Subject: FVAG01 SABM 291640 FVAG01 SABM 291640 2009119 1642 VOLCANIC ASH ADVISORY ISSUED: 2009 04 29 / 1640Z VAAC: BUENOS AIRES VOLCANO: CHAITEN 1508-41 LOCATION: S4250 W07239 AREA: CHILE-S SUMMIT ELEVATION: 962M ADVISORY NUMBER: 2009/073 INFORMATION SOURCE:GOES 12 AND WEB CAM DGAC AVIATION COLOR CODE: ERUPTION DETAILS: CONTINUOUS EMISSION OBS ASH DATE/TIME: 29/1445Z OBS ASH CLOUD: ASH CLD TOP FL070 MOV NW FCST ASH CLD + 06HR: 292100Z S4250 W07239 - S4200 W07300 - S4230 W07300 - S4250 W07239 FL200/350 NO ASH EXP FL350/550 NO ASH EXP FCST ASH CLD +12HR: 300300Z S4250 W07239 - S4210 W07300 - S4310 W07300 - S4250 W07239 FL200/350 NO ASH EXP FL350/550 NO ASH EXP FCST ASH CLD +18HR: 300900Z S4250 W07239 - S4400 W07100 - S4310 W07300 - S4250 W07239 FL200/350 NO ASH EXP FL350/550 NO ASH EXP REMARKS: 14:45UTC GOES 12 VIS IMAGE AND WEB CAM. ASH CLD TOP 070 MOV NW NEXT ADVISORY: FURTHER INFORMATION WILL BE ISSUED IF ANY ASH CLD IS DETECTED/OBSERVED