FVXX20 KWBC 280630 VOLCANIC ASH ADVISORY ISSUED: 2001JUL28/0630Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/125 . INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL SATELLITE IMAGERY. GUAYAQUIL SIGMET. GEOPHYSICAL INSTITUTE. SIX HOUR WIND FORECAST FROM THE 28/0000Z AVIATION MODEL. . ERUPTION DETAILS: PROBABLE ASH OVER SUMMIT AT 28/0543Z. . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE REPORTED THAT ASH WAS LIKELY OVER THE SUMMIT AT 0543Z TO A HEIGHT OF AT FL230. SATELLITE IMAGERY THROUGH 0545Z SHOWS SCATTERED CLOUDS WHICH MAY BE PRECLUDING THE DETECTION OF ASH. . TRAJECTORY: ANY ASH TO FL230 WOULD MOVE TOWARDS THE WEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BEFORE 28/1230Z . REAL TIME SATELLITE IMAGERY AND VOLCANIC ASH ADVISORIES OFTEN ACCOMPANIED BY A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS HTTP://WWW.SSD.NOAA.GOV/VAAC/WASHINGTON.HTML (ALL LOWER CASE EXCEPT /VAAC/) . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN