FVXX21 KNES 122140 VA ADVISORY DTG: 20150912/2140Z VAAC: WASHINGTON VOLCANO: COTOPAXI 352050 PSN: S0040 W07826 AREA: ECUADOR SUMMIT ELEV: 19393 FT (5911 M) ADVISORY NR: 2015/139 INFO SOURCE: GOES-EAST. GFS WINDS. SEISMIC DETECTION. VOLCANO WEB CAMERA. GEOPHYSICAL INST. ERUPTION DETAILS: ONGOING EMISSION OF GASES WITH VARIOUS AMOUNTS OF ASH OBS VA DTG: 12/2115Z OBS VA CLD: FL/220 S0034 W07907 - S0040 W07826 - S0116 W07836 - S0114 W07917 - S0034 W07907 MOV W-SW 15KT FCST VA CLD +6HR: 13/0330Z FL/220 S0031 W07925 - S0040 W07826 - S0128 W07832 - S0134 W07923 - S0031 W07925 FCST VA CLD +12HR: 13/0930Z FL/220 S0031 W07924 - S0039 W07826 - S0129 W07832 - S0135 W07924 - S0031 W07924 FCST VA CLD +18HR: 13/1530Z RMK: UPDATE FOR A NOT FCST SHIFT IN WINDS TO MORE SW-S. NOW BIG SPREAD IN AREA. EST HGT TO FL220. NO 18HR DUE TO WIND UNCERTAINY. ...SWANSON NXT ADVISORY: WILL BE ISSUED BY 20150913/0345Z