FVXX22 KNES 171628 VA ADVISORY DTG: 20160517/1628Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 342030 PSN: N1445 W09133 AREA: GUATEMALA SUMMIT ELEV: 12375 FT (3772 M) ADVISORY NR: 2016/139 INFO SOURCE: GOES-EAST. NAM WINDS. INSIVUMEH. ERUPTION DETAILS: SIGNIFICANT EMS OF VA OBS VA DTG: 17/1545Z OBS VA CLD: SFC/FL150 N1448 W09133 - N1445 W09132 - N1443 W09135 - N1443 W09138 - N1445 W09142 - N1448 W09136 - N1448 W09133 MOV W 10KT FCST VA CLD +6HR: 17/2200Z FCST VA CLD +12HR: 18/0400Z FCST VA CLD +18HR: 18/1000Z RMK: INSIVUMEH REPORTS VA TO 4500M ABOVE SUMMIT MOVING W, SW AND S FROM THE VOLCANO. THE ERUPTION IS THE MOST EXPLOSIVE IN LAST 2 YEARS. FORECAST WILL BE ISSUED SHORTLY WHEN AVAILABLE. ...SCHWARTZ NXT ADVISORY: WILL BE ISSUED BY 20160517/2230Z