FVXX20 KWBC 070310       
VOLCANIC ASH ADVISORY
ISSUED: 2003OCT07/0330Z VAAC: WASHINGTON
 
VOLCANO: TUNGURAHUA  1502-08
LOCATION: S0128W07826    AREA: ECUADOR
 
SUMMIT ELEVATION: 16480 FT (5023 M)

ADVISORY NUMBER: 2003/333

INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS
FORECAST. GUAYAQUIL MWO SIGMET. 
        
ERUPTION DETAILS: SERIES OF EMISSIONS STARTING AT 21/2345Z
                                            
OBS ASH DATE/TIME: 07/0245Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA.
WINDS FL100/270 MOVING N 5-10 KNOTS.

FCST ASH CLOUD+6H: SEE SIGMETS.

REMARKS: THE MOST RECENT KNOWN ASH OBSERVATION WAS AT 2255Z
WHEN A PILOT OBSERVED ASH TO FL270. SUBSTANTIAL UNCERTAINTY
EXISTS TODAY CONCERNING THE WIND DIRECTION SINCE MODEL WIND
FORECASTS SUGGEST A WESTERLY OR NORTHWESTERLY DIRECTION BUT
EARLIER SATELLITE ASH OBSERVATIONS SUGGEST ASH IS MOVING
TOWARD THE NORTH. NO ASH OR HOTSPOTS CAN BE SEEN IN CURRENT
SATELLITE IMAGERY BUT LOW AND MID-LEVEL CLOUDS COULD BE
PREVENTING ASH AND HOTSPOT DETECTION.   

NEXT ADVISORY: WILL BE ISSUED BY 2003OCT07/0930Z.  
 
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