FVXX23 KNES 181347 CCA VOLCANIC ASH ADVISORY -CORRECTION ISSUED: 20070418/1347Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 1402-03 LOCATION: N1445 W09133 AREA: GUATEMALA SUMMIT ELEVATION: 12375 FT (3772 M) ADVISORY NUMBER: 2007/048 INFORMATION SOURCE: GOES-12. GFS WINDS. ERUPTION DETAILS: SMALL PUFFS OF ASH LAST ONE AT 18/1240Z OBS ASH DATE/TIME: 18/1315Z OBS ASH CLOUD: SFC/FL120 N1446 W09133 - N1445 W09132 - N1435 W09138 - N1434 W09131 - N1420 W09150 - N1437 W09142 - N1446 W09133 MOVING SW 10-20 KNOTS. FCST ASH CLOUD +6H: 18/1930Z NO ASH EXP. FCST ASH CLOUD +12H: 19/0130Z NOT AVBL. FCST ASH CLOUD +18H: 19/0730Z NOT AVBL. REMARKS: A PUFF OF ASH IS MOVING RAPIDLY TOWARD THE SW AND IS CATCHING UP TO A LARGER AREA OF THIN ASH FROM APPARENT WEAK OVERNIGHT PUFFS FROM THE SANTIAGUITO CONE OF THE VOLCANO. ASH IS QUICKLY DISSIPATING TOWARD THE SW...THOUGH ADDITIONAL PUFFS MAY OCCUR NEAR THE SUMMIT THROUGHOUT THE MORNING... ...GALLINA NEXT ADVISORY: WILL BE ISSUED BY 20070418/1945Z