FVXX20 KNES 171322 VA ADVISORY DTG: 20080217/1321Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 PSN: N1621 E14540 AREA: MARIANA.ISLANDS SUMMIT ELEV: 2585 FT (788 M) ADVISORY NR: 2008/032 INFO SOURCE: MTSAT. GFS WINDS. USGS. MODIS ERUPTION DETAILS: ONGOING LOW LEVEL ASH EMISSION OBS VA DTG: 17/1130Z OBS VA CLD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL040 MOVING FROM E 15-20 KNOTS. FCST VA CLD +6HR: 17/1730Z FCST VA CLD +12HR: 17/2330Z FCST VA CLD +18HR: 18/0530Z RMK: NO ASH OR HOTSPOTS SEEN IN NIGHTTIME SAT IMAGERY. USGS REPORTED INCREASED SEISMICITY STARTING ABOUT 17/0000Z CAUSING PRIMARILY STEAM. 17/0040Z VISIBLE MODIS IMAGERY SUGGESTED POSSIBLE ASH. NXT ADVISORY: WILL BE ISSUED BY 20080217/1915Z NNNN