FVXX21 KWBC 181710 VOLCANIC ASH ADVISORY - WATCH ISSUED 1710 UTC 18 SEP 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1086 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . ASH WAS LAST REPORTED OVER THE VOLCANO ON 17/1719 UTC WHEN A SMALL EMISSION OCCURRED. ALTHOUGH ACTIVITY IS LOW OCCASIONAL SMALL EMISSIONS OF ASH AND STEAM MAY OCCUR AT ANY TIME. . WE WILL CONTINUE TO MONITOR THE AREA AND IF ASH IS OBSERVED OR REPORTED A VOLCANIC ASH ADVISORY WILL BE ISSUED AS SOON AS POSSIBLE. REAL TIME SATELLITE IMAGERY OF ECUADOR CAN BE ACCESSED VIA INTERNET AT (ALL LOWER CASE EXCEPT /VAAC/): HTTP://WWW.SSD.NOAA.GOV/VAAC/GUAG-IMG.HTML . THE WATCH VAA IS ISSUED ONLY FOR SEISMICALLY MONITORED VOLCANOES AND BASED ON INFORMATION RECEIVED FROM THE GEOLOGICAL COMMUNITY. A WATCH VAA WILL BE ISSUED DAILY WHEN INFORMATION IS RECEIVED TO INDICATE THAT A VOLCANO IS RESTLESS AND HAS THE POTENTIAL FOR AN EXPLOSIVE ERUPTION WITH LITTLE OR NO WARNING. NON-EXPLOSIVE LOW LEVEL AND NEAR SUMMIT ACTIVITY MAY BE OCCURRING AT PRESENT. . SEE NOAA-ARL HOMEPAGE FOR HYPOTHETICAL ERUPTIONS-VAFTAD AT: http://WWW.ARL.NOAA.GOV/VAFTAD.HTML (ALL LOWER CASE) . THIS WILL BE THE FINAL ADVICE ISSUED UNTIL A SIGNIFICANT ERUPTION OCCURS. . TURK . NNNN