Subject: FVAG01 SABM 212020


FVAG01 SABM 212020                                              2009264 2032
VA ADVISORY
DTG: 20090921/2020Z
VAAC: BUENOS AIRES
VOLCANO: CHAITEN 1508-41
PSN: S4250 W07239
AREA: CHILE-S
SUMMIT ELEVATION: 962M
ADVISORY NUMBER: 2009/148
INFORMATION SOURCE: GOES 12 IMAGERY AND WEBCAM
ERUPTION DETAILS: CONTINUOUS EMISSION
OBS ASH DATE/TIME:  21/1900Z
OBS ASH CLOUD:  TOP FL080 S4250 W07239 - S4229 W07227 - S4237 W07215
 - S4250
W07239 MOV NE 10KT
FCST ASH CLD + 06HR: 22/0100Z SFC/FL200  S4250 W07239 - S4200 W07239
 - S4150
W07239 - S4180 W07220-
S4150 W07210 - S4250 W07200 - S4250 W07239
FL200/350 NO ASH EXP
FL350/550 NO ASH EXP
FCST ASH CLD + 12HR: 22/0700Z SFC/FL200  S4250 W07239 - S4250 W07200
 - S4150
W07200 - S4150 W07150 -
S4250 W07150 - S4300 W07200 - S4300 W07239 - S4250 W07239
FL200/350 NO ASH EXP
FL350/550 NO ASH EXP
FCST ASH CLD + 18HR: 22/1300Z SFC/FL200
FL200/350 NO ASH EXP
FL350/550 NO ASH EXP
REMARKS: 1900Z GOES 12 IMAGERY REVEALS ASH PLUME EXTENDING NE OF DE
 VOLCANO TO
10 KT.
THE CONFIDENCE IN THE VA FCST IS LOW AFTER +18
NEXT ADVISORY: 22/0220Z