FVAG01 SABM 232030 VA ADVISORY DTG: 20091123/2030Z VAAC: BUENOS AIRES VOLCANO: CHAITEN 1508-41 PSN: S4250 W07239 AREA: CHILE-S SUMMIT ELEVATION: 962M ADVISORY NUMBER: 2009/178 INFORMATION SOURCE: ERUPTION DETAILS: OBS ASH DATE/TIME: 23/1400Z OBS ASH CLOUD: VA NOT IDENTIFIABLE FROM SATELLITE DATA REMARKS: VA NOT DETECTED IN SATELLITE IMAGERY DUE TO CLOUD COVER NEXT ADVISORY: FURTHER INFORMATION WILL BE ISSUED IF ANY ASH CLOUD IS DETECTED/OBSERVED