FVXX21 KWBC 301912 VOLCANIC ASH ADVISORY-WATCH ISSUED: 2004SEP30/1930Z VAAC: WASHINGTON VOLCANO: ST. HELENS 1201-05 LOCATION: N4620W12218 AREA: US-WASHINGTON SUMMIT ELEVATION: 8363 FT (2549 M) ADVISORY NUMBER: 2004/002 INFORMATION SOURCE: CASCADES VOLCANO OBSERVATORY. GOES-10 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. REMARKS: NO EXPLOSIVE ERUPTION OR ASH HAS CURRENTLY BEEN OBSERVED OR REPORTED. HOWEVER THE VOLCANO OBSERVATORY REPORTS INCREASED SEISMIC ACTIVITY AT THE VOLCANO AND SUGGESTS THAT AN EXPLOSIVE ERUPTION WITH LITTLE OR NO WARNING IS POSSIBLE. WE WILL CONTINUE TO MONITOR THE AREA AND ISSUE THESE VOLCANIC ASH WATCH ADVISORIES EVERY 24 HOURS. HOWEVER IF ASH IS OBSERVED OR REPORTED A VOLCANIC ASH ADVISORY WILL BE ISSUED AS SOON AS POSSIBLE. . EFFECTIVE OCT 28 2004...THE HEADER IDENTIFICATION FOR THIS PRODUCT WILL CHANGE FROM KWBC TO KNES. . NEXT ADVISORY: WILL BE ISSUED BY 2004OCT01/1930Z . NNNN