ERUPTION AT 20210731/1800Z STRONG STROMBOLIAN ACTIVITY OBS VA DTG: 31/2330Z OBS VA CLD: SFC/FL300 N3742 E01448 - N3757 E01457 - N3800 E01606 - N3718 E01603 - N3742 E01448 MOV E 20KT FCST VA CLD +6 HR: 01/0530Z SFC/FL300 N3748 E01448 - N3845 E01809 - N3648 E01748 - N3700 E01518 - N3748 E01448 FCST VA CLD +12 HR: 01/1130Z NO VA EXP FCST VA CLD +18 HR: 01/1730Z NO VA EXP RMK: LAVA FOUNTAINS ARE OBSERVED AT THE SUMMIT CRATERS NXT ADVISORY: NO LATER THAN 20210801/0530Z=