FVXX20 KWBC 281309
VOLCANIC ASH ADVISORY
ISSUED: 2003DEC28/1310Z VAAC: WASHINGTON

VOLCANO: TUNGURAHUA  1502-08
LOCATION: S0128W07826    AREA: ECUADOR

SUMMIT ELEVATION: 16480 FT (5023 M)

ADVISORY NUMBER: 2003/660

INFORMATION SOURCE: GOES-12 IMAGERY. MODEL WINDS FORECAST.  
 
ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS
                         
OBS ASH DATE/TIME: 28/1215Z

OBS ASH CLOUD: SFC/FL250 22 NM WIDE LINE BETWEEN S0124W07830
- S0124W07748.  ASH IS MOVING E 5 KNOTS.

FCST ASH CLOUD+6H: NOT AVBL
FCST ASH CLOUD+12H: NOT AVBL  
FCST ASH CLOUD+18H: NOT AVBL

REMARKS: SATELLITE IMAGERY AT 1215Z SHOWED A WIDE PLUME OF
ASH AND GASES EXTENDING AROUND 40 NM TO THE EAST OF THE
SUMMIT WHERE IT THEN WENT UNDER HIGHER LEVEL CLOUDS.
FORECAST WINDS ARE LIGHT AND VARIABLE AND IS LIKELY WHY THE
PLUME IS WIDER THAN NORMAL. SATELLITE IMAGERY SHOWS ONLY A
SLOW DRIFT TO THE EAST AND WE ESTIMATE THE HEIGHT BELOW
FL250. 

NEXT ADVISORY: WILL BE ISSUED BY 2003DEC28/1900Z.

NNNN"Attached Graphic Map Depicting Ash Only" 

"Graphic Map Depicting Ash"