FVXX20 KWBC 1723555 VOLCANIC ASH ADVISORY ISSUED: 2001MAY17/23155Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/61 INFORMATION SOURCE: GUAYAQUIL SIGMET. GEOPHYSICAL INSTITUTE REPORT. GOES 8 VISIBLE AND MULTISPECTRAL IMAGERY. AVIATION MODEL WIND FORECAST. . ERUPTION DETAILS: ERUPTION OCCURRED AROUND 17/2330Z. . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE CALLED TO REPORT AN ERUPTION OF THE VOLCANO. SURFACE OBSERVATION ESTIMATED THE ASH CLOUD TO SEVERAL THOUSAND KILOMETERS ABOVE THE SUMMIT. A PILOT REPORT AT 2337Z REPORTED THE HEIGHT TO AROUND FL300 AND MOVING SOUTHWEST. NO SATELLITE IMAGERY OF THE ERUPTION WAS AVAILABLE AT THIS TIME. . TRAJECTORY: ASH BETWEEN FL160 AND FL300 IS FORECAST TO MOVE SOUTHWEST AROUND 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT ADVISORY WILL BE ISSUED BY 18/0045Z. . 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