FVXX21 KWBC 242154 CCA VOLCANIC ASH ADVISORY...CORRECTION ISSUED: 2004APR24/2145Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2004/007 INFORMATION SOURCE: GOES-9 IMAGERY. MWO GUAM. ERUPTION DETAILS: ASH EMISSION STARTING AROUND 24/0125Z. OBS ASH DATE/TIME: NIL OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: CORRECTION TO CHANGE HEADER NUMBER FROM 20 TO 21. IN THE FIRST IMAGERY OF THE DAY NO ASH COULD BE SEEN COMING OFF THE ISLAND. WE WILL MAINTAIN A CLOSE WATCH AND RESUME ADVISORIES WHEN ASH IS AGAIN REPORTED OR DETECTED. NEXT ADVISORY: NO FURTHER ADVISORIES NNNN