FVXX20 KWBC 140847 VOLCANIC ASH ADVISORY ISSUED: 2004APR14/0846Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2004/002 INFORMATION SOURCE: GFS MODEL WINDS FORECAST. GOES-9 IMAGERY. USGS. ERUPTION DETAILS: ONGOING SEISMIC ACTIVITY WITH A BRIEF INCREASE IN ACTIVITY AT ABOUT 0440Z OBS ASH DATE/TIME: 14/0802Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL040 MOVING TO NW 10 KNOTS. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 14/0802Z. HOWEVER SEISMIC ACTIVITY SUGGESTS THE POSSIBILITY OF NEAR SUMMIT OR LOW LEVEL ASH THAT MIGHT NOT BE DETECTED IN SATELLITE IMAGERY ESPECIALLY UNDER THE CURRENT CLOUDY CONDITIONS. ... NEXT ADVISORY: NO FURTHER ADVISORIES NNNN