FVXX20 KWBC 092040 VOLCANIC ASH ADVISORY STATEMENT-CORRECTION TIME OF NEXT VAAS ISSUED 2040 UTC 09 APR 2000 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 00-120 ECUADOR 0011S 7836W . BACKGROUND: GUAGUA PICHINCHA ECUADOR (1502-02) SUMMIT HEIGHT 15695 FT (4784 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. . ERUPTION DETAILS: EXPLOSIVE ERUPTIONS AT 09/0504 UTC AND 09/0712 UTC...POSSIBLE EXPLOSION AT 1230 UTC. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 09/1945 UTC SHOWS NO SIGNS OF ASH. THERE IS AN ABUNDANCE OF CLOUDINESS IN THE REGION WHICH IS MAKING IT DIFFICULT TO DETERMINE IF THERE HAVE BEEN ADDITIONAL EMISSIONS OF ASH. WHILE THERE HAVE BEEN NO RECENT REPORTS OF EXPLOSIONS THE VOLCANO DOES REMAIN SEISMICALLY ACTIVE. THEREFORE AN ERUPTION COULD STILL OCCUR AT ANY TIME IN THE SAME MANNER IT DID EARLIER IN THE DAY. THE LAST POSSIBLE EXHALATION OF ASH AT 1230 UTC WAS BELIEVED TO HAVE REACHED BETWEEN FL300 AND FL350. . TRAJECTORY: ANY ASH REACHING FROM THE SUMMIT TO FL250 SHOULD MOVE SOUTHWEST AT 10 TO 20 KNOTS. ANY ASH FROM FL250 TO FL350 IS EXPECTED TO MOVE SOUTH AT 10 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 10/0230 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS 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. . ORRISON . NNNN