FVXX20 KWBC 130830 VOLCANIC ASH ADVISORY ISSUED: 2001AUG13/0830Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/165 . INFORMATION SOURCE: GUAYAQUIL METEOROLOGICAL WATCH OFFICE. INFRARED AND MULTISPECTRAL SATELLITE IMAGERY. 12 HOUR WIND FORECAST FROM THE 13/0000Z AVIATION MODEL. . ERUPTION DETAILS: CONTINUOUS ERUPTION SINCE 06/1203Z. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 13/0745Z SHOWS THAT MULTI-LEVELED CLOUDS HAVE MOVED OVER THE AREA AROUND THE SUMMIT. THESE CLOUDS ARE MAKING IT DIFFICULT TO DETECT ANY NEW ASH OR ASH FROM EARLIER THIS EVENING. . TRAJECTORY: ASH FROM THE SUMMIT TO FL250 WILL MOVE TOWARDS THE WEST AT 10 TO 20 KNOTS. ASH AT OR ABOVE FL320 WILL MOVE TOWARDS THE NORTH AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT ADVISORY WILL BE ISSUED BY 13/1430Z. . 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. . WALTER . NNNN